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3 years ago

Where do I put the parentheses in 15-3x4+9=12

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

7 0

Answer:

It varies but this is one example

15 - (3 x 4) + 9 = 12

plz mark as brainliest

aivan3 [116]3 years ago

6 0

Answer:

That depends on which operations you want to do first. The order of operations affect to outcome of the equation.

In this case:

15 - (3 x 4) + 9 = 12

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The school that Jennifer goes to is selling tickets to a play. On the first day of ticket sales the

sweet [91]

Answer:

Adult ticket = $11

Children ticket = $9

Step-by-step explanation:

Let the price of adult tickets be x and let the price of children's ticket be y

For the first day, the equation of sales can be put as

3x + 12y = 141..........1

For the second day, the equation of sales can be put as:

13x + 6y = 197............2

We then take these two equations together and solve simultaneously.

3x + 12y = 141.......1

13x + 6y = 197........2

Solving by elimination method, we Multiply through equation 1 by 13 and multiply through equation 2 by 3.

39x + 156y = 1833.........3

39x + 18y = 591..............4

Then subtract equation 4 from equation 3

138y =1242

y = 9

Substitute "y=9" into equation 1 to find x

3x + 12(9) =141

3x + 108 = 141

3x = 141 - 108

3x = 33

x = 11

Hence,

Price of adult ticket = $11

Price of children ticket = $9

6 0

3 years ago

34.

erastovalidia [21]

The fourth one is correct,

Develop a question

State a hypothesis.....

6 0

3 years ago

If a rectangle has a perimeter of 56 inches and a width of 8 inches,what is the area

Alika [10]

Answer:

160 inches

Step-by-step explanation:

Area = L times W

In a rectangle, there are 4 sides

2 are width

2 are length

56 is total

8 + 8 = 16

56 - 16 = 40

40 is what is left for the 2 length sides

since there are 2 sides and they need to be equal, we divided 40 by 2

40 / 2 = 20

the length of one side is 20

area = 8 times 20

a = 160 inches

4 0

4 years ago

7 10 of your friends prefer to take a math test on friday. 7 20 prefer friday and wednesday. what fraction of those who prefer f

liberstina [14]

Answer:

the answer is a

Step-by-step explanation:

5 0

4 years ago

Chanel is renting a digital video recorder from a cable supplier for a start up fee of $45 plus $5 per month. She has a budget o

Norma-Jean [14]

Fixed Cost = $45
Monthly Cost = $5

----------------------------------------
Define x:
----------------------------------------
Let x be the number of months she can rent.

----------------------------------------
Construct Inequality:
----------------------------------------
45 + 5x ≤ 250

----------------------------------------
Solve x :
----------------------------------------
45 + 5x ≤ 250
5x ≤ 250 - 45
5x ≤ 205
x≤ 41

--------------------------------------------------------------------------------
Answer: She can rent for a maximum of 41 months.
--------------------------------------------------------------------------------

5 0

4 years ago