Amp is the number in front of sine so its 1/2 aka D :)
Answer:
Step-by-step explanation:
r²+8r=−7
Step 1: Subtract -7 from both sides.
r²+8r−(−7)=−7−(−7)
r²+8r+7=0
Step 2: Use quadratic formula with a=1, b=8, c=7.
r=

Answer:
40
Step-by-step explanation:
a^2+b^2=c^2
Answer:
Yuhh the answers c dawhggg trus me i just did the same thing lawl!
Step-by-step explanation:
Answer:
-17/18
Step-by-step explanation:
find least common multiple, which is 18
multiply the numerators by the number you multiplied on the denominator.
and subtract.