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3 years ago

Please make sure this is right I only have 6 questions :)

Mathematics

1 answer:

Morgarella [4.7K]3 years ago

3 0

Answer:

Step-by-step explanation:

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Pleas help me !!! It’s due today

kolezko [41]

KE=0.5xmxv2
=0.5x 1.2x10^3x (3.4x10^3)^2=6936000000

6 0

3 years ago

1) A projectile is thrown upward so that its distance above the ground after t seconds is

leonid [27]

Answer:

After 22 seconds the projectile reach its maximum height of 4,840 units

Step-by-step explanation:

we have

$h(t)=-10t^{2}+440t$

This is a vertical parabola downward (because the leading coefficient is negative)

The vertex is a maximum

Find out the coordinates of the vertex

Convert the quadratic equation in vertex form

Factor -10

$h(t)=-10(t^{2}-44t)$

Complete the square

$h(t)=-10(t^{2}-44t+22^2)+(10)(22^2)$

$h(t)=-10(t^{2}-44t+22^2)+4,840$

Rewrite as perfect squares

$h(t)=-10(t-22)^{2}+4,840$

The vertex is the point (22,4,840)

therefore

After 22 seconds the projectile reach its maximum height of 4,840 units

4 0

3 years ago

What is 3(5x^2-9x) evaluated for x=-3

Studentka2010 [4]

Answer:

216

Step-by-step explanation:

put -3 where x is

3 ( 5 -3^2 - 9(-3) )

3 ( 45 + 27 )

3 (72)

216

4 0

2 years ago

Read 2 more answers

Six more than twice a number is 24

Mars2501 [29]

Answer:

Step-by-step explanation:

I would say the answer is 6

6 + 6 than times by two is 24

3 0

3 years ago

Unit rate for 3 inches of rain in 6 hours

Travka [436]

3 (inches) / 6 (hrs) = 1/2 (or 0.5) inches per hr <==

6 0

3 years ago

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