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Mademuasel [1]
3 years ago
11

While walking home on a dark night, Joanna saw a bright light in the sky and concluded that it must have been a spaceship from a

nother planet. Which of these questions could Joanna answer using scientific methods of investigation?
A) Can aliens read our minds?
B) Does Joanna actually believe in aliens?
C) What is the aliens spacecraft made from?
D) What percent of people in the area saw a bright light that night?
Mathematics
2 answers:
ikadub [295]3 years ago
6 0
C i believe. hope this helps :)
vekshin13 years ago
4 0
D makes sense because it's the only option that is using a legitimate form of data collection.
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Solve for h and c to find what h and c equals; 34.50=4h+7c and 30.50=8h+3c
Irina18 [472]
34.5=4h+7c
(34.5-7c)/4=h
Put h= (34.5-7c)/4 into another equation
30.5=8h+3c
30.5=2(34.5-7c)+3c
30.5=69-14c+3c
11c=38.5
c=38.5/11
Put c=38.5/11 into one of the equations
to calculate the h.


4 0
3 years ago
The area of a rectangular parking lot is 7031m? If the with of the parking lot is 79m, what is its length?
serg [7]
The length of the parking lot is 89m.

To find the length, we can abide by the following formula:

L = A/W

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Given this formula, we can set up an equation:

7,031 / 79 = 89

The length of the parking lot is 89 meters.
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1 year ago
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Valentin [98]

Answer:

312.5

Step-by-step explanation:

Is means equals and of means multiply

75 = 24% * n

Change to percent form

75 = .24 n

Divide each side by .24

75/ .24 = .24n/.24

312.5 = n

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A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​$69. A season ski pass costs ​$350. The
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Divide the season pass cost by the daily capstone:

350 / 69 = 5.07

They would have to ski 6 days for the season pass to be less expensive

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Answer: I think number three is 60 I think it is

Step-by-step explanation:

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