2 years ago

Please answer the question from the attachment.

Mathematics

1 answer:

kompoz [17]2 years ago

3 0

C - 11 /9 = 9

Multiply both sides by 9

c - 11 = 81

add 11 to each side to isolate c

c = 81 + 11 = 92

You might be interested in

A random sample of 300 Americans planning long summer vacations in 2009 revealed an average planned expenditure of $1,076. The e

Rufina [12.5K]

Answer:

$(1024.69,\ 1127.31)$

Step-by-step explanation:

We know that the sample size was:

$n = 300$

The average was:

${\displaystyle {\overline {x}}}=1,076$

The standard deviation was:

$\s = 345$

The confidence level is

$1-\alpha = 0.99$

$\alpha=1-0.99\\\alpha=0.01$

The confidence interval for the mean is:

${\displaystyle{\overline {x}}} \± Z_{\frac{\alpha}{2}}*\frac{s}{\sqrt{n}}$

Looking at the normal table we have to

$Z_{\frac{\alpha}{2}}=Z_{\frac{0.01}{2}}=Z_{0.005}=2.576$

Therefore the confidence interval for the mean is:

$1,076\± 2.576*\frac{345}{\sqrt{300}}$

$1,076\± 51.31$

$(1024.69,\ 1127.31)$

This means that <em>the mean planned spending of all Americans who take long summer vacations in 2009 is between $ 1024.69 and $ 1127.31</em>

3 0

2 years ago

12x-y,3/2n+1/2p,y²-1

vladimir2022 [97]

What is this. what am i supposed to do here? solve it? idk what n,p,x, or y is.

7 0

2 years ago

Use Order Of Operations to solve 12/3x[15-6]+3

jarptica [38.1K]

12/3x(11) that is the simplest form you can get it to

6 0

2 years ago

Read 2 more answers

If quadrangles have all equal angles, are they congruent?

xenn [34]

Answer:

yes because it says all angles are the same

3 0

2 years ago

Hurrry i need help nowwwwwwwwwwwwwwwww

nikklg [1K]

Answer: A y=4x^2+1

Step-by-step explanation:According to slope A is the answer

3 0

2 years ago

Read 2 more answers