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Anettt [7]
3 years ago
13

Choose all properties that were used to simplify the following problem:

Mathematics
2 answers:
Maslowich3 years ago
8 0

Answer:

additive identity

additive inverse

commutative property of addition

associative property of addition

Step-by-step explanation:

cupoosta [38]3 years ago
5 0

The properties 1‚ 2‚ 4‚ and 5. are used

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Help me please asap!
Blizzard [7]

4 · x^4 · x^4 · y

4 x^8 y

In words: four times x to the eighth times y

8 0
3 years ago
A rectangular retaining wall has an area of
Veronika [31]

Answer:

The height of wall is 3 feet and length of wall is 5 feet

Step-by-step explanation:

Given as :

The Area of retaining wall = 15 square feet

Let The width of wall = W feet

The Height of wall = ( W - 2 ) feet

Now, Area of Rectangle = Height  width

Or , 15 ft² = ( W - 2 ) ft × W ft

Or,  15 = W² - 2 W

Or,   W² - 2 W - 15 = 0

Or,  W² - 5 W + 3 W - 15 = 0

Or, W ( W - 5 ) + 3 ( W - 5 ) = 0

So , ( W - 5 ) ( W + 3 ) = 0

So, W = 5 , - 3

∴ The width of wall = W = 5 feet

And The Height of wall = ( W - 2 ) = 5 - 2 = 3  feet

Hence The height of wall is 3 feet and length of wall is 5 feet. Answer

8 0
3 years ago
Evaluate 12x2 + 39x + 30 at x = 3.
ycow [4]

Answer:

255

Step-by-step explanation:

12x^(2) + 39x + 30

x = 3

Substitute in"3" for "x" and solve;

12(3)^(2) + 39(3) + 30

= 12 * 9 + 117 + 30

= 108 + 117 + 30

= 255

3 0
3 years ago
Read 2 more answers
Create your own word problem that results in a negative integer
mestny [16]

Answer:

In Buffalo, New York, the temperature was -14°F in the morning. If the temperature dropped 7°F, what is the temperature now?

Step-by-step explanation:

You just need to get a situation where there would be negative increase. My example was temperature, but other easy examples could be money (debt, etc) or sea level.

4 0
3 years ago
Which table represents the equation Y equals 3X
Alik [6]

Answer:

who added letters into math we already have readingggg

5 0
3 years ago
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