NO THOS IS NOT TRUESNBDJDN
Answer:
56
Step-by-step explanation:
z varies jointly with x and y:
z = kxy
When x = 2 and y = 2, z = 7.
7 = k(2)(2)
k = 7/4
z = 7/4 xy
When x = 4 and y = 8:
z = 7/4 (4)(8)
z = 56
Considering the perimeter (P)
![p = 2 \times b + 2 \times h](https://tex.z-dn.net/?f=p%20%3D%202%20%5Ctimes%20b%20%2B%202%20%5Ctimes%20h)
where b is the base and h is the height, then
![12 = 2 \times 4 \times 2 \times h \\ \\ h = \frac{12 - (2 \times 4)}{2} \\ \\ h = 2](https://tex.z-dn.net/?f=12%20%3D%202%20%5Ctimes%204%20%5Ctimes%202%20%5Ctimes%20h%20%5C%5C%20%20%5C%5C%20h%20%3D%20%20%5Cfrac%7B12%20-%20%282%20%5Ctimes%204%29%7D%7B2%7D%20%20%5C%5C%20%20%5C%5C%20h%20%3D%202)
Being the area (A)
its step 2 he did not subtract it right hope this helps and have a great day and get some sleep lol
Answer:
25% of 200 is 50
Step-by-step explanation
40% of a number is 80
.40 * n = 80
Divide each side by .4
.40 n/.4 = 80/.4
n = 200
The number is 200
Now lets find 25 percent of that number
.25 * 200 = 50