2 years ago

PLEASE HELP WITH THIS I DONT UNDERSTAND THIS ONE

1 answer:

4 0

At a quick glance I would just say to multiply each coordinate by 2 (6,2) becomes (12,4) because its being scaled up by 2

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irga5000 [103]

Identify and calculate formulas and examples...

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2 years ago

An astronaut on the moon throws a baseball upward. The astronaut is 6 ft 6 in tall, and the initial velocity of the ball is 40 f

weqwewe [10]

Answer:

t = 0.293 s and 14.52 s

Step-by-step explanation:

The heights of the ball in feet is given by the equation as follows :

$S = -2.7t^2+40t+6.5$

Where t is the number of seconds after the ball was thrown.

We need to find is the ball 18 ft above the moon's surface.

Put S = 18 ft

$-2.7t^2+40t+6.5=18\\\\-2.7t^2+40t=18-6.5\\\\-2.7t^2+40t-11.5=0$

It is a quadratic equation. Its solution is given by :

$t=\dfrac{-40+\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)},\dfrac{-40-\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)}\\\\t=0.293\ s,14.52\ s$

So, the ball is at first 0.293 s and then 14.52 s above the Moon's surface.

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2 years ago

HElPPPPP NEED QUiCk whats the answer for 2+2=____ a.5 b.7 c.4 d.3

Fed [463]

Answer:

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2 years ago

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A circular pool has a radius of 10 feet. what is the area of the surface if the water? use 3.1r as pi

dem82 [27]

No use 3.14
by the way

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2 years ago

If the cost of 100 copies is $3.10, how many copies can be made for $155?

Tatiana [17]

Given that: 100 copies = $3.10

Find cost of 1 copy:
1 copy = $3.10 ÷ 100 = $0.031

Find the cost of 155 copies: 
155 copies = $0.031 x 155 = $4.81 (nearest hundredth)

Answer: $4.81

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2 years ago