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3 years ago

Y=3x-7; (4,5) How do I work this equation to determine if it is a solution

Mathematics

1 answer:

marishachu [46]3 years ago

7 0

Answer: Yes, it is a solution

Step-by-step explanation:

So in the parenthesis, 4 is x and 5 is y, since x comes before the y. Plug the 4 in where the x is, and the 5 where the y is, and you should get 5= 12-7. 12-7 does equal 5, therefore it is a solution :)

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Answer:

0.13, 1.6, 2.2, 48.6, 49.2, 153.7

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4 years ago

What is 1/3 of 9/16?

mariarad [96]

of means times so you multiply the fractions

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3 years ago

Which ordered pairs are solutions to the inequality 2x+y>−4?

hichkok12 [17]

we will proceed to resolve each case to determine the solution

we have

$2x+y>-4$

$y>-2x-4$

we know that

If an ordered pair is the solution of the inequality, then it must satisfy the inequality.

case a) $(5,-12)$

Substitute the value of x and y in the inequality

$-12>-2*5-4$

$-12>-14$ ------> is True

therefore

the ordered pair $(5,-12)$ is a solution of the inequality

case b) $(-3,0)$

Substitute the value of x and y in the inequality

$0>-2*-3-4$

$0>2$ ------> is False

therefore

the ordered pair $(-3,0)$ is not a solution of the inequality

case c) $(-1,-1)$

Substitute the value of x and y in the inequality

$-1>-2*-1-4$

$-1>-2$ ------> is True

therefore

the ordered pair $(-1,-1)$ is a solution of the inequality

case d) $(0,1)$

Substitute the value of x and y in the inequality

$1>-2*0-4$

$1>-4$ ------> is True

therefore

the ordered pair $(0,1)$ is a solution of the inequality

case e) $(4,-12)$

Substitute the value of x and y in the inequality

$-12>-2*4-4$

$-12>-12$ ------> is False

therefore

the ordered pair $(4,-12)$ is not a solution of the inequality

Verify

using a graphing tool

see the attached figure

the solution is the shaded area above the line

The points A,C, and D lies on the shaded area, therefore the ordered pairs A,C, and D are solution of the inequality

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4 years ago

Read 2 more answers

2/8×7 <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B8%7D%20%20%5Ctimes%207" id="TexFormula1" title=" \frac{2}{8} \ti

trasher [3.6K]

Answer:

1 3/4

Step-by-step explanation:

2/8 * 7

2/8 will simplify

Divide the top and bottom by 2

12/8 = 1/4

1/4*7

7/4

We need to change this from an improper fraction to a mixed number

4 goes into 7 once with 3 left over

1 3/4

7 0

3 years ago