4 years ago

Helppp and plz hurryyy

Mathematics

1 answer:

dalvyx [7]4 years ago

8 0

Answer:

Step-by-step explanation:

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Alberto ran a race at a speed of 9 meters per second. Omar had a 6 meter head start and ran at a speed of 7 meters per second. B

zloy xaker [14]

Answer: Alberto run 27 meters.

Time taken By Alberto=3 seconds

Step-by-step explanation:

Let d be the distance Alberto ran to catch Omar.

Then, distance ran by Omar=x-6

Also, $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

Since, both started running at the same time.

Time taken By Alberto= $\frac{x}{9}$

Time taken By Omar= $\frac{x-6}{7}$

Now, at the point they meet time taken by both is equal.

$\frac{x}{9}=\frac{x-6}{7}\\\Rightarrow\ 7x=9(x-6)\\\Rightarrow7x=9x-54\\\Rightarrow9x-7x=54\\\Rightarrow\ 2x=54\\\Rightarrow\ x=27$

Hence, Alberto run 27 meters.

Time taken By Alberto= $\frac{27}{9}$ =3 seconds

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4 years ago

Solve the system of equations by graphing

Rudik [331]

Answer:

Step-by-step explanation:

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3 years ago

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garri49 [273]

Answer:

t = 130s

Step-by-step explanation:

$s = 3.9 * 10^{7} km$

$v = 3 * 10^{5} km/s$

$t = ?$

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