3 years ago

Evaluate |-6| + 2|-4| - 3|6| A. -20 B. -4 C. 14

1 answer:

7 0

Hello!

First we will solve the absolute value, giving us 6+8-18. Then we combine giving us 14-18. This gives us -4.

The answer is B) -4

Hope this helped!

You might be interested in

In a manufacturing process a random sample of 9 bolts manufactured has a mean length of 3 inches with a standard deviation of .3

Serggg [28]

Answer:

The correct option is (C) (2.769, 3.231).

Step-by-step explanation:

The confidence interval for mean when the standard deviation is not known is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}$

Given:

$\bar x = 3\\s=0.3\\n=9\\\alpha =1-0.95=0.05$

Compute the critical value as follows:

$t_{\alpha/2, (n-1)}=t_{0.05/2, (9-1)}=t_{0.025, 8}=2.31$

**Use a t-table.

The 95% confidence interval for true mean length of the bolt is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}\\=3\pm 2.31\times \frac{0.30}{\sqrt{9}}\\ =3\pm 0.231\\=(2.769, 3.231)$

Thus, the 95% confidence interval for true mean length of the bolt is (2.769, 3.231).

The correct option is (C).

7 0

3 years ago

Heather bought a CD on sale for $11 and a book that cost $14 the sales tax rate is 5% how much tax did Heather pay for both item

Travka [436]

Add 11 and 14 = 25. Then change 5% to a decimal or .05. 25 x .05= $1.25 this is the tax. Add $25 to $1.25. Answer is $26.25

3 0

3 years ago

What is the federal income tax of a married couple with three children, who have a combined income of $300,000

tino4ka555 [31]

Answer:

I really don't know..but I can try with some guideline on it.

5 0

3 years ago

Is 6,12,24 arithmetic or geometric?

Kisachek [45]

Geometric, hope this help

7 0

4 years ago

What is the value of RS? 2.25 7.25 9 5

Vinil7 [7]

Answer:

7.25

Step-by-step explanation:

7.25 is what I think the anwser is.

3 0

3 years ago