3 years ago

5th grade math. Correct answer will be marked brainliest.

Mathematics

1 answer:

dezoksy [38]3 years ago

5 0

The Answer is : 2,2

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A ball with mass m kg is thrown upward with initial velocity 28 m/s from the roof of a building 17 m high. Neglect air resistanc

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a. At its maximum height, the ball has zero vertical velocity, so

$-\left(28\dfrac{\rm m}{\rm s}\right)^2=2(-g)(y_{\rm max}-17\,\mathrm m)$

$\implies y_{\rm max}=57\,\mathrm m$

b. The ball's height in the air $y$ at time $t$ is given according to

$y=17\,\mathrm m+\left(28\dfrac{\rm m}{\rm s}\right)t-\dfrac g2t^2$

Solve for $t$ when $y=0$ :

$17+28t-4.9t^2=0\implies t\approx6.3\,\mathrm s$

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3 years ago

Plz help I will name Brainliest

Art [367]

Answer:

question#1 = B

question#2 = A

question#3 = D

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3 years ago

Which type of angle is formed by the intersection of the perpendicular line segments

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Answer:Right Angle

Step-by-step explanation:

since they cross vertically and horizontally right in the middle the four spaces all the corners should be a 90* angle

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3 years ago

Aim: I can solve two-step word problems involving per

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Answer:

75 kg

Step-by-step explanation:

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2 years ago

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Can the sides of a triangle have lengths 2.4, 6.5, and 7.4?

Ira Lisetskai [31]

Answer:

yes.

Step-by-step explanation:

2.4 + 6.5 = 8.9 (triangle inequality)

8.9 > 7.4

= it is possible to make a triangle wit these measurements.

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2 years ago