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Volgvan
3 years ago
5

Two asteroids are 1000 km apart and are heading straight for each other. One asteroid is travelling at 59 km per second and the

other at 41 km per second. How long does it take for them to collide?
Mathematics
1 answer:
Nataliya [291]3 years ago
8 0

Answer:

10 seconds.

Step-by-step explanation:

The velocity at which they are approaching each other = 59 + 41 = 1000 km per second.

Velocity = distance  / time

So time =  distance / velocity

= 1000 / 100

= 10 seconds.

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Find the error and explain why its wrong
UNO [17]

Answer:

The last part.

Step-by-step explanation:

The error is only at the last part. Basically the answer part.

The answer should be —

13 \sqrt{5}

We don't multiply the square roots when adding or subtracting. That'd contradict the rules.

Here, we let the square root of five as x-term.

\sqrt{5}  = x

4 \sqrt{5}  + 9 \sqrt{5}  = 4x + 9x

As we add up, we would get 13x. Thrn we convert x-term back to square root of five.

The answer would be —

13x \\ x =  \sqrt{5}  \\ 13 \sqrt{5}

Remember that we don't multiply the square roots when adding or subtracting.

5 0
3 years ago
Point P is located at (-2, 7), and point R is located at (1, 0). find the y value for the point Q that is located 2/3 the distan
Dominik [7]

Just did this one.

Answer: 7/3 or about 2.3, choice (d).



Step-by-step explanation:


R-P= (3,-7). the displacement vector.


P+x(R-P) moves to x times distance between


P+(R-P) = R moves to 100% of the distance.


Q = P+2/3(R-P)


= (-2,7)+2/3(3,-7)


= (-2,7)+(2,-14/3)


= (0,7-14/3)


= (0,7/3)


= (0,2.3333...)


Read more on Brainly.com - brainly.com/question/11869584#readmore

7 0
3 years ago
A community college bookstore has a fixed monthly operating cost of $16,495 for salaries, their building, and taxes. The books t
skad [1K]

Answer:

$143,370 per month

Step-by-step explanation:

16495 + 8.75(14500) = x

16495 + 126875 = x

143370 = x

Answer:  $143,370 per month

Hopefully this is right

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4 years ago
How can you the unit rate on a graph that goes through the origin ?
Nonamiya [84]
It must be about the origin in order to do that
5 0
3 years ago
Mr. Jacobs is going to make a histogram of the test scores from the last math test he gave. He plans to first organize the data
DaniilM [7]

Answer:

b 70-79

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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