Answer:
2
Step-by-step explanation:
the constant does change
H is correct one!!
<u>By Pythagoras </u><u>theorem</u>
H² = B² + A²
H= 9
B= x
A = 3
<u>Now</u>
9² = 3² + x²
9² - 3² = x²
72 = x²
√72 = x
"Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week." because.
Let n be the number of aerobic and strength-training exercises per week.
Let x be the number of strength-training exercises per week on the beginner
15x + 20n = 90
Let y be the number of strength-training exercises for week on the advanced plan.
20y + 30n = 130
Multiply both sides by 1.5, to get:
22.5x + 30n = 135
Subtracting equation 2 from 3 we get:
22.5x - 20y = 5
Answer:
45
Step-by-step explanation:
using similar triangles
Let x be the boy's height
=
cross multiply to get 43.2x=1944
then divide by 43.2 both sides
to get x=45
Answer:
823543
Step-by-step explanation:
7 times 7 times 7 times 7 times 7 times 7 times 7 times 7 times = 823543
you have to multyply 7*7 8 times
