MATHEMATICS MIDDLE SCHOOL

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

Answers

Answer 1

Answer:

Answer:

10 + 8i.

Step-by-step explanation:

2i(4 – 5i) Distribute the 2i:

= 2i*4 + 2i * -5i

= 8i - 10i^2 Note i^2 = - 1 so we have:

8i - 10* -1

= 8i + 10

= 10 + 8i.

Related Questions

12 is what percent of 96 in an equation
The youth center has another mural painted inside the building. If the original painting is 3 feet by 2 feet ,and the mural is 15 feet by 10 feet, what is the scale comparing the painting to the mural ?
Show how to solve the promblem 378 times 6 using place value
A square has an area of 49 square feet. what is the perimeter of the square?
Alana and her friends decided to have a water fight on a hot summer day. They filled a bunch of water balloons and started the fight at 12:20 P.M. The water balloons lasted for 25 minutes. When all the water balloons were gone, they sprayed water with hoses for 55 minutes, until Alana's dad showed up with ice cream. What time was it when the water fight ended?

On June 8,1999, the national debt of the U.s.a was about $5,608,000,000,000.the population of the United states at the time was about 273,000,000.Suppose the national debt was divided evenly among everyone in the U.S,how much would each person owe ?

Answers

To figure out the answer, you must divide the debt by the population.

$(5,608,000,000,000)/(273,000,000) =20,542.12$

Each person would owe $20,542.12.

I need help asap pls and thank you

Answers

Answer:

Step-by-step explanation:

Using the hint given

1st term + common difference (desired term - 1)

(12) + (3) (20-1)

Two angles are complementary. The first angle is 2x degrees. The second angle is (x+30) degrees. Determine the larger angle

Answers

second angle is (x+30) value is 1718.873385

What are some numbers that equal pie

Answers

No number is equal π since it's a irrational number, but some that are close are 3.14, 3.141593, and $(22)/(7)$

As a decimal π = 3.141 159 265 36

The chart below shows the distribution of weeds in a yard.A circle graph titled Lawn weeds. The largest proportion is crab grass, then dandelion, then clover, then chickweed.

A lawn-care specialist chooses a random sample from the yard and determines the number of weeds in the sample. The results of the sample are shown in the table below.

Weed Type
Number
Dandelion
2
Clover
3
Crab Grass
2
Chickweed
2

Which explains whether or not this is a representative sample?
Yes, this is a representative sample because each type of weed is represented in the sample.
Yes, this is a representative sample because each type of weed is represented approximately the same number of times in the sample.
No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.
No, this is not a representative sample because each type of weed should be represented exactly the same number of times in the sample.

Answers

Answer:

Its c,No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.

Step-by-step explanation:

Answer:

Step-by-step explanation:

3/4 of Melissa's friends babysit for extra money. 2/3 of her friends babysit and pet sit. What fraction of those who babysit also pet sit?A) 1/2

B) 1/4

C) 12/17

D) 8/9