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sweet [91]
3 years ago
11

Sierra applies a coat of epoxy paint to the four sides and floor of a rectangular swimming pool. The pool is 4 feet deep, 18 fee

t long, and 12 feet wide. One gallon of paint covers 155 square feet. Does sierra use 3 gallons of paint or 4 gallons of paint? Explain
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

Answer:

4 gallons of paint

Step-by-step explanation:

We solve using the formula for surface area of rectangular prism.

A=2(wl+hl+hw)

Where:

w = Width

h = Height

l = Length

The pool is 4 feet deep, 18 feet long, and 12 feet wide.

Hence,

=2 × (12 × 18 + 4 × 18 + 4 ×12)

=672 square feet

One gallon of paint covers 155 square feet.

Hence,

155 square feet = 1 gallon of paint

672 square feet = x

Cross Multiply

155 square feet × x = 672 square feet × 1 gallon of paint

x = 672 square feet × 1 gallon of paint/ 155 square feet

x = 4.335483871 gallons of paint

Therefore, based on the calculation above, approximately to the nearest whole number, Sierra uses 4 gallons of paint

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Rae planted a square garden that covers an area of 200 ft.² how many feet of fencing does he need to surround the garden
inessss [21]
To find this, first we have to find the square root of 200, which is about 14.14

Now we multiply 14.14 * 4 = 56.56

So Rae will need about 56.56 feet of fencing to surround the garden.
5 0
3 years ago
leroy spent $2.50 on a kazoo. he spent $0.25 less than that on a yoyo. he bought a slice of pizza for $1.50, and a juice for hal
lakkis [162]

The answer is to your question is 6.5

5 0
4 years ago
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A local hamburger shop sold a combined total of 628 hamburgers and cheeseburgers on Thursday. There were 72 fewer cheeseburgers
lys-0071 [83]

Answer:

278 cheeseburgers and 350 hamburgers sold on Thursday

Step-by-step explanation:

To confirm that these combined equal 628 we can add them together using the equation 278 + 350. Once confirm that these both equal 628 when combined, we can find the difference between the 350 hamburgers and 278 cheeseburgers by subtracting one from the other using the equation, 350 - 278. When you do that, you will get a difference of 72 which means that there were 72 fewer cheeseburgers sold than hamburgers.

(sorry if this is confusing, I'm not good at explaining things)

8 0
3 years ago
Find a and b, if the points P(6,0) and Q(3,2) lie on the graph of ax + by =12
Musya8 [376]
The given equation is:
ax + by = 12
We are given that the two points (6,0) and (3,2) belong to this line. This means that these two points satisfy the equation of the line.
Therefore, to get the value of a and b, we will substitute with the given points in the equation and solve the resulting equations for a and b as follows:

For the point (6,0):
ax + by = 12
a(6) + b(0) = 12
6a = 12
a = 12/6 = 2

For point (3,2):
ax + by = 12
(2)(3) + b(2) = 12
6 + 2b = 12
2b = 12-6 = 6
b = 3

Based on the above calculations:
a = 2 and b = 3, therefore, the equation is:
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6 0
3 years ago
Is the expression 4x − 3(5x − 1) is equivalent to the expression 3 + 9x.<br><br> True<br> False
butalik [34]

Answer:

False

Step-by-step explanation:

  1. 4x − 3(5x − 1) simplifies to 3 - 11x, which is not the same as 3 + 9x, so they are not equal.

I hope this helps!

3 0
3 years ago
Read 2 more answers
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