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Studentka2010 [4]
3 years ago
9

7 + (a+b) = (7+a) +b what is the property

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

Associative property of addition

Step-by-step explanation:

To “associate” means to connect or join with something. According to the associative property of addition, the sum of three or more numbers remains the same regardless of how the numbers are grouped.

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Find the Length of AC. Round answers to the nearest hundredth (2 decimal places)
lara31 [8.8K]

Answer:

32.78

Step-by-step explanation:

Assuming that we have two right triangles joined together, with one having adjacent side a, with a side of 12 ft opposite reference angle 30°, and the other one having adjacent side b, with a side of 12 ft opposite reference angle 45°. Thus, a + b = length of AC.

Let's find a and b.

Finding a:

Reference angle = 30°

Opp = 12 ft

Adj = a

Using trigonometric ratio formula, we have:

tan(30) = 12/a

Multiply both sides by a

a*tan(30) = 12

Divide both sides by tan(30)

a = 12/tan(30)

a = 20.78 (nearest hundredth)

Finding b:

Reference angle = 45°

Opp = 12 ft

Adj = b

Using trigonometric ratio formula, we have:

tan(45) = 12/b

Multiply both sides by a

b*tan(45) = 12

Divide both sides by tan(45)

b = 12/tan(45)

a = 12

Length of AC = 20.78 + 12 = 32.78

5 0
3 years ago
I NEED HELP PLEASE, THANKS! :)
saw5 [17]

Hey there! :)

Answer:

First option: As x⇒ ∞ f(x) ⇒ -∞.  As x⇒ -∞ f(x) ⇒ ∞.

Step-by-step explanation:

Rearrange the equation:

f(x) = -x³ - 2x² + 1

This is a negative cubic function. The function decreases over the interval

(-∞, ∞). Therefore:

As x⇒ ∞ f(x) ⇒ -∞.

As x⇒ -∞ f(x) ⇒ ∞.

This is the first option.

4 0
3 years ago
The slope of a line can be stated many ways if not put into simplest form.
dolphi86 [110]
Your answer is true , it can be stated by putting it into simplest form
8 0
3 years ago
How can I solve |2x - 5| = 4?
Ray Of Light [21]

well, you already know an absolute value expression has a ± siblings, so let's proceed without much fuss.


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4 0
3 years ago
The length of a ribbon is 8 meters it is cut into 6 equal pieces how long is each piece HELP
Serggg [28]

8 meters divided by 6 is

1.3 meters

4 0
3 years ago
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