MATHEMATICS MIDDLE SCHOOL

Find the reciprocal of the number. Multiply to check your answer.2/3


A.1/2


B.3/2


C.2


D.3

Answers

Answer 1
Answer: To find the reciprocal of a fraction, you just need to "flip" it. To check your work, you multiply the fraction and the reciprocal to get 1.

the reciprocal if 2/3 is 3/2

(2)/(3) * (3)/(2) = (6)/(6) = 1


The answer is B
Answer 2
Answer: i think it would be B

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 I hope i helped you out 

What is irrational numbers and what is rational numbers?

Answers

Rational number is whole number that can be represented by a fraction, as:

1/4 - 2.55 - 0.7777... - -5, etc

Irrational number is the the number that can not be represented by a fraction, as:

0.01001000100001...

What is 30/7 is a mixed number

Answers

30/7 is an improper fraction, to find its equivalent as a mixed number, we need to find out how many times the denominator, 7, can go into the numerator.....

30/7=4 r2

7 goes into 30  4 times with a remainder of 2

30/7 becomes 4 2/7

Answer= 4 2/7
4 2/7
30/7 is an improper fraction,in order to turn it into a mixed number,you must divide the denominator by the numerator.after you divide,there is a quotient,
the quotient is the whole number,to get the numerator,the reminder of a division problem is the numerator,for the denominator,it stays the same.To check your answer,you must multiply the denominator by the the number and than add it to the numerator.

5x=2x-15
y=2x-15
and y=5x

Answers

5x = 2x-15
3x = -15
x = -5

substitute x = -5 into one of your equations
so y = 5x becomes y = 5 x -5
y= -25

x=-5 and y=-25
5x=2x-15 =  x=-5 
 
IDK the other two

Draw a picture to show 43

Answers

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Please help me I’m so lost

Answers

Answer:

  40.6 units

Step-by-step explanation:

Arc length is given by the formula ...

  s = rθ

where θ is the measure of the central angle in radians.

There are 2π radians in a circle (360°), so π radians in 180°. That can be used to convert the central angle ADB to radians for use in the formula.

  ∠ADB = 360° -194° = 166°

  ∠ADB = 166° = (166/180)π radians = 83π/90 radians

Then the arc length AB is ...

  length AB = (14)(83π/90) ≈ 40.561 units

The length of arc AB is about 40.6 units.
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