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nevsk [136]
3 years ago
12

2r=1/6 find the value of r.​

Mathematics
1 answer:
const2013 [10]3 years ago
3 0
1/12 you find it by dividing both sides by 2
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the length of a rectangle is 5 less than twice the width.if the perimeter of the rectangle is 146,find the area of the rectangle
raketka [301]

Answer:

The area of the rectangle is 1222 units²

Step-by-step explanation:

The formula of the perimeter of a rectangle is P = 2(L + W), where L is its length and W is its width

The formula of the area of a rectangle is A = L × W

∵ The length of a rectangle is 5 less than twice the width

- Assume that the width of the rectangle is x units and multiply

   x by 2 and subtract 5 from the product to find its length

∴ W = x

∴ L = 2x - 5

- Use the formula of the perimeter above to find its perimeter

∵ P = 2(2x - 5 + x)

∴ P = 2(3x - 5)

- Multiply the bracket by 2

∴ P = 6x - 10

∵ The perimeter of the rectangle is 146 units

∴ P = 146

- Equate the two expression of P

∴ 6x - 10 = 146

- Add 10 to both sides

∴ 6x = 156

- Divide both sides by 6

∴ x = 26

Substitute the value of x in W and L expressions

∴ W = 26 units

∴ L = 2(26) - 5 = 52 - 5

∴ L = 47 units

Now use the formula of the area to find the area of the rectangle

∵ A = 47 × 26

∴ A = 1222 units²

∴ The area of the rectangle is 1222 units²

7 0
3 years ago
Help ASAP!!!! Please , 15 points
Feliz [49]

Answer:

im probably wrong but i think it's C

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andre [41]

Answer:

True

Step-by-step explanation:

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B Given: m AB =m BC , m∠x=60°, m∠y=15° Find: m AC
MArishka [77]

Answer:

105

Step-by-step explanation:

because all the angles added up have to = 180

60+15=75

75-180=105

3 0
3 years ago
-8x + 10y + 16x - 2y<br> Simplify and show work
HACTEHA [7]

Answer:

8x+8y

Step-by-step explanation:

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