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3 years ago

When is it helpful to use simpler numbers to solve a problem

Mathematics

1 answer:

never [62]3 years ago

8 0

Probably if the equation has a lot of decimals

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At the beginning of its route, a garbage truck accelerates at 10ms2 as it is driven down the road. By the end of the route, the

Dmitry [639]

Answer:

$2.5\ m/s^2$

Step-by-step explanation:

Newton's Second Law: Force on a body is equal to the product of mass and acceleration of the centre of the mass of the body.

$Force(F)=Mass(m)\times Acceleration(a)$

Initially:

$Let\ mass=m\ kg\\\\acceleration=10\ m/s^2\\\\Force(F)=m\times 10=10m$

At the end of the road:

$Let\ mass=4\times m\ kg\\\\acceleration=a\ m/s^2\\\\Force(F)=4m\times a=4ma$

$Both\ forces\ are\ equal\\\\4ma=10m\\\\divide\ both\ the\ sides\ by\ m\\\\4a=10\\\\a=\frac{10}{4}\\\\a=2.5\ m/s^2$

8 0

2 years ago

-4(y+1)+2 <br> help i am very confused

likoan [24]

Answer:

-4y-2

Step-by-step explanation:

-4(y+1)+2

-4 times y is -4y

-4 times 1 is -4

-4y-4 plus 2

is 4y-2

4 0

2 years ago

Round 4.645 to the<br> nearest whole number.

jeka94

5. since .6 is greater than 5, we round up.

7 0

3 years ago

Read 2 more answers

Select all of the following tables which represent y as a function of x.

Schach [20]

Answer:

the second and third one

Step-by-step explanation:

two y's that are the same can't have 2 outcomes

3 0

2 years ago

Which of the following are solutions to the equation sinx cos(pi/7)-sin(pi/7)cosx=sqrt(2)/2

Arturiano [62]

The solution would be like this for this specific problem:

sin ( x - ( pi / 7 ) ) = - sqrt ( 2 ) / 2
x - ( pi / 7 ) = - pi / 4 + 2n*pi or x - ( pi / 7 ) = (5pi / 4 ) + 2n*pi
x = ( pi / 7 ) - ( pi / 4 ) + 2n*pi or x = ( 5pi / 4 ) + ( pi / 7 ) + 2n*pi
x = ( - 3pi / 28 ) + 2n*pi

<span>I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

6 0

2 years ago

Read 2 more answers