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2 years ago

Please help this is hard

Mathematics

2 answers:

Ket [755]2 years ago

6 0

The sides that are congruent are sides AB and side DC

morpeh [17]2 years ago

5 0

Hi!

Parallelograms have 4 sides. The parallel lines have equal lengths.

Which means sides BC, and AD are equal. AB, DC are also equal.

Only AB, DC are listed as an option so the answer is Sides AB and DC.

Hope this helps! :)
-Peredhel

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The rectangular diagram shows the design for a tood

Ksivusya [100]

Answer:

Step-by-step explanation:

What diagram?

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3 years ago

Convert to an improper fraction. Type in your answer with the negative in the numerator.

MariettaO [177]

Answer:

-35/4

Step-by-step explanation:

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3 years ago

Select the correct answer.

Serjik [45]

Answer:

A . (2,4)

Step-by-step explanation:

Let's solve for x.

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Step 1: Add -2y to both sides.

x+2y+−2y≤4+−2y

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3 years ago

Find the area of the following ellipse (round to nearest tenth).

goblinko [34]

Answer:

$\huge\boxed{A=60\pi cm^2}$

Step-by-step explanation:

The formula of an area of a elipse:

$A=\pi ab$

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8 0

2 years ago

National data indicates that 35% of households own a desktop computer. In a random sample of 570 households, 40% owned a deskt

Elan Coil [88]

Answer:

Yes, this provide enough evidence to show a difference in the proportion of households that own a desktop.

Step-by-step explanation:

We are given that National data indicates that 35% of households own a desktop computer.

In a random sample of 570 households, 40% owned a desktop computer.

Let p = population proportion of households who own a desktop computer

SO, Null Hypothesis, $H_0$ : p = 25% {means that 35% of households own a desktop computer}

Alternate Hypothesis, $H_A$ : p $\neq$ 25% {means that % of households who own a desktop computer is different from 35%}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of 570 households who owned a desktop computer = 40%

n = sample of households = 570

So, test statistics = $\frac{0.40-0.35}{{\sqrt{\frac{0.40(1-0.40)}{570} } } } }$

= 2.437

Since, in the question we are not given with the level of significance at which to test out hypothesis so we assume it to be 5%. Now at 5% significance level, the z table gives critical values of -1.96 and 1.96 for two-tailed test. Since our test statistics doesn't lies within the range of critical values of z so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that % of households who own a desktop computer is different from 35%.

3 0

3 years ago