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3 years ago

PLS HELP ME ASAP

Mathematics

1 answer:

kolezko [41]3 years ago

4 0

Answer:

Step-by-step explanation:

5 x 5 x 7

= 175

hope it helps u

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Whats the word phrase of 2(5-n)

mixas84 [53]

Answer:

Two times the difference between five and n.

3 0

2 years ago

Write 2 1/16 as decimal (that is not a 21)

Lapatulllka [165]

2 1/16 = 2 + 1/16

11/16 = 0.0625

2 + 0.0625 = 2.0625

Answer

2.0625

5 0

3 years ago

Apply the distributive property to write an equivalent expression 4(2+w)

Alja [10]

Hi 4w+8 is the answer

8 0

3 years ago

One of the more famous anecdotes in the field of statistics is known as the "Lady Tasting Tea" and involves the renowned statist

mote1985 [20]

Answer:

$n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36$

And rounded up we have that n=8068

Step-by-step explanation:

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

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

We want for this case a 95% of confidence desired, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The margin of error for this case is $ME =\pm 0.01$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

The estimated proportion for this case is $\hat p=0.3$ . And replacing into equation (b) the values from part a we got:

$n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36$

And rounded up we have that n=8068

7 0

3 years ago

The diagram shows a rhombus inside a regular hexagon work out the angle x

kvv77 [185]

Answer:

x = 60°

Step-by-step explanation:

The rest of the question is the attached figure.

And it is required to find the angle x.

As shown, a rhombus inside a regular hexagon.

The regular hexagon have 6 congruent angles, and the sum of the interior angles is 720°

So, the measure of one angle of the regular hexagon = 720/6 = 120°

The rhombus have 2 obtuse angles and 2 acute angles.

one of the obtuse angles of the rhombus is the same angle of the regular hexagon.

So, the measure of each acute angle of the rhombus = 180 - 120 = 60°

So, the measure of each acute angle of the rhombus + the measure of angle x = the measure of one angle of the regular hexagon.

So,

60 + x = 120

x = 120 - 60 = 60°

So, the measure of the angle x = 60°

6 0

3 years ago