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IgorC [24]
3 years ago
15

If x + 4y = 18 and x - 4y = 2, then x = ? My Answer:____

Mathematics
1 answer:
kupik [55]3 years ago
7 0

Answer:

Therefore x =5

Step-by-step explanation:

marke me as branalist answer

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Explain why 6:4 and 18:8 are not equivalent ratios
zavuch27 [327]

They are not equivalent because:

<em>6*3=18 </em>

but...

<em>4*3=12 <- </em>The ratio says "8" not "12"

If you don't get it just say and I'll explain it further. :)

Have an awesome day!

~Mschmindy



7 0
3 years ago
I need help with showing the work
Ilia_Sergeevich [38]
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7 0
3 years ago
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Write the quadratic equation whose roots are 3 and -1, and whose leading coefficient is 5.
Assoli18 [71]

Answer:

5x² - 10x - 15 = 0

Step-by-step explanation:

Given that the roots are x = 3 and x = - 1, then the factors are

(x - 3) and (x + 1) and the quadratic is the product of the factors, that is

f(x) = a(x - 3)(x + 1) ← a is a multiplier

Here a = 5, thus

f(x) = 5(x - 3)(x + 1) ← expand factors using FOIL

     = 5(x² - 2x - 3) ← distribute parenthesis by 5

     = 5x² - 10x - 15

Thus equation is

5x² - 10x - 15 = 0

6 0
3 years ago
The equation shows the relationship between x and y:
aliina [53]
The pattern of a linear function, is the following:

y  = mx + b

Where m is always the slope.

m in this case is -4, hence

The correct answer for your question is -4.
8 0
3 years ago
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Tom Harding is a proofreader. He is paid $0.23 for every page he proofs. What is Tom's total pay for a week in which he proofrea
natka813 [3]
Alrighty, what I was always taught was to start by writing out what you know from the question.

What I know:
-Tom is paid $0.23 for every page of proofs.
-He proofreads 1,992 pages.

In order to figure out how much money Tom has made, we need to multiply 0.23 by 1,992. Multiplying allows us to see the total amount of money made by proofreading x amount of pages - for every page he proofreads, he makes $0.23.
0.23×1992=458.16

Therefore, Tom made $458.16.

Hope this helps!

3 0
3 years ago
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