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kifflom [539]
3 years ago
12

1/4 + 3/7 pls answer w workings out aswell!! thanks

Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
6 0
Your answer is 19/28

First you find common denominators

1/4 and 3/7 both have 28 as a common denominator

Multiply the denominators to get the same denominator 1/4 by 7= 7/28 and 3/7 by 4= 12/28

Add that and you get 19/28 and it stays like that because you can’t simply it
xenn [34]3 years ago
3 0

Answer:

1/4 + 3/7 = 19/28

Step-by-step explanation:

Step 1: Find common denominator

Common denominator of 7 and 4 is 28 (since 7 × 4 = 28)

Step 2: Multiply fractions by the factor (equivalent to 1) that will bring each denominator to 28

1/4 × 7/7 = 7/28

3/7 × 4/4 = 12/28

Step 3: Simply add the newly-converted fractions

7/28 + 12/28 = 19/28

This fraction cannot be simplified, so the final answer is 19/28.

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Find the perimeter use 3.14
Alex777 [14]
Hey,
So we have to solve this in multiple steps. Step 1 is to find the circumference of the semi-circle and multiply by three since there are three. Step 2 would be to find the perimeter of the rectangle.  Step 3 would be to add those two together.

Step 1: To find the circumference of the semicircle use the formula pi (3.14) times radius (8 ÷ 2 = 4) times 2. After that we will divide by two since there is only half. After that we will multiply that answer by three.
C = 3.14 x 4 x 2
C = 12.56 x 2
C = 25.12

C = 25.12 ÷ 2
C = 12.56

Perimeter = 12.56 x 3 = 37.68

Step 2: To find the perimeter of the rectangle/square add all the sides (8).
Perimeter = 8 + 8 + 8 + 8 = 32

Step 3: Now add the two previous answers to get the final perimeter.
37.68 + 32 = 69.68

Final Answer: 69.68
Hope this helped!

Cheers,
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