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3 years ago

PLS Help me in question 34 and 35

Mathematics

1 answer:

attashe74 [19]3 years ago

3 0

34- 6, 12, 18, 24, 30, 36
35- 15, 30, 45, 60, 75, 90

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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

Need all answers for this.

nata0808 [166]

Answer:

Step-by-step explanation:

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2 years ago

I need help solving it

HACTEHA [7]

Answer: OPTION 3. -7

Step-by-step explanation:

Given

-52=-4x-5(-2x+2)

Distributive property (REMEMBER you need to change signs)

-52=-4x-5×(-2x)-5×2

-52=-4x+10x-10

Combine like terms (-4x and 10x)

-52=6x-10

Add 10 on both sides

-52+10=6x-10+10

-42=6x

Divide 6 on both sides

-42/6=6/6x

x=-7

Hope this helps!! :)

Please let me know if you have any question

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4 years ago

Read 2 more answers

Can you help me with this, please?

Aloiza [94]

Answer:

y =x-12

Step-by-step explanation:

$(x_1, y_1) = (16, 4) \ \ \ and \ \ \ (x_2, y_2) = (17, 5)$

Equation of straight line is

$y-y_1 =\frac{y_2-y_1}{x_2-x_1} (x-x_1)$

$y-4 =\frac{5-4}{17-16} (x-16)$

$y =(x-16)+4$

$y =x-12$

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3 years ago

Which phrase describes the decimal expansion of the following number?

miv72 [106K]

Answer:

Step-by-step explanation:

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