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galben [10]
2 years ago
15

Can anyone please help

Mathematics
1 answer:
lilavasa [31]2 years ago
3 0

Answer:

Adult tickets = $73.5

Child tickets = $20.5

Step-by-step explanation:

{ \rm{3x + 5y = 50 -  -  -  \{eqn \: 1 \}}} \\ { \rm{x + 5y = 31 -  -  -  \{eqn \: 2 \}}} \\

• Subtract eqn 2 from eqn 1:

{ \rm{2x = 21}} \\ { \rm{x = 10.5}}

{ \rm{10.5 + 5y = 31}} \\ { \rm{5y = 20.5}} \\ { \rm{y = 4.1}}

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I need help on how to solve the problem and the correct answer :)
lakkis [162]

This is a system of linear equations. First, you can add the two equations together to eliminate the y so that you can solve for x:

-5x + -7x = 0 + -96

-12x = -96

x = 8

Use x to solve for y:

-5 * 8 + 8y = 0

Add 40 to both sides and divide by 8:

y = 5

So, x = 8 and y = 5.

3 0
4 years ago
A recipe uses 7 parts of milk for every 5 parts of sugar how much sugar do you use when you use 28 cups of milk
stira [4]

Answer:

the answer is 20 cups of sugar

Step-by-step explanation:

7/28= 5/x

x= 20.

x reps the number of cups of sugar

7 0
3 years ago
3. There are 24 girls and 36 boys in Yuki's
Natasha2012 [34]

Answer:

a) 24:36 simplified: 2:3

b) 40%

c) 1%

Step-by-step explanation:

b) total people:

24 + 36= 60

24/60 = 0.4 40%

c) 1/60 = 0.01

01%

5 0
3 years ago
Which of the following figures has reflected over the y-axis? 40 POINTS! PLEASE ANSWER!
Sonja [21]

Answer:

the third one

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
*100 points* *Please help* *Spam reported*
Trava [24]

Answer:

8x + 12y = 360

x-intercept = 45

y-intercept = 30

Slope = -3/4

Step-by-step explanation:

To begin, let's start with what we know

8 vans + 12 buses = 360 student

If we have vans as the variable x, having an unknown amount of students, and buses as y, also an unknown amount of students, also making 360 a flat number, we will get the equation

8x + 12y = 360

With this equation, we can find the y-intercepts and x-intercepts

The y-intercept can be found when x = 0, so let's substitute that in

8(0) + 12y = 360

   12y / 12 = 360 / 12

             y  = 30

The x-intercept can be found when y = 0, so let's substitute that in

8x + 12(0) = 360

8x/8          = 360/8

x                = 45

So, the x-intercept is 45 and the y-intercept is 30.

Next, let's find the slope. We can solve this easily by isolating y and finding the coefficient of x

8x + 12y = 360

-8x                    -8x

       12y = 360 - 8x  

12y / 12 = (360 - 8x) / 12

          y  = 30 - 3/4x

The coefficient of x is -3/4, so the slope will be -3/4

If you have any questions, please let me know in the comments! If you could mark this answer as the brainliest, I would greatly appreciate it!

4 0
3 years ago
Read 2 more answers
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