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Minchanka [31]
3 years ago
14

X+y=3 x-3y= -29 Solve the system by using the elimination method

Mathematics
1 answer:
Sindrei [870]3 years ago
3 0

Answer:

x= 16

y= -13

Step-by-step explanation:

x+y=3

x-3y=-29

Eliminate x and subtract the equations

2y=-26

y= -13

Plug in y for first or second equation

x=16

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Tickets to a movie cost $7.25 for adults and $5.50 for students a group of friends purchased 8 tickets for $52.75 how many adult
irina1246 [14]

Answer:

The number of adults tickets and student tickets purchased is 5 and 3.

Given that,

Tickets to a movie cost $7.25 for adults and $5.50 for students.

A group of friends purchased 8 tickets for $52.75.

Here we assume the no of adult tickets and no of student tickets be x and y.

Based on the above information, the calculation is as follows:

7.25x + 5.50y = 52.75 .............(i)

x + y = 8

x = 8 - y..................(2)

Now put the x value in the equation (1)

So,  

7.25(8-y) + 5.50y = 52.75

7.25 × 8 - 7.25y + 5.50y = 52.75

58 - 1.75y = 52.75

5.25 = 1.75y

y = 3

So,  

x = 8 - 3

= 5

Therefore we can conclude that the number of adults tickets and student tickets purchased is 5 and 3.

-Hope this helps<3

4 0
2 years ago
What is the approximate area of a 70 decree sector of a circle with a radius of 8 inches
puteri [66]
The area of the sector will also be 70/360
Sector area = 70/360 • pir^2
= 7/36 • pi • 8^2
A= 112/9 • pi
A= 39.1 inch^2
3 0
3 years ago
Madeleine owes $36,000 to a private lender. The debt grows with 12% annual interest that compounds every week. How much will Mad
viva [34]

Answer:

A= $40584.28      

Step-by-step explanation:

P = 36000

r = 12% = 0.12

n = 52 weeks

t = 1

A = P(1 + \frac{r}{n})^{nt}\\

   =36000(1 + \frac{0.12}{52})^{52 \times 1}\\\\=36000 (1.002307)^{52}\\\\=36000 \times 1.12734\\\\=40584.28

7 0
3 years ago
Can someone help me with a problem?
Kobotan [32]

Answer:

D

Step-by-step explanation:

5 0
3 years ago
The star Alpha Centauri is approximately 40653230000000 kilometres from earth,write this number in standard form to 3 significan
almond37 [142]
4.065323 × 10^13
Hope this helps!
Vote me Brainliest!
8 0
3 years ago
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