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2 years ago

I need help on this help help I’ll give out some money

Mathematics

1 answer:

frozen [14]2 years ago

6 0

<h3>a) Never</h3>

{All angles of a rectangle are right}

<h3>b) Always</h3>

{all sides of a rhombus are the same, 4×13=52}

<h3>c) Always</h3>

{oposite angles of a paralleogram are congruent}

<h3>d) Never</h3>

{parallel sides has the same slope}

<h3>e) Always</h3>

{square has all sides of the same length, so it is rhombus}

<h3>f) Sometimes</h3>

{Only if it has angles of 90°}

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Solve the inequality and enter your solution as an inequality comparing the variable to the solution.

pickupchik [31]

Hi Brainiac

-8+x<18

Simplify

x-8<18

Add 18 to both sides

x-8+8<18+8

x<26

I hope that's help:0

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3 years ago

ms turner drove 825 miles in march. she drove 3 times as many miles i march as she did in january.she drove 4 times as many mile

Natalija [7]

Well first you have find out how many miles she drove in march. To find that you have to divide 825 by 3. That equals 275. Well if she drove 4 times more you take 275 x 4 and that equals 1100. She drove 1100 miles.

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3 years ago

If x = 7 units, y = 13 units, and h = 10 units, then what is the area of the parallelogram shown above?

Firdavs [7]

I hope this helps you

Area=y.h

Area=13.10

Area=130

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3 years ago

You have been assigned to determine whether more people prefer Coke or Pepsi. Assume that roughly half the population prefers Co

Alex Ar [27]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

Step-by-step explanation:

For this case we have the following info given:

$ME=0.03$ the margin of error desired

$Conf= 0.95$ the level of confidence given

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

the critical value for 95% of confidence is $z=1.96$

We can use as estimator for the population of interest $\hat p=0.5$ . And on this case we have that $ME =\pm 0.03$ and we are interested in order to find the value of n, if we solve n from equation (a) we got: