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Amiraneli [1.4K]
3 years ago
7

PLEASE PLEASE HELP!! Classify this system and determine the number of solutions.

Mathematics
1 answer:
3241004551 [841]3 years ago
3 0
This system of linear equation has infinite solutions because they are really the same equation.

12x + 3y = 21
3y = -12x + 21  Divide through by 3:-

y = -4x + 7  <-------- which is the first equation
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The base and height of a right triangle are 20 inches and 15 inches. Find the length of the hypotenuse.
Karolina [17]

Using the Pythagorean theorem:

Hypotenuse = sqrt( 20^2 + 15^2)

Hypotenuse = sqrt( 400 + 225)

Hypotenuse = sqrt(625)

Hypotenuse = 25

Answer: 25 inches

8 0
3 years ago
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Which algebraic expression is equivalent to the expression below? 9(2x - 6) A. 9x - 3 B. 18x - 54 C. 9x - 8
sergejj [24]

Answer:

B

Step-by-step explanation

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4 0
3 years ago
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The perimeter of a parallelogram must be no less than 40 feet. The length of the rectangle is 6 feet. What are the possible meas
tatuchka [14]

Answer: 14\ ft

Step-by-step explanation:

Given

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Suppose l and w be the length and width of the rectangle

\Rightarrow \text{Perimeter P=}2(l+w)\\\Rightarrow P\geq 40\\\Rightarrow 2(l+w)\geq40\\\Rightarrow l+w\geq20\\\Rightarrow w\geq20-6\\\Rightarrow w\geq14\ ft

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5 0
3 years ago
Solve for the variable: 12 = 5x = 7
IrinaVladis [17]

Hello from MrBillDoesMath!

Answer:  x = 1

Discussion :

Per the author, the equation to solve is  12 = 5x + 7

Isolate the "x" variable by subtracting 7 from both sides of the equation:

12 = 5x + 7

-7 =        -7

---------------------

12-7 = 5x + 0


or


5 = 5x

Dividing both sides by 5 gives x - 1


Regards, MrB

6 0
3 years ago
Find the surface area of a cylinder. Round your answer to the nearest tenth if necessary.
zhenek [66]

Answer:

I used a chip bottle and it was 3.5 inches

Step-by-step explanation:

I hope this helps sorry if its wrong

5 0
3 years ago
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