All categories

4 years ago

What is the solution to the following system of linear equations?

1 answer:

8 0

<span> x − 2y = −1 => x = 2y -1

2x + y = −12
2(2y - 1) + y = -12
4y - 2 + y = -12
5y = -10
y = -2
x = 2</span>·(-2) - 1
x = -4 - 1
x = -5

Answer <span>D (-5,-2)</span>

You might be interested in

Change 21/4 to a mixed number

8090 [49]

Answer:

$5\frac{1}{4}$

Step-by-step explanation:

Greatest multiplier of 4 that is less than 21 is 5 (4 x 5 = 20)

Put the remaining number as the numerator (21 - 20 = 1)

3 0

3 years ago

Marina sells candles that are in the shape of cones. she makes a yellow candle that has a diameter of 4 inches and a height of 1

Katena32 [7]

The correct statements are:

the volume of the yellow candle is about 46.05 inches cubed.
the radius of the yellow candle is 2 in
he base area of the yellow candle is about 6.28 inches squared.
the price of one yellow candle is about $16.12.

<h3>What are the correct statements?</h3>

Volume of a cone = 1/3(πr²h)

π = 3.14
r = radius = diameter / 2 = 4/2 = 2 inches
h = height

Volume of a cone = 1/3 x 2² x 11 x 3.14 = 46.05 inches cubed.

Base area = πr²

3.14 x 4 = 12.56 inches squared.

Price of one yellow candle = volume x price per cubic unit

46.05 x $0.35 = $16.12

To learn more about the volume of a cone, please check: brainly.com/question/13705125

#SPJ4

3 0

2 years ago

396 times 37. explain how you got your answer

lara [203]

Answer:

14652

Step-by-step explanation:

calculator

4 0

4 years ago

Trash Cans: Elliot's family has a cylinder shaped trash can. It takes the family a few days to fill the trash can up. Elliot wan

atroni [7]

Answer:

$4696.0 in.^3$

Step-by-step explanation:

The trash can has a cylinder shape, so we have to calculate the volume of a cylinder.

The volume of a cylinder is given by the formula

$V=\pi r^2 h$

where

V is the volume

r is the radius of the base

h is the height of the cylinder

In this problem, we have:

h = 24.90 in. is the height of the can

d = 15.50 in. is the diameter of the can, so the radius is half of this value:

$r=\frac{d}{2}=\frac{15.50}{2}=7.75 in.$

Therefore, the volume of the trash can is:

$V=\pi (7.75)^2 (24.90)=4696.0 in.^3$

5 0

3 years ago

If the factors of a quadratic function are (x + 2) and (x − 9), what are the x-intercepts of the function? A. (2,0) and (9,0) B.

Mumz [18]

Answer:

D. (-2,0) and (9,0)

Step-by-step explanation:

set the two factors equal to zero and find your two x values and those are the x intercepts. ( y value for x intercepts are always zero)

4 0

3 years ago

Read 2 more answers