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natta225 [31]
3 years ago
12

Nadya solves the equation 4x-4=20. Her work is shown below.

Mathematics
2 answers:
Rama09 [41]3 years ago
6 0
4x-4=20
   +4 +4
4x=24
divide both sides by 4 
x=6
Stells [14]3 years ago
3 0
Step 2 she should add 4 not subtract
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Y= 3x+7<br> y = -2x - 3<br> Whats the x and y for the solution
Tanzania [10]

Answer:

x=-2, y=1

Step-by-step explanation:

y=3x+7

y=-2x+3

Set the two equations equal to each other:

3x+7=-2x-3

Add 2x to both sides:

5x+7=-3

Subtract 7 from both sides:

5x=-10

Divide both sides by 5:

x=-2

Plug back into one of the original equations to find y:

y=3(-2)+7=-15+7=1

Hope this helps!

8 0
3 years ago
Solve the system of equations : y = x/2 , y = -x - 3 . You can use any method you wish for solving systems of equations. Check y
lorasvet [3.4K]

Answer:

x=−2 and y=−1

Step-by-step explanation:

<u>Problem:</u>

Solve y=x2;y=−x−3

<u>Steps:</u>

I will solve your system by substitution.

y=1/2x;y=−x−3

Step: Solve y= 1/2x for y:

Step: Substitute 1/2 x for y in y=−x−3:

y=−x−3

1/2x= =−x−3

1/2x+x=−x−3+x(Add x to both sides)

3/2x = -3

3/2x/3/2 = -3/3/2 (Divide both sides by 3/2)

x=−2

Step: Substitute −2 for x in y=1/2x:

y=1/2x

y=1/2(-2)

y=−1(Simplify both sides of the equation)

<u>Answer:</u>

x=−2 and y=−1

5 0
2 years ago
25x25 in exponential form
Alexxandr [17]
25 to the 2 or 25^2

Explanation:
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2 years ago
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erica [24]

it would be convenient if you actually give us the equation

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3 years ago
Need to know the answer to the problem
Delicious77 [7]
The answer would be 2/5
4 0
3 years ago
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