2 years ago

A rectangular room measures 12 feet by 10 feet. How many square yards of carpet are needed?

Mathematics

1 answer:

Len [333]2 years ago

7 0

120 feet

To find area you need to follow the formula l • w, which is 12 x 10, that equals 120

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Solve the system of linear equations by ellmination. 5x + 9y = -11 3x + 9y = -3 A. (-4,-1) -B. (-1, –4) C. (-4,1) D. (1,-4)

valentina_108 [34]

Answer:

Step-by-step explanation:

5x + 9y = -11

3x + 9y = -3

5x + 9y = -11

-3x - 9y = 3

2x = -8

x = -4

-12 + 9y = -3

9y = 9

y = 1

(-4, 1)

Answer is C

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3 years ago

In my number the digit in the ones place is double the digit in the tens place. the sum of the digits is 3

jasenka [17]

The number is 21 because 2 is 1 doubled, and 2+1 is 3.

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Part F

wlad13 [49]

Answer:

the difference represents translations

Step-by-step explanation:

if you're talking about edmentum geometry unit 8, then the difference should be in how far apart each point is

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2 years ago

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stealth61 [152]

Answer:

351.86

Step-by-step explanation:

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3 years ago

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Which of the following correctly expresses sin (70) + sin(30) as a product?

JulsSmile [24]

Answer:

2sin50 cos20

Step-by-step explanation:

We need to write sin (70) + sin(30) as a product. The formula used here is :

$\sin A+\sin B=2\sin (\dfrac{A+B}{2})\cos(\dfrac{a-b}{2})$

Here, A = 70 and B = 30

So,

$\sin 70+\sin 30=2\sin (\dfrac{70+30}{2})\cos(\dfrac{70-30}{2})\\\\\sin 70+\sin 30=2\sin 50\cos20$

So, the value of sin (70) + sin(30) is 2sin50 cos20. Hence, the correct option is (c).

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3 years ago