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Dvinal [7]
3 years ago
9

Need help don’t know what to do I’m confused

Mathematics
2 answers:
umka21 [38]3 years ago
5 0

Answer:B

Step-by-step explanation:

Not sure but the math came out like that.

mr Goodwill [35]3 years ago
3 0

Answer: Second one

Step-by-step explanation:

a(b-c)=d

Solving for c

ab-ac=d

ab=d+ac

ab-d=ac

ab-d/a=c

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Help! Which choice is the most efficient first step to solve this set of equations?
Dmitry [639]

Answer:

Substitute 3x - 5 for y in the second equation.

Step-by-step explanation:

Generally, to solve the system of linear equations of x and y, the first step would be trying to eliminate x (or y).

Then turn the system into the equation of only y (or x).

Next, try to solve for y (or x).

Then substitute the solved y (or x) into the original system to work out x (or y).

**********

3 options (1 addition, 2 subtractions) do not eliminate x or y (x and y still exist after manipulation).

=> Remaining option relating substitution would be a reasonable choice.

5 0
3 years ago
A computer is 40% off if the original price. After the discount the tax is $44.64. What was the original price
amm1812
The original price was $62.50
6 0
3 years ago
Read 2 more answers
Given: -3(2x + 7) = -29 – 4x; Prove: x = 4
sergey [27]

Answer:

See steps below

Step-by-step explanation:

-3(2x+7)=-29-4x

Use the distributive property

-6x-21=-29-4x

Add 21 to each side

-6x=-8-4x

Add 4x to both sides

-2x=-8

Divide by -2

x=4

8 0
3 years ago
Is (5, 8) a solution to this system of inequalities?<br><br> x + y ≤ 18<br> x ≥ 6
Alecsey [184]

Answer:

No

Step-by-step explanation:

x + y ≤ 18

x ≥ 6

(5,8)

The second inequality states that x must be greater than or equal to 6, but x =5 so it is not a solution

5 0
3 years ago
The width of kevin's yard is three times the width of his garage, increased by 12 feet. What expression describes the width of k
Hitman42 [59]

Answer:

The expression that describes the width of Kevin’s yard is (3g + 12) feet

Step-by-step explanation:

This is an expression problem.

From the question, we are made to know that the width of the yard is 3 times the width of the garage increased by 12 feet.

Now, we are told that the width of the garage is g feet and we want to find the width of the yard.

The width of the yard will be g feet * 3 + 12

Mathematically that would be 3g + 12 feet

4 0
3 years ago
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