Answer:
b. 8 inches wide and 25 inches long
Step-by-step explanation:
Here are the options
5 inches wide and 25 inches long
b. 8 inches wide and 25 inches long
c. 15 inches wide and 15 inches long
d 15 inches wide and 25 inches long
Area of a rectangle = length x width
10 x 20 = 200
first option
5 x 25 = 125 does not have the same area as the one lanu drew
second option
8 x 25 = 200 has the same area as the one lanu drew
third option
15 x 15 = 225 does not have the same area as the one lanu drew
fourth option
15 x 25 = 375 does not have the same area as the one lanu drew
Answer:
yes
Step-by-step explanation:
Answer:
832 square feet of paint is needed to covet pool walls
Step-by-step explanation:
<u><em>The correct question is</em></u>
A swimming pool is 40 ft long 12 ft <em><u>wide</u></em> and 8 feet deep how many square feet of paint is needed to cover the walls of the pool?
To find out the area of the walls, multiply the perimeter of the base by the deep of the walls
so
![A=2(L+W)D](https://tex.z-dn.net/?f=A%3D2%28L%2BW%29D)
we have
![L=40\ ft\\W=12\ ft\\D=8\ ft](https://tex.z-dn.net/?f=L%3D40%5C%20ft%5C%5CW%3D12%5C%20ft%5C%5CD%3D8%5C%20ft)
substitute
![A=2(40+12)8](https://tex.z-dn.net/?f=A%3D2%2840%2B12%298)
![A=832\ ft^2](https://tex.z-dn.net/?f=A%3D832%5C%20ft%5E2)
therefore
832 square feet of paint is needed to covet pool walls
Greatest Common Factor:
We look for a number that can simultaneously go into both numbers:
4: 28 70
7 10
No other number can go into both at the same time.
Therefore GCF is 4.
Answer:
The amount she started with $20
Step-by-step explanation:
Let the amount Ahmya started with = x
when she bought $10 shirt, the remaining money is = x - 10
she spent half of this remaining money on dinner = ![(\frac{x- 10}{2} )](https://tex.z-dn.net/?f=%28%5Cfrac%7Bx-%2010%7D%7B2%7D%20%29)
amount left after this = ![(\frac{x- 10}{2} )](https://tex.z-dn.net/?f=%28%5Cfrac%7Bx-%2010%7D%7B2%7D%20%29)
she further spent $4 on cofee, the remaining money =
- 4
she also spent 1/4 of remaining money on souveniers = ![\frac{1}{4}(\frac{x-10}{2} - 4)](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%28%5Cfrac%7Bx-10%7D%7B2%7D%20%20-%204%29)
amount left = ![\frac{3}{4}(\frac{x-10}{2} - 4)](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D%28%5Cfrac%7Bx-10%7D%7B2%7D%20%20-%204%29)
The two last fractions should sum up to 1;
![\frac{1}{4}(\frac{x-10}{2} - 4) + \frac{3}{4}(\frac{x-10}{2} - 4) = 1\\\\\frac{x-10}{8} -1 + \frac{3x-30}{8} -3= 1\\\\\frac{x-10}{8} + \frac{3x-30}{8} = 1+3+1\\\\\frac{x-10}{8} + \frac{3x-30}{8} = 5\\\\\frac{x-10 +3x-30}{8} = 5\\\\\frac{4x-40}{8} =5\\\\4x-40 =40\\\\4x =80\\\\x = 20](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%28%5Cfrac%7Bx-10%7D%7B2%7D%20%20-%204%29%20%2B%20%5Cfrac%7B3%7D%7B4%7D%28%5Cfrac%7Bx-10%7D%7B2%7D%20%20-%204%29%20%3D%201%5C%5C%5C%5C%5Cfrac%7Bx-10%7D%7B8%7D%20-1%20%2B%20%5Cfrac%7B3x-30%7D%7B8%7D%20-3%3D%201%5C%5C%5C%5C%5Cfrac%7Bx-10%7D%7B8%7D%20%2B%20%5Cfrac%7B3x-30%7D%7B8%7D%20%3D%201%2B3%2B1%5C%5C%5C%5C%5Cfrac%7Bx-10%7D%7B8%7D%20%2B%20%5Cfrac%7B3x-30%7D%7B8%7D%20%3D%20%205%5C%5C%5C%5C%5Cfrac%7Bx-10%20%2B3x-30%7D%7B8%7D%20%20%3D%205%5C%5C%5C%5C%5Cfrac%7B4x-40%7D%7B8%7D%20%3D5%5C%5C%5C%5C4x-40%20%3D40%5C%5C%5C%5C4x%20%3D80%5C%5C%5C%5Cx%20%3D%2020)
x = $20
Therefore, the amount she started with $20