MATHEMATICS MIDDLE SCHOOL

Jess observed that 60% of the people at a mall on a particular day shopped for clothes. If 2500 people at the mall did not shop for clothes that day, the number of people who shopped for clothes that day was ______.

Answers

Answer 1
Answer:

(3,750 people

60%=did shop

40%=did not shop =2,500

2,500/40  =  x/100

40x = 2,500x100

40x=250,000

x = 250,000/40

x=6,250

   6,250 =all people  at the mall

6,250 - 2,500 =3,750  (60%)


   OR

(2,500 x60)/40 = 3,750
Answer 2
Answer:

Answer:

3750

Step-by-step explanation:

2500 is 40% of 6250. 6250 - 2500 = 3750 or 60% of the people.

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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.

Sum of (x+5) and (2x+3)

Answers

Answer:

3x+8

Step-by-step explanation:

First, we can write the sum into a mathematical expression:

The sum of (x+5) and (2x+3)

(x+5)+(2x+3)

However, we do not need the parenthesis. It is unnecesarry here as we are just adding the two parts:

x+5+2x+3

Using commutative property, we can rearrange the symbols so that the x's are with each other and the numbers are with each other:

x+2x+5+3

Now we can simplify the expression:

3x+8

Hope this helped :)

Cupro-nickel coins are minted by mixing copper and nichel in the ratio 4:1a) How much copper is needed to mix with 20kg of nickel?
b) How much nickel is needed to mix with 20kg of copper?

Answers

Copper:   Nickel =  4:1

a) How much copper needed for 20 kg nickel
                 C:N = 4: 1 
                 C:20 = 4:1

C/20 = 4/1       Cross Multiply
C*1 = 4*20
C = 80     

80kg Copper would be needed.

b) How much Nickel would be needed for 20 kg of Copper
                 C:N = 4: 1 
                 20:N = 4:1

20/N = 4/1       Cross Multiply
4*N = 1*20
4N = 20   Divide both sides by N.  

N = 20/4 = 5

5kg Nickel would be needed.

Writ each fraction as a decimal 4/9 8/15 and -11/12

Answers

.4 repeated then.53 repeated and -.916 repeated
4/9 is equal to 0.44444444...repeating.
8/15 is equal to 0.5333333...repeating.
-11/12 is equal to- 0.9166666... repeating.

Katerina draws a square. She wants to draw one line to divide the square into 2 triangles. Is it possible for her to divide the square into 2 obtuse triangles? Explain

Answers

Its not possible to divide the square into two obtuse triangles since each angle within the square is 90 so if you were to draw a line between two of the edges you can only get two right angle trangle.

Use the distributive property to create an equivalent expression for 50+10x

Answers

Answer:

(5×10)+(1+10x)

Step-by-step explanation:

50/5=10

10/10=1

Answer: 10(5+x)

Step-by-step explanation:
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