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choli [55]
3 years ago
12

Find the unknown. 531 = ( × 6) + 21

Mathematics
2 answers:
GrogVix [38]3 years ago
7 0
X=85 is your
answer.
sladkih [1.3K]3 years ago
3 0
The answer would be x = 85
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12 miles

Step-by-step explanation:

1/2 inch per 2 miles

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3 years ago
What expression could be used to determine the product of -4 and 3 1/4
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David bought 3 dvds and 4 books for $40 at a yard sale. Anna bought 1 dvd and 6 books for $18. How much did each dvd and book co
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Answer:

A book is worth $1 and a DVD is worth $12.

Step-by-step explanation:

The equations (2 unknowns and two equations, d is for a DVD and b is for a book):

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For Anna: d+6b=18

Now multiply the second equation with -3 and add to the first equation:

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−3d−18b=−54

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Now for DVD price, use the second equation:

d=18−6 or d=12 (means that each DVD  is worth $12).

A book is worth $1 and a DVD is worth $12.

8 0
3 years ago
Is it A? If not, why?
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Answer:

It's A 7^7

Step-by-step explanation:

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8 0
2 years ago
A student is trying to solve the system of two equations given below:
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Answer:

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3 years ago
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