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lilavasa [31]
3 years ago
7

Three U.F.O.'s were constructed in consecutive years. Their ages have a sum of

Mathematics
1 answer:
Dahasolnce [82]3 years ago
7 0

Answer: 41, 42, and 43 years old.

Step-by-step explanation:

41 plus 42 plus 43 = 126.

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A square part of side 20 meters has a footpath along the boundary of width 10 meters . Find the area of path
qaws [65]

Answer:

Answer: 84 meters squared. (i.e. 84m^2).

Step-by-step explanation:

Area of the path = total area of path and plot - plot area only

First, let’s find the area of the plot:

20m x 20m = 400m^2

The path is 1m wide and runs all the way around, so, it describes an ‘outer square’ of 22m x 22m (2 x 1m larger because there are 1m of the path on each side).

The area of this ‘outer square’ is equivalent to the ‘total area of path and plot’

22m x 22m = 484m^2

So:

Area of the path = total area of path and plot - plot area only

= 484 - 400 = 84m^2

4 0
2 years ago
What is the percent of increase from 40.2 to 98.9?
alekssr [168]

Answer:

146%

Step-by-step explanation:

To find the percent increase/decrease:

1. Subtract the original value from the new value.

2. Divide by the original value.

3. Multiply the decimal by 100 to convert to a percent.

98.9 - 40.2 = 58.7

58.7/40.2 = 1.46

1.46*100 = 146%

8 0
3 years ago
1. Twelve years ago, your grandma put money into a savings account for you that earns 7.5% interest annually and is
dedylja [7]

Answer:

23,817$

Step-by-step explanation:

And you will have earned 13,817 in interest.

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2 years ago
In a class of 40 students 75% wore shorts today how many students wore shorts?​
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Armando is baking 36 batches of brownies for the bake sale. Each batch of brownies takes 1 1/15 cups of flour. What is a reasona
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Step-by-step explanation:

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