The factorisation of 20xy - 54 can be expressed as 2( 10xy - 27 ).
What is factorisation?The concept here is the factorisation . The breaking or decomposition of an entity (such as a number, a matrix, or a polynomial) into a product of another entity, or factors, whose multiplication results in the original number, matrix, etc., is known as factorization or factoring in mathematics.
A number or other mathematical object is factorized or factored when it is written as the product of numerous factors, typically smaller or simpler things of the same kind.
We were given, 20xy - 54, we can see that that factor of 2 is common for both 20xy and 54.
Then we can factorize as 2( 10xy - 27 ).
2( 10xy - 27 )
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find m
please and thank you
The measure of angle K and L in the first figure is ∠L = 23 degrees and ∠K = 157. Second figure, the measure of ∠K = ∠L = 70 degrees.
What is sum of interior angles?A polygon's interior angle is the angle created between its two adjacent sides. Alternately, we may state that the internal angle of a polygon refers to the angle measured at the interior portion of a polygon.
For figure 2 the two lines are parallel to each other, and the line that meets the parallel line at points at M and L are from two equal lines.
Hence, the angle suspended by both are equal, that is:
∠L = ∠M
∠L = 23 degrees.
Now, the ∠K and ∠J are created by two parallel lines; hence they are equal:
∠K = ∠J = x
The sum of interior angles of a quadrilateral is 360, so:
∠L + ∠M + ∠J + ∠K = 360
23 + 23 + x + x = 360
46 + 2x = 360
2x = 360 - 46
x = 157
Hence, the measure of angle K and L is 157 and 23 respectively.
For the second figure, the angle K and L are created by equal length of segments.
∠K = ∠L = x
The sum of interior angles of a quadrilateral is 360, so:
∠L + ∠M + ∠J + ∠K = 360
x + 90 + 130 + x = 360
2x + 220 = 360
2x= 360 - 220
x = 70
Hence, the angle of K and L is 70 degrees.
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a rancher who wishes to fence off a rectangular area finds that the fencing in the east-west direction will require extra reinforcement due to strong prevailing winds. fencing in the east-west direction will therefore cost per (linear) yard, as opposed to a cost of per yard for fencing in the north-south direction. given that the rancher wants to spend on fencing, express the area of the rectangle as a function of its width .
The dimension of the largest possible rectangular area that can be fenced for $4800 is 300 yard × 150 yard. The area, A of the rectangle as a function of its width, w is A = 300w - 1.5w².
Let the width of the rectangular area be "w" and its length be "l".
The cost of the east-west direction fencing is
2w * 12 = 24w
and the cost of the north-south direction fencing is
2l * 8 = 16l
Since the rancher wants to spend exactly $4800 on fencing, we can write an equation to represent the cost:
24w + 16l = 4800
Divide by 8
3w + 2l = 600
Therefore, l = 300 - 1.5w
The area of the rectangle is given by "lw", so
A = lw
Substituting the value of "l" from the first equation into this second equation:
A = (300 - 1.5w)w
A = 300w - 1.5w²
Thus, the area of the rectangle is a function of its width and can be expressed as Area = 300w - 1.5w².
To find value of w with maximum area, dA/ dw = 0
300 - 3w = 0
w = 100
Therefore, l = 300 - 1.5*100
l = 150
--The question is incomplete, answering to the question below--
"A rancher who wishes to fence off a rectangular area finds that the fencing in the east-west direction will require extra reinforcement due to strong prevailing winds. Because of this, the cost of fencing in the east-west direction will be $12 per (linear) yard, as opposed to a cost of $8 per yard for fencing in the north-south direction. Find the dimensions of the largest possible rectangular area that can be fenced for $4800, express the area of the rectangle as a function of its width."
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helpp pls! find the value of each variable in the parallelogram.
The value of each variable in the parallelogram is h = 9 and g = 59.
What is a parallelogram?A parallelogram is a geometric object with sides that are parallel to one another in two dimensions. It is a form of polygon with four sides (sometimes known as a quadrilateral) in which each parallel pair of sides have the same length. A parallelogram has neighboring angles that add up to 180 degrees. Angles on either side are equal.
We know that the opposite sides of a parallelogram and the opposite angles of a parallelogram are equal.
Using the above statement, we can write:
16 - h = 7
16 - 7 = h
h = 9
g + 4 = 63
g = 63 - 4
g = 59
Hence, the value of each variable in the parallelogram is h = 9 and g = 59.
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please help!! I need this done really quick!!
Answer:
6 divided by 2/3 = 9
Step-by-step explanation:
because it is mathematically correct (can check via calculator)
and the question includes the fact that S cut the rope into 9 sections from 6.
Are the ratios 1:5 and 18:20 equivalent?
Answer:
No, these ratios are not equivalent.
Step-by-step explanation:
use the definition of the riemann integral in terms of riemann sums to prove property (3) of definite integrals. that is, if f(x) is continuous on [a, b] and k is any constant, then: Integral from b ( k f(x) dx) = k integral fromb ( f(x) dx)
The integral of k*f(x) equals the integral of f(x) multiplied by k because the total of k*f(x) equals the sum of f(x) multiplied by k.
K*F(x) Integral = K*Fintegral (x). This is inferred from the description of a definite integral as the upper limit of a term sum. The area under the curve can be divided into a number of rectangles and their areas added if we are taking the integral of a function from a to b. The integral then equals the maximum value of this total. The result is identical to the original sum increased by k if we multiply each term of the sum by a constant called k. as a result, the maximum allowed f(x) multiplied by k because the total of k*f(x) equals the sum of f(x) multiplied by k.
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two socks are drawn from a drawer which contains one red sock, three blue socks, two black socks, and two green socks. once a sock it is not replaced. determine the probability.
1. p(a black sock and then a green sock)
2. p(two blue socks)
3. p(a green sock and then a red sock)
4.p(two green socks)
Answer:
p(a black sock and then a green sock)
The probability of drawing a black sock first is 2/8=1/4, and then the probability of drawing a green sock next is 2/7=2/14 since we have one less sock left. So the overall probability is (1/4) * (2/14) = 1/7
p(two blue socks)
The probability of drawing a blue sock first is 3/8, and then the probability of drawing another blue sock next is 2/7 since we have one less sock left. So the overall probability is (3/8) * (2/7) = 6/56 = 3/28
p(a green sock and then a red sock)
The probability of drawing a green sock first is 2/8, and then the probability of drawing a red sock next is 1/7 since we have one less sock left. So the overall probability is (2/8) * (1/7) = 2/56 = 1/28
4.p(two green socks)
The probability of drawing a green sock first is 2/8, and then the probability of drawing another green sock next is 1/7 since we have one less sock left. So the overall probability is (2/8) * (1/7) = 2/56 = 1/28
Note that these are the theoretical probabilities, and in reality, drawing a sock and not replacing it will change the number of socks left, so the probability of the next draw will change accordingly.
Step-by-step explanation:
Rewrite the following multiplication problem using the associative property and then show that both results will be the same.
3/7 x 5/6 x1/4
The answer is the same i. e., 4.375 in all the cases as shown
What is multiplication problem ?There are two terms which describe the three numbers in a multiplication problem. The factors are the numbers that are being multiplied together. The product is the result or answer of multiplying the multiplicand by the multiplier.
= 3/7 x 5/6 x1/4
= 38/8
= 3/7 x 1/4 x 5/6
= 5/6 x 1/4 x3/7
= 5/6 x 3/7 x 1/4
= 1/4 x 5/6 x 3/7
=1/4 x 3/7 x 56
= 4.375
The answer is the same i. e., 4.375 in all the cases as shown.
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HELPPPpppppppppppppppppppppppppppppp
Answer:
9 cm
Step-by-step explanation:
cos B = adj/hyp
cos B = BC/AB
cos 25° = 8 m / AB
AB = 8 m / cos 25°
AB = 9 cm
in which row of pascal's triangle do three consecutive entries occur that are in the ratio 3 : 4 : 5
The row in Pascal's triangle where three consecutive entries are in the ratio 3:4:5 is the 62nd row.
To find the row in Pascal's triangle where three consecutive entries are in the ratio 3:4:5, we will use the concept of binomial coefficients.
The binomial coefficient C(n, k) represents the number of ways to choose k items from a set of n items, and is given by the formula -
C(n, k) = n! / (k! (n-k)!).
In Pascal's triangle, the entries are arranged such that the nth row contains n+1 entries, and the kth entry in that row is given by C(n, k).
We can determine the ratio of three consecutive entries in Pascal's triangle by looking at the binomial coefficients C(n, k), C(n, k+1), and C(n, k+2) in a particular row.
In order to find the row where the ratio of these three consecutive entries is 3:4:5, we will set up the following equation:
C(n, k) / C(n, k+1) = 3/4 and C(n, k+1) / C(n, k+2) = 4/5
We will now use the formula for binomial coefficients to simplify these equations as follows -
(n! / (k! (n-k)!) ) / (n! / ((k+1)! (n-(k+1))!)) = 3/4
Similarly,
(n! / ((k+1)! (n-(k+1))!)) / (n! / ((k+2)! (n-(k+2))!)) = 4/5
Solving for n, we can get n = 62
Therefore, the row in Pascal's triangle where three consecutive entries are in the ratio 3:4:5 is the 62nd row.
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one week,Alonso earned $204.40 at his job when he worked for 14 hours.if he is paid the same hourly wage,how many hours would he have to work the next week to earn $554.40
The number of hours that Alonso would have to work to earn $ 554. 40, given the same hourly wage, is 37.9 hours
How to find the number of hours ?To find the number of hours that Alonso needs to work in the week to make $ 554. 40, you first need to find the hourly wage :
= Amount earned / Hours worked
= 204. 40 / 14
= $ 14. 60 per hour
If Alonso wants to earn $ 554 .40 then the number of hours he would need to work is:
= Amount to be earned / Hourly wage
= 554. 40 / 14. 60
= 37.9 hours
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can someone please answer this question
Sarah and Winston buy the same brand of T-shirts from different stores. Sarah pays $8 and Winston pays $4.The simplest way of writing this as a ratio 2:1.
What is Ratio?
A ratio in mathematics demonstrates how many times one number is present in another. For instance, if a dish of fruit contains eight oranges and six lemons, the ratio of oranges to lemons is eight to six. Similarly, the ratio of oranges to the overall amount of fruit is 8:14, while the ratio of lemons to oranges is 6:8.
The relationship between the amounts of two or more objects—referred to as a ratio—indicates how much of one object is contained in the other. The ratio formula can be used to represent a ratio as a fraction. The ratio formula is given as a:b = a/b for any two quantities, let's say a and b.
Two quantities are compared to form a ratio. An equality of two ratios is a proportion. How to format a ratio Analyze the ratio to see whether it is part to part or part to whole. Calculate the whole and the pieces as necessary.
We are given;
Sarah pays $8 for t shirt
Winston Pays $4 for t shirt
So, Simplest way of writing this as in ratio is ;
Sarah/Winston = 8/4=2/1
Hence , this is written in ratio as 2:1.
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saac Newton was consulted about the following problem by Samuel Pepys, who wanted the information for gambling purposes. Which of the following events has the highest probability?
A: At least one 6 appears when 6 fair dice are rolled.
B: At least two 6’s appear when 12 fair dice are rolled.
C: At least three 6’s appear when 18 fair dice are rolled
Event A has the highest probability, which is "at least one 6 appears when 6 fair dice are rolled.
Event A: At least one 6 appears when 6 fair dice are rolled has the highest probability. The probability of rolling at least one 6 with a fair die is 5/6, and the probability of rolling at least one 6 with 6 fair dice is (5/6)^6.
Event B: At least two 6's appear when 12 fair dice are rolled has a lower probability than A.
Event C: At least three 6's appear when 18 fair dice are rolled has a lower probability than B.
So among these three events, this is event A with the highest probability.
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If 7i is a root of a polynomial equation, which of the following is also a root?
7+i
-7i
7-i
none
By polynomial equation, 7i , −7i this we get 1, y = x² + 49 .
What is polynomial equation?The x-axis and the graph's intersection points, or the places where y = 0, are known as the roots.
The roots of y equal 0
By figuring out what x is when x ( 7 I ) = y and y = 0 we can find the root at x = 7 i.
x 7 I is the factor.
By determining the value of x at the point where x ( 7 I ) = y and y = 0, the root at x = 7 I was discovered.
x + 7 I is the factor.
One equation can be created by combining all the variables.
y = ( x − 7 i ) ( x + 7 i)
To make the equation y = (x 7 I (x + 7 I easier to understand, multiply all the elements.
Use the FOIL Method to extend (x 7 I ) (x + 7 I
Put the distributive property to use.
y = x ( x + 7 i ) − 7 i ( x + 7 i )
Put the distributive property to use.
y = x ⋅ x + x ( 7 i ) − 7 i ( x + 7 i )
Put the distributive property to use.
y = x ⋅ x + x ( 7 i ) − 7 i x − 7 i ( 7 i )
Clarify terminology.
x x + x ( 7 I ) x 7 I x ( 7 I ) is the result of combining the opposing terms.
y = x x + 7 I x + 7 I x 7 I ( 7 I ) Rearrange the elements in the terms x ( 7 I ) and 7 I x.
To get y = x x + 0 7 I ( 7 I ), subtract 7 I x from 7 I x.
y = x x 7 I ( 7 I ) is the result of adding x x and 0.
Condense each phrase.
Divide x by x to get y: x 2 7 I (7 I
7 I ( 7 I times itself..
Calculate y = x 2 49 I I by multiplying 7 by 7.
Raising I to the power of 1, y = x²- 49 ( I I
I must be raised to the strength of
1 . y = x 2 − 49 ( i i )
Raise I to the power of 1 and then find y as y = x 2 49 ( I I )
When combining exponents, use the power rule a m a n = a m + n.
y = x ² − 49 i1 + 1
To get y = x ²- 49 I ² ,add 1 and 1.
I ² should be rewritten as 1; y = x ² - 49. - 1
y = x ² + 49 multiplied by 49 by 1.
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14.5x35 (if you do answer can you show work because it tells me to show work and if i don't ill get it wrong.)
The value of the expression 14.5 * 35 is 507.5
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
14.5 * 35
The given expression is a simple expression that can be solved using a calculator
Using a calculator, we have the following solution
14.5 * 35 = 507.5
Hence, the solution is 507.5
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In the expression n +23, 23 is a
Hey there!
Answer:
In the expression, 23 is the constant.
Hope this helps!
Which of the following graphs has a slope of negative three halves and a y-intercept of 2?
graph of a line passing through the points 0 comma 2 and 3 comma 0
graph of a line passing through the points 0 comma 2 and 2 comma negative 1
graph of a line passing through the points 0 comma 3 and 2 comma 0
graph of a line passing through the points 0 comma 3 and 3 comma 1
Answer:
3 3
Step-by-step explanation:
graph of a line passing through the points 0 comma 3 and 3 comma 1
or
Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
A boutique in Belmont specializes in leather goods for men. Last month, the company sold 20 wallets and 14 belts, for a total of $2,202. This month, they sold 20 wallets and 83 belts, for a total of $5,859. How much does the boutique charge for each item?
the boutique charges $
for a wallet, and $
for a belt.
The cost of one belt is $53 and the cost of one wallet is $ 73.
What is the cost of each item?The first step is to set up a system of equation using the information in the question:
20w + 14b = 2202 equation 1
20w + 83b = 5859 equation 2
Where:
b= number of belts sold
w = number of wallets sold
In order to determine the value of b, take the following steps:
Subtract equation 2 from equation 1 :
69b = 3657
Divide both sides of the equation by 69
b = 3657 / 69
b = 53
Substitute for b in equation 1:
20w + 14(53) = 2202
20w + 742 = 2202
20w = 2202 - 742
20w = 1460
w = 1460 / 20
w = 73
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You are tasked with helping plan a school dance. You expect 110 people to attend the dance and need to provide seating for each person. The tables come in two different sizes. The smaller tables can fit 2 people, the larger tables can seat 4 people. Write an equation that describes the relationship between the quantity of small tables and the quantity of large tables, assuming exactly 110 people need seats.
A possible equation to express the situation described is 2x + 4y = 110.
What is an equation?The word equation can be defined as a mathematical expression that uses numbers, symbols, and even letters to mathematically represent a situation.
How to write an expression in this case?Consider the variables:
Tables: There are two types, tables that can fit 2 or 4 peopleTotal of people: 110Now relate these variables using letters and symbols
2x (number of tables that can fit two people) + 4y (number of tables that can fit four people) = 110
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A triangular prism is attached to a rectangular prism as shown below.If W= 6 1/5th inches, x= 5 inches, y= 20 inches, and z=8 3/4th inches, what is the surface area of the figure
Answer: To find the surface area of the figure, we need to add up the areas of all the individual faces. The triangular prism has three rectangular faces and three triangular faces, and the rectangular prism has six rectangular faces.
The triangular prism:
The area of one of the rectangular faces is (x * z)/2 = (5 * 8.75)/2 = 21.875 inches^2
The area of one of the triangular faces is (x * W)/2 = (5 * 6.2)/2 = 15.5 inches^2
The rectangular prism:
The area of one of the rectangular faces is x * y = 5 * 20 = 100 inches^2
So, the total surface area of the figure is
(3 * 21.875) + (3 * 15.5) + (6 * 100) = 65.625 + 46.5 + 600 = 712.125 inches^2
So the surface area of the figure is 712.125 inches^2
Step-by-step explanation:
you throw a small rock straight up with initial speed v0 from the edge of the roof of a building that is a distance h above the ground. the rock travels upward to a maximum height in time tmax, misses the edge of the roof on its way down, and reaches the ground in time ttotal after it was thrown. neglect air resistance. if the total time the rock is in the air is three times the time it takes it to reach its maximum height, so ttotal
The initial velocity is related to the maximum height by the relation [tex]v_{0}=\sqrt{\frac{2gH}{3} }[/tex]
The initial velocity (v0) is the velocity of an object at the beginning of its motion. In the scenario you described, the initial velocity of the rock is the velocity at which it is thrown upward from the edge of the roof of a building.
Without any information about the velocity at which the rock is thrown, it is not possible to determine the initial velocity.
Using the fact that the velocity at maximum height is zero, we can write the following:
[tex]v_{y}=v_{y_{0,t} }+ a_{y}t[/tex]
at maximum height, the equation becomes
[tex]0=v_{0}-gT_{max}[/tex]
=> [tex]T_{max}=\frac{v_{0} }{g}[/tex]
Now, the displacement is (-H)−H) when the rock hits the ground, so we can use one of the kinematic equations to write the following
[tex]y-y_{0}=v_{0}t+\frac{1}{2}a_{y}t^{2}[/tex]
where [tex]y_{0} =0 and y=-H[/tex]
On substituting the values and rearranging we get:
[tex]v_{0}=\sqrt{\frac{2gH}{3} }[/tex]
Therefore, The initial velocity is related to the maximum height by the relation [tex]v_{0}=\sqrt{\frac{2gH}{3} }[/tex].
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1) M.H Find the perimeter of 4.1am
Answer:
Step-by-step explanation:
please convert 1/6 to a decimal probability and round to 2 decimal places students often get exam questions wrong, since they convert to a whole number. you can only do this if you include the ____ %.
You can only convert 1/6 to a decimal probability and round to 2 decimal places if you include the percentage sign (%) at the end.
When converting fractions to decimal probabilities, it is important to include the percentage sign (%) at the end. This is because when converting a fraction to a decimal, the result is not a whole number, but a decimal probability. For example, 1/6 can be written as a decimal probability of 0.17, but it is usually written as 0.17% to indicate the probability of an event occurring. The percentage sign is essential for students to understand that the decimal is a probability, rather than an incorrect answer. Percentage sign also allows the decimal to be rounded to two decimal places, giving a more precise answer. Without the percentage sign, the decimal will appear to be a whole number, which is not the correct answer.
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an appliance store manager noted that the sales of home appliances contributed 74% of the store's profits in the year 2010 and 82% in the year 2011. of the following choices, which statement about home appliance sales is true?
- Home appliance sales increased profits by 9.75%. - Home appliance sales increased profits by 9.75 percentage points. - Home appliance sales increased profits by 8%. - Home appliance sales increased profits by 8 percentage points.
The statement is true about the home appliances sales is "Home appliances sales increased profits by 8 percentage points".
Given that ,
The right answer is that 90% of all random samples of 50 students from this high school would produce a 90% confidence interval that contains the actual mean amount of money students spend on lunch.
an appliance store manager noted that the sales of home appliances contributed
74 % of the store profits in the year 2010, and 82 % in the year 2011.
Thus, the profit in the year 2010 is 74 %.
The profit in the year 2011 is 82 %.
The increased profit from year 2010 to 2011 is ( 82-74 ) % = 8%
Hence, the statement true about the home appliances sales is "Home appliances sales increased profits by 8 percentage points".
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Function Tables 2
Thank you!
To the function u=I+6, for the output 20 input is 14.
What is the function?Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
For the table 2, the rule is u=I+6
For output u=14, we get
14=I+6
I=8 (Input)
For output u=28, we get
28=I+6
I=22 (Input)
For input I=24, we get
u=24+6
u=30 (Output)
For output u=16
16=I+6
I=10 (Input)
For output u=20
20=I+6
I=14 (Input)
For input I=48
u=48+6
u=54 (Output)
Therefore, to the function u=I+6, for the output 20 input is 14.
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Find the value of x.then  round to the nearest 10th
The value of x is 10.79
What is trigonometry ratio?Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with respect to any of its acute angles are known as the trigonometric ratios of that particular angle.
sin (tetha) = opp/ hyp
cos ( tetha) = adj/ hyp
tan ( tetha) = opp/ adj
tetha = 26
hyp = 12
adj = x
cos 26 = x/12
cos 26 × 12 = x
x = 0.899 × 12
x= 10.79
Therefore the value if x is 10.79
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find the exact length (in inches) of the arc of a circle formed by an angle that measures radians if the circle has radius 2 inches. (round you answer to two decimal places.)
The exact length (in inches) of the arc of a circle formed by given angle (in radians) and radius is 5.233 inches.
The radius of a circle and the central angle determine the length of an arc. We are aware that given an angle of 360 degrees, the arc length corresponds to the circumference. Thus, the arc length is determined by multiplying the radius by the Centre angle (in radians).
Arc length = radius x angle(in radians)
Radius = 2 inches
Angle = 5pi/6 radians
Arc length = 2 x (5pi/6)
= 5.233
Hence, the arc length is 5.233 inches.
Correct question :
find the exact length (in inches) of the arc of a circle formed by an angle that measures 5pi/6 radians if the circle has radius 2 inches. (round you answer to two decimal places.)
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Last year, Dion gave $12, 848 to his local church, which he calculated as 27.5 % of his yearly salary.
How much money does Dion make in a year?
Dion will make $16381.2 in a year.
What is simple interest?
A quick and simple way to figure out interest on money is to use the simple interest technique, which adds interest at the same rate for each time cycle and always to the initial principal amount. Any bank where we deposit our funds will pay us interest on our investment. One of the different types of interest charged by banks is simple interest. Now, before exploring the idea of basic curiosity in further detail,
The formula for simple interest is:
S = p*t*r/100
where P is the principal amount of money, R is the interest rate as a decimal, T is the time.
Dion gave $12, 848 to his local church
which he calculated as 27.5 % of his yearly salary.
S = 12, 848 * 1*27.5 /100 = 3533.2
Total = 3533.2+12, 848 = $16381.2
Hence Dion will make $16381.2 in a year.
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Could someone please tell me what 18x+1 equals.
Whatever 18x+1 equals is what it equals
QUIZ:
Composite Figures
What is the best approximation for the area of this figure?
The best approximation for the area of this figure is A = 12+9.125π units²in the given figure.
What is the diameter of triangle?
In a triangle, the diameter is a line segment that passes through the midpoint of one side of the triangle and is perpendicular to that side. It is also the longest chord of the triangle. The length of the diameter is called the diameter of the triangle.
Draw the diameter from point (-1, -5) to point (2, 3).
The triangle has base 3 and height 8.
The diameter of the semicircle is the hypotenuse of the triangle.
d = root(3² + 8²)
d = 8.544
The radius is half the diameter.
r = d/2 = 8.544/2 = 4.272
The total area is the area of the triangle plus the area of the semicircle.
A = 3*8/2 + π*4.272²/2
A = 12+9.125pi units²
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