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babymother [125]
3 years ago
12

Which expression is equivalent to 21x + 9 - 3x? A. 9(2x - 1) B. 9(x + 1) C. 9(2x + 1) D. 18(x + 1) ​

Mathematics
2 answers:
azamat3 years ago
6 0

Answer: A. 9(2x - 1)

Step-by-step explanation:

combine like terms

21x+9-3x

21x-3x

18x+9

Factor the expression

factor out 9 from the expression

you get 9(2x - 1)

Mazyrski [523]3 years ago
4 0

Answer: C

Step-by-step explanation:

21x+9-3x = 18x + 9

If you factor out the 9, you would be left with

9 (2x+1)

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What type of transformation takes the graph of f(x)=|x| to the graph of g(x)=−3+|x|?
crimeas [40]

Answer:

vertical translation of 3 units down

Step-by-step explanation:

we have

f\left(x\right)=\left|x\right| ----> the parent function

The vertex of f(x) is the point (0,0)

g\left(x\right)=-3+\left|x\right| ----> the transformed function

The vertex  of g(x) is the point (0,-3)

so

The rule of the translation is

f(x) -----> g(x)

(0,0) ----> (0,-3)

(x,y) ----> (x,y-3)

That means ---> The translation is 3 units down

see the attached figure to better understand the problem

7 0
3 years ago
Maya has 5 over 6 cup of ice cream. How many 1 over 4 -cup servings are in 5 over 6 cup of ice cream?
Drupady [299]
The answer is c because it’s not a or d and maybe not b so ye c
6 0
3 years ago
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Zip codes for the Houston area are five digit numbers with 7 as the first 2 digits of each zip code. The third digit can be 0, 3
djyliett [7]

Answer:

There are 400 possible zip codes in the Houston area

Step-by-step explanation:

Here, we want to calculate the possible number of zip codes in the Houston area

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For the third digit, we are selecting 1 number out of 0,3,4 or 5

This means 4 C 1

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The first will be 10 C 1 and the second last digit too is 10 C 1

So the number of possible zip codes will be;

4 C 1 * 10 C 1 * 10 C 1

= 4 * 10 * 10 = 400 possible zip codes

6 0
3 years ago
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alexdok [17]
2*10^8
the exponent would be 8
hope this helps!
4 0
3 years ago
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Irina-Kira [14]
I think the answer is 5 because you add the 1/2 and the other 1/2 leave the for alone that will give you 5 Example: 1/2+1/2=1+4=5
8 0
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