The equivalent equations that have the value x = 3 are:
2 + x = 5, x + 1 = 4, and (-5) + x = -2.
Equations are considered equivalent if they have the same solution(s). In other words, if you solve each equation for the variable, you should end up with the same value(s).
Let's look at the options given:
2 + x = 5: This equation can be solved by subtracting 2 from both sides, leaving x = 3.
x + 1 = 4: This equation can be solved by subtracting 1 from both sides, leaving x = 3.
9 + x = 6: This equation can be solved by subtracting 9 from both sides, leaving x = -3.
x + (-4) = 7: This equation can be solved by adding 4 to both sides, leaving x = 11.
-5 + x = -2: This equation can be solved by adding 5 to both sides, leaving x = 3.
So, we can see that the first, second, and fifth equations are equivalent since they all simplify to x = 3. The third and fourth equations are not equivalent to any of the other equations, since they have different solutions.
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PLEASE HELP ME SOLVE THIS ANSWER
The function of C(d) in the given inverse function is determined as C(d) = (d - 3)/10
option A.
What is the inverse of the function?The inverse of the given function is calculated by applying the principle of inverse of functions as follows;
let C(d) = 10d + 3
The inverse of the function is calculated as follows;
C = 10d + 3
make d the subject of the formula;
10d = C - 3
d = (C - 3)/10
Now replace, C with d;
C = (d - 3)/10
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i need help again
plss
Step-by-step explanation:
answer is 10 hope it's helps
Point C is on line segment BD. Given CD = 5 and BC = 4, determine the length
BD.
The length of BD is equal to 9 units.
How to determine the midpoint of a line segment?In Mathematics, the midpoint of a line segment with two end points can be calculated by adding each end point on a line segment together and then divide by two (2).
Since C is the midpoint of line segment BD, we can logically deduce the following relationship:
Line segment BD = Line segment BC + Line segment CD
By substituting the given line segments into the equation above, we have the following:
Line segment BD = 4 + 5
Line segment BD = 9 units.
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Timothy and Sean are masseur. Timothy charges $45 for each massage and Sean charges $55 for each massage. This week
Timothy made $102 in tips and Sean made $96 in tips. Given that T and S represent the number of massages given by Timothy
(T) and Sean (S), which expression can be used to represent their combined earnings for the week?
Answer: 45T + 55S +102 + 96= Combined income
Step-by-step explanation:
Please help me with this 19-20
use average rates of change to generate a liner function model.
Answer:
To generate a linear function model using average rates of change, we need to have two points on the line. Let's suppose we have two points (x1, y1) and (x2, y2) on the line, where x2 > x1. Then the slope of the line, m, can be calculated as:m = (y2 - y1) / (x2 - x1)This represents the average rate of change of y with respect to x between the two points.Once we have the slope, we can use the point-slope form of the equation of a line to write the equation of the line:y - y1 = m(x - x1)where (x1, y1) is one of the points on the line.To simplify this equation, we can rearrange it to slope-intercept form, y = mx + b, where b is the y-intercept. We can solve for b by plugging in the coordinates of one of the points on the line:y1 = mx1 + bb = y1 - mx1Once we have m and b, we can write the equation of the line in slope-intercept form:y = mx + bHere's an example: Suppose we have the two points (2, 5) and (4, 9). The slope of the line between these two points is:m = (y2 - y1) / (x2 - x1) = (9 - 5) / (4 - 2) = 2Using point-slope form, we can write the equation of the line as:y - 5 = 2(x - 2)Simplifying, we get:y = 2x + 1So the linear function model generated using average rates of change is y = 2x + 1.
Step-by-step explanation:
Anika has an outdoor storage bin shaped like a rectangular prism that holds her pool toys and inflatables. The base of the storage bin measures 5.5 feet by 3 feet. The total surface area of the storage bin is 75.5 square feet. What is the height of the storage bin in feet?
Answer:
Step-by-step explanation:
20=17+12+9 so the answer is 4982
The sine of an angle 0 in the third quadrant is -0.5. What is the value of cos(0)?
The sine of an angle 0 in the third quadrant is -0.5. So the value of cos∅ is -√(3)/2.
In the third quadrant, both sine and cosine are negative. We know that the sine of ∅ is -0.5, so we can use the Pythagorean identity to find the cosine of ∅:
sin²(∅) + cos²(∅) = 1
Substituting -0.5 for sin(∅), we get:
(-0.5)² + cos²(∅) = 1
Simplifying:
0.25 + cos²(∅) = 1
cos²(∅) = 1 - 0.25
cos²(∅) = 0.75
Taking the square root of both sides:
cos(∅) = ±√(0.75)
Since we're in the third quadrant where cosine is negative, we take the negative square root:
cos(∅) = -√(0.75)
Simplifying the square root:
cos(∅) = -√(3/4)
cos(∅) = -√(3)/2
Therefore, the value of cos(∅) is -√(3)/2.
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Us the information above to answer the following questions: What does the acronym VAT stand for? How many items on the till slip are zero rated? Give a reason why the items are zero rated. 13 If Mr Se hole decides to buy at a later stage 6 kg of rice (packed and priced in the same way as on the till slip), what will he pay for the rice? Mr Sethole states that he paid R23,99 for playboy deodorant (150 ml). Is Mr Sethole's staten ent correct? Do all the necessary calculations to support your answer. Show how the VAT amount of R17,36 was calculated. Hence, calculate the total cost excluding VAT.
Answer:
A food manufacturer may use zero-rated goods in the manufacturing of a food product, but when the consumer buys the final product, it includes a VAT.
Step-by-step explanation:
The manager of a pizza shop has $750 in tips
to distribute among its employees. He has
already distributed $550. If x equals the
amount that is left to distribute, choose the
equation to solve the problem.
O x + 750 = 550
Ox+ 550 = 750
Ox-550 = 750
O x-750 = 550
Answer:
Step-by-step explanation:
The equation to solve the problem is:
x + 550 = 750
Explanation:
The manager has already distributed $550, and the remaining amount to distribute is represented by the variable x. Adding the distributed amount to the remaining amount should equal the total amount of tips the manager has, which is $750. Therefore, the correct equation is x + 550 = 750.
175
m/1 =
m/2=
160°
determine the requested value below
The measures of angle 1 and angle 2 are 12.5 degrees
We have to find the measures of angle 1 and angle 2
The circle will have 360 degrees
The unknown arc length be taken as x
175+160+x=360
Add the like terms
335+x=360
Subtract 335 from both sides
x=360-335
x=25
So angle m∠1 = 1/2(25)
m∠1 is 12.5
m∠1 = m∠2 as both are equal.
m∠2 = 12.5 degrees
Hence, the measures of angle 1 and angle 2 are 12.5 degrees
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Find the missing side length.
a
26
24
Answer:
a = 10
Step-by-step explanation:
using Pythagoras' identity in the right triangle
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 24² = 26²
a² + 576 = 676 ( subtract 576 from both sides )
a² = 100 ( take square root of both sides )
a = [tex]\sqrt{100}[/tex] = 10
28. Find the area of the above triangle
B. 40cm' C. 32cm²
E. 16cm²
A. 64cm
D.20cm²
The area of the given triangle, given the height and the type of triangle would be E. 16 cm ²
How to find the area ?To find the area of an equilateral triangle when given just the height, the formula is:
= ( height ² x √ 3 ) / 2
We are given a height of 4 cm.
The area of the triangle is therefore :
= ( height ² x √ 3 ) / 2
= ( 4 cm ² x √ 3 ) / 2
= ( 16 x √ 3 ) / 2
= 27. 712 / 2
= 13. 85
The closest option is 16 cm ² so this is the answer.
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Create an expression with at least two different operations that has an answer of 14 . Please help me and explain step by step!
Answer:
Step-by-step explanation:
There are many expressions that could have an answer of 14, but here’s one example:
(7 x 2) - 1 = 14
Let’s break it down step by step:
The first operation in this expression is multiplication. We multiply 7 by 2, which gives us 14.
7 x 2 = 14
The second operation in this expression is subtraction. We subtract 1 from the result of our multiplication, which gives us 14.
14 - 1 = 14
So, the final expression is (7 x 2) - 1 = 14, which has an answer of 14.
Keep in mind that there are many other expressions that could have an answer of 14 as well. This is just one example!
Answer:
(49÷7)2=14
(2×3.5)2=14
Step-by-step explanation:
I honestly don't know of this is exactly what our asking for but here are two equations that are equal to 14, hope this helps
find the quadratic equations
please help
brainleist alsoo
Answer:
[tex]y = (x-1)^2-9[/tex]
Step-by-step explanation:
The form of a quadratic equation is [tex]y = a(x-h)^2+k[/tex]. Lets identify each change in words before switching to the formula:
Shifted 1 right
Shifted 9 down
No stretch horizontally
No stretch vertically.
Our equation will be [tex]y = (x-1)^2-9[/tex].
Write an equation for a function that has a graph with the given characteristics.
The shape of y= |x| that has been shrunk vertically by a factor of 2/9.
----------------------.
The absolute value function y = |x| looks like a "V" shape, with the vertex at the origin and the arms going off to positive and negative infinity. To shrink this function vertically by a factor of 2/9, we can multiply the entire function by 2/9:
y = (2/9)|x|
This new function has the same "V" shape, but the y-values are only two-ninths as large as they would be for the original function at any given value of x. The vertex of the new function is still at the origin, and the arms still go off to positive and negative infinity.
a baseball diamond is a square with sides of 90 feet. what is the shortest distance ,to the nearest tenth of a foot, between first base and third base?
Answer:
The distance from first base to third base is 127.3 ft,
The spinner will be spun 2 times.
What is the probability that both spins result in the same color?
Note that the the probability that both spins result in the same color is 0.28
How did we get this ?Probability of getting ...
red on both spins = (1/5) x (1/5) = 1/25
yellow on both spins = (1/5) x (1/ 5) = 1/25
blue on both spins = (1/5) x (1/5 = 1/25
pink on both spins = (2/5)x (2/5) = 4/25
So the total probability of getting the same color in both spins is computed as
= 1/25 + 1/25 + 1/25 + 4/25
= 7/25 or 0.28
So the correct asnwer is 0.28 or 7/25
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Helpppp pleaseeeee :(
Answer:
[tex]\large {\mbox{R = 3.6}}[/tex]
Step-by-step explanation:
The formula for finding a magnitude of an earthquake on the Richter Scale is given as
[tex]R = \log\left(\dfrac{A}{A_0}\right)\\[/tex]
[tex]\rm{where}\\\textrm{A - measure of amplitude of quake wave}\\\textrm{$A_0$ = amplitude of smallest detectable wave}\\[/tex]
Given A = 0.3954 and A₀ = 0.0001, we can plug in these values into the R equation to get
[tex]R = \log\left(\dfrac{0.3954}{0.0001}\right)\\\\= \log(3954)\\\\= 3.597\\\\= 3.6\text { rounded to the nearest tenth}[/tex]
2. A triangular field ABC is such that AB-90m, BC = 30m and
AC-85m Make a scale drawing of it, using a scale of 1 cm to 10m.
From
your
scale drawing, find the actual distance from A to the
mid-point of BC and the the actual distance from B to the
mid-point of AC.
The actual distance from A to the mid-point of BC is 42 m.
The actual distance from B to the mid-point of AC is 27 m.
A scale of 1 cm to 10 m can draw the triangular field ABC as follows:
C
/ \
85 / \ 90
/ \
A-------B
30
Here, we draw AB as a horizontal line segment of length 9 cm (since AB is 90 m and the scale is 1 cm to 10 m), BC as a vertical line segment of length 3 cm (since BC is 30 m and the scale is 1 cm to 10 m) and AC as the hypotenuse of a right triangle with legs of length 8.5 cm and 9 cm (since AC is 85 m and AB is 90 m).
We can use a ruler to measure the actual distances from A to the mid-point of BC and from B to the mid-point of AC on the scale drawing.
The actual distance from A to the mid-point of BC, we first locate the mid-point of BC on the scale drawing is at a distance of 1.5 cm from B.
Then, we measure the distance from A to the mid-point of BC on the scale drawing is approximately 4.2 cm.
The scale of 1 cm to 10 m, we can convert this to the actual distance:
Actual distance = 4.2 cm × 10 m/cm
= 42 m
The actual distance from B to the mid-point of AC first locate the mid-point of AC on the scale drawing is at a distance of 4.25 cm from A.
Then, we measure the distance from B to the mid-point of AC on the scale drawing is approximately 2.7 cm.
Using the scale of 1 cm to 10 m, we can convert this to the actual distance:
Actual distance = 2.7 cm × 10 m/cm
= 27 m
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What would a map's scale be if 6 miles measured 8 inches?
For the quadratic equation 2x² - 6x + 7 = 0, enter the correct values of a, b, and c.
X =
-b ± √√b² - 4ac
2a
The values of a is 2, b is -6 and c is 7 from the quadratic equation 2x² - 6x + 7 = 0
The given quadratic equation is 2x² - 6x + 7 = 0
A quadratic equation is a second-order polynomial equation in a single variable x , ax²+bx+c=0. with a ≠ 0 .
When we compare the given quadratic equation with standard form we get the values of a , b and c
a=2
b=-6
c=7
Hence, the values of a is 2, b is -6 and c is 7 from the quadratic equation 2x² - 6x + 7 = 0
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Please help soon need bad
The difference between the interquartile range of Matt's and Linda's remaining vacation days is 1.5.
The interquartile range will be calculated through the formula -
[tex] Q_{3}[/tex] = [tex] Q_{2}[/tex] - [tex] Q_{1}[/tex]
Firstly calculating [tex] Q_{3}[/tex] for Matt
[tex] Q_{2}[/tex] = (4+5)/2
[tex] Q_{2}[/tex] = 4.5
[tex] Q_{3}[/tex] = (8+12)/2
[tex] Q_{3}[/tex] = 10
Finding interquartile range now -
[tex] Q_{3}[/tex] = 10 - 4.5
[tex] Q_{3}[/tex] = 5.5
Now, performing calculation for Linda
[tex] Q_{2}[/tex] = (0+10)/2
[tex] Q_{2}[/tex] = 5
[tex] Q_{3}[/tex] = (11+13)/2
[tex] Q_{3}[/tex] = 12
Finding interquartile range now -
[tex] Q_{3}[/tex] = 12 - 5
[tex] Q_{3}[/tex] = 7
The difference between the interquartile range of Linda and Matt will be calculated as:
Difference = Interquartile range of Linda - Interquartile range of Matt (as we see Linda has greater interquartile range than Matt)
Difference = 7 - 5.5
Difference = 1.5
Hence, the difference between interquartile range of days is 1.5.
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251,400 kilometers. What do you estimate is the circumference of the moon’s orbit around the earth?
The estimated circumference of the Moon's orbit around the Earth is approximately 1,579,896.8 kilometers.
The circumference of the Moon's orbit around the Earth can be estimated using the given distance of 251,400 kilometers.
The circumference of a circle is calculated using the formula:
Circumference = 2 × π × Radius
The Moon's orbit around the Earth can be considered as a circular path.
We can estimate the circumference by considering the given distance as the radius of the circle.
Circumference ≈ 2 × π × 251,400 kilometers
Using an approximate value of π as 3.14, we can calculate the estimated circumference:
Circumference ≈ 2 × 3.14 × 251,400 kilometers
Circumference ≈ 1,579,896.8 kilometers
The stated distance of 251,400 kilometres can be used to calculate the circumference of the Moon's orbit around the Earth.
In order to determine a circle's circumference, use the following formula:
Circumference equals two radii.
It is possible to think of the Moon's orbit around the Earth as a circle.
By using the specified distance as the circle's radius, we can calculate the circumference.
Approximately 251,400 km around.
We may determine the approximated circumference using an approximation of as 3.14:
= 2 × 3.14 × 251,400 kilometers around the earth.
1,579,896.8 km around the circumference
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A potter made two cylindrical cups; one with a radius of 4 cm and a height of 5 cm, the other with a radius of 3 cm and a height of 9 cm. how much more liquid does the larger cup hold? please help and show work on a piece of paper i will mark you brainliest!!
The amount of liquid that the larger cup holds more than the smaller cup would be =3.14cm³
How to calculate the volume of the cylindrical cups?To calculate the volume of the cylindrical cups, the formula for volume of cylinder should be used an it is given below as follows;
Volume of cylinder = πr²h
For smaller cup;
radius = 4cm
height = 5cm
volume = 3.14×4×4×5
= 251.2cm²
For the larger cup;
radius = 3cm
height= 9cm
volume = 3.14×3×3×9
= 254.34
The difference between the two cups = 254.34 -251.2 = 3.14cm³
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the length of a rectangle is 5 meters longer than the width. if the area is 23 square meters, find the rectangles dimensions. round to the nearest tenth of a meter
Answer:
The rectangle is 7.9 meters by 2.9 meters.
Step-by-step explanation:
Let l be the length and w be the width
l = w + 5
A = 23 m²
Formula: A = lw
Solve for the dimensions
23 = (w+5)w
23 = w² + 5w
w² + 5w - 23 = 0
Use quadratic formula to find the possible value/s of w
[tex]w = \frac{-b+-\sqrt{b^2-4ac} }{2a}\\ w = \frac{-5+-\sqrt{5^2-4(1)(-23)} }{2(1)} \\w = \frac{-5+-\sqrt{25+92} }{2}\\ w = \frac{-5+-\sqrt{117} }{2} \\w = \frac{-5+-\sqrt{9(13)} }{2} \\w = \frac{-5+-3\sqrt{13} }{2}\\ w = \frac{-5+3\sqrt{13} }{2} = 2.9\\ w = \frac{-5-3\sqrt{13} }{2} = -7.9[/tex]
Since we're dealing with dimensions, take the positive value which is 2.9.
w = 2.9 m
Substitute the value to l = w + 5
l = 2.9 + 5
l = 7.9 m
A piece of lumber 2.8 meters long weighs 24.5 kilograms. A piece 0.8 meter long is cut from
the 2.8-meter length. Determine the weight of the 0.8-meter piece.
The weight of the 0.8-meter piece is 19.6 kilograms.
We can use the ratio of length to weight to determine the weight of the 0.8-meter piece.
Let's call the weight of the 2.8-meter piece "W₁" and the weight of the 0.8-meter piece "W₂". Then we have:
W₁/2.8m = 24.5kg/1m
Solving for W₁, we get:
W₁ = (24.5kg/1m) x 2.8m = 68.6kg
Now we can use the same ratio to find W₂:
W₂/0.8m = 24.5kg/1m
Solving for W₂, we get:
W₂ = (24.5kg/1m) x 0.8m = 19.6kg
Therefore, the weight of the 0.8-meter piece is 19.6 kilograms.
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Solve the problem. What is the slope of a roof that rises 12 feet over a run of 28 feet? a. StartFraction negative 3 Over 7 EndFraction c. StartFraction 3 Over 7 EndFraction b. StartFraction negative 7 Over 3 EndFraction d. StartFraction 7 Over 3 EndFraction
Answer:
im pretty sure the slope would be 3 over 7 (3/7)
Step-by-step explanation:
Point O is the center of the circle in the diagram. What is
mBCA?
A. 80°
B. 75°
C. 70°
D. 65°
The measure of m∠BCA is equal to: C. 70°
What is a circle?In Mathematics and Geometry, a circle is a closed, two-dimensional curved geometric shape with no edges or corners.
Additionally, a circle refers to the set of all points in a plane that are located at a fixed distance (radius) from a fixed point (central axis), and a full circle always has a measure of 360 degrees.
In this context, the sum of an angle around any point is equal to 360 degrees;
m∠(BOA) = 360 - 250
m∠(BOA) = 110°
Also, the sum of all the interior angles inscribed in this circle, CAOB = 360 degrees;
m∠BCA = 360 - (110 + 90 + 90)
m∠BCA = 70°
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y intercepts of f((x)=x^{2}+2x-3
Answer:
The y-intercept is -3
Written as a point it is (0, -3)
Step-by-step explanation:
To find the y-intercept, let x = 0
(and to find x-intercepts, let y = 0)
So let's let x = 0
f(x) = x^2 + 2x - 3
y = x^2 + 2x - 3
y = 0^2 + 2(0) - 3
y = -3
This means the y-intercept is -3. The graph crosses the y-axis at -3. This is the point (0, -3).