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Nataly [62]
3 years ago
8

2 balls are rolling towards each other from the opposite ends of a straight tube that is

Mathematics
2 answers:
suter [353]3 years ago
8 0

Answer:

6 seconds

Step-by-step explanation:

In second 1, the distance that separates them is  80 cm

Then, in second 2, it is an additional 76 cm which is 156

then 72, etc. etc.

From that, we can continue adding until we the total sum is 420.

80+76+72+68+64+60=420

That's 6 seconds

Not the most elegant solution but I think one of the simplest.

Step2247 [10]3 years ago
3 0
6 seconds!!!!!!!!!!!! that should be the answer
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In a certain university admissions department, 70 more males than females submitted applications for admissions. 20% of the fema
Anuta_ua [19.1K]

Answer:

In total, 1130 people applied in the University.

Step-by-step explanation:

Total applicants admitted = 256

Let the number of females  who applied in University =   k

So, the number of males who applied =  ( k + 70)

Now, 20 %of females are admitted ⇒ 20% of (k) is admitted

or, the number of females admitted in university =  \frac{20}{100}  \times k = 0.2k

Also , 25 %of males are admitted ⇒  25% of (k + 70) is admitted

or, the number of males admitted in university =  \frac{25}{100}  \times (k+70) = 0.25(k+70)

So, according to the question:

0.20k + 0.25(k+70) = Total admissions = 256

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And Total males who applies = ( k + 70) = 600

Now,  TOTAL Applications = MALE applications + FEMALE applications

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Hence, in total 1130 people applied in the University.

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3 years ago
A train travels at a constant speed of 35 feet per second. How many minutes will it take the train to travel exactly 70 miles? (
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4 years ago
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