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3 years ago

Find the area of the shaded sector. Leave your answers in terms of pi. \pi

Mathematics

2 answers:

Alchen [17]3 years ago

8 0

Answer:

Option d is correct answer.

Step-by-step explanation:

Given in the picture is a circle with a sector quadrant circle.

WE have the formula for the sector of a circle

If angle of the sector is x

then we have

area of the sector = $\frac{x}{360} (\pi r^2)$

Here x=central angle = 90 and r = radius = 8

Substitute to get

$\frac{90}{360} (\pi )(8^{2} )\\=16\pi$

Sergeu [11.5K]3 years ago

7 0

The correct answer is A
Hope i helped

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Is there a way to find all the factor pairs for a big number like 805 quickly

Mars2501 [29]

Answer:

The complete list of factors for 805 are 1, 5, 7, 23, 35, 115, 161, and 805.

Step-by-step explanation:

A factor pair is a combination of two factors which can be multiplied together to equal 805. In proper math terms, the number 805 is called the product and the two numbers that can be multiplied together to equal it are called the factors.

In order to work out the factor pairs of 805 we need to first get all of the factors of 805. Once you have the list of all those factors we can pair them together to list out all of the factor pairs.

The complete list of factors for 805 are 1, 5, 7, 23, 35, 115, 161, and 805.

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2 years ago

1. The most massive planet in the solar system, Jupiter, has a mass of about 1,898,000,000,000,000,000,000,000,000 kg. Estimate

UNO [17]

Answer:

D. $2*10^{27} kg$

Step-by-step explanation:

Mass of Jupiter is given as 1,898,000,000,000,000,000,000,000,000 kg

Estimating this to the nearest whole number would be = 2,000,000,000,000,000,000,000,000,000 kg (rounding up the the "1,898")

To express this in scientific notation form, simply count how many zeros we have to the nearest whole number, 2.

We have 27 zeros there.

Therefore, we would multiply the whole number, 2, by 10 raise to the power of 27.

An estimate of the mass of Jupiter = $2*10^{27} kg$

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3 years ago

What goes up and down without moving? Whoever answers first gets brainliest.

pav-90 [236]

Answer: temperature and weight

Step-by-step explanation: Temperature can increase or decrease/can go up and down without moving. The same goes with weight, it can go up or down without moving.

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2 years ago

Tiffany's Furniture Store buys a table at a wholesale price of $103.00. If the markup rate at Tiffany's Furniture Store is 55%,

coldgirl [10]

If I am reading this right, the final total after adding the 55% markup rate should be $159.65.

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3 years ago

Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has a longer half life (in this

Firlakuza [10]

The amount of substance left of a radioactive element of half life, $t_{\frac{1}{2}}$ after a time, t, is given by:

$N(t)=N_0\left( \frac{1}{2} \right)^ \frac{t}{t_{ \frac{1}{2} }}$

Given that potassium-40 has a half life of approximately 1.25 billion years.

The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

$0.1=100\left( \frac{1}{2} \right)^ \frac{t}{1.25}} \\ \\ \Rightarrow\left( \frac{1}{2} \right)^ \frac{t}{1.25}}=0.001 \\ \\ \Rightarrow\frac{t}{1.25}\ln\left( \frac{1}{2} \right)=\ln(0.001) \\ \\ \Rightarrow \frac{t}{1.25}= \frac{\ln(0.001)}{\ln\left( \frac{1}{2} \right)} =9.966 \\ \\ t=9.966(1.25)=12.5$

Therefore, the maximum age of a fossil that we could date using 40k is 12.5 billion years.

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3 years ago