The answer is 4 and four-fifths.
Multiply the fraction by both things in the parenthesis.
Answer:
9 = x (assuming 15 is the hypotenuse)
Step-by-step explanation:
15^2 = 12^2 + x^2
225 = 144 + x^2
subtract 144 from both sides
81 = x^2
square root both sides
9 = x
Answer:
(a2+3a+9)(a2-3a+9)
Step-by-step explanation:
Answer:
the first one should be -548
Step-by-step explanation:
plug in the values and you should get -30+7(-72-2).
