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amid [387]
2 years ago
11

Multiply and simplify the product. 2i(4 – 5i) select the product. –2i 2i –10 8i 10 8i

Mathematics
1 answer:
Crazy boy [7]2 years ago
4 0

The multiplication of the expressions 2i and (4 – 5i) is 10 + 8i. Then the correct option is D.

<h3>What is multiplication?</h3>

It is also known as the product. If the object n is given to m times then we just simply multiply them.

The expressions are 2i and (4 – 5i).

Then the product of the expression will be given as

2i (4 – 5i)

8i – 10i²

And we know that i² = -1

Then we have

8i – 10 (–1)

10 + 8i

More about the multiplication link is given below.

brainly.com/question/19943359

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Before being simplified, the instructions for computing income tax in Country R were to add 2 percent of one’s annual income to
Vedmedyk [2.9K]

Answer:

Option C)

50 + \dfrac{I}{40}          

Step-by-step explanation:

We are given the following in the question:

I is the annual income of a person in a country R

2 percent of one’s annual income =

\dfrac{2}{100}\times I = 0.02I

1 percent of one’s annual income =

\dfrac{1}{100}\times I = 0.01I

Average of  100 units of Country R’s currency and 1 percent of one’s annual income.

=\dfrac{0.01I + 100}{2}

Income tax =

2 percent of one’s annual income + Average of  100 units of Country R’s currency and 1 percent of one’s annual income.

= 0.02I + \dfrac{100+0.01I}{2}\\\\=50 + \dfrac{0.04I + 0.01I}{2}\\\\=50 + \dfrac{0.05I}{2}\\\\= 50 + \dfrac{I}{40}

Thus, income tax is given by

Option C)

50 + \dfrac{I}{40}

6 0
2 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Lunna [17]

Answer:

<u>3 days</u>, <u>27</u>

Step-by-step explanation:

After 3 days :

  • 3³ = 27 belts
  • 4(3) + 15 = 12 + 15 = 27 belts

After 3 days, the number of belts and wallets sold will be the same, equal to 27.

3 0
1 year ago
Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost $30 and same-day tickets cost
Tju [1.3M]

The advance tickets were 35 in number and the same day ticket will be 30 in number.

<h3>What will be the number of tickets?</h3>

To find out the number of the tickets sold we will give some notations so the notations are as follows:-

A= Cost of advance tickets=$30

S= cost of same-day ticket-=15

N_A= Number of the advance tickets

N_S=Number of same-day tickets.

The equations made by the given data will be:-

30N_A+15N_S=1500\\\\\\N_A+N_S=65

By solving the above equations:-

N_S=30\ \ \ \ \  \ N_A=35

Hence the advance tickets were 35 in number and the same day ticket will be 30 in number.

To know more about linear equations follow

brainly.com/question/14323743

#SPJ1

7 0
2 years ago
A motorcycle weighs 500 pounds.<br> How many tons does the motorcycle weigh?
nexus9112 [7]

Answer:0.25 tons

Step-by-step explanation:

I looked it up on the internet

5 0
2 years ago
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Rhonda has $315 in her saving account. She wants to save at least $585. Write and
Roman55 [17]

Answer:

0.53

Step-by-step explanation:

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