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Oduvanchick [21]
4 years ago
8

How are addition properties and subtraction rules helpful when solving problems

Mathematics
1 answer:
Juli2301 [7.4K]4 years ago
7 0
If you didn't add, you wouldn't know the answer to much money you had if you did for example, 10+30=???
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I need help asap plz I will mark branlist
Nesterboy [21]
1) Mean= Sum of total Observation/ Total no.of observation
Mean= 42/6=7
option (b) 7


2)To calculate Median first arrange the numbers in a numerically ascending order.

Since, there are even no.of total Observation median will be the mean of two middlemost terms.

3,6,7,9,9,10

Middle terms are 7 and 9
Median= 7+9/2= 8

option(c) 8
7 0
3 years ago
Prove the identity. sin(−θ) cot(−θ) = cos θ
gayaneshka [121]
Hello :
 sin(−θ) = - sin(θ)
 cot(−θ) = - cot(θ)
cot(θ) = cos(θ)/sin(θ)
sin(−θ) cot(-θ) = (- sin(θ))×(-cos(θ)/sin(θ)) = cos(<span>θ)</span>
4 0
3 years ago
A rectangle has an area of 20 square units. What can be said of its height and width? Check all that apply.
Dovator [93]

Answer:

The area of the rectangle is defined as

Area = height* width

Area = 20 u^2  

This means that any multiplication between two numbers which results in the value 20, can be the either the width or the height.

For example, suppose the width and the height are integers.

The possible combination for the pair of values are

1 & 20

2 & 10

4 & 5

With either number being the height or the width

.

6 0
3 years ago
Karen's mom is filling 12 birthday hats with candy for her birthday party. Each hat is shaped like a cone with a height of 6 inc
KatRina [158]

The volume of each birthday hat is 56.55 in³ and the 12 hats has a total volume of 678.58 in³

<h3>What is volume?</h3>

Volume is the amount of space occupied by a three dimensional shape or object.

The volume of a cone is given by:

volume = (1/3) * π * radius² * height

The cone that has a height of 6 inches and a radius of 3 inches. Hence:

Volume = (1/3) * π * 3² * 6 = 56.55 in³

For 12 hats:

Volume = 12 *  56.55 in³ = 678.58 in³

The volume of each birthday hat is 56.55 in³ and the 12 hats has a total volume of 678.58 in³

Find out more on volume at: brainly.com/question/12410983

6 0
3 years ago
How does interest rate affect money earned on a savings account?
Fiesta28 [93]
The interest rate helps you grow your money even if you do not put any more money in the bank yourself.  For example, if your put $100 in an account that has 4% interested compounded daily, you would have $148 in a month.
8 0
4 years ago
Read 2 more answers
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