Question

8th Grade math help asap

Answer 1

A zoo train ride costs $4 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took the ride was 27, and the total money collected was $60. What was the number of children and the number of adults who took the train ride that day, and which pair of equations can be solved to find the numbers?

11 children and 16 adults
Equation 1: a + c = 27
Equation 2: 4a + c = 60
16 children and 11 adults
Equation 1: a + c = 27
Equation 2: 4a + c = 60
11 children and 16 adults
Equation 1: a + c = 27
Equation 2: 4a − c = 60
16 children and 11 adults
Equation 1: a + c = 27
Equation 2: 4a − c = 60

Answer 2

@kelliegirl33 what about this? lol

Answer 3

@JK14 you know it?

Answer 4

I think i can solve it i did this before

Answer 5

k thank you

Answer 6

I believe the answer would be the second equation: 16 children and 11 adults
Equation 1: a + c = 27
Equation 2: 4a + c = 60

Answer 7

Question, are you in K12 8th grade?

Answer 8

flvs 8th grade

Answer 9

florida virtual school

Answer 10

ohh cool i was born in florida

Answer 11

cool !!

Answer 12

could u help with another question?

Answer 13

Line A is represented by the equation given below:

x + y = 3

What is most likely the equation for line B, so that the set of equations has infinitely many solutions?

3x + 3y = 3
3x + y = 3
x + y = 9
3x + 3y = 9

Answer 14

sure i'll try

Answer 15

idk this one at all

Answer 16

i don't either but i'm guessing it will be 3x+y=3

Answer 17

k thanks

Answer 18

Katie and Pamela put some money into their money boxes every week. The amounts of money (y), in dollars, in their money boxes after certain amounts of time (x), in weeks, are shown by the equations below:

Katie
y = 30x + 20

Pamela
y = 20x + 90

After how many weeks will Katie and Pamela have the same amount of money in their money boxes, and what will that amount be?

6 weeks, $150
6 weeks, $230
7 weeks, $150
7 weeks, $230

Answer 19

last one i need help with

Answer 20

@kelliegirl33

Answer 21

@JK14

Answer 22

I don't know the answer

Answer 23

30x + 20 = 20x + 90
30x - 20x = 90 - 20
10x = 70
x = 7

y = 30x + 20 y = 20x + 90
y = 30(7) + 20 y = 20(7) + 90
y = 210 + 20 y = 140 + 90
y = 230 y = 230

7 weeks, $230

Answer 24

I WAS RIGHT :) thats what i put

Answer 25

thanks though

Answer 26

lol Good Job

Answer 27

A system of equations is shown below:

y = 8x − 2
y = 9x − 7

What is the solution to the system of equations?

(−5, 38)
(−5, −38)
(5, 38)
(5, −38)

Answer 28

give me a sec and tell me if im right

Answer 29

-5, 38?

Answer 30

close....
8x - 2 = 9x - 7
8x - 9x = -7 + 2
-x = -5
x = 5

y = 8x - 2
y = 8(5) - 2
y = 40 - 2
y = 38

(5,38)

Answer 31

dang almost but thanks your a huge help

Answer 32

The work of a student to solve a set of equations is shown:

Equation 1: m = 8 + 2n
Equation 2: 6m = 4 + 4n


Step 1: −6(m) = −6(8 + 2n) [Equation 1 is multiplied by −6.]
6m = 4 + 4n [Equation 2]
Step 2: −6m = −48 − 12n [Equation 1 in Step 1 is simplified.]
6m = 4 + 4n [Equation 2]
Step 3: −6m + 6m = −48 − 12n + 4n [Equations in Step 2 are added.]
Step 4: 0 = −48 − 8n
Step 5: n = −6


In which step did the student first make an error?
Step 3
Step 5
Step 4
Step 2

Answer 33

its my 2nd to last one i have

Answer 34

step 1--correct
step 2 -- correct
step 3 --
-6m = -48 - 12n
6m = 4 + 4n
--------------
0 = -44 - 8n <====it was added wrong

I think that would be step 4....the error occurs in the addition of the 2 equations
but possibly step 3 because step 3 is the addition part...step 4 is the result
so I am not sure if it is 3 or 4

Answer 35

k what would u pick?

Answer 36

probably 4

Answer 37

k thanks

Answer 38

glad to help :)

Answer 39

step 4 or D

Answer 40

step 4 is C isn't it ??

Answer 41

4 is C yes

Answer 42

its confusing because the mistake was made during the addition of the 2 equations....so I am a little confused if that would be step 3 or step 4.....you might want to get a second opinion

Answer 43

idk i trust you

Answer 44

what about this one?
Two equations are given below:

m + 5n = 20
m = n − 4

What is the solution to the set of equations in the form (m, n)?

(3, 7)
(0, 4)
(5, 1)
(2, 6)

Answer 45

m = n - 4
so sub in n - 4 in place of m in the other equation

m + 5n = 20
n - 4 + 5n = 20
n + 5n = 20 + 4
6n = 24
n = 4

m = n - 4
m = 4 - 4
m = 0

(m,n) = (0,4)

Answer 46

sorry buddy, but I got to go now....I wish you luck :)

Answer 47

:( k thank you for your help