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Yuri [45]
3 years ago
13

Please Help1! Brainliest Answer! Thank you

Mathematics
2 answers:
Mrrafil [7]3 years ago
8 0
Answer:

C

Explanation:

15/20 divided by 5 on both you get 3/4
BabaBlast [244]3 years ago
8 0

Answer:

<h2>C.  3 feet</h2><h2 />

Step-by-step explanation:

the idea is ratio and proportion:

<u>  15 foot statue    </u>  =       <u>        x foot tall     </u>  

20 foot shadow               4 foot long shadow

cross multiply:

20 (x) = 15 (4)

simplify:

20 x = 60

x = 60 / 20

x = 3 feet

so the answer is C.

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What is the final amount of a $300 investment earning 4.5% interest compounded quarterly for 3 years?
wel
The formula A=P(1+(r/n))^nt should be followed when answering
300=P
R=0.045
N=4
T=3
300(1+(0.045/4))^4x3
Answer is=343.102
7 0
3 years ago
Please help me Will mark brainiest
astraxan [27]
For the volume of triangular prism, volume = 0.5xaxbxc
=0.5x10x7x6
=210cm^3
4 0
3 years ago
Read 2 more answers
Which shows a correct order to solve this story problem? Kent and Curtis went to the state fair. They had to pay a total of $7.1
KiRa [710]
The problem is asking how much each person will need to pay. Simplifying the problem into an equation with variables (an algorithm) will greatly help you solve it:

S = Sales Tax = $ 7.18 per any purchase
A = Admission Ticket = $ 22.50 entry price for one person (no tax applied)
F = Food = $ 35.50 purchases for two people

We know the cost for one person was: (22.50) + [(35.50/2) + 7.18] =
$ 47.43 per person. Now we can check each method and see which one is the correct algorithm:

Method A)
[2A + (F + 2S)] / 2 = [ (2)(22.50) + [35.50 + (2)(7.18)] ]/ 2 = $47.43
Method A is the correct answer

Method B)
[(2A + (1/2)F + 2S) /2 = [(2)(22.50) + 35.50(1/2) + (2)7.18] / 2 = $38.55
Wrong answer. This method is incorrect because the tax for both tickets bought are not being used in the equation.

Method C)
[(A + F) / 2 ]+ S = [(22.50 + 35.50) / 2 ] + 7.18 = $35.93
Wrong answer. Incorrect Method. The food cost is being reduced to the cost of one person but admission price is set for two people.
6 0
3 years ago
4. The numencal coefficient in 3xy is<br>A-3<br>В 2<br>D ху<br>Ску​
BabaBlast [244]

Answer:

3

Step-by-step explanation:

Because in 3xy 3 is the numerical coefficient

3 0
3 years ago
Read 2 more answers
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate
Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

\sigma^2 = 484\\\sigma =\sqrt{484} = 22

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get

E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0
3 years ago
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