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f(x)=-1x^2-8x+33
x coordinate of vertex is -b/2a in the form ax^2+bx+c=y
a=-1
b=-8
-(-8)/2(-1)=8/-2=-4
plug back in to get y value
y=-(-4^2)-8(-4)+33
y=-16+32+33
y=49
y value is 49
Answer:
0.0000805
Step-by-step explanation:
8.05×10⁻⁵ = 8.05×0.00001 = 0.0000805
260/400=0.65
your answer will be 65%
<span>.58 is the answer, first u do the 3 part then mulitply that times 8 then divide by 8 :)</span>