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2 years ago

What's the answer to this?

Mathematics

2 answers:

sergij07 [2.7K]2 years ago

8 0

3 1/4 :) mark brainliest?

LenKa [72]2 years ago

8 0

Answer:

13/4 or 3 1/4

Step-by-step explanation:

Make into improper fractions:

4x3+1 = 13, 1x3+1 = 4

13/3 ÷ 4/3

Dividing fractions rule: ALWAYS make the second one a reciprocal (flip the fraction) and then change the sign. Remember KCC, Keep, Change, Change.

So: 13/3 x 3/4

The 3's cancel leaving you with 13/4 or 3 1/4

Hope that helps. Brainliest is appreciated

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A projectile is fired into the air with an initial vertical velocity of 160 ft/sec from ground level. How many seconds later doe

djverab [1.8K]

The maximum height of the projectile is the maximum point that can be gotten from the projectile equation

The projectile reaches the maximum height after 5 seconds

The function is given as:

$\mathbf{h(t) = -16t^2 + 160t}$

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$\mathbf{h'(t) = -32t + 160}$

Set to 0

$\mathbf{h'(t) = -32t + 160 = 0}$

So, we have:

$\mathbf{-32t + 160 = 0}$

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Hence, the projectile reaches the maximum after 5 seconds