All categories

2 years ago

Help anyone can help me do this question,I will mark brainlest.

Mathematics

1 answer:

balandron [24]2 years ago

5 0

Answer:

34 pi

Step-by-step explanation:

Use formula for circumference, 2 pi r

Find the circumference for both circles because both circles circumference are included in the shaded region

You might be interested in

Estimate and solve 4,624 ÷ 72 = ________. (2 points)<br> 66 r 22<br> 66 r 16<br> 64 r 22<br> 64 r 16

umka21 [38]

The answer is C. 64 r 22

8 0

2 years ago

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in. To the nearest tenth of a percent, wha

Vinil7 [7]

Answer

Find out the percent error in Annie's estimate .

To prove

Formula

$Percentage\ error = \frac{error\times 100}{exact\ value}$

As error = approx value - exact value

As given

Annie estimates that the height of a bookcase is 78.25 in.

The actual height is 75.50 in.

approx value = 78.25 in.

actual value = 75.50 in.

error = 78 .25 - 75 .50

= 2.75

put in the formula

$Percentage\ error = \frac{2.75\times 100}{75.50}$

$Percentage\ error = \frac{27500}{7550}$

Percentage error = 3.64 % (approx)

Therefore the Percentage error be 3.64 % (approx).

6 0

2 years ago

Read 2 more answers

Solve y (1/2)y+6=(3/4)y–4

iren [92.7K]

Answer:

Y = 40

Step-by-step explanation:

Change 1/2 to 2/4

2/4 y + 6 = 3/4y - 4

subtract 2/4y

6 = 1/4y -4

add 4

10 = 1/4y

multiply by 4 to get fraction to 1y or y

y = 40

8 0

2 years ago

Read 2 more answers

Find r(t) if r'(t) = 5t4i + 6t5j + t k and r(1) = i + j.

Vladimir [108]

$\mathbf r(t)=\displaystyle\int(5t^4\,\mathbf i+6t^5\,\mathbf j+t\,\mathbf k)\,\mathrm dt$
$\mathbf r(t)=(t^5+C_1)\,\mathbf i+(t^6+C_2)\,\mathbf j+\left(\dfrac12t^2+C_3\right)\,\mathbf k$

Given $\mathbf r(1)=\mathbf i+\mathbf j$ , we have

$\begin{cases}1^5+C_1=1\\\\1^6+C_2=1\\\\\dfrac121^2+C_3=0\end{cases}\implies C_1=0,C_2=0,C_3=-\dfrac12$

so that the particular solution is

$\mathbf r(t)=t^5\,\mathbf i+t^6\,\mathbf j+\dfrac12(t^2-1)\,\mathbf k$

8 0

2 years ago

Question 8 (1 point)

frosja888 [35]

Answer:

On April 30, 1789, George Washington, standing on the balcony of Federal Hall on Wall Street in New York, took his oath of office as the first President of the United States

5 0

1 year ago

Help anyone can help me do this question,I will mark brainlest.​

Help anyone can help me do this question,I will mark brainlest.