MATHEMATICS MIDDLE SCHOOL

5/2=d−2/4

What does d=?

Answers

Answer 1
Answer: Use GCF to find the denominator, then solve by adding 4/8 to the other side and simplify.
Answer 2
Answer:

Answer:

d = 3

Step-by-step explanation:

(5)/(2)=d-(2)/(4)\qquad\left/(2)/(4)=(2:2)/(4:2)=(1)/(2)\right/\n\n(5)/(2)=d-(1)/(2)\qquad\text{add}\ (1)/(2)\ \text{to both sides}\n\n(5)/(2)+(1)/(2)=d-(1)/(2)+(1)/(2)\n\n(5+1)/(2)=d\n\n(6)/(2)=d\to d=3

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What is the unit form of (2 tens 1 one) x 10

Answers

WILLY, it is Two tens and one one multiplied by 10 is:

(20 + 1) * 10 = 21 * 10 = 210

What ratio is equivalent to 10/14

Answers

Divide the numerator and the denominator by 2.

(10~divided~by~2)/(14~divided~by~2) = (5)/(7)

(5)/(7) or 5:7 is equivalent to (10)/(14)
to find an eqivalent ration the denominator and numerator have to be both mutiplied or dvided by the same number. 
For example: 10 time 2 = 20
14 times 2 = 28 
so 20/28 is equivalent to 10/14 :)

On Monday, Helen's math teacher gave the class 45 problems to finish by Friday.helen will do the same number of problems each day.How many problems will she do on Friday?

Answers

By using division, it is obtained that

Helen will do 9 problems on Friday

What is division?

Division is the process by which value of single unit can be calculated from the value of multiple unit.

The number to be divided is known as dividend, the number by which the dividend is divided is the divisor, the result obtained is the quotient and the remaining part is the remainder.

There is a well known formula for division

Divisor x Quotient + Remainder = Dividend.

Here,

Total number of problems given on Monday = 45

Number of days from Monday to Friday = 5

Number of problems Helen solve on Friday = 45 / 5 = 9

Helen will solve 9 problems on Friday

To learn more about division, refer to the link:

brainly.com/question/25289437

#SPJ2

Helen would have to do 9 problems each day. 45/5=9

Sean has a piece of string 7/8 meter long. He uses 1/5 of the piece of string to tie a package and cuts the rest into 5 equal pieces. What is the length of each piece

Answers

Answer:

7/50 meter.

Step-by-step explanation:

He has 7/8 meter. 1/5 of the piece of string is

(7)/(8)(1)/(5) = (7)/(40).

Then, he uses 7/40 meter to tie a package. The rest of string will be

(7)/(8)-(7)/(40) = (7)/(10).

Then, the rest of string after he uses 1/5 is 7/10. Finally, he cuts the rest into 5 equal pieces, that is

(7)/(10)(1)/(5) = (7)/(50).

Then, the lenght of each piece is 7/50 meter.
First we have to find how much string we are going to cut into 5 pieces. We do this by taking 1/5 of 7/8 meter.

1/5 × 7/8 = 7/40

Now we have to subtract this from the original amount...

7/8 - 7/40 =
35/40 - 7/40 =
28/40 = 14/20 = 7/10

Now we divide this remaining string by 5 to find the length of the individual pieces...

7/10 ÷ 5 =
7/10 × 1/5 =

7/50 meter

8y - 3 = 6y + 17


Help me solve?

Answers

8y - 3 = 6y + 17
     +3           +3
8y = 6y + 20
-6y         - 6y
2y = 20 
/2     /2
y = 10

Minxia counted 40 green cars and 20 silver cars in the parking lot. If the number of green cars stays the same, how many more silver card would need to be added so the ratio of green cars to silver cars is 1 to 3?

Answers

The number of silver cars that need to be added will be 100.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

Minxia counted 40 green vehicles and 20 silver vehicles in the parking garage. On the off chance that the quantity of green vehicles remains something similar.

Let 'x' be the number of silver cars that need to be added.

If the ratio of green cars to silver cars is 1: 3. Then the number of silver cars that need to be added will be given as,

40 / (x + 20) = 1 / 3

Simplify the equation, then we have

40 / (x + 20) = 1 / 3

(x + 20) = 40 x 3

x + 20 = 120

x = 100

The number of silver cars that need to be added will be 100.

More about the ratio and the proportion link is given below.

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What I did is that: I multiply 40 by 3 because 40 is 1/3 and I have to find the answer for 3/3 (Confusing, sorry I don't know how to explain it correctly). I got 120, subtract 20 from 120 beacause ther is 20 silver cards. The answer is 100
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