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3 years ago

How do you do multiplication and division?

Mathematics

2 answers:

cluponka [151]3 years ago

7 0

Answer:

See below.

Step-by-step explanation:

Multiplication:

x times 2

x times 2 would be x+x

Basically for each one number, you add the other one by. For example:

3 times 2 : 2+2+2 or 3+3

4 times 7: 4+4+4+4+4+4+4 or 7+7+7+7

Division:

x divided by 2

Division is how many groups of a number can you fit into the first one. For example:

4 divided by 2= Two groups of two can fit into four. (2+2)

6 divided by 3= Two groups of three can fit into six. (3+3)

You're Welcome!

Anarel [89]3 years ago

7 0

I provided a photo of how to multiply and divide

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Dovator [93]

Answer:

Slope- 4

Distance- 12.4

Midpoint- (6,8)

Step-by-step explanation:

Slope- $\frac{y2-y1}{x2-x1}$

$\frac{2-14}{4-7} =\frac{-12}{-3}=4$

Distance- $d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}$

$d = \sqrt{(4 - 7)^2 + (2-14)^2}$

$d = \sqrt{-3^2 + -12^2}$ $d = \sqrt{144+9}=\sqrt{153}$

$\sqrt{153} = 12.4$

Midpoint- $\frac{x1+x2}{2} ,\frac{y1+y2}{2}$

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3 years ago

The sum of two complex numbers, where the real numbers do not equal zero, results in a sum of 34i. Which statement must be true

Ipatiy [6.2K]

Answer:

The complex numbers have opposite real numbers.

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4 years ago

1. The mechanics at Lincoln Automotive are reborning a 6 in deep cylinder to fit a new piston. The machine they are using increa

Firdavs [7]

Answer:

$0.0239\frac{in^{3}}{min}$

Step-by-step explanation:

In order to solve this problem, we must start by drawing a diagram of the cylinder. (See attached picture)

This diagram will help us visualize the problem better.

So we start by determining what data we already know:

Height=6in

Diameter=3.8in

Radius = 1.9 in (because the radius is half the length of the diameter)

The problem also states that the radius will increase on thousandth of an inch every 3 minutes. We can find the velocity at which the radius is increasing with this data:

$r'=\frac{1/1000in}{3min}$

which yields:

$r'=\frac{1}{3000}\frac{in}{min}$

with this information we can start solving the problem.

First, the problem wants us to know how fast the volume is increasing, so in order to find that we need to start with the volume formula for a cylinder, which is:

$V=\pi r^{2}h$