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Zina [86]
3 years ago
14

How do you simplify (-4i)(7i)?

Mathematics
2 answers:
8090 [49]3 years ago
5 0

\bf (-4i)(7i)\implies -28i^2\implies \stackrel{\textit{recall that }i^2 = -1}{-28(-1)}\implies 28

xxTIMURxx [149]3 years ago
4 0

For this case we must simplify the following expression:

(-4i) (7i)

We have to by definition that:

- * + = -\\- * - = +\\i ^ 2 = -1

So:

-4i * 7i = -28i ^ 2 = -28 (-1) = 28

Finally we have that the expression is equivalent to:

(-4i) (7i) = 28

Answer:

(-4i) (7i) = 28

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Which factors are considered when deciding how to make goods and services? Check all that apply.
tangare [24]

Answer: Factors considered when deciding how to make goods and services are land, labor and capital.

Explanation:

In an economy, to make any goods and services in a better way we need three things - land, labor and capital.

Land is required to set up the ground where desired operations can be done which will result in goods. For providing a service also, we need land were one is supposed to set up the unit with all things required to give a service.

Labor is indeed the manpower which performs all activities related with making of goods and services. Lobor should be skilled and well educated in their respective field to perform assigned task upto the mark.

Capital, no doubt most important, is the money. For supporting any job, there is need to money. There should be enough capital to support the financial budget required to get a job done.

7 0
4 years ago
A company needs 713 slices of pizza for a company party. If each pizza is cut into 8 slices, about how many whole pizzas should
alukav5142 [94]

Answer:

D

Step-by-step explanation:

To find the number of WHOLE pizzas needed, we need to divide the total number of slices needed (713) by 8 slices. Thus

\frac{713}{8}=89.125

<em>because we can't order fractional pizza, we need to round up. So we will need 90 pizzas.</em>

<em>Correct answer is D.</em>

3 0
3 years ago
¿Cuál es el máximo común divisor de 160 y 96?
agasfer [191]

Answer:

32

Step-by-step explanation:

The factors of 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96

The factors of 160 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160

Then the greatest common factor is 32.

Hope this helps!

7 0
3 years ago
(20m + 3) - (7 m - 5)<br> Find the difference
DedPeter [7]
20m-7m= 13m
3--5=8
13m+8
8 0
3 years ago
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gregori [183]
A, because there are 52 fish fewer --> All the fish - 52 --> f-52
In July there are 63 fish -->   f-52 = 63

6 0
4 years ago
Read 2 more answers
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