PLEASE HELP!!!!!!!!!!!

Mathematics

1 answer:

krok68 [10]2 years ago

7 0

Its the red one bc its between 1 and 12

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An inlet pipe can fill an empty swimming pool in 5hours, and another inlet pipe can fill the pool in 4hours. How long will it ta

yan [13]

Answer:

It will take 2 hours, 13 minutes and 20 seconds for both pipes to fill the pool.

Step-by-step explanation:

Given that an inlet pipe can fill an empty swimming pool in 5hours, and another inlet pipe can fill the pool in 4hours, to determine how long it will take both pipes to fill the pool, the following calculation must be performed:

1/5 + 1/4 = X

0.20 + 0.25 = X

0.45 = X

9/20 = X

9 = 60

2 = X

120/9 = X

13,333 = X

Therefore, it will take 2 hours, 13 minutes and 20 seconds for both pipes to fill the pool.

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2 years ago

Prove that an equilateral triangle can be constructed on any given line segment

xz_007 [3.2K]

Step-by-step explanation:

Answer is in the photo with diagram

8 0

2 years ago

HELPPPPP!!!! ASAP

kolbaska11 [484]

Answer: The projectile reaches its maximum height after 20 seconds.

Step-by-step explanation:

Given the function:

$h(t) = -16t^2 + 640t$

You can following formula (which gives the x -coordinate of the vertex of the parabola) in order to find after how many seconds the projectile takes to reach its maximum height:

$x=t=-\frac{b}{2a}$