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tangare [24]
3 years ago
12

11. Identify the properties below. a. 5 + 6 = 6 + 5 b. 7 + (3 + 9) = (7 + 9) + 3

Mathematics
1 answer:
jenyasd209 [6]3 years ago
5 0
A is commutative property
B is associative property
Explanation:
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What is the difference in the surface area of two cubes, one with edge 15 and one with an edge of 12
Lilit [14]

Remark

A cube has six sides, all of them equal. The formula for 1 side is s^2. The formula for all six = 6s^2.


Step One

Find the surface area of the larger cube.

Area = 6 *s^2

s = 15

Area = 6 *15^2

Area = 6 * 225

Area = 1350


Step Two

Find the area of the smaller cube

Area = 6s^2

Area = 6 * 12^2

Area = 6 * 144

Area = 864


Step Three

Find the difference

Area1 - Area2 = difference

1350 - 864 = 486

The difference is area = 486 units^2 <<<<< Answer


There is a slightly shorter way. Take out the common factor of 6

Difference = 6 * (15^2 - 12^2)

Difference = 6 * (225 - 144)

Difference = 6 * (81)

Difference = 486

6 0
3 years ago
Help, please (single variable calculus)
balandron [24]

Hi there!

\large\boxed{ 14.875}

Our interval is from 0 to 3, with 6 intervals. Thus:

3 ÷ 6 = 0.5, which is our width for each rectangle.

Since n = 6 and we are doing a right-riemann sum, the points we will be plugging in are:

0.5, 1, 1.5, 2, 2.5, 3

Evaluate:

(0.5 · f(0.5)) + (0.5 · f(1)) + (0.5 · f(1.5)) + (0.5 · f(2)) + (0.5 · f(2.5)) + (0.5 · f(3)) =

Simplify:

0.5( -2.75 + (-3) + (-.75) + 4 + 11.25 + 21) = 14.875

7 0
3 years ago
Place each number on the number line. Use the number line to round the numbers to the nearest 1,000
artcher [175]
Where is the number line
5 0
2 years ago
Which number is NOT in the solution set of the inequality x &lt; 15?
Mrrafil [7]

Answer: it is 15

Step-by-step explanation:

4 0
3 years ago
Yesterday liam used 20 stripped marbles to fill bags. how many non-stopped marbles did he used to fill up the bags?
777dan777 [17]
The answer is 30 because i had this on a test
5 0
3 years ago
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