2 years ago

If 3 x 742 = 2,226, then

Mathematics

1 answer:

Shkiper50 [21]2 years ago

3 0

Answer:

Step-by-step explanation:

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Clairemont runs 10 km in 1 hour. how many kilometers does she run in half and hour? in 2 1/2 hours?

Darya [45]

She would run 15 km in an hour and a half and 25 km in 2 1/2 hours

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3 years ago

Louisa ran at an average speed of five miles per hour along an entire circular park path. Calvin ran along the same path in the

docker41 [41]

Answer:

15 miles

Step-by-step explanation:

Let $x$ be the miles in the circular park path, $t_{L}$ the time Louisa takes to finish and $t_{C}$ the time Calvin takes to finish both in hours.

Then $x$ , the longitude is equal to the velocity times the time used to finish. So

$x=5t_{L}$

$x=6t_{C}$

And the difference between Louisa's time and Calvin' time is 30 minutes, half an hour. So:

$t_{C}=t_{L}-0.5$

Three equations, three unknowns, the system can be solved.

Equalizing the equation with x :

$5t_{L}=6t_{C}$

In this last equation replace $t_{C}$ with the other equation and solve:

$5t_{L}=6(t_{L}-0.5)\\ 5t_{L}=6t_{L}-3\\ 3=6t_{L}-5t_{L}\\ 3=t_{L}\\ t_{L}=3$

With Louisa's time find x:

$x=5t_{L}\\ x=5(3)\\ x=15$

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2 years ago

What is the simplified value of 5x to the power of 3 over 10x squared

andrey2020 [161]

5x^3/10x^2
*Simplify 5/10 to 1/2
*simplify the exponent so that x^1 is on top
1x/2
FINAL ANSWER:
x/2

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3 years ago

5(k - 78) = 40 Please help

solong [7]

Answer:

k=86

Step-by-step explanation:

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2 years ago

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Which number is divisible by 3? A) 1,794 B) 1,912 C) 1,270 D) 473

Karolina [17]

Answer:

Step-by-step explanation:

should be A.

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2 years ago