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mafiozo [28]
3 years ago
10

What is the answer to this question?

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0
First plug in f and g:
3 x^{2} +1-  [1-x]
Then distribute 3 x^{2} +1-1+x
Combine like terms
3 x^{2} +x
Now plug in 2 for x
3( 2^{2} )+2
3(4)+2=12+2=14

Hope that helps
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Simplify the expression (2y+1)-4y^2+2
Katena32 [7]

Answer:

-4y^2+2y+3

Step-by-step explanation:

(2y+1)-4y^2+2

2y+1-4y^2+2

-4y^2+2y+1+2

-4y^2+2y+3

5 0
2 years ago
Read 2 more answers
A class consists of 1/2 freshmen, 1/8 sophomores, and 1/8 juniors; the rest are seniors. What fraction of the class is seniors?
Firlakuza [10]

Answer:

2/8

Step-by-step explanation:

freshman=4/8

1/8 soph    1/8 jr

add all together u get 6/8

the rest is seniors so its 2/8

8 0
3 years ago
When Ximena commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 38 minutes and a
irga5000 [103]

Answer:

The interval that represents the middle 68% of her commute times is between 33.5 and 42.5 minutes.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 38 minutes, standard deviation of 4.5 minutes.

Determine the interval that represents the middle 68% of her commute times.

Within 1 standard deviation of the mean. So

38 - 4.5 = 33.5 minutes

38 + 4.5 = 42.5 minutes.

The interval that represents the middle 68% of her commute times is between 33.5 and 42.5 minutes.

6 0
3 years ago
85×250=_______ + 387= _______
Neko [114]

Answer:

21,637

Step-by-step explanation:

You can just use a caculator- Or simple multiplication by putting it on top of eachother.

You can do this many ways,just multiply with pen and paper,put 250 on top,and 85 on bottom which is 21,250,the add from there!

Hope I helped!!

7 0
2 years ago
Read 2 more answers
Which of these is the algebraic expression for "some number to the power of six?" A.6x B.X+6 C.X^6 D.6^X
Alina [70]

Answer:

C

Step-by-step explanation:

A and B can be removed because they don't have the "^" known as a carrot which symbolizes a number raised to a certain power.

D is wrong because it says 6 is raised to the x power.

C is correct because a value will be raised to the sixth power.

7 0
3 years ago
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