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gladu [14]
3 years ago
9

What’s the perimeter and area of 30ft and 18ft

Mathematics
1 answer:
kicyunya [14]3 years ago
4 0

Answer: 42 and 54

Step-by-step explanation:

18+18=36

3+3=6

36+6=42(Perimeter)

18x3=54(Area)

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Lisa [10]

Answer:

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Step-by-step explanation:

15,580.84 rounded to the nearest 10 thousand is 20,000

8 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
How do you write 5,920,178 in expanded form
Rina8888 [55]
Five million,Nine hundred and twenty thousand, One hundred seventy eight
7 0
3 years ago
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pantera1 [17]

Answer:

1.75

Step-by-step explanation:

0.009÷0.004-\frac{1}{2}=

2.25-0.5=

1.75

4 0
3 years ago
There are 87.4 calories in one serving of cherries. How many calories are in 3.85 servings? Enter your answer in the bo
Maru [420]

Answer:

336.49

Step-by-step explanation:

Multiply 87.4 times 3.85 to find your answer.

7 0
3 years ago
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