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4 years ago

If F(x) = 4x + 7, which of the following is the inverse of F(x)?

Mathematics

2 answers:

jek_recluse [69]4 years ago

7 0

The inverse of this would be

f^-1(x) = -7/4 + x/4

vodka [1.7K]4 years ago

4 0

Answer:C.f^1=x-7/4

Step-by-step explanation:apexs

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Sales in Tiffin ties declined from 420 in last year to 360. What percentage drop is that

drek231 [11]

Answer:

14.29%

Step-by-step explanation:

<h3>Given</h3>

Initial sales = 420
Later sales = 360

<h3>Solution</h3>

<u>Drop in sales </u>

420 - 360 = 60

<u>Percentage drop </u>

60/420*100% = 14.29%

5 0

4 years ago

Unit rate for $56 and 25 gal

Anna35 [415]

You would have to divide $56 divided by 25 gallons which would equal $2.24 that the answer I hope it helped

8 0

4 years ago

A professor thinks that the students in her statistics class this term are less creative than most students at this university.

choli [55]

Answer:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

Step-by-step explanation:

$\mu=35\\n=23\\\=x=33\\s=5\\\alpha=0.1$

1. Null and alternative hypothesis

$H_{0}:\mu=35\\H_{1}:\mu$

2. Significance level

$\alpha=0.1\\1-\alpha=0.99$

Freedom degrees is given by:

$v=n-1\\v=23-1=22$

For a sgnificance level of 0,01 and 22 freedom degrees, t-student distribution value is:

$t_{0.01;23}=-2. 5083$

3. Test statistic

$t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }$

$t=\frac{33-35}{\frac{5}{\sqrt{23} } }$

$t=-1,918$

In this case, we have an one left tailed analysis, it means that null hypothesis is rejected if $t$

$-1.918>-2.5083$

Conclusion:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

3 0

3 years ago

Use the grouping method to factor this polynomial completely.<br> 3x3 + 12x2 + 2x + 8

dezoksy [38]

Answer:

(3x^2 + 2)(x + 4).

Step-by-step explanation:

3x3 + 12x2 + 2x + 8

3x^2(x + 4) + 2(x + 4) The x + 4 is common to the 2 groups so we have:

(3x^2 + 2)(x + 4).

3 0

3 years ago

WILL GIVE BRAINLY NEED HELP BAD PLZ WUICK <br> What is the perimeter of the triangle?<br> units

AysviL [449]

Answer:

26units!

Step-by-step explanation:

4 0

3 years ago