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Solnce55 [7]
3 years ago
12

-2x + 9x What is the answer

Mathematics
2 answers:
Verdich [7]3 years ago
8 0

Answer: +7x

Step-by-step explanation: Since both terms contain an <em>x</em>, you can add them together by simply adding their coefficients. Coefficients are just your number in front of your variables. So if -2 + 9 = +7, -2x + 9x = +7x.

Blababa [14]3 years ago
7 0

Answer: 7x

<u>Remove "x" and add</u>

-2 + 9 = 7

<u>Add "x" back</u>

7 -----> 7x

Note: When adding/subtracting problems like these remove "x" and then add/subtract normaly. When you get your answer put x back.

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A tissue sample is three cells thick. Each cell has a thickness of 0.000004m. What is the thickness of the tissue sample in mm.
Sindrei [870]

Answer:

4000 nm

Step-by-step explanation:

Conversion from meters to nanometers: 1 meter is 1(10⁹) nm

Step 1: Convert 0.000004 to scientific notation

0.000004 = 4(10⁻⁶)

Step 2: Convert by multiplication

4(10⁻⁶) x 1(10⁹) = 4000 nm

8 0
2 years ago
Solve for R. 3 + 3r &gt; 9
Nostrana [21]

Answer:

r > 2

Step-by-step explanation:

9-3 = 6

6/3 = 2

Have a good day :)

7 0
3 years ago
This questionn please
nasty-shy [4]
Let X be the total number of guests
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(17+828)/36
845/36=23.5
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pls mark as brainliest
8 0
2 years ago
Alex has a collection of sports cards. There are 10 cards in the collection, and 1/5 of them are hockey cards. Alex decides to d
Alborosie
If 1/5 of the cards are hockey cards, there are 2 hockey cards. if he wants to double that amount, he would multiply it by 2, so 2•2=4. The fraction of hockey cards is now is 2/5.
4 0
2 years ago
State the degree of the polynomial
Orlov [11]
The degree is found  from the term with highest number of exponents
Thats 7x^4 y^7

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3 years ago
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