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2 years ago

What is the solution to {2x +3y=11 and 3x+3y=18

Mathematics

1 answer:

ra1l [238]2 years ago

5 0

Answer:

The ordered pair that satisfies the equation is (7, -1)

Step-by-step explanation:

In order to find this, we can solve by subtracting. Start by stacking the two equations on top of one another and subtracting like terms.

3x + 3y = 18

(-) 2x + 3y = 11

--------------------

x = 7

Now that we have the value for x, we can plug in to either equation to find y.

2x + 3y = 11

2(7) + 3y = 11

14 + 3y = 11

3y = -3

y = -1

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university theater sold 465 tickets for a play. ticket cost $23 per adult and $13 per senior citizen. if total receipts were $71

erik [133]

a=adult tickets

s = senior tickets

a+s=465 a = 465-s

23a + 13s = 7145

substitute in a = 465-a

23 (465-s) + 13s = 7145

distrubute

10695 - 23s +13s =7145

combine like terms

10695 - 10s = 7145

subtract 10695 from each side

-10s = -3550

divide by -10

s = 355

senior tickets sold 355

6 0

2 years ago

If 55% of the students in a certain college are female and there are 1,452 female students, what is the total number of students

Len [333]

Answer:

So 55% of an unknown number is 1452

Let this unknown number be n

Then 55% of n = 1452

We now solve for n

55% × n = 1452

55/100 × n = 1452

0.55 × n = 1452

n = 1452/0.55

n = 2640

Therefore there are 2640 students in the college

8 0

2 years ago

What is question 2 c?

adell [148]

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3 0

3 years ago

Whats 3642o x 3234d +99? :/

Rainbow [258]

Answer:

It's 5

Step-by-step explanation:

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2 years ago

Please help me with this math problem!!!

olchik [2.2K]

Answer:

A) 840 Miles

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Step-by-step explanation:

A) 350/24 = 14 miles per gallon

14 X 60 = 840 miles.

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2 years ago