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mixas84 [53]
3 years ago
5

The name of the compound kf is..... a. sodium chloride b. potassium fluoride

Mathematics
1 answer:
tresset_1 [31]3 years ago
8 0
B. Potassium Fluoride
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Given the function f(x) = The quantity of 2x minus 5, divided by 3 , which of the below expressions is correct? (1 point) f−1(x)
Anuta_ua [19.1K]

Answer:

f^{-1}(x)=the quantity of 3x plus 5 divided by 2

Step-by-step explanation:

We are given that a function f(x)=\frac{2x-5}{3}

We have to find the correct expression

Suppose y=\frac{2x-5}{3}

3y=2x-5

3y+5=2x

x=\frac{3y+5}{2}

Therefore, f^{-1}(x)=\frac{3x+5}{2}

Answer:f^{-1}(x)=the quantity of 3x plus 5 divided by 2

8 0
3 years ago
14. A satellite orbits 22, 300 miles above the equator. It completes one revolution in 24 hours. Assume that the radius of the E
quester [9]

Answer:

Displacement = 0 mi

Distance = 164,996.45 mi

Step-by-step explanation:

In this case, the displacement will be zero because the satellite goes back to its starting point after one day. If there is no distance traveled between the starting point and the ending point, then the Displacement will be zero.

When it comes to the distance, we will need to calculate the perimeter of the circle the satellite describes when making one whole turn around the earth.

The perimeter of a circle is given by the equation:

p=2\pi r

so we need to start by finding what the radius of the circle is. This radius if found by adding the radius of the earth and the distance above the equation the satellite is located at, so we get that:

r=r_{earth}+h

where h is the height of the satellite, so the radius of the circle is:

r=22,300mi + 3,960 mi

so

r=26,260 mi

so now we can use the perimeter equation to get:

p=2\pi r

p=2\pi (26,260)

So the distance traveled by the satellite in one day will be:

P=164,996.45 mi.

7 0
2 years ago
Can someone help me with this please
nevsk [136]

Answer:

where is the diagram?

Step-by-step explanation:

7 0
3 years ago
The weights of adobe bricks used for construction are normally distributed with a mean of 3 pounds and a standard deviation of 0
dedylja [7]

Answer:  a) 0.8413, b) 0.9987.

Step-by-step explanation:

Since we have given that

Mean = 3 pounds

Standard deviation = 0.25 pounds

n = 28 bricks

So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?

P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413

b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?

P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987

Hence, a) 0.8413, b) 0.9987.

4 0
3 years ago
40% of the students in Jody's class
77julia77 [94]
40% = 40/100 = 0.40
Find 40% of 20
20 * 0.40 = 8
Solution: 8 students traveled
7 0
3 years ago
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