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3 years ago

-7x+4y=24, 4x-4y=0 substitution

1 answer:

8 0

The first one: -7(x) + 4(y) = 24
The second one: 4(x) - 4(y) = 0

4y - 7x = 24 which is reduced to a negative
(-4y + 4x = 0 )

4(x) = 4(y)

-7(y ) + 4(y) = 24
- 3(y) = 24

3(y) = - 24

y-intercept: - 8
x-intercept: -8

The X & Y intercept is: -8, -8

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Seven added to double a number

valentinak56 [21]

<h3>Correct Question :</h3>

Express in arithmetic :

Seven added to double a number.

<h3>Solution :</h3>

Let the unknown be x.

Then, double of the number = 2x.

Atq,

2x+7

Hence,seven added to double a number = 2x+7

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4 years ago

What word expression matches 3+(4×12)

AnnyKZ [126]

The Word Expression Would Be:

<em><u>Four times twelve plus three</u></em>

Any Additional Questions? Comment Below!

<em><u>-AnonymousGiantsFan</u></em>

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3 years ago

Amanda rented a bike from Ted's Bikes. It costs $9 for the helmet plus $3.75 per hour. If Amanda paid about $40.88, how many hou

loris [4]

Answer:

≈8.5 hrs

Step-by-step explanation:

find the equation h would equal to 3.75

$3.75h+9= 40.88$

Next subtract 9 out from both side of the equation

$3.75h+9 -9= 40.88-9$

$3.75h= 31.88$

Divide 3.75 out of both sides of the equation

$\frac{3.75h= 31.88}{3.75}$

$h=8.50133$

Round to the nearest tenth

≈ $8.5$

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2 years ago

at a certain fast-food restaurant, the volume of a large soda is 35% greater than the volume of a small soda. if the volume of t

Dmitrij [34]

Answer:

the answer is 202.5 ml

Step-by-step explanation:

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3 years ago

Which of the following statements describes the absolute value of a number "a"?

Softa [21]

This is a tricky question as for me. But I think, I'd go with <span>C) The distance from the number "a" to 0 on a number line can be represented by the absolute value of a number "a." As it's sounds better in practical way.</span>

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4 years ago