Answer:
false
Step-by-step explanation:
i² = -1
i² ≠ √-1
The amount of concrete, c, needed to make a walkway around a circular swimming pool varies directly as the square of the diameter, d, of the
pool. Which statement is true?
OA If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 2.
•B. If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 4.
OC. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 2.
OD. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 4.
Answer:
Step-by-step explanation:
For all Plato users
The amount of concrete needed after doubling the diameter of the circle will be multiplied by 4 by the initial amount. Hence, the correct option is (B).
What are direct proportions?Direct proportions are the proportions where a variable changes with another variable by direct mean so the coefficient of constant will be direct.
For example y ∝ x² here y varies with respect to x square.
y = Kx² where k will be the coefficient of constant.
Given that amount is Amount ∝ d²
Amount = k d²
By doubling the diameter
Amount = k (2d)²
Amount = 4 kd²
Amount = 4 × initial amount hence, the amount will be multiplied by 4.
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I need help i dont understand what's it asking me to do
You have to prove that 2 angles are conguent to the other triangles angles; example: ∠A≅∠C by the additon POC (2 of those) and then one side; example: AB≅BA by the reflexive POE (1 of those)
I cant see the triangles but thats how you do them, also im learning this right now too, look up the triangle congruence things like ASA ≅ SSS≅ HL≅ exc. a chart will explain how to prove them using that:
PLEASE ANSWER THIS ASAP! What is the length of a diagonal of a cube with a side length of 3 cm?
Answer:
√27
Step-by-step explanation:
3×√3 = 5.196
√27 = 5.196
Answer:
27
Step-by-step explanation:
StartRoot 27 EndRoot cm
What is 4/5 divided by 3/4 ?
if you multiply an even number and an odd number will the product be odd or even?
Answer: It will be an even number.
Step-by-step explanation: ........
Please help me with this question
Answer:
A
Step-by-step explanation:
Remark
f and d are equal (and acute) because they are corresponding angles.
82 and f are supplementary, so we can find f
Finding f
f + 82 = 180
f = 180 - 82
f = 82
Finding d
d = f
d = 82
The intensity,I, of light received at a source varies inversely as the square of the distance, d, from the source. If the light intensity is 33 foot-candles at 20 feet, find the light intensity at 5fee
Answer:
The light intensity is 528 foot-candles at 5 feet
Step-by-step explanation:
If x and y are in inverse variation, then x y = k, where k is the constant of variation
In the given question
∵ The intensity I, of light received at a source, varies inversely as the
square of the distance d, from the source
→ That means I × d² = k, where k is the constant of variation
∴ I × d² = k
∵ I = 33 foot-candle at d = 20 feet
→ Substitute them in the rule above to find k
∴ 33 × (20)² = k
∴ 33 × 400 = k
∴ 13200 = k
→ Substitute the value of k in the equation
∴ I × d² = 13200 ⇒ equation of variation
∵ d = 5
→ Substitute it in the equation to find I
∵ I × (5)² = 13200
∴ I × 25 = 13200
→ Divide both sides by 15
∴ I = 528
∴ The light intensity is 528 at 5 feet
Dan can ride his skateboard 2 miles in 10 minutes. How many miles can he ride his skateboard in 30 minutes?
Answer:
6
Step-by-step explanation:
zero of functions equations
Answer:
what?
Step-by-step explanation:
What is the remainder of 715 divided by 9
Answer:
79 R 4 or 79 R 4/9
Step-by-step explanation:
Answer:
honestly idek
Step-by-step explanation:
just look it up
The data below represents the number of workouts each member of Big Muscles Gym attended last month. 4,5,7,7,7,8,10,11,11,13,13,144,5,7,7,7,8,10,11,11,13,13,144, comma, 5, comma, 7, comma, 7, comma, 7, comma, 8, comma, 10, comma, 11, comma, 11, comma, 13, comma, 13, comma, 14 Which box plot correctly summarizes the data?
Given:
The data values are 4, 5, 7, 7, 7, 8, 10, 11, 11, 13, 13, 14.
To find:
The box plot for the given data set.
Solution:
The data values are
4, 5, 7, 7, 7, 8, 10, 11, 11, 13, 13, 14
Divide these values in two equal parts.
(4, 5, 7, 7, 7, 8), (10, 11, 11, 13, 13, 14)
Divide each group again in two equal parts.
(4, 5, 7), (7, 7, 8), (10, 11, 11), (13, 13, 14)
Here,
Minimum value = 4
[tex]Q_1=\dfrac{7+7}{2}=\dfrac{14}{2}=7[/tex]
[tex]Median=\dfrac{8+10}{2}=\dfrac{18}{2}=9[/tex]
[tex]Q_3=\dfrac{11+13}{2}=\dfrac{24}{2}=12[/tex]
Maximum value = 14
It means, the starting point is 4 and end point is 14 of the box plot.
Box is lies from 7 to 12 and one line inside the box at 9.
Therefore, the box plot of the given data set is shown below.
15 less than the quotient of a number and 6 is 30
Select the correct answer from each drop-down menu.
Need help ASAP I have to finish this today <3
Angle D and angle B are equal.
Hari's weekly allowance varies depending on the number of chores he does. He received $20 in allowance the week he did 14 chores, and $14 in allowance the week he did 2 chores. Write an equation for his allowance in slope-intercept form. The equation for Hari's allowance in slope-intercept form is
explain better or brainliest cant do that
PLZ HELP ME ASAP!!!!
Answer:
I cant see the picture
Step-by-step explanation:
I cant see the picture
5(88) using distributive property and mental math
Someone help me out please
Answer:
0.5-1
Step-by-step explanation:
3.3 x 10*9 +2.6 x 10*9 +7.7 × 10*8
Answer:
23.4x10+913
Step-by-step explanation:
Answer:
1147 okayyyyyyyyyyyyyyyyyyhhhhyhhhhhhyyyyyyyy
Here is a triangular prism 5 cm 1 What is the volume of the prism, in cubic centimeters? 2. What is the surface area of the prism in square centimeters? For your ans, just type the number.)
Answer:
Volume = 100cm³
surface area=
The volume of Triangular Prism is 120 [tex]cm^{3}[/tex] and the surface area of triangular prism is 184 [tex]cm^{2}[/tex]
What is triangular prism?A triangular prism is a 3D shape with two identical faces in the shape of a triangle connected by three rectangular faces. The rectangular faces are referred to as the lateral faces, while the triangular faces are called bases. The bases are also called the top and the bottom (faces) of the prism.
What is the volume of triangular prism?The volume of a triangular prism is the product of its triangular base area and the length of the prism.
Volume of Triangular Prism = ½ × b × h × l,
where b is the base length of the triangle, h is the height of the triangle, and l is the length of the prism.
What is the surface area of triangular prism?The surface area of a triangular prism is the area that is occupied by its surface. It is the sum of the areas of all the faces of the prism.
Surface area = (Perimeter of the base × Length) + (2 × Base Area)
According to the question
Length of the prism. = 10cm
Base length of the triangle = 6 cm
Height of the triangle = 4 cm
1> Volume of Triangular Prism = ½ × b × h × l
= ½ × 6 × 4 × 10
= 120 [tex]cm^{3}[/tex]
2> The surface area of triangular prismAs, Base area in Triangular Prism base is always triangular part
i.e Base area = 1/2 * 4 * 6
= 12 [tex]cm^{2}[/tex]
Perimeter of the base = 5 + 5 + 6
= 16 cm
Length of the prism = 10 cm
Surface area = (Perimeter of the base × Length) + (2 × Base Area)
substituting the value
Surface area = (16 * 10 ) + (2 * 12 )
= 184 [tex]cm^{2}[/tex]
Hence, The volume of Triangular Prism is 120 [tex]cm^{3}[/tex] and the surface area of triangular prism is 184 [tex]cm^{2}[/tex]
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using long Division perform (a²-22a+17)÷(a-13)
Answer:
wherw are yiu coms on email kingrizvi218
solve the literal equation for f: - 3f = g for f
A.f=g/-3
B.g+3=f
C.f=g-3
Answer:
i think its a
Step-by-step explanation:
30 POINT QUESTION !! Will make the brainliest
Find all the Missing Angles
Answer:
need more information
Maya and Edward cut lawns in the summer to earn spending money. Maya has a newer lawnmower, so Edward takes 15 minutes longer to cut a lawn than Maya. Working together they can both cut a lawn in 18 minutes. How long would it take Edward to cut a lawn alone?
Answer:
The answer would be 45 minutes.
Step-by-step explanation:
Just skipped to the answer on Edementum.
A fraction is a way to describe a part of a whole. The time it takes Edward to cut the lawn alone is 45 minutes.
What is a Fraction?A fraction is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25.
Let the time taken by Maya to lawn the garden be x.
The rate at which Maya lawn = 1/x
Maya has a newer lawnmower, so Edward takes 15 minutes longer to cut a lawn than Maya. Therefore,
The rate at which Edward lawn = 1/(x+15)
Working together they can both cut a lawn in 18 minutes.
The rate at which they both work = 1/18
Now, the rate of working can be compared as,
1/x + 1/(x+15) = 1/18
(x+ x + 5)/x(x+15) = 1/18
(2x + 15)18 = x(x+15)
36x + 270=x² + 15x
x²-21x-270=0
x = 30, -9
Since time can not be negative. Therefore, the time it takes Edward to cut the lawn alone is,
x + 15
= 30 + 15
= 45 minutes
Hence, the time it takes Edward to cut the lawn alone is 45 minutes.
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Rebecca already knew 1 appetizer recipe before starting culinary school, and she will learn 3
new appetizer recipes during each week of school. After how many weeks of culinary school
will Rebecca know a total of 43 appetizer recipes?
Answer:
14 weeks
Step-by-step explanation:
so from what we know she already learned one appetizer recipe so she needs to learn 42 more so what we need to do since it's three every week we need to multiply three until we are able to get 42 so three times 14 gets 42 so that means that the answer would be 14
The table below shows four systems of equations:
System 1 System 2 System 3 System 4
4x − 5y = 2
3x − y = 8 4x − 5y = 2
10x − 7y = 18 4x − 5y = 2
3x − 8y = 4 4x − 5y = 2
10x + 3y = 15
Which pair of systems will have the same solution? (5 points)
C.B. Clothing ordered sweaters at a wholesale cost of $20 each. The store marked up the price 50 percent above the wholesale cost to use as their selling price. After every month that the sweater didn't sell, the store reduced the selling price by 20 percent. After how many monthly price reductions did the price dip below the wholesale cost? after 1 monthly price reduction after 2 monthly price reductions after 3 monthly price reductions after 4 monthly price reductions
Answer: after 2 monthly price reductions
Step-by-step explanation:
Given that :
Wholesale cost = $20 each
Markup = 50%
Selling price = $20 + (50% * 20) = $30
After each month selling price reduces by 20%;
Dip in price per month for which item didn't sell ;
Let m = Number of months
$30 - 0.2(30)m = $30 - 6m
After how many monthly price reductions did the price dip below the wholesale cost?
$30 - 6m < $20
-6m < $20 - $30
-6m < - $10
m > 10/6
m > 1.667
m = 2
After 2 monthly price reduction
Answer:
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
Step-by-step explanation:
Due at midnight!!! Help
Find the value of x so that the function has the given value. q(x)= 0.5x -3; q(x)= -4
By algebra properties, the x-value such that expression 0.5 · x - 3 = - 4.
How to clear an equation with a single variable
In this problem we must determine the value of x such that the following expression is satisfied:
0.5 · x - 3 = - 4
This can be solved by means of algebra properties. First, write the entire expression:
0.5 · x - 3 = - 4
Second, clear the variable x by algebra properties:
0.5 · x = 3 - 4
0.5 · x = - 1
x = - 2
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You toss a coin, roll a dice, and choose a card out of 52 decks of cards. What is the likely hood that you will toss tails, roll an odd number, and choose ace.
Answer:
~0.02% chance
Step-by-step explanation:
coin: 1/2 chance
dice: 3/6 chance
cards: 4/52 chance
1/2x3/6x4/52 = 0.02% percent chance