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3 years ago

Help which one is the answer ??

Mathematics

1 answer:

Lelechka [254]3 years ago

8 0

The answer is A.) A smaller percentage of second-lunch students (18%) eat outside.

hope this helps !

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The county animal park is shaped like a triangle. Two perpendicular sides of the park measure 2.3 miles and 3.4 miles. What is t

zalisa [80]

3.91ft squared
a=b*h/2
3.4*2.3/2
3.91

4 0

3 years ago

Public opinion in the large city of Bedrock is that 60 percent of the residents are in favor of increasing taxes to fund alterna

uysha [10]

Answer: 0.8461

Step-by-step explanation:

Let p be the proportion of residents are against the increase of taxes to fund alternatives to drug addiction treatment.

As per given , we have p=0.40

A random sample is taken with size : n= 400

Expecting sample proportion : $\hat{p}=\dfrac{150}{400}=0.375$

Now , the probability that more than 150 of the residents surveyed will be against increasing taxes if a random sample of 400 residents are surveyed will be :

$P(p>0.375)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.375-0.40}{\sqrt{\dfrac{0.40(0.60)}{400}}})$

$=P(z>\dfrac{0.375-0.40}{\sqrt{\dfrac{0.40(0.60)}{400}}})\ \ [\because\ z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}]$

$=P(z>-1.02)=P(z-z)=P(Z$

$\approx0.8461$ [By z-table]

Hence, the approximate probability that more than 150 of the residents surveyed will be against increasing taxes if a random sample of 400 residents are surveyed is 0.8461 .

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3 years ago

What are two values for √81

Molodets [167]

9 or -9 because if -9 is squared the negative cancels

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3 years ago

Find a so that the point (-1,5) is on the graph of f(x)=ax2+1

sasho [114]

Step-by-step explanation:

to solve for a,

f(-1) = 5

a(-1)^2 + 1 = 5

a + 1 = 5, so a=4

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2 years ago

The price of an item has been reduced by 35% . The original price was 91 . Find the price now

nadya68 [22]

You have to take the percentage of the original price and subtract it to find the reduced price

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2 years ago

Read 2 more answers