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4 years ago

Need help and if you helped thanks

Mathematics

1 answer:

Marysya12 [62]4 years ago

3 0

Answer:

132

Step-by-step explanation:

36/(6+10)(66)

36/16(66)

2(66)

132

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vlada-n [284]

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15.243125

Step-by-step explanation:

we need to calculate how much would be the tax for 14.5$

so 14.5 * 5.125% = 0.743125

and then we will add that to 14.50

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3 years ago

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3 years ago

Geoffrey thinks that the sum of 5x2y3+6x+7y and 8y+4x3y2+2xis 9x2y3+8x+15y. Explain Geoffrey's error, and find the correct sum.

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3 years ago

A cylinder with a height of 8 cm has a volume of 2887 cm. What is the radius of the cylinder? (The volume of a

vesna_86 [32]

Answer:

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Step-by-step explanation:

Hope this helps

4 0

3 years ago

What is the difference in area covered by a single 3 inch windshield wiper operating with a central angle of 138 degrees compare

Elena-2011 [213]

Answer:

38.9 square inches.

Step-by-step explanation:

We are asked to find the difference in area covered by a single 3 inch windshield wiper operating with a central angle of 138 degrees compared to a pair of 5 inch wipers operating together each having a central angle of 114 degrees.

We will use area of sector formula to solve our given problem as:

$\text{Area of sector}=\frac{\theta}{360}\times \pi r^2$ , where, r represents radius and theta represents central angle.

Let us find area of sector with central angle 140 degree and radius 3 inch.

$\text{Area of sector}=\frac{138}{360}\times \pi (3)^2$

$\text{Area of sector}=\frac{138}{360}\times 9\pi$

$\text{Area of sector}=10.83849$

Now, we will find area of sector with central angle 114 degree and radius 5 inch and multiply by 2 as:

$\text{Area of sector}=2(\frac{114}{360}\times \pi (5)^2)$

$\text{Area of sector}=2(\frac{114}{360}\times 25\pi)$

$\text{Area of sector}=\frac{114}{360}\times 50\pi$

$\text{Area of sector}=49.74188$

Let us find difference of area as shown below:

$\text{Difference of areas}=49.74188-10.83849$

$\text{Difference of areas}=38.90339$

$\text{Difference of areas}\approx 38.9$

Therefore, the difference in area covered is approximately 38.9 square inches.

8 0

3 years ago