MATHEMATICS MIDDLE SCHOOL

What's the diameter and radius with the circumference of 40

Answers

Answer 1
Answer: circumference = pi x Diameter.
Diameter = circumference/ pi
Diameter = 40/pi = 12.7
Radius = 1/2 Diameter
Radius = 1/2 x 12.7 = 6.35
Answer 2
Answer: The number is the ratio of the circumference of a circle to its diameter. The value of is approximately 3.14159265358979323846...The diameterof a circle is twice the radius. Given the diameter or radius of a circle, we can find the circumference

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A jar contains 4 red marbles, 4 green marbles, and 5 blue marbles.If we choose a marble, then another marble without putting the first one back in the jar, what is the probability that the first marble will be blue and the second will be green?

Answers

Answer:

20/156 or 5/39

Step-by-step explanation:

the first part of the equation will be:

5/13 (5 is how many blue and 13 is altogether)

the next part of this equation is the green marble. Because we didn't put the blue marble back, the next part of the equation will be:

4/12 (4 is how many green and 12 is altogether now that one blue was taken out)

and from there, you multiply 5/13 with 4/12, with will give you 20/156, or 5/39 if you simplify.

Answer: On khan it is 5/39

Step-by-step explanation:

just got it right lol

What's the whole number of 2/2

Answers

the answer is 1 because 2 goes into 2 with any remaining
That would be 1 because 1 equals 100 and 2/2 equals 100%

Write an algebraic expression for the phrase:six times a length w

Answers

Six times a length w means that we will repeat the w six times.

This can be expressed algebraically in two ways:
1- using addition:
    six times a length w = w+w+w+w+w+w 
2- using multiplication:
    six times a length w = 6*w

Evaluate 54 divided by 6 plus 54

Answers

Answer:

54/6 +54 = 63

Step-by-step explanation:

Answer:

63

Step-by-step explanation:

54 divided by 6 equals 9 plus 54 equals 63

Please help me with the area one

Answers

area=legnth times width
area=24


legnth=8

subsitute
24=8 times widht
what times 8=24?
the answer is 3
or just divide both sides by 8

answer is 3 feet

Your bank gives you a special loan of $112,000. At the end of 30 years, you will pay the bank $176,400 in simple interest. What is the annual interest rate on your loan?

Answers

woah
that's alot of interest

ok so simple interest is the same every year
therefor if the total interest is 176400 in 30 years, then the interest for 1 ear is 176400/30=5880

ok so now
112000 times x%=5880
percent means parts out of 100 so x%=x/100

112000 times x/100=5880
112000x/100=5880
1120x=5880
divide both sides by 1120
x=5.25
answer is 5.25%
Interest , I = PRT/100

R = 100I / PT.

P = 112 000.   T = 30 years.  Interest = 176 400.

R = 100 * 176 400 / (112 000 * 30)

R = 5.25

Rate = 5.25% per year.
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