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3 years ago

Z+(z-6)-2=-10 how do you solve this

Mathematics

1 answer:

umka21 [38]3 years ago

5 0

Combine like terms
2z-8=-10

Then add 8 to both sides
2z=-2

Then divide both sides by 2
z=-1

Final answer: z=-1

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A two digit number is chosen at random. Find the probality that the number is a perfect square

Novay_Z [31]

Answer:

5 by 99

Step-by-step explanation:

its 5 by 99

squares:

7 0

3 years ago

Read 2 more answers

Mr. Teal orders the same business lunch for 5 people. Everyone has a salad for $5, a steak sandwich for $12, lemonade for $3, an

brilliants [131]

5 + 12 + 3 + 4 + 3 = $27

Multiply $27 by five because he bought five of those lunches, and that equals a total of $135. That's an expensive lunch! :)

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3 years ago

A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the United States. Suppose a sample of

mars1129 [50]

The expected number of a distribution is its mean.

The expected number of Americans who are satisfied with the way things are going in the United States is 6
The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

The given parameters are:

$\mathbf{p = 30\%}$ --- the proportion that are satisfied

$\mathbf{n = 20}$ --- the sample size

(a) The expected number that are satisfied

This is calculated using:

$\mathbf{E(x) = np}$

So, we have:

$\mathbf{E(x) = 20 \times 30\%}$

$\mathbf{E(x) = 6}$

The expected number of Americans who are satisfied with the way things are going in the United States is 6

(b) The standard deviation of those that are satisfied

This is calculated using:

$\mathbf{\sigma = \sqrt{n \times p \times (1 - p)}}$

So, we have:

$\mathbf{\sigma = \sqrt{20 \times 30\% \times (1 - 30\%)}}$

$\mathbf{\sigma = \sqrt{20 \times 30\% \times 70\%}}$

$\mathbf{\sigma = \sqrt{4.2}}$

$\mathbf{\sigma = 2.05}$

The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

Read more about expected value and standard deviations at:

brainly.com/question/17088771

4 0

3 years ago

Which formula best expresses your monthly ending balance?

igor_vitrenko [27]

Withdrawals must be subtracted from the beginning balance since to withdraw means to take out, so withdrawing money would lower the balance.
Deposits are added to the balance, so they must be added in the equation.

The answer is c) Beginning Balance - Withdrawals + Deposits = Ending Balance

4 0

4 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B8ux%5E%7B5%7D%20%7D%20%5Csqrt%7B2ux%7D" id="TexFormula1" title="\sqrt{8ux^{5} } \sqr

lozanna [386]

Answer:

4ux³

Step-by-step explanation:

√8ux⁵ √2ux

√8*2 u*u x⁵*x

√16u²x⁶

4ux³

3 0

3 years ago