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riadik2000 [5.3K]
3 years ago
9

A washer and a dryer cost $710 combined. The washer costs $40 less than the dryer. What is the cost of the dryer?

Mathematics
2 answers:
V125BC [204]3 years ago
8 0
You have to set up an equation! x being the dryer and x-40 being the washer because it’s 40$ less, and it’s x+(x-40)=710 because both combined are 710$! and then you just solve!
andriy [413]3 years ago
8 0

(710 - 40) : 2 = 335$ (washer)

335 + 40 = 375 (dryer)

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Answer:

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Step-by-step explanation:

We have the following info given from the problem:

n= 800 the random sample of voters selected from the town

\hat p = 0.34 represent the proportion of residents favored construction

p_o = 0.30 represent the value desired to test.

A political strategist wants to test the claim that the percentage of residents who favor construction is more than  30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: p \leq 0.3

Alternative hypothesis p >0.3

And in order to test this hypothesis we can use a one sample z test for a population proportion and the statistic would be given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

And with the data given we have:

z=\frac{0.34 -0.3}{\sqrt{\frac{0.3(1-0.3)}{800}}}=2.469  

7 0
2 years ago
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Contact [7]

Answer:

See below

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Answer:

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Explanation:

In the given identified the following with reasons.

1. Given

2. Corresponding Angles postulate

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3 years ago
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FrozenT [24]

Answer:

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