Question

Can anyone help me with my last question for solving problems of linear equations

Answer 1

Sure - what's the question?

Answer 2

Let's call t the number of cans of tomatoes and c the number of cans of corn.

We know t + c = 32. We also know that 0.8t + 0.4c = 18.

You have two equations now - can you work it from there?

Answer 3

First you set up a system of equations. To show the total amount of veggies bought, you write x+y=32. Then you have to show the cost per can, using .8x+.4y=18. From there, you solve for one variable in each equation, then make the rest of the equation equal to each other, such as y=2x+2 and y=3x goes to 2x+2=3x. Then you can solve for x, and then plug x in to find y.

Answer 4

@Dreams<3 do you still need more help after following matt101's response?

Answer 5

yes in matt 101 response where do i go on from there

Answer 6

let t = 32- c
substitute in the 2nd eqn
you will have 1 eqn with 1 variable c
solve for c
now you have c find t using t = 32 - c

Answer 7

am sorry am still a little lost

Answer 8

in the 2nd eqn replace t with 32 - c
0.8(32- c) + 0.4c = 18
distribute, group like terms solve for c

Answer 9

what does it means to subtract by c

Answer 10

\[25.2c=18\] is it going to llok like that

Answer 11

What you're trying to do is solve for y in each equation, so then you can set them equal to each other. When you solve for y (rearrange the equation to get y on its own), you get the equations y=-x+32 and y=-2x+45. You know that y=y, so x+32=-2x+45. When you solve that equation for x, you get x=13. Now, take x and plug it into the original equation. So if x+y=32, then 13+y=32, so you know y=19. Your answer is (13,19).

Answer 12

that should be 25.6

Answer 13

i know but dnt i subtract 0.8 from it

Answer 14

the question ask to find t

Answer 15

when you have something outside the parenthesis you multiply by each term inside

Answer 16

T is tomatoes, and the tomatoes are x. In math, you use x and y for your variables about 85% of the time, so it's natural for me to convert them over. Your x coordinate is the number of tomatoes. When you go back, you can see I used x for t.

Answer 17

0.8 multiply by 32 = 25.6

Answer 18

i got 25.6

Answer 19

0.8(32 - c) + 0.4c = 18
0.8*32 +0.8*-c +0.4c = 18
25.6 -0.8c +0.4c = 18

Answer 20

leave the variables on one side the constants on the other keep the balance of the eqn

Answer 21

is it 1.4

Answer 22

no group like terms
let me see what you are doing

Answer 23

ok

Answer 24

Was the answer wrong

Answer 25

do you have c = 19
therefore t = 32 - 19 = 13
remember t = cans of tomatoes

check your answer
0.8c + 0.4t = 0.8*13 + 0.4*19= 10.4 + 7.6 = 18.00 as given

Answer 26

0.8(32 - c) + 0.4c = 18
0.8*32 +0.8*-c +0.4c = 18
25.6 -0.8c +0.4c = 18

Answer 27

are you ok with this?

Answer 28

so tha answer is 13

Answer 29

for c yes now find t

Answer 30

t = 32 - c
t = 32 - 13
t = 19
do you understand the process ?

Answer 31

i think i kinda do but i have to look at it over again

Answer 32

first write the eqns 2eqns with 2 variables
then express one variable in terms of the other example t = 32 - c
now substitute in the other eqn to get one eqn with 1 variable
solve that eqn to find the value of that variable
now use this value for the variable in the eqn to find the value of the other variable
once you have the values for the variables check your answer
to get started it does not matter which eqn you use first
hope this helps

Answer 33

Thank you ....... people have been calling me so much that it made my practice test run out of time on me so now i have to wait till tuesday untill my teacher can rrestart it

Answer 34

this will give you time to review and I hope you will get your priorities in order. Let me know if you need more help. all the best.