All categories

3 years ago

What is the answer to 2x + 3y=18 5x - 3y=3? Hurry pls.

Mathematics

2 answers:

tiny-mole [99]3 years ago

7 0

Answer: Solve for

$y= \frac{5x}{3} -1\\or \\y=-\frac{2x}{3} +6\\$

Step-by-step explanation:

Solve for X.

AURORKA [14]3 years ago

4 0

The person above me got the answer spot on (:

You might be interested in

Write an equation in point slope form for the line with a slope of 3 passes through (1,2)

alexgriva [62]

Answer:

$y-2=3(x-1)$

Step-by-step explanation:

The point-slope form of a line is given as:

$y-y_1=m(x-x_1)$

Where

m is the slope

$x_1$ is the x-coordinate of the point given (passing through the line)

$y_1$ is the y-coordinate of the point given (passing through the line)

Now,

Given,

Slope = m = 3

$x_1$ = 1

$y_1$ = 2

Now, we simply plug these into the formula for point-slope form of a line:

$y-y_1=m(x-x_1)\\y-2=3(x-1)$

This is the point-slope form.

4 0

3 years ago

A storage tank will have a circular base of radius r and a height of r. The tank can be either cylindrical or hemispherical (ha

Neko [114]

Answer:

Volume: $\frac{2}{3}\pi r^3$

Ratio: $\frac{2}{9}r$

Step-by-step explanation:

First of all, we need to find the volume of the hemispherical tank.

The volume of a sphere is given by:

$V=\frac{4}{3}\pi r^3$

where

r is the radius of the sphere

V is the volume

Here, we have a hemispherical tank: a hemisphere is exactly a sphere cut in a half, so its volume is half that of the sphere:

$V'=\frac{V}{2}=\frac{\frac{4}{3}\pi r^3}{2}=\frac{2}{3}\pi r^3$

Now we want to find the ratio between the volume of the hemisphere and its surface area.

The surface area of a sphere is

$A=4 \pi r^2$

For a hemisphere, the area of the curved part of the surface is therefore half of this value, so $2\pi r^2$ . Moreover, we have to add the surface of the base, which is $\pi r^2$ . So the total surface area of the hemispherical tank is

$A'=2\pi r^2 + \pi r^2 = 3 \pi r^2$

Therefore, the ratio betwen the volume and the surface area of the hemisphere is

$\frac{V'}{A'}=\frac{\frac{2}{3}\pi r^3}{3\pi r^2}=\frac{2}{9}r$

6 0

3 years ago

What is an example of the Associative Property of Addition?

otez555 [7]

Associative property
(3 + 9) + 6 = 3 + (9 + 6)

7 0

3 years ago

Read 2 more answers

Eli lives 3 3/4 miles from the library. He decided to bike from his home to the library to return some books. Eli biked 1 1/10 m

KIM [24]

Eli traveled a total of 8.6 miles. He went to the library and back. 3.75 + 3.75. and he also added and extra 1 1/10 mile. so, 3.75 x 2 = 7.5, 7.5 + 1 1/10 = 8.6. Hope that helped!

7 0

3 years ago

Read 2 more answers

How many oranges are in a crate if the price of a crate of oranges is $1.60 and the price of oranges is $0.20 per pound and ther

Shtirlitz [24]

Answer:

7 oranges

Step-by-step explanation: 3 oranges in a pound 0.20 cents per pound. 60 cents per pound add it up.

8 0

3 years ago