3 years ago

2) Brian purchased pens for 75 cents each and pencils for 40 cents each he

Mathematics

1 answer:

svet-max [94.6K]3 years ago

8 0

Step-by-step explanation:

Name the total of pens purchased as x and the pencils as y... Make two equations and solve them. I also search for the pencils purchased in addition

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Can you please help that will be super kind of u to do that

mote1985 [20]

Answer:

Step-by-step explanation:

I think your supposed to just count the dots

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2 years ago

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Sean Orr’s gross power bill for July was $189.76. By paying early he earned a discount of $3.79. What was the net amount of his

USPshnik [31]

Sean’s power due to the discount will cost $186.10

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3 years ago

1) x² 2(x+y) - y^2 <br>2) x^4+ x^2y^2+ y^4

spin [16.1K]

Answer: 1) Let's simplify step-by-step.

x22(x+y)−y2

Distribute:

=(x22)(x)+(x22)(y)+−y2

=x23+x22y+−y2

Answer:

=x23+x22y−y2

2)Let's simplify step-by-step.

x4+x2y2+y4

There are no like terms.

Answer:

=x4+x2y2+y4

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3 years ago

What is a number that is greater than 5 and less than 40, is not divisible by 2, the sum of it's digits is 7 and has exactly 3 f

Doss [256]

Is odd between 5 and 40 is a square number and the digits add to 7.
all the square numbers between there are 9,16, 25, 36
It's not 9, 16 or 36 so it has to be 25

Hope this helps :)

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3 years ago

How to factor 4(x+5)^3(x-1)^2-(x+5)^4 • 2 (x-1) by grouping?

nata0808 [166]

$\bf 4(x+5)^3(x-1)^2-(x+5)^4\cdot 2(x-1)
\\\\\\
4(x+5)^3(x-1)^2-2(x-1)(x+5)^4
\\\\\\ \underline{2}\cdot 2\underline{(x+5)^3}(x-1)\underline{(x-1)}~-~\underline{2}\underline{(x-1)}(x+5)\underline{(x+5)^3}\leftarrow 
\begin{array}{llll}
notice~the\\
common\\ \underline{factors}
\end{array}
\\\\\\
2(x+5)^3(x-1)~[~2(x-1)-(x+5)~]
\\\\\\
2(x+5)^3(x-1)~[2x-2-x-5]\implies 2(x+5)^3(x-1)(x-7)$

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2 years ago