All categories

4 years ago

Given f(x)=x +4, g(x) = 5x – 2; find (f + g)(3)

Mathematics

1 answer:

Katarina [22]4 years ago

8 0

Answer:

Step-by-step explanation:

f (x)=x+4=4x,g (x)=5x-2=3x

4x+3x=7x

You might be interested in

Please help with this problem

Svetlanka [38]

The answer should be 25.64$
You multiple that by 8% and then what you get out of it you add on to what you got as the total .

6 0

3 years ago

Read 2 more answers

Find the common difference of the sequence shown. 1/6, 1/3, 1/2 , 2

Morgarella [4.7K]

Answer:

1/6

Step-by-step explanation:

sequence should be 1/6,1/3,1/2,2/3

common difference=1/3-1/6=2/6-1/6=1/6

or 1/2-1/3=(3-2)/6=1/6

or c.d.=2/3-1/2=(4-3)/6=1/6

8 0

3 years ago

The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship co

Alona [7]

Answer:

95% Confidence interval for the variance:

$3.6511\leq \sigma^2\leq 34.5972$

95% Confidence interval for the standard deviation:

$1.9108\leq \sigma \leq 5.8819$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

$s^2=2.89^2=8.3521$

The confidence interval for the variance is:

$\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}$

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

Then, the confidence interval can be calculated as:

$\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972$

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:

$\sqrt{3.6511}\leq \sigma\leq \sqrt{34.5972}\\\\\\1.9108\leq \sigma \leq 5.8819$

6 0

3 years ago

Natalie baked 12 cookies. She

boyakko [2]

Answer:

Her sister ate more cookies.

Step-by-step explanation:

If you convert 3/6 into a simplified fraction, it turns into half. Half of 12 is 6. Natalie ate 3 cookies. Therefore, her sister ate more.

7 0

3 years ago

Read 2 more answers

What is point d on the coordinate

taurus [48]

Algebra

The formula to find the coordinate is (x,y)

Meaning, point D is (1,4)

7 0

3 years ago

Read 2 more answers