Ask question

Ask question

All categories

Murljashka [212]

3 years ago

9

What is (g ° f)(2) for f(x) = 10 /x - 1 and g(x) = 7x – 4?

1 answer:

lord [1]3 years ago

6 0

G of f means plug f(x) into g(x)

but we want at x=2

we can solve to ways

1) find g(2)=7x-4
= 10

f(10)= 10 / (x-1)
answer is 10/ 9

method 2 is

(f(g)x)= 10/ ((7x-4)-1)
=10/(7x-5)

now x=2
=10/(7(2)-5)
=10/9

same answer, hope this helps

You might be interested in

The copy machine at the library made a copy of Leslie's 3-page essay in just

Lesechka [4]

The answer is 100 if you do it step-by-step

6 0

3 years ago

Which of the following is most likely the value of the seventh term of the sequence graphed below?

IRISSAK [1]

I think the answer is A. Hope it help!

4 0

3 years ago

Read 2 more answers

Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal

faust18 [17]

Answer:

The probability is $P(X \le 70) = 0.9685$

Step-by-step explanation:

From the question we are told that

The mean values is $M_1 = 15 \ minutes , \ M_2 = 30\ minutes, \ M_3 = 20 \ minutes$

The standard deviation is $\sigma_1 = 1 \ minutes , \ \sigma_2 = 2 \ minutes , \ \sigma = 1.5 \ minutes$

Generally the total mean is mathematically represented as

$\= x = \sum M_i$

=> $\= x = 15 + 30 + 20$

=> $\= x = 65$

Generally the total variance is mathematically represented as

$V(x) = \sum \sigma^2_i$

=> $V(x) = 2^2 + 1^2 + 1.5^2$

=> $V(x) = 7.25$

Generally the total standard deviation is mathematically represented as

$\sigma = \sqrt{V(x)}$

=> $\sigma = \sqrt{7.25 }$

=> $\sigma = 2.69$

Generally the probability that it takes at most 70 min of machining time to produce a randomly selected component is mathematically represented as

$P(X \le 70) = 1 - P( X > 70 )$

Here $P(X > 70) = P(\frac{X - \mu }{\sigma} > \frac{70 - 65}{ 2.69} )$

$\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )$

$P(X > 70) = P(Z > 1.8587 )$

From the z table

The area under the normal curve to the right corresponding to 1.8587 is

$P(Z > 1.8587 ) = 0.031535$

So

$P(X \le 70) = 1 - 0.031535$

=> $P(X \le 70) = 0.9685$

7 0

3 years ago

The following equation can be used to determine how many hammers the company can produce each day if x people are making hammers

Len [333]

Where Is The Equation ??

5 0

3 years ago

7,218 round off thousand

GrogVix [38]

<h2>correct answer: 7,000</h2><h2>7,218 rounded to the nearest 1,000 </h2><h2>would be 7,000!</h2>

5 0

3 years ago

Read 2 more answers