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sergeinik [125]
3 years ago
13

What is the sum? 2/5 + 7/15

Mathematics
1 answer:
sashaice [31]3 years ago
8 0

Answer:

13/15

Step-by-step explanation:

You need to make the denominators of both equations the same

to do this multiply the numerator and denominator of the fraction 2/5 by 3

this gives you 6/15

add the numerators together and keep the denominators the same

your answer is 13/15

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Question: A square with sides of length 5 is positioned inside a square with sides of length 7. What is the total area between t
Sergio [31]

Answer:

The total area between the squares is of 24 units squared.

Step-by-step explanation:

Area of a square:

The area of a square of side length l is given by:

A = l^2

Area between figures:

The area between two figures is the area of the larger figure subtracted by the area of the smaller figure.

Larger square:

Square with side of length 7. So

A_l = 7^2 = 49

Smaller square:

Square with side of length 5. So

A_s = 5^2 = 25

What is the total area between the squares? ​

T = A_l - A_s = 49 - 25 = 24

The total area between the squares is of 24 units squared.

6 0
3 years ago
mr martin has 36 calculators in a box. The ratio of the ordinary calculators to the scientific 5:1. How many of each calculator
andre [41]

Answer:

180 calculators.

Step-by-step explanation:

She has 180 calculators because if you were to un - simplify 5:1 you would get 180:5 and you would use the first number. So, you have 180 calculators.

Sorry if this is wrong I tried my best.

8 0
3 years ago
Hope's watch gains 8 minutes every 2 hours. How much time will it gains in ; a) 12 hours b) 13 hours​
prisoha [69]

Answer:

A = 48, and B = 52

Step-by-step explanation:

Simplify 8 = 2 hours to 4 = 1 hour, then multiply 4 times 12 to get the answer to a. The answer to b would be multiplying 4 times 13.

3 0
3 years ago
what is the lateral area of a square pyramid with a side length of 11.2 centimeters and slant height 20 centimeters
hammer [34]
Lateral sides consiste of 4 congruentisosceles triangle 
lateral area 

= 4 * 0.5 * 11.2 * 20
=   448 cm^2
4 0
3 years ago
How do you turn 5/2 into 10/4?
o-na [289]
That’s easy. To turn 5/2 into 10/4 you multiply by 2. :D Hope this helps!
3 0
3 years ago
Read 2 more answers
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