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3 years ago

10

PLEASE HELP I NEED ANSWER FAST

2 answers:

Debora [2.8K]3 years ago

6 0

The answer should be B

kogti [31]3 years ago

3 0

What is mc013-2.jpg? could you link to the image so we could make sure we know the answer

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Choose two lines whose slopes are inverses, for Example 3 and 1/3. Explain how they are alike, how they are different and which

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The line with a slope of 3 is steeper, they are alike because both are at a positive incline.

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3 years ago

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irina [24]

Answer:

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2. 5 to 8 or 5:8

Step-by-step explanation:

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3 years ago

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Noah wants to save $700 in 10 months. He thinks he can earn $11 interest. Why is it reasonable that he should save $69 a month?

konstantin123 [22]

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3 years ago

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..vertex: (4, -1)<br> f(3) = -6

s344n2d4d5 [400]

Answer:

$\huge\boxed{f(x)=-5(x-4)^2-1=-5x^2+40x-81}$

Step-by-step explanation:

The vertex form of an equation of a parabola:

$f(x)=a(x-h)^2+k$

$(h;\ k)$ - vertex

We have

vertex $(4;\ -1)\to h=4;\ k=-1$

$f(3)=-6$

Therefore we have:

$f(x)=a(x-4)^2+(-1)=a(x-4)^2-1$

Substitute $x=3$ and $f(3)=-6$

$a(3-4)^2-1=-6\qquad|\text{add 1 to both sides}\\\\a(-1)^2=-6+1\\\\a(1)=-5\\\\a=-5$

Finally:

$f(x)=-5(x-4)^2-1=-5(x^2-2(x)(4)+4^2)-1\\\\=-5(x^2-8x+16)-1=-5x^2+(-5)(-8x)+(-5)(16)-1\\\\=-5x^2+40x-80-1=-5x^2+40x-81$

4 0

4 years ago