3 years ago

Does anyone know this?

Mathematics

1 answer:

vovikov84 [41]3 years ago

7 0

The answer is letter E.
You had to insert f(x) into g(x).
So (x+2)^2 - (x+2) - 3 = x^2 + 3x - 1

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4. From a faculty of six professors, six associate professors, ten assistant professors, and twelve instructors, a committee of

Degger [83]

Answer:

P=0.228

Step-by-step explanation:

We know that from a faculty of six professors, six associate professors, ten assistant professors, and twelve instructors, a committee of size six is to be selected.

Therefore, we have 34 people.

We calculate the number of possible combinations:

$C^{34}_6=\frac{34!}{6!(34-6)!}=1344904\\$

Of the 6 professors we choose 2, and of the other 28 people we choose 4.

We calculate the number of favorable combinations:

$C_2^6\cdot C_4^{28}=\frac{6!}{2!(6-2)!}\cdot \frac{28!}{4!(28-4)!}=15\cdot 20475=307125\\$

Therefore, the probability is:

$P=\frac{307125}{1344904}=0.228$

8 0

3 years ago

The volume of a cylinder is 980 pi The height of the cylinder is 20 in. What is the radius of the cylinder?

AlexFokin [52]

█ Question █

The volume of a cylinder is 980 pi The height of the cylinder is 20 in. What is the radius of the cylinder?

█ Explanation █

We know the volume of the cylinder and the height, too. We are looking to find the radius. Do the following equation that is posted in the screenshot.

Answer: The radius is 7

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia