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3 years ago

I need help please ..

Mathematics

2 answers:

slavikrds [6]3 years ago

8 0

To find average we add up all value and divide it by how many that are

This is also known as mean

725+857+868+198 is 2648

Now we divide that by him many numbers and in this case it is 4

Now we divide 2648 by 4 which is 662

Answer is 662

Vinvika [58]3 years ago

6 0

Answer:

660.5

Step-by-step explanation:

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I need help on this ASAP

pochemuha

Since r=1, area of circle is pi*r^2, which is just pi (1). Your answer is PI.

4 0

3 years ago

Read 2 more answers

Read the following statements. The sum of the angle measures of a triangle is 180°. Two angles of a triangle measure 40°and

raketka [301]

Answer:

what number must be added to sum of two angles that the sum of three angles become 180.

Since sum of two angles is 100 , 80 must be added to 100 to make it equal to 180.

Step-by-step explanation:

Given

sum of measure of angle of triangle = 180°

given two angles 40°and 60°

Let the third angle be x°

thus

40°+ 60°+x° = 180°

100°+x° = 180°

x° = 180°- 100° = 80°

Thus, third angle measure 80°

She must have sum the first two known angles.

as given sum of three angles are 180

she must have assumed other angle to be x

then sum of all three angles must be 180

now to find third angle she subtracted sum of two known angles to find third angle.

other way can what number must be added to sum of two angles that the sum of three angles become 180.

Since sum of two angles is 100 , 80 must be added to 100 to make it equal to 180.

3 0

3 years ago

A bicycle store costs $2700 per month to operate. The store pays an average of $45 per bike. The average selling price of each b

Shtirlitz [24]

The store must sell 45 bicycles each month to break even.

Step-by-step explanation:

Cost per month to operate = $2700

Average paid per bicycle = $45

Average paid of x number of bicycles = 45n

Therefore,

Total operating cost per month = 2700+45n

Average selling price of each bicycle = $105

Price of x bicycles = 105x

For breaking even;

Total operating cost = Total cost of sold bicycles

$2700+45n=105n\\2700=105n-45n\\2700=60n\\60n=2700$

Dividing both sides by 60

$\frac{60n}{60}=\frac{2700}{60}\\n=45$

The store must sell 45 bicycles each month to break even.

Keywords: linear expression, division

Learn more about linear expressions at:

#LearnwithBrainly

8 0

3 years ago

In a 30-60-90 triangle, what is the length of the hypotenuse when the shorter leg is 8 m?

sveta [45]

This is a basic triangle which you should be familiar with, the ratio of their sides to angles is always...

30°:1, 60°:√3, 90°:2

So if the shorter leg is 8 the hypotenuse is 16...

h/8=2/1

h=16 meters

7 0

4 years ago

Read 2 more answers

How can mental math help you find solutions to inequalities?

shepuryov [24]

Answer:

There are many examples the basics are also easy to remember.

Step-by-step explanation:

We can input these for the following equation.

x > 5

(x is greater than 5)

Then compare to - x < 5

(minus x is less than 5)

We try a sum

3x -2 ≤ 1

we can then balance subtract -2

3x ≤ -1

then divide by 3

x= -1 /3

We try another value

3x -2 ≤ 0

1 ≤ 3x

1/3 ≥ x

We can check that each equality fits and alter the number accordingly.

For the first one we are saying it is no greater than 1

For the second we say it is greater than zero.

We are able to prove both have the answer.

Just like when we look for negative percentages and count down we record this as we count in mental math.

7 0

3 years ago