1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shutvik [7]
3 years ago
7

Y=-3x - 4 y= 2x + 1

Mathematics
1 answer:
Naily [24]3 years ago
4 0
\left \{ {{y=-3x-4} \atop {y=2x+1}} \right. \\\\ substitution\ method\\\\
-3x-4=2x+1\ \ \ | subtract\ 2x\\\\
-5x-4=1\ \ \ | add\ 4\\\\
-5x=5\ \ \ | divide\ by\ -5\\\\
x=-1\\\\
y=2x+1=2*(-1)+1=-2+1=-1\\\\
Solution:\\ \left \{ {{y=-1} \atop {x=-1}} \right.
You might be interested in
A water delivery truck is filling the water tank at Morgan's house. The truck arrived with 2400 L of water. The number of liters
Luda [366]

Answer:

11.81 minutes

Step-by-step explanation:

Here is a simple step-by-step explaination of how to solve this word problem:

Since the truck has 2,400L in it to begin with, the first part of our equation will be 2,400L

L = 2400L



Next we know that the water in the truck decreases at a <u>rate</u> of 110L/min, or <u>Liters per minute</u>.

So we will put that in the equation:

L = -110L + 2400L

Now that we have our equation set up, its time to solve.

To figure out how much water it needs to lose in <u>total</u> to end up with 1100 L left, we subtract 1,100 from 2,400.

2,400 - 1,100= 1,300&#10;&#10;

Now we can take that number and divide it by how many liters per minute were lost.

1,300/110=11.81

So the total amount of time it took for the truck to have 1,100 L left is 11.81 minutes. Your answer would be

B. L=-110t + 2400, t=11.8 min

Hope this helps! : )

3 0
2 years ago
Read 2 more answers
2y=8x What is the slope intercept form, slope, and y-intercept
kaheart [24]
Y-intercept: 0
Slope: 4

Explanation
Y-intercept is the number without the x which in this case is no number so it’s 0 so that’s where the point in the y axis goes

Slope is rise over run so if the equation is 2y = 8x then we can simplify this by dividing both sides by 2 which would be y = 4x so slope is 4/x. Which is basically 4/1 because the x means over one so up 4 units and to the right once


Hope this helps
3 0
2 years ago
How to calculate the rise and run of a slope (4,-1) and (-2,3)
astra-53 [7]
m =  \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }
m =   \frac{3 - (-1)}{-2 - 4}
m =  \frac{4}{2}
m = 2
8 0
3 years ago
A two way table shows information about pupils in a primary school
arlik [135]

Answer:

42 boys can count (given)

P(boy & can count) = 0.35

Step-by-step explanation:

P(boy who can count) = 42/120

7/20 = 0.35

7 0
3 years ago
30 points!
madreJ [45]
You would start at (0,36) and then move to (1, 24) , (2,12), (3,0) because he gives out 12 bags per hour 
7 0
2 years ago
Read 2 more answers
Other questions:
  • A pizzeria charges $8 for a large cheese pizza, plus $2 for each topping. The total cost for a large pizza is given by the equat
    8·2 answers
  • Evaluate st2 - pqr, if p = -2, q = 5, r = -7, s = 0, and t = 4.
    13·2 answers
  • How do you solve -4xy?
    10·2 answers
  • the volume of a cylinder is 600 pi in3. The height of the cylinder is 6in. I have to calculate the radius of the cylinder
    14·1 answer
  • Sammy plans on a discounted loan with an advertised interest rate of 9%. Sammy will pay $153 in interest on the $1700 loan. How
    7·1 answer
  • What does 45 - 4x equal
    12·1 answer
  • Please help Im confused
    7·2 answers
  • -5 – [-17 + (15 -6)] + (-15 - 8) – {-1 + (8 - 9) + (7 - 10)}
    13·1 answer
  • It cost Evan $17.70 to send 177 text messages how many text messages did he send if he spent $19.10
    5·1 answer
  • Please help answer!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!