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3 years ago

A 1500 kg car speeds up from zero to 3.0 ms. it has kinetic energy of 6750 J at top spreed. True or False?

Mathematics

1 answer:

Andrew [12]3 years ago

5 0

Answer:

True

KE = 1/2 mv^2

m = 1500 kg

v = 3 m/s

KE = 1/2 (1500 kg)(3 m/s)^2

KE = (750 kg)(9 m^2/s^2)

KE = 6,750 J

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Sandy works at a clothing store. She makes $7 per hour plus earns 10% commission on her sales. She worked 78 hours over the last

olga2289 [7]

Answer:

rounded, she will earn around $2,757.43 for the two weeks.

3 0

3 years ago

Simplify 3(x - 6) - 4(x + 3). A)-x - 30 B)-x - 9 C)-x - 6 D)-x - 30

morpeh [17]

Answer:

-x-30

Step-by-step explanation:

first you need to distribute:

3(x)+3(-6) -4(x)+ (-4)(3)

Then you multiply:

3x+(-18)-4x+(-7)

then you combine like terms:

3x-4x= -1x 

-18+(-7)= -25

simplified:

-1x-30

3 0

4 years ago

Read 2 more answers

92 = -4(2r - 5) r = ? Help!

Roman55 [17]

Hello there!

$92 = -4(2r - 5)\\$

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to switch sides.

$-4(2r-5)=92$

Then you divide by -4 from both sides of the equation.

$\frac{-4(2r-5)}{-4}=\frac{92}{-4}$

Simplify

$2r-5=-23$

Next you had to add by 5 from both sides of the equation.

$2r-5+5=-23+5$

Simplify

$2r=-18$

You can also divide by 2 from both sides of the equation.

$\frac{2r}{2}=\frac{-18}{2}$

Simplify it should be the correct answer.

$r=-9$

Answer⇒⇒⇒⇒⇒r=-9

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

5 0

4 years ago

Read 2 more answers

Select all that apply

BlackZzzverrR [31]

Answer:

it's a little bit confusing and not too clear but the third one should be correct

5 0

3 years ago

Please help me this is a week overdue

olga2289 [7]

Range 18 function no because range subtract 25- (-5) and it has the same out put (8) repeating

8 0

3 years ago