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2 years ago

WILL MARK BRAINLEST, 15 POINTS

Mathematics

2 answers:

tankabanditka [31]2 years ago

7 0

Answer:

1 hour and 12 minutes

Step-by-step explanation:

Let's say x = time it takes for the trains to be 204 miles apart.

Speed = Distance/Time,

Time = Distance/Speed,

x = 204/ (80 + 90) = 204/170 = 1 and 1/5 hours or 1 hour and 12 minutes

fgiga [73]2 years ago

4 0

Answer:

one hour and 12 minutes

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Basketball shoes are on sale for 22%off. what is the reagular price if the sale price is $42?

Brrunno [24]

Answer:

The regular price was $53.85

Step-by-step explanation:

78% = $42

42 ÷ 78 x 100 = 100% = $53.85 (when rounded to 2 d.p)

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3 years ago

What is the greatest fraction you can make using the digits 4, 7, and 9?

wel

Answer:

(7^9)/4 = 40,353,607/4

Step-by-step explanation:

Assuming each digit is used once and exponentiation is allowed, the largest numerator and smallest denominator will result in the largest fraction.

If other functions, such as factorial are allowed, then there might need to be a limit on the number of times they are applied. For example,

(7!)^(9!)/4 has about 1 million digits

something like ...

((7!)^(9!))!/4 has many more digits than that

and you can keep piling on the factorial symbols to any desired depth.

6 0

3 years ago

Write 2.3181818... as a mixed number

JulsSmile [24]

Let x= 2.3181818...

then

10x=23.181818... and

1,000x=2,318.1818...

1,000x-10x=2,318.1818...-23.181818...

990x = 2,318 - 23
990x = 2295

x=2295/990

dividing by 5 both numerator and denominator:

x= 459/198

now, x= 198 + 198+ 63

so $x= 2\frac{63}{198}$

Answer: $x= 2\frac{63}{198}$

7 0

3 years ago

I dont know the answer

Anettt [7]

Answer:

Step-by-step explanation:

1/4 × 4 = 1

4 and 4 will get cancelled and only 1 will be left.

Hope this helps

plz mark as brainliest!!!!!

3 0

3 years ago

On this day last year we got 14 inches of snow. This year we got 2 inches. What is the percent of change and is it an increase o

gizmo_the_mogwai [7]

Answer:D

Step-by-step explanation:

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3 years ago