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2 years ago

Which expressions are greater than 250?

Mathematics

1 answer:

natka813 [3]2 years ago

3 0

Answer is in image, hope this helps

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Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2

andrezito [222]

Answer:

$3x+2y=315\\\\2x+4y=450$

is the system of equations representing the situation.

Step-by-step explanation:

Given:

Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2 haircuts and 4 hair dyes takes 450 minutes.

Now, to find the system of equations representing the situation.

Let the number of haircuts be $x.$

Let the number of hair dyes be $y.$

So, Alexandra can give 3 haircuts and 2 hair dyes in:

$3x+2y=315.$

Now, giving 2 haircuts and 4 hair dyes in:

$2x+4y=450.$

Therefore,

$3x+2y=315\\\\2x+4y=450$

is the system of equations representing the situation.

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3 years ago

RTS=90 RTX=____AND ____ ILL GIVE U A BRAINLEST

LuckyWell [14K]

Do you have a picture?

7 0

4 years ago

Which equation represents a direct variation? y = 2х y=x+4 y= 1/2x y=3/x

gayaneshka [121]

Answer:option 1 and option 2 represents a direct variation.

Step-by-step explanation:

A direct variation is one in which, as one variable increases in value, the other variable increases in value. Also as one variable decreases in value, the other variable decreases in value.

Looking at the options,

1) y = 2х

When x = 2, y = 2×2 = 4

When x = 3, y = 2×3 = 6

Therefore, y = 2x is a direct variation.

2) y=x+4

When x = 2, y = 2 + 4 = 6

When x = 3, y = 3 + 4 = 7

Therefore, y = x + 4 is a direct variation.

3) y= 1/2x

When x = 2, y = 1/2×2 = 1/4 = 0.25

When x = 3, y = 1/2×3 = 1/6 = 0.17

Therefore, y = 1/2x is not a direct variation.

4) y = 3/x

When x = 2, y = 3/2 = 1.5

When x = 3, y = 3/3 = 1

Therefore, y = 3/x is not a direct variation.

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3 years ago

Which postulate or theorem proves that these two triangles are congruent?

fiasKO [112]

The answer would be AAS (angle angle side) theorem

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4 years ago

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The gestation period of a donkey is about 365 days . About how many weeks is 365 days?

yanalaym [24]

There are about 52 weeks

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3 years ago

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