I think its 9 because 5x+15=50 you subtract 15 from both sides and then divide.
Answer:
Pushdowns - Triceps
Bench Press - Pectorals
Machine Back Press - Shoulders
Leg raises - Abdonimals
Step-by-step explanation:
3 you’re welcome
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Answer:
12
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
a^2 + 9^2 = 15^2
a^2 +81 =225
Subtract 81 from each side
a^2 = 225-81
a^2 = 144
Take the square root of each side
sqrt(a^2) = sqrt(144)
a=12