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3 years ago

How do you simplify 2xy+3ab-4xy-9ab. Show how you did it

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

8 0

2xy+3ab-4xy-9ab
2xy-4xy 3ab-9ab
-2xy -6ab

answer = -2xy-6ab

DENIUS [597]3 years ago

7 0

2xy+3ab-4xy-9ab
First you wanna find like terms
Like 2xy and -4xy they have the same letters
SO do 2xy-4xy and you should a negative number like -2xy make sure after you subtract you and the letters one the number
Now do 3ab and -9ab the same way i did it with the other like terms you subtract and should get -6ab so after you gotten both of thoss solved you should have the expression
-2xy-6ab
Hope this helped :)

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- x - x + 11 - 2x = 83 please show step by step!!

m_a_m_a [10]

Answer:

$x=-18$

Step-by-step explanation:

Given

$-x-x+11-2x=83$

Step 1: Combine Like Terms on LHS

$-x-x+11-2x=83\\-2x+11-2x=83\\-4x+11=83$

Step 2: Subtract 11 on both sides

$-4x+11=83\\-4x+11-11=83-11\\-4x=72$

Step 3: Divide both sides by -4 to isolate the x-variable

$-4x=72\\\\\frac{-4x}{-4}=\frac{72}{-4}\\ \\ x=-18$

Final Answer

$x=-18$

7 0

2 years ago

Read 2 more answers

I have 2 mor quizzes of this assiment day 1 of trying to start 9th grade language arts

Scilla [17]

The change in temperature is -28°F

So, Option D is correct.

Step-by-step explanation:

Temperature at day time = 72°F

Temperature at night = 44°F

What number represents the change in number?

Change in temperature = Temperature at night - Temperature at Day

Change in temperature = 44°F-75°F

Change in temperature = -28°F

The change in temperature is -28°F

So, Option D is correct.

Keywords: Solving Expressions

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3 0

3 years ago

Bill measures the circumference of a circular fish pond to be 28 ft. What is the diameter of the fish pond, rounded to the neare

zalisa [80]

It would be 9 ft. using the knowledge of $\pi$ times the diameter ( $\pi$ equals aprox. 3.14) equal the circumference of a circle, and since we know the circumference, we need to divide that by $\pi$ to get the diameter.

equation: 28/3.14=8.913
rounding that would bring it to 9 ft.

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3 years ago

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Trava [24]

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3 years ago

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rusak2 [61]

Answer:

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