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trasher [3.6K]
3 years ago
9

3х +2y = 13 2х - у = 4

Mathematics
1 answer:
shepuryov [24]3 years ago
4 0

Answer:

5x+y=17

Step-by-step explanation:

you subtract when you see the sign u add when u need to add.

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I need help, how do you do this
adell [148]

Answer: So you are going to make an equation first.

Step-by-step explanation:

first we know that for the first 2 hours the snow fell at an inch an hour. so we are going to make our first plots ( I suggest using an online site like geogebra or desmos to start out with before plotting for your assingment)

our first plot is going to be at (1,1) or 1 over and 1 up. remember points are in the form of (x,y). then (2,2)

Now we see that it has changed  now there is no  new snow for 6 hours so you are going to have a flat line so its going to be (2,2) then its going to continue that way as (3,2),(4,2), (5,2) (6,2)(7,2)(8,2).

It starts snowing again and now we have a new thing to plot the snow is falling at a constant of 3 inches an hour for the next 5 hours so now we are going to plot hte points to get our points we are going add 3 inches to our current inches each new hour. so its going to be (9,(2+3)) which is (9,5) and continue on doing that so we will have the plots (10,8) (11,11) (12,14) (13,17). and now we connect our plots by creating segments so then you do that on your thing and youre set to go I hope this helps.

6 0
3 years ago
How many times does 1/3 go into 1/18?
Orlov [11]
6 is the answer 18 divided by 3 equals to 6 so that’s the answer
4 0
3 years ago
Read 2 more answers
Need to know b and c : picture available ; worth 10 points
bulgar [2K]
B;

$6.00 lb + 15%  = 6.00 x 1.15 = $6.90

$6.90 x 2.6lbs = $17.94

C;

New price is $.90 more.

3.5 x .90 = $3.15 more



6 0
3 years ago
Conrad drew 2 angles. Three times the measure of angle 1 is 30° more than 5 times the measure of angle 2. The sum of twice the m
ad-work [718]
Let x= measure of angle 1
Let y= measure of angle 2

This is solving a system of equations

3x=30+ 5y which can also be written

3x-5y=30, and

2x+2y=180
There are a few ways to solve this, like solving for x in one of the equations and plugging it in for x in the other equation, but here is another way:
2(3x-5y)=2*30
3(2x+2y)= 3*180

6x-10y=60
6x+6y=540, and now subtract to get rid of x
0-16y=-480
Y=30
Plug it back in to either equation and you get x=60

3 0
3 years ago
Brian is solving the equation x^2 - 3/4 x = 5. What value must be added to both sides of the equations to make the left side a p
Arturiano [62]
I believe I answered your other question like this.

Just write the equation like: 
x^2 - 3/4 x - 5 and follow the same process that I listed out before
7 0
3 years ago
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