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3 years ago

5

Question 1/2 Multiply. (Click on image to enlarge it.)

1 answer:

deff fn [24]3 years ago

3 0

I think c.10 sorry if I’m wrong.

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-2n(5+n-8-3n) n =3 algebra

valina [46]

Answer:

<h2>54</h2>

Step-by-step explanation:

$- 2n(5 + n - 8 - 3n) \\ n = 3 \\ - 2(3)(5 + 3 - 8 - 3(3)) \\ - 6(5 + 3 - 8 - 9)$

$- 6(8 - 8 - 9) \\ - 6( - 9) \\ = 54$

8 0

3 years ago

Exhibit B In order to determine whether or not there is a significant difference between the hourly wages of two companies, two

ser-zykov [4K]

Answer: c. 3.01

Step-by-step explanation:

The test statistic for difference between two population mean (when population standard deviation is known) is given by :

$z=\dfrac{\overline{x}_1-\overline{x}_2}{\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}}$

, where $n_1$ = Size of first sample

$n_2$ = Size of second sample

$\overline{x}_1-\overline{x}_2$ = Difference between two sample mean.

$\sigma_1$ = standard deviation for population 1.

$\sigma_2$ = standard deviation for population 2.

As per given , we have

$n_1=80$

$n_2=60$

$\overline{x}_1=\$6.75$

$\overline{x}_2=\$6.25$

$\sigma_1=\$1$

$\sigma_2=\$0.95$

Substitute these values in formula , we get

$z=\dfrac{6.75-6.25}{\sqrt{\dfrac{(1)^2}{80}+\dfrac{(0.95)^2}{60}}}$

$z=\dfrac{0.50}{\sqrt{0.0275416666667}}$

$z=\dfrac{0.50}{0.165956821694}$

$z=3.0128318613\approx3.01$

Hence, the value of the test statistic is <u>3.01</u>.

Hence, the correct option is c. 3.01 .

7 0

3 years ago

Please help me now help me nowww please

topjm [15]

Answer:

A. 1
B. 3
C. 2
D. 5
E. 4
F. 6

7 0

2 years ago

Please help me with this homework

yulyashka [42]

I disagree. The first one is false. No exponent rules apply if the bases AND the exponents are different.

The second one is true. Bases are the sane so you add exponents. You get 3 to the -5 power. Written with positive exponents it’s 1/3 to the 5.

7 0

3 years ago

Hannah got a $23,400 Unsubsidized Loan to help her pay for college but she wants to pay off the interest only while she is a stu

Radda [10]

Step-by-step explanation:

lícita; de navegar y comerciar; de peticionar a las autoridades; de entrar, permanecer, transitar y salir del territorio argentino; de publicar sus ideas por la prensa sin censura

3 0

2 years ago