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2 years ago

I Do not know what to do ANYONE help plz

Mathematics

1 answer:

Fudgin [204]2 years ago

8 0

Answer:

for circle in circle: 75π

circle in square: 64-16π

note that answers are in exact form, since I don't know how the answer should be written (exact or decimal etc.)

Step-by-step explanation:

for circle in circle, we see that smaller circle (white circle) has radius 5 and big circle has radius 10. therefore we can find area of shaded area by doing

area of big - area of small

10²π - 5²π = 100π - 25π = 75π

circle in square, applying the same method, we can do square-circle

since the circle is inscribed in the square, the circle's diameter is 8, so its radius is 4

8²-4²π = 64-16π

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the area of 4 walls and ceiling of a room is 107 metre per square. if the room is 6m long and 5m wide, how high is the room?

lawyer [7]

Area of ceiling: 6 x 5 = 30 square meters:

Area of 4 walls = 107 - 30 = 77 square meters

2 walls = 6 + 6 = 12 meters long

2 walls = 5 + 5 = 10 meters long

12 + 10 = 22

77 square meters / 22 meters = 3.5 meters

The walls are 3.5 meters high.

7 0

2 years ago

Which statement is correct?

Alenkinab [10]

Answer:

The domain of the graph is all real numbers less than or equal to 0.

Hope this helps! :D

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2 years ago

Solve s=πr^2+πrl for l

NemiM [27]

Start with

$S = \pi r^2 + \pi r l$

Subtract $\pi r^2$ from both sides:

$S - \pi r^2=\pi r l$

Divide both sides by $\pi r$

$\dfrac{S-\pi r^2}{\pi r}=l$

And thus we solved the expression for l:

$l=\dfrac{S-\pi r^2}{\pi r}$

5 0

2 years ago

Employment data at a large company reveal that 74% of the workers are married, 42% are college graduates, and that 56% are marri

ValentinkaMS [17]

Answer:

(E) None of these above are true.

Step-by-step explanation:

Married = 74% or 0.74

College graduates = 42% or 0.42

pr(married | college graduates) = 0.56

(A) These events are pairwise disjoint. This is false. Pairwise disjoint are also known as mutually exclusive events. Here we can see that both events are occurring at same time.

(B) These events are independent events. This is also false.

(D) A worker is either married or a college graduate always. False

Here Probability(A or B) shall be 1

= Pr(A) + Pr(B) - Pr( A and B) = 0.74 + 0.42 - 0.56 * 0.42 = 0.9248

This is not equal to 1.

(E) None of these above are true. This is true.

8 0

3 years ago

Consider the following dot plots.

motikmotik

The correct answer is:

A) The medians are both between 10 and 14 emails.

Explanation:

The mode is the easiest measure to find of a data set.
The mode of a data set is the data value that appears the most often. In plot A, there are 3 dots at 10 and 3 dots at 15; this means the modes are 10 and 15.

In plot B, there are 3 dots at 5 and 3 dots at 15; this means the modes are 5 and 15.

They do not have the same modes.

The median of a data set is the middle value. There are 10 dots in each dot plot; this means the medians will each be between two data points.

For plot A, we can see that the middle value is between 10 and 15.
For plot B, we can see that the middle value is between 10 and 15.

This means that choice A is correct, the medians of both are between 10 and 14.

8 0

3 years ago