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Lana71 [14]
3 years ago
9

The width of a rectangle is 8y- 1.5 feet and the length is 1.5y+9 feet. Find the perimeter of the rectangle.

Mathematics
1 answer:
lyudmila [28]3 years ago
6 0

Answer:

P=19y+15

Step-by-step explanation:

Step one:

Given data

dimension of the rectangle

Width = 8y-1.5

Length = 1.5y+9

Required

The expression to represents the Perimeter

Step two:

the perimeter of  a rectangle is expressed as

P= 2L+2W\\\\P=2(1.5y+9)+2(8y-1.5)\\\\P=3y+18+16y-3\\\\

collect like terms

P=3y+16y+18-3\\\\P=19y+15

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Someone help me understand how to do this
Wewaii [24]

Answer:

6.7 cm

Step-by-step explanation:

To make use of the Law of Sines for finding b, you need to know the missing angle B. Since the sum of the angles of a triangle is 180°, you can find angle B as ...

B = 180° -82° -55° = 43°

Now, you put the numbers you know into the formula given and solve for b.

sin(A)/a = sin(B)/b

sin(55°)/(8 cm) = sin(43°)/b

Cross multiplying gives ...

b·sin(55°) = (8 cm)·sin(43°)

and dividing by the coefficient of b gives you ...

b = (8 cm)·sin(43°)/sin(55°) ≈ 6.7 cm

4 0
3 years ago
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swat32

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2 years ago
50 - 5 to the second power divided by 5
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Hey!

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

Steps To Solve:

50 - 5² ÷ 5

~Solve for exponent

50 - 25 ÷ 5

~Divide

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

Answer: \Large\boxed{\mathsf{45}}

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Step-by-step explanation:

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McDonald's has about 210,000 managers and each makes an average 39,000 dollars per year. How much money does McDonald's spend on
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3 years ago
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