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Olenka [21]
2 years ago
13

A building casts a 21 foot shadow along the ground. A person 5 feet 3 inches casts a shadow 7 feet long.

Mathematics
1 answer:
Sonja [21]2 years ago
6 0

Answer:

~28

Step-by-step explanation:

5 feet 3 inches is 5.25 feet.

We divide 7/5.25 which equals 1.3333333333333 (repeating)

That means we multiply 21 by 1.333333333333 which would round up to 28 feet. (the exact answer is 27.99999999999999999)

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How you would convert the repeating, nonterminating decimal to a fraction? Explain the process as you solve the problem.
bixtya [17]

Answer:

x = 0.1515...

100 x = 15.1515...

100 x - x = 15.1515... - 0.1515...

99 x = 15

x = 15 / 99 = 3 ∙ 5 / 3 ∙ 33 = 5 / 33

0.1515... = 5 / 33

Step-by-step explanation:

3 0
2 years ago
Find the probability that the mean annual preciptiation will be between 32 and 34 inches. variable is normally distributed
liq [111]
Supposing, for the sake of illustration, that the mean is 31.2 and the std. dev. is 1.9.

This probability can be calculated by finding z-scores and their corresponding areas under the std. normal curve.  
                                                                     34 in - 31.2 in
The area under this curve to the left of z = -------------------- = 1.47 (for 34 in)
                                                                           1.9
                                                                      32 in - 31.2 in
and that to the left of 32 in   is               z = ---------------------- = 0.421
                                                                             1.9

Know how to use a table of z-scores to find these two areas?  If not, let me know and I'll go over that with you.


My TI-83 calculator provided the following result:

normalcdf(32, 34, 31.2, 1.9) = 0.267  (answer to this sample problem)

5 0
3 years ago
What's 763828-95747 cuz I don't know
Finger [1]
668081 is the answer 

Hope it helps :)

5 0
3 years ago
Read 2 more answers
On a map, 1 inch equals 450 miles. Two cities are 635 miles apart. Approximately how far apart are the cities on the map?
UNO [17]

Answer:B

Step-by-step explanation:

A is wrong because it's less than the 450.

D is wrong because 2 inches would equal 900. So, you're down to B or C. Multiply 450×1.4= 630. 450×1.5= 675. 630 is closer to 635, therefore it is the answer.

7 0
3 years ago
Solve each problem by graphing<br><br><br> -6x+4y=-12<br> y=-3
tigry1 [53]
We need to change -6x+4y=-12 into the Y= mx+b form first.

So: y=3/2x-3

Graph that together with y=-3

The ordered pair would be (0,-3)

7 0
3 years ago
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