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3 years ago

Find the Nonpermissible replacement for y in this expression y-7/y+9

Mathematics

2 answers:

dsp733 years ago

6 0

Answer:

y cannot be -9

Step-by-step explanation:

The other word is discontinuity

It is what y cannot be

The denominator cannot be zero so

y+9 cannot be zero

y cannot be -9

Ierofanga [76]3 years ago

3 0

Y= -9 is the non permissible replacement for Y in this expression

Y+9/Y+7
If Y= -7
You cannot divide by 0. If Y= -7, the denominator would be 0.

Zero in the denominator is NOT allowed.

Y= -9 is the non permissible replacement for Y in this expression.

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Jake ate 55% of a cake. What fraction of the cake did he eat?

7nadin3 [17]

Answer:

11/20

Step-by-step explanation:

To be able to find the fraction of the cake that Jake ate if you know that he ate 55% of it, you have to turn the 55% into a fraction. To do this, first you have to divide the percent by 100:

55/100

Then, you have to simplify the fraction. In this case, you can do it by dividing by 5:

11/20

According to this, the fraction of the cake that Jake ate is 11/20.

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Triss [41]

Answer:

Step-by-step explanation:

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3 years ago

How do you graph y= -3x + 5

ZanzabumX [31]

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4 0

3 years ago

For his troops' popcorn fundraiser sale, Mike sold caramel corn for $10, buttered microwave popcorn for $8, and lightly buttered

Bad White [126]

$\bf \begin{cases}
c=\textit{caramel corn}\\
b=\textit{buttered microwave popcorn}\\
p=\textit{lightly buttered popcorn}
\end{cases}$

so... he sold 400 items, that means, whatever those quantities of c,b,p are, they add up to 400, thus

c+b+p = 400

now, the "c" sold for $10
the "b" sold for $8
and the "p" sold for $7

so, the amount of revenue on the "c" is 10 * c, or 10c
the revenue on "b" is 8*b or 8b
and the revenue on "p" is 7*p or 7p

whatever those amounts are, they ended up in $3,272
thus
10c + 8b + 7p = 3,272

now, he sold more lightly buttered, or "p", than just buttered corn or "b"
he actually sold twice as much, so whatever "b" is, "p" is twice that much
or
p = 2b

thus $\bf \begin{cases}
c+b+\boxed{p}=400\\\\
\boxed{p}=2b\qquad thus\\\\
c+b+\boxed{2b}=400\qquad or\\\\
c+3b=400\implies c=\underline{400-3b}\\
--------------\\
10c+8b+7p=3272\qquad or\\\\
10(\underline{400-3b})+8b+7(\boxed{2b})=3272
\end{cases}$

solve for "b", to see how many buttered microwave popcorn Mike sold

how many lightly buttered? well, p = 2b
how many caramel ones? well c = 400 - 3b

5 0

4 years ago