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3 years ago

Please help with steps thx

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

6 0

Answer:

Step-by-step explanation:

see picture

when doing questions like these it's all about breaking up the shape into digestible parts

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A study of the career paths of hotel general managers sent questionnaires to an SRS of 160 hotels belonging to major U.S. hotel

otez555 [7]

Answer:

(10.78483, 12.61517)

Step-by-step explanation:

It is given that the genera mangers of few hotels were sent some questionnaires for conducting a study for the career paths in the major hotel chains of the United States.

Number of hotels = 160

Number of response received = 103

The average number of years these general mangers was in their current hotels, $\bar x$ = 11.7 years

Confidence Interval, CI = 0.99

Therefore,

a = 0.01, |Z(0.005)| (from standard normal table)

∴ 99% of CI = $\bar x \pm Z \times \frac{s}{\sqrt n}$

$= 11.7 \pm 2.58 \times \frac{3.6}{\sqrt {103}}$

$(10.78483, 12.61517)$

3 0

3 years ago

What is the width of a box when the length is x+2, the height is x+8, and the volume is x^3+9x^2+6x-16?

Nostrana [21]

(x+2)(x+8) = x^2 +10x +16

(x^2 + 10x + 16)(x-1) = x^3+9x^2+6x-16, so the other dimension is x-1

8 0

3 years ago

Read 2 more answers

I NEED HELP PLEASE! If you can help me with this you amazing! Thank you

krek1111 [17]

Answer:

$a=-3$

Step-by-step explanation:

we have

$a-2=\frac{3+6a}{3}$

Solve for a

That means ----> Isolate the variable a

Factor 3 in the numerator right side

$a-2=\frac{3(1+2a)}{3}$

Simplify right side

$a-2=1+2a$

subtract a both sides

$a-2-a=1+2a-a$

$-2=1+a$

subtract 1 both sides

$-2-1=1+a-1$

$-3=a$

Rewrite

$a=-3$

6 0

3 years ago

A certain couple tells you that they have two children, at least one of which is a girl. what is the probability that they have

Sidana [21]

The answer is 50/50. The either child is a boy or a girl. 50/50 chance

3 0

3 years ago

Simplify it was x there so u not confused

Mariulka [41]

Step-by-step explanation:

here's the solution: -

=》

$\frac{x {}^{6} }{ {x}^{4} } \times {x}^{2}$

=》

$\frac{x \times x \times x \times x \times x \times x}{x \times x \times x\times \: x } \times x \times x$

=》

$x \times x \times x \times x$

=》

${x}^{4}$

5 0

2 years ago