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3 years ago

Select all complex numbers 5-√9/4 1+√-3 4-3√-16 2-√12➗5 3+2√-9➗7 9√-7/5

Mathematics

1 answer:

garri49 [273]3 years ago

6 0

Answer:

5-√9/4

1+√-3

4-3√-16

Step-by-step explanation:

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Spell out the name of a planet with a 29-day year

Jet001 [13]

The answer would be mercury.

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3 years ago

Find the unknown value in proportion 2.3/6.7 = 4.6/x a)13.4 b)20.1 c)1.6 d)3.4

Dominik [7]

2.3/6.7 = 4.6/x

using cross products

2.3*x = 6.7 * 4.6

divide by 2.3

x = 6.7 * 4.6 / 2.3

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3 years ago

Sarah’s mom took 3 hours to clean, but when Sarah helped, it took them 2 hours to clean. How many hours will it take Sarah to cl

Aleonysh [2.5K]

Answer:

It takes them 1.875 hours.

Step-by-step explanation:

Here, the job is cleaning the house.

Mom does 1 job in 3 hours.

In 1 hour, mom does 1/3 of the job.

Dad does 1 job in 5 hours.

In 1 hour, dad does 1/5 of the job.

Mom and dad working together do the job in x hours.

In 1 hour, mom and dad together do 1/x of the job.

1/3 + 1/5 = 1/x

5/15 + 3/15 = 1/x

8/15 = 1/x

8x = 15

x = 15/8 = 1.875

Answer: It takes them 1.875 hours.

your welcome

6 0

2 years ago

Read 2 more answers

How do I do this question?

svetlana [45]

Answer:

<h2>3rd Option </h2>

Step-by-step explanation:

$\sqrt{8} + 3 \sqrt{2} + \sqrt{32}$

$= 2 \sqrt{2} + 3 \sqrt{2} + 4 \sqrt{2}$

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3 years ago

Can some please help me?? It’s do today also can you guys explain how to do it because it’s still More questions and I actually

Genrish500 [490]

Answer:

-3

Step-by-step explanation:

Slope of a line is "rise over run". Pick two points on the line. For example, (0,4) and (1,1). As we move from the first point to the second, we move down 3 units and right 1 unit. So the slope is -3/1 = -3.

Here's an algebraic approach. If the two points are (x₁, y₁) and (x₂, y₂), then the slope is:

m = (y₂ − y₁) / (x₂ − x₁)

Plugging in our two points:

m = (1 − 4) / (1 − 0)

m = -3

3 0

3 years ago