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3 years ago

Congruent polygons and how to find the measure of numbered angles

Mathematics

1 answer:

dimulka [17.4K]3 years ago

8 0

See the number that it says

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How'd we go from 724 to the answer?

nlexa [21]

There is no question here

7 0

3 years ago

A publisher reports that 35% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

Leviafan [203]

Answer:

The pvalue of the test is 0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim

Step-by-step explanation:

A publisher reports that 35% of their readers own a laptop.

This means that the null hypothesis is:

$H_0: p = 0.35$

A marketing executive wants to test the claim that the percentage is actually different from the reported percentage.

This means that the alternate hypothesis is:

$H_{a}: p \neq 0.35$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.35 is tested at the null hypothesis:

This means that $\mu = 0.35, \sigma = \sqrt{0.35*0.65}$

A random sample of 190 found that 32% of the readers owned a laptop.

This means that $X = 0.32, n = 190$

Z-statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.32 - 0.35}{\frac{\sqrt{0.35*0.65}}{\sqrt{190}}}$

$z = -0.87$

pvalue of the test and decision:

As we are testing that the mean is different from a value and z is negative, the pvalue of the test is 2 multiplied by the pvalue of z = -0.87

Looking at the z-table, z = -0.87 has a pvalue of 0.1922

2*0.1922 = 0.3844

0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim

5 0

3 years ago

What does the fundamental theorem of algebra state about the equation 2x^2-x+2=0

d1i1m1o1n [39]

Answer:

See below

Step-by-step explanation:

The Fundamental Theorem of Algebra states that the degree of the polynomial is the number of roots, where some may be complex depending on the polynomial or degree.

In this case, 2x^2-x+2=0 has its highest degree of 2, so there are 2 roots.

6 0

3 years ago

Will give brainliest Pleaseeee HELP asap no guessing please

stealth61 [152]

Answer:

S, T & R

Step-by-step explanation:

T is 1/2 of S and R is 1/2 of T

<em>good luck, i hope this helps :)</em>

5 0

3 years ago

a rhombus can be cut in half by a diagonal to make two isosceles triangle correct or incorrect if incorrect give an example to s

Nataly [62]

The definition of a rhombus is that it's a polygon with four congruent sides. If you split one into two pieces with a diagonal, then yes, it will be two isosceles triangles because two sides are congruent.

7 0

3 years ago