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Nimfa-mama [501]
3 years ago
9

2 • -1^3 - 3 • -1^2 +7

Mathematics
1 answer:
sertanlavr [38]3 years ago
3 0

Simplify 1^3 to 1

2 × -1 - 3 × -1^2 + 7

Simplify 1^2 to 1

2 × -1 - 3 × -1 + 7

Simplify 2 × -1 to -2

-2 - 3 × -1 + 7

Simplify 3 × -1 to -3

-2 - (-3) + 7

Simplify brackets

-2 + 3 + 7

Simplify

<u>8</u>

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Use the original price and the markup to find the retail price.
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Answer:

$45.15

Step-by-step explanation:

When you are dealing with questions with percents in them—like this one—you have to turn the percent into a decimal. To make 7.5% into a decimal, you move the decimal point 2 spaces to the left. So, 7.5% is also 0.075.

Now, we have to use this formula for these types of questions:

x + x(y)= the price with tax (or markup)

So, we can substitute the variables.

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Can someone help me? In this net, the two triangles are right triangles. All quadrilaterals are rectangles. What is its surface
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Answer:

Net Area = 168

Step-by-step explanation:

See attachment for complete question

I'll make reference to the attachment, when needed.

The shapes that make up the net are labelled 1 to 5.

So, to calculate the surface area of the net, we simply calculate the surface area of each label.

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So, the net area is the summation of the calculated areas of label 1 to 5

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Step-by-step explanation:

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