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Colt1911 [192]
3 years ago
9

10. In how many ways can a student select 7 out of 10 questions to work on an exam

Mathematics
2 answers:
matrenka [14]3 years ago
7 0

Answer:

Step-by-step explanation:

dedylja [7]3 years ago
7 0

7C10 = 10!/(7!)(10-7)!

7C10 = 10!/(7!)(3!)

7C10 = (10 x 9 x 8 x 7)/(7 x 6 x 5)(6)

7C10 = (10 x 9 x 8)/6

7C10 = 720/6

7C10 = 120

Answer: 120 ways

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45 POINTS PLEASE HELP question 1) Given: f(x) = 3 - x; g(x) = -2x Find g[f(-1)].
andrew11 [14]

1) Given: f(x) = 3 - x; g(x) = -2x Find g[f(-1)].

g(f(x)) = -2(3 - x) = 2x - 6

g(f(-1)) = 2(-1) - 6 = -2 -6 = -8

g(f(-1)) = -8

Looks like the question 2 and 1 are the same

Both find g(f(-1))

5 0
4 years ago
Simplify 6(x + 2) + 7.<br><br> 6x + 9<br> 6x + 15<br> 6x + 19
salantis [7]

Answer:

6x +19

Step-by-step explanation:

6(x +2) +7

distribute the 6 (multiply 6*x and 6*2)

6x + 12

add the 7 to the 12

=6x + 19

4 0
3 years ago
Read 2 more answers
Which of the following equations is non-linear?
lakkis [162]

2x + 6y = 14y - 19x^2 + 12 is a non-linear equation

Step-by-step explanation:

Lets define a linear equation first.

A linear equation is an equation in which there is no variable with exponent greater than 1 or the degree of the equation is 1.

So,

<u>x + 12 = -8x + 10 - 2y</u>

The equation is a linear equation because the degree of the equation is 1.

<u>x = 8x + 19 - 10y</u>

The equation is a linear equation because the degree of the equation is 1.

<u>2x + 6y = 14y - 19x^2 + 12</u>

The equation involve a term with exponent 2 which makes the degree of the equation 2 making it a quadratic equation

<u>2x + 13y + 14x - 7 = 16y - 3</u>

The equation is a linear equation because the degree of the equation is 1.

Hence,

2x + 6y = 14y - 19x^2 + 12 is a non-linear equation

Keywords: Linear, quadratic

Learn more about equations at:

  • brainly.com/question/5102020
  • brainly.com/question/5147732

#LearnwithBrainly

5 0
3 years ago
How many DVDs can you buy with $192 if one DVD costs $16?”
pav-90 [236]

Answer:

You could buy 12 DVDs when one DVD costs $16.

Step-by-step explanation:

192 / 16 = 12

4 0
3 years ago
I NEED HELP TO FIND AREA
Arada [10]

Answer: the answer is 8960

Step-by-step explanation:

3 0
3 years ago
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