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Flura [38]
3 years ago
9

Which phrase describes the algebraic expression StartFraction 7 over 8 EndFraction y minus 3?

Mathematics
2 answers:
klio [65]3 years ago
8 0

Answer:

a

Step-by-step explanation:

11111nata11111 [884]3 years ago
3 0

Answer:

seven-eighths of a number minus three

Step-by-step explanation:

the algebraic expression given to us is:

\frac{7}{8} y-3

we have seven-eighths multiplied by a number "y" (this can also be expressed as seven-eighths  of the number) and then, to that we substract 3 (minus three).

With this information we can conclude that the phrase that best describes this expression is:

seven-eighths of a number minus three

which is the first option.

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Step-by-step explanation:

The equations 8x + 4y = 32 and 16x + 12y = 72 represent the cost of lunch and dinner for a family in which x is the number of adults and y is the number of children.

We have to find the number of adults or the value of x by solving these equations.

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Now we will multiply equation 1 by 3 and subtract it by equation 2.

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Therefore, there are 3 adults in the family.

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