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3 years ago

Who investigates civil rights violations and how are those violations tracked

Mathematics

1 answer:

laiz [17]3 years ago

6 0

The FBI investigates civil right violations

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Which of the expressions below are equal to 3x + 9y + 15? Select all that apply.

devlian [24]

Answer:
C) 3(x + 3y + 5)
D) 3x + 3(3y +5)

5 0

3 years ago

The price of a house is originally listed at $135,000. The owners are having a hard time selling it and decide to reduce the pri

tatyana61 [14]

((99,900−135,000)
÷135,000)×100
=−26%

7 0

3 years ago

ABCD is a trapezium in which AB parallel DC ,DC=30cm and AB=50cm .If X and Y are respectively the mid point of AD and BC then pr

Ratling [72]

I have attached the answer. Hope it helps.

Download pdf

3 0

3 years ago

A group of researchers wants to know whether men are more likely than women to contract a novel coronavirus. They surveyed two r

olasank [31]

Answer:

Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance

null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Step-by-step explanation:

<em>Step(I)</em>:-

Given surveyed two random samples of 390 men and 360 women who were tested

first sample proportion

$p_{1} = \frac{360}{390} = 0.9230$

second sample proportion

$p_{2} = \frac{47}{52} = 0.9038$

Step(ii):-

Null hypothesis : H₀ : There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Alternative Hypothesis:-

There is difference between proportion of positive tests among men is different from the proportion of positive tests among women

$Z = \frac{p_{1}- p_{2} }{\sqrt{PQ(\frac{1}{n_{1} }+\frac{1}{n_{2} } } }$

where

$P = \frac{n_{1}p_{1} +n_{2} p_{2} }{n_{1}+n_{2} }$

P = 0.920

$Z= \frac{0.9230-0.9038}{\sqrt{0.920 X0.08(\frac{1}{390}+\frac{1}{52} } )}$

Test statistic Z = 0.13008

Level of significance = 0.10

The critical value Z₀.₁₀ = 1.645

Test statistic Z=0.13008 < 1.645 at 0.1 level of significance

Null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

7 0

3 years ago

In the figure below, XZ =DF and _X = D.

yuradex [85]

Answer:

Option (4)

Step-by-step explanation:

Given : XZ ≅ DF and ∠X ≅ ∠D

To prove : ΔXYZ ≅ ΔDEF

Statements Reasons

1). XZ ≅ DF 1). Given

2). ∠X ≅ ∠ D 2). Given

3). XY ≅ DE 3). Required information

4). ΔXYZ ≅ ΔDEF 4). By SAS property of congruence

Therefore, Option (4) will be the answer.

4 0

3 years ago