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sp2606 [1]
3 years ago
12

A professor gives his students 9 essay questions to prepare for an exam. Only 3 of the questions will actually appear on the exa

m. How many different exams are possible?
Mathematics
1 answer:
Talja [164]3 years ago
4 0

Answer: 84

Step-by-step explanation:

The total number of the questions is 9

Possible question is 3

This is combination

Therefore n=9 and r=3

Combination formula=n! / ((n-r)! r!)

9C3=9! /((9-3)! 3!)

=362880 /(6! 3!)

=362880/4320

=84

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Lewis has a bag of colored marbles. The bag contains 24 red marbles , 36 blue marbles , and 60 yellow marbles. What are the rati
leva [86]

Answer:

Step-by-step explanation:

The total number of marbles is 24 + 36 + 60 = 120

Red: 24/120 = 1/5

Blue: 36/120 = 6/20 = 3/10

Yellow: 60 / 120 = 1/2

4 0
3 years ago
G(t) = (t-10) (t+1)<br> 1) What are the zeros of the function?
aniked [119]

Step-by-step explanation:

Write properties of function:

x intercept/zero: ; T1= -1 and T2=10

vertex form: g(t)=  (t-9/2)^2, (-121/4)

vertex: 9/2, 121/4

Explanation Write properties of function: Write properties of function:

x intercept/zero: ; t1=-1, and t2=10

vertex form: (t-9/2)^2, (-121/4)

vertex: 9/2, 121/4

hope this helped

4 0
3 years ago
A consumer wanted to find out how accurate Siri (an Apple digital assistant) is, so he asked questions on general facts and reco
Mashcka [7]

Answer:

The answer is "0.869"

Step-by-step explanation:

Number of sample (n) = 84

Number of correct response (X) = 73

Calculating the Sample proportion:

Formula:

\text{Sample proportion}=\frac{\text{number of sample}}{\text{correct responses}}

                              =\frac{n}{X}\\\\= \frac{73}{84} \\\\=0.869

6 0
3 years ago
What is the range of the number of points scored?
MatroZZZ [7]

Answer:

I think it is A, I might be wrong.

Step-by-step explanation:

3 0
3 years ago
Given the sets A = {-4, -1, 3, 5, 9} and B = {-2, -1, 0, 1, 2, 3}, the set AUB (u is upside down) is given by:
ki77a [65]

The upside down U is the symbol for the intersection of sets. The intersection of two sets is the set that contains the elements that are common to both sets. Which elements are both in set A and in set B?

Answer: {-1, 3}

7 0
3 years ago
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