Z=15+2(x+y) solve for x

Answers

Answer 1
Answer: Z=15+2(x+y) 
Use distributive property
Z= 15 + 2x + 2y
Subtract 2y from both sides
Z - 2y= 15 + 2x
Subtract 15 from both sides
Z - 2y - 15= 2x
Divide 2 on both sides
Final Answer: Z - 2y - 15(All over 2)= x
Answer 2
Answer: z=15+2x+2y
0=15+2x+2y-15
-2x=15+2y-15
x= -(15)/(2) - y +  (15)/(2)

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Write 2 equivalent ratios for each ratio given:
2/7
3:3 1/2

2.5 to 6

Answers

Answer:

2/7 = 4/14

3:3 = 6:6

1/2 = 2/4

2.5:6 = 5:12

Step-by-step explanation:

For the first one, we can multiply the numerator and denominator of the fraction by 2 to get an equivalent fraction which is 4/14

For the second one we can multiply each side by 2 to get the ratio of 6:6

For the third one we can multiply the numerator and denominator by 2 to get 2/4

For the last one we can multiply each side by 2 to get 5:12

What is the least common denominator of the equation StartFraction 2 Over 9 EndFraction x + two-thirds x = 7?

Answers

Answer:

the answer is b

Step-by-step explanation:

Answer: b

Step-by-step explanation:

Solve: x^2 – 16x + 63 < 0 ​

Answers

Answer:

7 < x < 9

Step-by-step explanation:

x^2 – 16x + 63 < 0

this is a parabola that opens up.

The parabola will be < 0 for values between the roots.

to picture this see the graph below.

Factor

(x - 7)(x - 9) < 0

Roots

x = {7, 9}

solution

7 < x < 9

Why is the following an equation? 4(52 − 1) = 96 A. It contains a variable. B. It contains parentheses. C. It contains more than one operation. D. It contains an equals sign.

Answers

Answer:

C.

Step-by-step explanation:

What is 6 8th plus 7 8th​

Answers

Answer:

13/8

Step-by-step explanation

Since the denominator is the same, you keep it. Then you just add 6 and 7 which is 13.

Do these ordered pairs represent a function? {(4,1), (5,2), (8,2), (9,8)} *

Answers

Answer:

Yes

Step-by-step explanation:

A function is a set of ordered pairs in which each x-element has only ONE y-element associated with it, but while it may NOT have two y-values assigned to the same x-value, it may have two x-values assigned to the same y-value.

The points (5,2) and (8,2) have the same y value, but their x values are different.  It is a function (there are no values of x for which we have more than one value of y).