1/3 + 1/5 step by step

Mathematics

2 answers:

ella [17]3 years ago

8 0

Answer:

8/15

Step-by-step explanation:

the denominators are different so you need to find the lowest common multiple which is 15

you times 3 by five so you have to change the 1 into 5

you times 5 by three so you have to change the other numerator to 3

so it becomes:

5/15 + 3/15= 8/15

Lerok [7]3 years ago

6 0

Answer:

8/15

Step-by-step explanation:

Here,

1/3 + 1/5

LCM of denominator = 15

1/3 × 5/5 + 1/5 × 3/3

= 5/15 + 3/15

= 8/15 ans

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31,50 is 42% os what number

sergeinik [125]

$\frac{31,50}{x}=\frac{42}{100}$

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.

$\frac{31.50}{x} = \frac{42}{100}\\\\cross\ multiply\\\\31.50\times100=3150\\42\times x=42x\\\\3150=42x\\x=75$
Your answer is 75.

3 0

3 years ago

A 4 foot tree was planted in 2012 outside a high school. The tree grew continuously by 22% each year from that point. Find out w

Brut [27]

Answer:

The height of the tree in 2020 was of 19.63 feet.

Step-by-step explanation:

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The exponential equation for the growth of an amount has the following format:

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