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Stels [109]
3 years ago
13

To rewrite the expression ab+a+b+1, Jozelle first writes (ab+a) + (b+1). What property justifies this?

Mathematics
1 answer:
rodikova [14]3 years ago
7 0

Answer:

I believe it is associative property of addition or commutative

Step-by-step explanation:

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3a+11=7a-13 with shown work​
DaniilM [7]

3a+11=7a-13

move 7a to the other side

sign changes from +7a to -7a

3a-7a+11= 7a-7a-13( combine like terms)

3a-7a+11= -13

-4a+11= -13

move 11 to the other side

sign changes from +11 to -11

-4a+11-11= -13-11

-4a= -13-11

-4a= -24

divide both sides by -4 to get a by itself

-4a/-4= -24/-4

Answer: a= 6

4 0
4 years ago
at the sea park, one section in the stadium has 9 rows with 18 seats in each row. in the centre of each of the first 6 rows, 8 s
bonufazy [111]
10 seats are nonsplash zone

18-8=10 because there are 18 total seats and 8 splash zone seats just subtract them Hope this helped :)
7 0
3 years ago
Read 2 more answers
a local library shows movies on Thursday evening.the library administrator has chosen the next 6 movies he will show , but he ha
Natali [406]
For the first movie he has 6 choices, then for the second since he has chosen the first there are only 5 left, then for the third there are only 4 choices left and so on.

Therefore the answer is 6!=6*5*4*3*2=720 orderings
7 0
4 years ago
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"The sum of one-third of a number and 4 is 7. What is the number? "
Whitepunk [10]

Answer:

7-4= 3

one-third of 9 is 3

so the answer would be one-third of 9

Step-by-step explanation:

one-third of 9 is 3

3+4=7

7 0
3 years ago
Read 2 more answers
Crystals fitness center offers yoga classes for $12 per class and sells yoga mats for 19.95. Dana's fitness center offers yoga c
vladimir1956 [14]

Answer:

12x+19.95=13x+9.95

19.95=x+9.95

10=x

So after 10 classes the cost will be the same

12(10)+19.95=120+19.95= $139.95

13(10)=9.95=130+9.95= $139.95

5 0
3 years ago
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