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scoundrel [369]
3 years ago
5

1. Which of the following equations has a solution of x = -5? Equation A------> 16x-7=11x-32 Equation B------> -4x- 10=2x+

20 a. Equation A b. Equation B c. Both A and B d. Neither A nor B
Mathematics
1 answer:
Nitella [24]3 years ago
4 0

Answer:

C

Step-by-step explanation:

<u>Equation A</u>

16x - 7 = 11x - 32

(16x - 7) - 11x = (11x - 32) -11x

5x - 7 = -32

(5x - 7) + 7 = (-32) + 7

5x = -25

(5x)/5 = (-25)/5

x = -5

<u>Equation B</u>

-4x - 10 = 2x + 20

(-4x - 10) - 2x = (2x + 20) - 2x

-6x - 10 = 20

(-6x - 10) + 10 = (20) + 10

-6x = 30

(-6x)/-6 = (30)/-6

x = -5

Both Equation A and Equation B have a solution of -5.

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Simultaneously x-2y=0 40-y=14​
harkovskaia [24]

Answer:

x = 52, y = 26

Step-by-step explanation:

x - 2y = 0

40 - y = 14​

(40 - 40) - y = 14​ - 40

- y = -26

y = 26

x - 2(26) = 0

x - 52 = 0

x (- 52 + 52) = 0 + 52

x = 52

7 0
3 years ago
Helppp me out please :)))) i’ll mark as brainlist who ever gets it right :)
shepuryov [24]

Answer:

y=-6

Step-by-step explanation:

8 0
2 years ago
Fred completed 10 math problems this is 40% of the math problems he must do how many are left??
Maru [420]

Answer:

100%-40%=60%

10-4=6

he has 6 questions left


8 0
3 years ago
Jerry is paid $10.40 an hour for regular-time work. What is Jerry’s time and a half rate an hour? What is his double time pay ra
julia-pushkina [17]

Answer: Time and half---$15.60

Double time--$20.80

Step-by-step explanation:

TIME AND A HALF

$10.40/2= $5.20

$10.40 + $5.20=$15.60

DOUBLE TIME

$10.40 x 2 =$20.80

5 0
3 years ago
Guys, I really really need some help badly! I don't understand how to get the "GCF" aka greatest common factor. Can someone plea
Setler [38]

After I explain the procedure in full detail, you'll be able to generate
your own work.  Here it is.

To find the greatest common factor of two numbers:

1).  List all of the factors of the first number.

2).  List all of the factors of the second number.

3).  Scan both lists, and find factors that are on BOTH lists.
These are the COMMON factors.  Write them down in a short list.

4).  Scan the short list.  Find the biggest number on it.
That's the Greatest Common Factor.

OK, I'll go through the first one in your picture . . . 24  and  42 :

1). Factors of 24:  <em>1,  2,  3,</em>  4,<em>  6,</em>  8,  12,  24

2). Factors of 42:  <em>1,  2,  3,  6,</em>  7,  14,  21,  42

3). Short list:    <em>1, 2, 3, 6</em>

4). Biggest number on the short list:<em>  <u>6</u> </em>


5 0
3 years ago
Read 2 more answers
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