For
y=ax²+bx+c
the x value of the axis of symmetry is -b/(2a)
so test them
A., -b/(2a)=-(-8)/(2*-2)=8/-4=-2, yep
B. -b/(2a)=-2/(2*1/2)=-2/1=-2, yep
C. -b/(2a)=-(-16)/(2*4)=16/8=2, nope, need -2
D. -b/(2a)=-12/(2*3)=-12/6=-2, yep
answer is C
Answer:
Im only 12 i dont know
Step-by-step explanation:
The angle of 80 degrees is the same angle as the one with the equation. That equation has to equal 80 somehow.
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80 - 20 (from equation) = 60
60 ÷ 2 (also from equation) = 30
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x = 30 To make sure plug it in
(2 x 30)+ 20
60 + 20 = 80
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x should equal 30
Please correct me if wrong
Answer:
60%
Step-by-step explanation:
60% of 35 = 21
Answer:
4. 3169
5. 60
Step-by-step explanation:
4. To evaluate the value, you must substitute the variable with it’s given value.
12 - 3m +(8m)^2 = 12 - 3 x -7 + ( 8 x -7)^2 = 12 +21 + 3136 = 3169.
5. Let the number be y.
130/100 x y = 78
13y/10 = 78
13y = 780
y = 60.
Hope this helps