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Doss [256]
3 years ago
11

Sasha works at a greenhouse during the summer . She has to wrap mum plants with colored foil . There are 130 rows with 40 mums i

n each row. Each mum must be wrapped in one sheet of foil before it can leave the greenhouse. Colored foil comes in boxes of 250 sheets and costs $34.25 per package . What is the total cost to wrap all the mums? Show your work.
Mathematics
1 answer:
igomit [66]3 years ago
7 0

the answer is 5,200 right

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Which will result in a difference of squares?
otez555 [7]

Expanding the given expressions using Foil:

1)(–7x + 4)(–7x + 4) =7x^{2}-28x-28x+16=49x^{2}-56x+16

2) (–7x + 4)(4 – 7x)=-28x+49x^{2}+16-28x=49x^{2}-56x+16.

3)(–7x + 4)(–7x – 4)=49x^{2}+28x-28x-16=49x^{2}-16.

4)(–7x + 4)(7x – 4)=49x^{2}+28x+28x-16=49x^{2}+56x-16.

The third option that is (–7x + 4)(–7x – 4) is difference of two squares.

5 0
3 years ago
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How do you factor 14xy + 21x
jek_recluse [69]

Answer:

7x(2y+3)

Step-by-step explanation:

5 0
3 years ago
PLS HELP ASAP PLSSS IT DETECTS IF ITS RIGHT OR WRONG HELPPP
timurjin [86]

Answer:

y= 250 - 2x

Step-by-step explanation:

She spends $2 per bottle, which is my it's 2x.

She has a total of 250, and she spends $2 per bottle, so you subtract 2x from 250, which leaves the equation at y = 250 - 2x

3 0
3 years ago
For what value(s) of k is the linear system consistent? (Enter your answers as a comma-separated list.)
AleksAgata [21]

Answer:

Step-by-step explanation:

Given

6x_1-9x_2=8

9x_1+kx_2=-1

The given system is AX=B can be represented by

\begin{bmatrix}6 &-9 \\ 9 & k\end{bmatrix}\begin{bmatrix}x_1\\ x_2\end{bmatrix}=\begin{bmatrix}8\\ -1\end{bmatrix}

The given system is consistent when determinant of A is not equal to zero

|A|

|A|=6k-(-81)=6k+81

k\neq \frac{-27}{2}

i.e. system is consistent for all value of k except k=\frac{-27}{2}

R-\frac{-27}{2}

                 

4 0
3 years ago
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Why do you change the sign when subtracting a negative number?
natulia [17]
This is because minus times minus is equals plus so the sign must change

5 0
3 years ago
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