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ICE Princess25 [194]
3 years ago
9

Let x = 6. What is the value of the expression 5x2+x−7 ? Enter your answer in the box.

Mathematics
2 answers:
12345 [234]3 years ago
5 0
This would be 5(6)^2 + 6 - 7

=  180  + 6 - 7  = 179
lutik1710 [3]3 years ago
3 0
5x2+x-7

= 10+6-7
= 16-7
= 9

I hope this is what you're looking for :)
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Jose asks his friends to guess the higher of two grades he received on his math tests. He gives them two hints. The difference o
tatyana61 [14]

Answer : 96

x – y = 16 --------> equation 1

1/8 x + 1/2 y = 52

x is the higher grade and y is the lower grade

We solve the first equation for y

x - y = 16

-y = 16 -x ( divide each term by -1)

y = -16 + x

Now substitute y in second equation

1/8 x + 1/2 ( -16 + x ) = 52

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Take common denominator to combine fractions

1/8x + 4/8x -8 = 52

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Add 8 on both sides

5/8x = 60

Multiply both sides by 8/5

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96 is the higher grade of Jose’s two tests.

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3 years ago
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Answer:

She will be able to fill 9 shelves with 1 book left over.

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3 0
3 years ago
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kramer

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we know that

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