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:
4th one its negative,linear association
Step-by-step explanation:
Answer:
6mm
Step-by-step explanation:
radius = 1/2 of diameter
Y=50+.05x
Just plug in the number of texts for x
y=50+.05(25)
y=51.25
^That was for 25 texts
Now just plug in all the other texts and replace that with x
Hope this helps!
Answer: The answer is -3 1/2 - 1/5
so it's C.
Step-by-step explanation: