Justify each step for 2x-5=-20

Answers

Answer 1

Answer: 2x-5=-20
You'd add 5 to both sides because when you add 5 to -5, they cancel out, therefore making it the right step.
2x= -15
Divide both sides by 2 because your goal is to try to get x by itself. The opposite of multiplying 2 and x is dividing x by 2.
Final Answer: x= -7.5

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0.6x-0.3y=-1.5
0.04x-0.02y=-0.1

Answers

6x - 3y = -15; /* 2 => 12x - 6y = -30;
4x - 2y = -10; /*(-3) => -12x + 6y = 30
____________
=> 0 = 0 True, for every x and every y real numbers;

the solution is {(x, 2x + 5) / x∈R };

What is the time that is 9 hours and 40 minutes before 4:25am

Answers

6:45pm. because from 4 to 12 would be 4 hours then subtract 5 more hours leaves you at 7:25 pm. now subtract 45 from that which leaves you at 6:45 pm.

Variable p is 2 more than variable d. Variable p is also 1 less than variable d. Which pair of equations best models the relationship between p and d? p = d + 2
p = d – 1
p = d – 2
p = d + 1
d = 2p
d = 2p – 1
d = 2p
d = 2p + 1

Answers

If you would like to find a pair of equations that best models the relationship between p and d, you can do this using the following steps:

p is 2 more than d ... p = d + 2
p is 1 less than d ... p = d - 1

The correct result would be p = d + 2 and p = d - 1.

The pair of equations that models the relationship between p and d are expressed as: p = d + 2, and p = d - 1.

What is an Equation?

An equation is used to represent a situation using variables (letters) and figures.

"p is 2 more than d" can be expressed as: p = d + 2.

Also, we can represent the statement, "p is 1 less than d" as: p = d - 1.

Therefore, the pair of equations would be: p = d + 2, and p = d - 1.

Learn more about equations on:

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If RS = 12 and ST = 7, find RT. U

Answers

Answer:

Answer is 19

Step-by-step explanation:

Add 12 and 7 and you will get the Answer 19.

Hope this helps.

Guys I’ve got 15 minutes to answer all of them please help I’ve been busy with the rest of the problems help !!!!

Answers

Answer:

Step-by-step explanation:

yeah on the first on i got x= 54 but my brain is mush to do the rest sorry my dude

What single decimal multiplier would you use to increase by 4% followed by a 3% increase

Answers

Answer:

1.0712

Step-by-step explanation:

if you increase by 4%, it means you will have a new total of 104%. In decimals it is 1.04 (divide your percentage by 100) after that you do the same with the 3% increase. you'll have a new total of 103%. In decimals 1.03. If you want to know what single multiplier you can use, you need to multiply the both decimals. So you get 1.04 x 1.03 = 1.0712

hope this will help you, have a nice day!

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HOW CAN YOU MAKE 7,5,6,AND 3 EQUAL 75 USING PARENTHESIS.

Using the coordinates of two points (84, 80) and (74, 65), determine the slope of the line of best fit.a. The slope of the line is 1.5. b. The slope of the line is 15. c. The slope of the line is -10. d. The slope of the line is -15