All categories

3 years ago

Which expressions are equivalent to 3(x + 3y + 2x − y)?

Mathematics

2 answers:

Irina-Kira [14]3 years ago

8 0

3(x + 3y + 2x − y) = 3(3x + 2y)
= 9x + 6y
See if any of these match an answer option.

VikaD [51]3 years ago

3 0

Use distributive property, and simplify like terms.

3(x + 3y + 2x - y)
= 3(x) + 3(3y) + 3(2x) + 3(-y)
= 3x + 9y + 6x - 3y
= 9x + 6y

Therefore, 9x + 6y is equal to 3(x + 3y + 2x - y)

Also, 9x + 6y can be factored into 3(3x + 2y).
3(3x + 2y)
= 3(3x) + 3(2y)
= 9x + 6y

So this pair is equivalent: 3(3x + 2y) and 9x + 6y

You might be interested in

If the measure of an angle is 38 degrees, find the measure of its complement.

Norma-Jean [14]

Answer: 52 degrees

Explanation:
For this problem, we must know that the complement of an angle is the measure of which will make a 90 degree sum.

So in this problem we simply solve the equation as follows:

38 + x = 90
x = 90 - 38
x = 52

Hence the complement of 38 is 52.

Cheers.

6 0

1 year ago

maksim [4K]

Answer: Option 'C' is correct.

Step-by-step explanation:

Since we have given that

Polygon X is similar to polygon.

And Polygon X is three times the size of polygon Y.

So, it becomes,

$\dfrac{\text{Perimeter of polygon X}}{\text{Perimeter of polygon Y}}=\dfrac{3}{1}\\\\\dfrac{81}{x}=\dfrac{3}{1}\\\\x=\dfrac{81}{3}\\\\x=27$

Hence, perimeter of polygon Y is 27.

Therefore, Option 'C' is correct.

5 0

2 years ago

Read 2 more answers

I need to know what 11, 14, and 15 are I don't remember how to do it

almond37 [142]

When you reflect a function in the x-axis, the first coordinate of a point stays the same, and the second coordinate changes sign (what was positive is now negative and vice versa). See the attached picture.

Question 11: f(x) = -5x + 2. The function changes to its opposite, so g(x) = -(-5x + 2) = 5x - 2.

When you reflect a function in the y-axis, the first coordinate of a point changes to its opposite, but the second coordinate stays the same. Replace x with -x .

Question 14: f(x) = |2x - 1| + 3. Replacing x with -x produces g(x) = |2(-x) - 1| + 3 which simplifies to g(x) = |-2x -1| + 3.

Question 15 works the same way as #14.

6 0

2 years ago

Which of the following is a polynomial with roots 3, 5i, and −5i?

jek_recluse [69]

$x_{1}=3 \\ \\ x_{2}=5i \\ \\ x_{2}=-5i \\ \\ f(x)=(x-x_{1})(x-x_{2})(x-x_{3})=(x-3)(x-5i)(x+5i)= \\ \\ =(x-3)(x^{2}+25)=x^{3}+25x-3x^{2}-75=x^{3}-3x^{2}+25x-75$

==================================

"Associate with people who are likely to improve you."

6 0

2 years ago

Erin writes the set of ordered pairs below. The set represents a function.

sukhopar [10]

Answer:

A,B,

Step-by-step explanation:

A function cannot have the same x values but can have the same y values.

Is D supposed to be (-1,7) by the way? If it is the answer will be A,B,D.

If this answer has helped you please mark as brainliest

5 0

2 years ago

Read 2 more answers