Answer:
7.2 cm
Step-by-step explanation
The area of a rectangle is calculated by multiplying the width and the length together. Therefore:
13 multiplied by x = 93.6
x = 93.6 divided by 13
x= 7.2
Percent of Change:
Difference/Original
(20-16)/16 = 4/16 = 1/4 = 25% increase
Yuto is correct because he isolated the variable correctly and reversed the inequality symbol.
x < 3
Answer:
4.2
Step-by-step explanation:
5.7-1.5=4.2
Answer:
8
Step-by-step explanation:
100 = x^2 + AC^2
17^2 = AC^2 + (21 - x)^2
289 = AC^2 + 21^2 + x^2 - 2*21*x
289 =<u> AC^2</u> + 441 +<u> x^2</u> - 42x
from 1st equation AC^2 + x^2 = 100
289 = 441 + 100 - 42x
289 = 541 - 42x
42x = 541 - 289 = 252
x = 252/42 = 6
so AC^2 = 100 - 6^2 = 100 - 36 = 64
AC = 8
