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3 years ago

1. What net force is required to accelerate a car at a rate of 2 m/s2

Mathematics

1 answer:

jeka943 years ago

7 0

Answer:

Step-by-step explanation:

Data:-

Given:

a= 2m/s^2

m=3000kg

Required:

F=?

Solution:-

F= ma

F= 3000×2

F= 600N

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Which situation is best represented by the following equation?

Gennadij [26K]

Answer:

Step-by-step explanation: because W in the equation is the number of weeks she paid for the self defense class. and the 12.50 would be the registration fee because that is added on top of the number of 40w.

40w + 12.50 = 492.50

-12.50 -12.50

40w = 480.00

w = 12 which is how many weeks she paid

5 0

3 years ago

An electric company charges a certain rate per kilowatt-hour (\text{kWh})(kWh)left parenthesis, start text, k, W, h, end text, r

Studentka2010 [4]

Step-by-step explanation:

The equation is given by :

63.25=800r+3.50

Here,

63.25 is the electric company charges

3.5 is an administrative fee

800 is charge per kilowatt hours

r is rate per kilowatt hour

In this proble, we need to tell that what does r represents. Hence, r shows kilowatt per hour.

We can solve it as follows :

63.25-3.5=800r+3.50-3.50 (Subtracting 3.50 to the both sides)

59.75=800r

$r=\dfrac{59.75}{800}\\\\r=0.0746$

8 0

3 years ago

10 of the students in Miss Ransom‘s class play an instrument. These 10 students make up 40% of the class how ,many students are

Mashutka [201]

Answer:

250 students

Step-by-step explanation:

Given data

Let the total number of students be x

Number of students that plays instrument = 10

Hence

40% of x = 10

40/100*x= 100

0.4x=100

x=100/0.4

x= 250

Hence there are 250 students in total

3 0

2 years ago

It is known that 40% of adult workers have a high school diploma. If a random sample of 10 adult workers is selected, what is th

KIM [24]

Answer:

The expected number of adult workers with a high school diploma is 4 out of 10

Step-by-step explanation:

4 out of 10 = 40%

3 0

3 years ago

The circle below has center C, and its radius is 4 feet. Find the area of the sector with central angle DCE given

garik1379 [7]

Answer:

$area = \frac{8}{3}pie ft^2$

Step-by-step explanation:

Area of sector is given as θ/360*πr²

Where,

θ = central angel of sector, m < DCE = 60°

r = radius = 4 feet

Area of sector = $\frac{60}{360}*pie*4^2$

$area = \frac{1}{6}*pie*16$

$area = \frac{1*16}{6}*pie$

$area = \frac{16}{6}*pie$

$area = \frac{8}{3}pie ft^2$

Area of the sector = 8/3π ft²

5 0

3 years ago