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SSSSS [86.1K]
3 years ago
15

20% of what number is equal to 2/3 of 90?

Mathematics
1 answer:
blagie [28]3 years ago
7 0
Let the number be x, then

1/5 * x = 2/3 * 90

1/5 x =  60

x = 60 * 5  = 300 (answer)
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Which of the following equations is not equivalent to 5x-10=40 *
vredina [299]
10x=100 because tbh if you Calculate 5x-10=40 it’s give you your answer and go off of that.
7 0
3 years ago
What happens to a figure that is dilated by a factor of 13
USPshnik [31]

Answer: it gets smaller, 13 times smaller

Step-by-step explanation:

Size of the figure/13

7 0
2 years ago
PLEASE HELP 20 POINTS<br> solve the system of equations y=-5x-7 and -4x-3y=-1 by substitution.
Ainat [17]

Answer:

Solution: x = -2; y = 3 or (-2, 3)

Step-by-step explanation:

<u>Equation 1:</u>  y = -5x - 7  

<u>Equation 2:</u> -4x - 3y = -1

Substitute the value of y in Equation 1 into the Equation 2:

-4x - 3(-5x - 7)  = -1

-4x +15x + 21 = -1

Combine like terms:

11x + 21 =  - 1

Subtract 21 from both sides:

11x + 21 - 21 =  - 1 - 21

11x = -22

Divide both sides by 11 to solve for x:

11x/11 = -22/11

x = -2

Now that we have the value for x, substitute x = 2 into Equation 2 to solve for y:

-4x - 3y = -1

-4(-2) - 3y = -1

8 - 3y = -1

Subtract 8 from both sides:

8 - 8 - 3y = -1 - 8

-3y = -9

Divide both sides by -3 to solve for y:

-3y/-3 = -9/-3

y = 3

Therefore, the solution to the given systems of linear equations is:

x = -2; y = 3 or (-2, 3)

Please mark my answers as the Brainliest if you find this helpful :)

7 0
3 years ago
2(x+1) please do full steps and answer thank you i will give brainlist
alisha [4.7K]

Distribute the parentheses:

2(x + 1)

2 · x = 2x

2 · 1 = 2

2(x + 1) = 2x + 2

7 0
3 years ago
HELP PLEASE !!
mars1129 [50]

Answer:

They don’t

Step-by-step explanation:

They can be the same height but one can be wider than the other

5 0
3 years ago
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