4. Which property of operations is used to write 15x + 9 as 9 + 15x?

1 answer:

8 0

Solution: The commutative property of addition states that when two numbers are being added, their order can be changed without affecting the sum.

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Determine the length of the model.<br> -60 ft-<br> 1 in. = 8 ft<br> =

Stells [14]

Length of the model = 11.6 inch

3 0

3 years ago

Write the following polar equation in Cartesian coordinates:

maks197457 [2]

Remember that transformation between Cartesian and polar system are:
x=r*cos(α)
y=r*sin(α)
From this we can conclude that:
r=√(x^2 + y^2)

Using trigonometry transformations we can write:
r=sin(2α) = 2sin(α)cos(α)
Now we can multiply both sides with r^2:
r^3 = 2(r*sin(α))*(r*cos(α))

Now using some replacements we can write:
(x^2 + y^2)^(3/2) = 2*x*y

5 0

3 years ago

A pair of vertical angles have the measure of 2y + 5 degrees + 4y degrees what is the value of y

timama [110]

Answer:

The value of y s 2.5

Step-by-step explanation:

Vertical angles are always equal to one another. In this case, we can find the angles by setting the two values equal and solving algebraically.

2y + 5 = 4y

5 = 2y

2.5 = y

7 0

3 years ago

Which number produces an irrational number when multiplied by 1/3

MArishka [77]

We can simply observe that.

0.777... is rational, because it is a number with infinite but repeating decimal part.
1/3 is rational, because it's the division between two integers
$-\sqrt{16}=-4$ , so this is rational as well.