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aalyn [17]
3 years ago
13

What is the answer for my math test

Mathematics
1 answer:
choli [55]3 years ago
7 0

WHAT THE HECK IS THIS

I DONT EVEN KNOW THIS

THE HECK

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Records show that 12% of all college students are foreign students who also smoke. It is also known that 40% of all foreign coll
Sati [7]

Answer: the percent of the students at this university are foreign = 30%

Step-by-step explanation:

Given: Probability that college students are foreign students who also smoke: P(S|F)=0.12

Probability that foreign college students smoke P(S∩F)=0.4

The probability that the students at this university are foreign :

P(F)=\dfrac{P(S\cap F)}{P(S|F)}  [By conditional probability formula]

=\dfrac{0.12}{0.4}\\\\=0.3

Hence, the percent of the students at this university are foreign = 30%

6 0
3 years ago
The graph of the function f(x) = –(x + 6)(x + 2) is shown below. On a coordinate plane, a parabola opens down. It goes through (
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Answer:

see below

Step-by-step explanation:

f(x) = –(x + 6)(x + 2)

The function is increasing until it reaches the vertex, so it will increase until x=-4.  The function will decrease after the vertex, so after x = -4

increasing: -∞ < x < -4

decreasing : -4 < x < ∞

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3 years ago
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What is the question?

Step-by-step explanation:

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2 years ago
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What does 3rd person omniscient mean
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3 0
3 years ago
Add: f(x)+g(x)<br> f(x) = 2x2 – 3x² + 7x+1<br> g(x) = 4x2 + 5x +12<br> Submit
prisoha [69]

Answer:

f(x) + g(x) = 2x^3 + x^2 + 12x + 13

Step-by-step explanation:

We are given these following functions:

f(x) = 2x^3 - 3x^2 + 7x + 1

g(x) = 4x^2 + 5x + 12

Add: f(x)+g(x)

To add them, we combine the like terms. So

f(x) + g(x) = 2x^3 - 3x^2 + 7x + 1 + 4x^2 + 5x + 12 = 2x^3 + (-3+4)x^2 + (7+5)x + 1 + 12 = 2x^3 + x^2 + 12x + 13

The added function is:

f(x) + g(x) = 2x^3 + x^2 + 12x + 13

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2 years ago
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