MATHEMATICS MIDDLE SCHOOL

7/8 - 1/3 =

Reduce to lowest terms.
please help
thank you

Answers

Answer 1
Answer:

Here is your answer:

7 × 3 = 21

8 × 3 = 24

-

1 × 8 = 8

3 × 8 = 24

21 - 8 = 13

= 13/24 (since how 13 and 24 cannot be reduce)

Hope this helps!

~Nonportrit
Answer 2
Answer:

Hey there!

First, we need to bring 7/8 and 1/3 to have the same denominator (we do this so we will be able to subtract easier).

To do that all you will need find a number, both 3 and 8 go into, or multiply them, (the closest to those numbers), this would be 24. The work is shown below:

7/8 times 3/3 is 21/24

1/3 times 8/8 is 8/24

Therefore this is the same equation.

Solve.

21/24 - 8/24 = 13/24

This cannot be simplified.

So, your answer is 13/24.

Hope this helps, and sorry if I was confusing!

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There were 24 boys and 20 girls in a chess club last year. This year the number or boys increased by 25% but the number of girls decreased by 10%. Was there an increase or decrease in overall membership?

Answers

original=24+20=44
ok so find increase and decrease
25%=1/4
10%=1/10

24 TIMES 1/4=6
increase by 25%
24+6=30

girls decrease by 1/10
20 times 1/10=2
20-2=18

38+18=48
48>44
increase
There was an increase in the overall membership

Should you use centimeters or inches to measure a desktop

Answers

Inches 

centimeters would be too small 

Good luck!
Inches cause a desktop is big and inches are bigger than centimeters

The following data points represent the number of points scored last basketball game by each player on the Dragons basketball team.5,8,11,7,?

If the mean of the data set is 8 points, find the missing number of points.

Answers

Answer:

9

Step-by-step explanation:

There are 5 data points.  To find the mean, we add the data and divide by 5

(5+8+11+7+?) /5 = 8

Multiply each side by 5

(5+8+11+7+?) /5 *5 = 8*5

(5+8+11+7+?)  = 40

Combine like terms

? + 31 = 40

Subtract 31 from each side

? +31-31 = 40-31

? = 9

The missing number is 9
The missing number is 9.

If triangle abc, a=3, b=5 and c=7. Find the measure of angle b

Answers

Answer:

b = 38.22

Step-by-step explanation:

In the given triangle ABC, a = 3, b = 5 and c = 7 is given.

We have to find the measure of angle b.

To get the measure of any angle we will apply cosine rule in the triangle.

b² = a² + c² - 2ac(cosb)

5² = 3² + 7² - 2×3×7×cosb

25 = 9 + 49 - 42×cosb

25 = 58 - 42cosb

-42cosb = 25 - 58 = -33

cosb = (33)/(42)

cosb = 0.7856

b= cos^(-1)(0.7856)

b = 38.22

b = 38.22 is the correct answer.

Answer:

β = arccos((a^2 + c^2 - b^2)/(2·a·c))

β = arccos((3^2 + 7^2 - 5^2)/(2·3·7)) = 38.21°

Can someone explain the steps of how to solve number 13 please!!

Answers

Answer:

-5/10

Step-by-step explanation:

change -4/5 to -8/10 so the denominator is the same.

since its minus negative the negative sign can be changed to a plus sign, so -8/10+3/10=-5/10

Please answer ASAP! An explanation is a MUST requirement in order to receive points and the Brainliest answer. Thank you.

Answers

I think the answer is the fourth option. If bv = 60, the that should be higher than b, especially when you mulyiply the factor of three in au.
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