3 years ago

What property is 11 multiplied by 12 = (10+1) multiplied by (10+2)

Mathematics

2 answers:

sasho [114]3 years ago

6 0

Distributive Property

Lelu [443]3 years ago

5 0

I think it's the distributive property. I'm not sure. But I hope this helps.

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Given ABC is an isosceles triangle with AB = BC. If the measure of A)43° B)86° C)94° D)137°

nalin [4]

Answer:

iiiii

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate

Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

$\sigma^2 = 484\\\sigma =\sqrt{484} = 22$

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

$E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get

$E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373$

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0

3 years ago

A box of facial tissues is 22 cm by 10.5 cm by 8 cm how much cardboard is on the outside surface?

beks73 [17]

Dude y you even as its just the surface area you just use the formula

4 0

3 years ago

Please help me with this question pls, I really need help

Inessa [10]

Answer: x=7, y=-23
(7,-23)

Explanation:

4 0

3 years ago

Please help Slove for x

gayaneshka [121]

Answer:

x = 20

Step-by-step explanation:

These angles are consecutive interior angles, so when added they will equal 180 degrees (according to the consecutive interior angles theorem).

3x - 10 + 5x + 30 = 180 add/subtract all like terms

8x + 20 = 180

8x = 160

x = 20 <--- This will be your answer

Hope it helps!

7 0

4 years ago