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3 years ago

A store is selling a bicycle for $245.00. The store marks bicycles up by 40%. What is the original price of the bicycle?

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

6 0

Answer:

147

Step-by-step explanation:

if you multiply by .40 then subtract that from 245 you get 147

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A town council wants to estimate the proportion of residents who are in favor of a proposal to upgrade the computers in the town

tester [92]

Answer:

E.Yes, because the sample is large enough to satisfy the normality conditions

Step-by-step explanation:

Given that a random sample of 100 residents was selected, and 97 of those selected indicated that they were in favor of the proposal then;

The percent in favor of the proposal is 97/100 *100 =97%

Thus from this information ;

p=0.97 and q=1-p =1-0.97 =0.03 where p=population proportion

Finding mean and standard deviation will be;

μp =mean of sample proportion

μp=p= 0.97

δp= standard deviation of sample proportion

δp=√{pq/n }= √{(0.97*0.03)/100} where n=100 (sample size)

δp= 0.0171

3δp = 3*0.0171 =0.051

check using ;

{p- 3δp, p+3δp} = { 0.97-0.05,0.97+0.05} ={0.92,1.02}

compare if {0.92,1.02} lies in {0,1)

A sample is large enough if the interval {p- 3δp, p+3δp} lies wholly within the interval {0,1}

This sample wholly lie in the interval of {0,1} thus it is safe to assume p' is approximately normally distributed

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3 years ago

Angie baked 100 cookies and

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3/4 Because 4 goes into 12 and 16 and 4 goes into 12 3 times and 16 4 times

So 3/4

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Solve for the distance between (522, 1322) and (9000, -1337) to the third decimal.

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A pair of coordinate always in a form (x, y)
Let (522, 1322) be (x₁, y₁) and (9000, -1337) be (x₂, y₂)

The distance between two coordinates is given by
Distance = $\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$
Distance = $\sqrt{(522-9000)^2+(1322--1337)^2}$
Distance = $\sqrt{(-8478)^2+(2659)^2}$
Distance = $\sqrt{78946765}$
Distance = 8885.200 (rounded to three decimal place)

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A circle is inscribed in an equilateral triangle. A point in the figure is selected at random. Find the probability that the poi

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It’s gotta be A because the circle is usually 60%

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