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qaws [65]
3 years ago
10

Please help . I’ll mark you as brainliest if correct

Mathematics
1 answer:
Alisiya [41]3 years ago
5 0

Answer:

36

Step-by-step explanation:

x+x-21=51

2x-21=51

2x=30

x=15

15+21=36

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Can someone help please help sorry I know it’s easy but ......
NARA [144]

Answer:

standard

Step-by-step explanation:

4 0
3 years ago
My math teacher gave me this problem, what is p+7=-9
marshall27 [118]

P = -16

Subtract 7 from both sides to isolate the variable.

3 0
3 years ago
But The aquarium charges $12 per ticket for adults and $5per ticket for children. A group of 90 children and adult chaperones vi
White raven [17]

Answer:

There were 76 childrens and 14 adults.

Step-by-step explanation:

Since the group has a total of 90 children and adults, then the sum of the number of adults with the number of children must be equal to 90 as shown below:

children + adults = 90

Since the total cost for their tickets was 548 then the number of children multiplied by the price of their ticket summed by the number of adults multiplied by the price of their ticket must be equal to that. We have:

5*children + 12*adults = 548

With these two equations we have a system of equations shown below:

children + adults = 90

5*children + 12*adults = 548

In order to solve this we will multiply the first equation by -5, and sum both equations we have:

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children + 14 = 90

children = 90 - 14 = 76

There were 76 childrens and 14 adults.

7 0
3 years ago
Find the slope of the line graphed
Marrrta [24]

Answer:

Slope = -1.5

Step-by-step explanation:

The two points are: (1, 1) and (3, -2)

Slope = (-2 - 1) / (3 - 1)

Slope = -1.5

3 0
3 years ago
Read 2 more answers
What is the value of y in the figure if x = 30°?<br> y =
QveST [7]

Answer:

y is 150

Step-by-step explanation:

a straight angle always measures 180 degrees. if x is 30, the simply minus 30 from 180. that should give u 150 which is your answer.

hope this helped!

7 0
2 years ago
Read 2 more answers
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