4 years ago

What is 7/8 expressed as a percent? Enter your answer in the box.

Mathematics

1 answer:

ASHA 777 [7]4 years ago

7 0

The answer is 87.5% You can check it everywhere. :)

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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:

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

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3 years ago

Please help me! <br><br><br>ty :)

BlackZzzverrR [31]

Answer:

y-2 = 5(x-3)

Step-by-step explanation:

Hope that helps

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3 years ago

A teacher has an annual income of $55,125.

kow [346]

Answer:

A - 3307,50

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the answer to 27+5×6

Alenkasestr [34]

Refer to BIDMAS.
5*6=30
27+30=57
Your answer is 57.

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3 years ago

Please give accurate answer. I will give Brainliest. 20 points for answer.

solmaris [256]

You would travel 15 blocks

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3 years ago