Pythagorean Theorum since that is what you are trying to prove.
Answer:
7
Step-by-step explanation:
collect like terms
14=-a+3a
2a=14
dividing both sides
a=7
Answer:
$1260
Step-by-step explanation:
70/100 × $1800 = $1260
4(y - 7) = 2y - 38
4y - 28 = 2y - 38
4y - 2y = -38 + 28
2y = -10
y = -5
Answer:
312
Step-by-step explanation:
its easy
