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
kati45 [8]
3 years ago
8

2. Solve the system of equations using the substitution method.

Mathematics
1 answer:
Dimas [21]3 years ago
7 0

Answer:

x = 1

Step-by-step explanation:

2x + 3y = 20

2x + 3(10-4x) = 20

2x + 30 - 12x = 20

combine like terms

-10x + 30 =  20

        -30      -30

-10x = -10

divide both sides by -10

x = 1

Hope this Helps!!!

You might be interested in
Replace ? with =, >, or < to make the statement true. 12 ÷ 4 + 13 ? 2 + 22 ÷ 2
bogdanovich [222]

Answer:

>

Step-by-step explanation:

On the left side, we divide first: 12/4=3

On the left side, we get 3+13, which equals 16.

On the right side, we also divide first: 22/2=11

On the right side, we get 11+2, which equals 13.

We know that 16 is larger than 13, so  

12 ÷ 4 + 13 > 2 + 22 ÷ 2

Hope this helps!

8 0
3 years ago
Write an equation of the line with the given slope and y-intercept.
11Alexandr11 [23.1K]
Y=-1/3X-1 should be correct
4 0
3 years ago
F(x) = 8x - 10
otez555 [7]
Fx=8(20) -10
fx= 160-10
answer= 150
3 0
2 years ago
Read 2 more answers
The table below shows the velocity y, in miles per minute, of a toy car at different times x, in minutes: Time (x) (minutes) 10
MrMuchimi
A. If you plot the points in a graph, it would look like that shown in the picture attached. If we use linear regression, the correlation is very poor. The coefficient of correlation (r2) is only 0.0017. There is no linear relationship between time and velocity.

B. The slope of the graph is equal to y2-y1/x2-x1, In this case, it would specifically be v2-v1/t2-t1

Slope = 0.8-0.2/20-10 = 0.06 miles/s^2

The slope represents the acceleration at time 10 to 20 minutes.

C. The table in the graph shows causation rather than correlation. The points in the data occur in a sequential manner.


8 0
3 years ago
Tapes-r-us are us is having a sale on HQ tape players the regular price is $60 discount is $18 what percent discount is this
Marianna [84]
To find the percent discount you will write the following equation:
x% of 60 is 18

<u>60x</u> = <u>18</u>
60      60

x = 0.3
The discount is 30%.
3 0
3 years ago
Other questions:
  • 4. En el Vivero de Arturo hay 226
    7·1 answer
  • Can someone please help me evaluate this expression? 18÷2+7*3
    7·2 answers
  • Walt is mixing fruit punch for a party. He combines 1 gallon 2 quarts 3 pints of orange juice, 1 gallon 3 quarts 7 pints of pine
    9·1 answer
  • Percy works two part-time jobs to help pay for college classes. On Monday, he works 3 hours at the library and 2 hours at the co
    5·1 answer
  • Where would you put the decimal point in 201 x 15 to make it equal 30.15<br><br> 201 x 15 = 30.15
    5·2 answers
  • 12y+15=24-6y ??????????????????
    15·1 answer
  • Significant figures of 5.50​
    5·1 answer
  • Over a period of 12 hours the temperature dropped 36°F what was the average change in temperature in one hour?
    12·2 answers
  • Find the slope and the y-intercept of the line.
    15·1 answer
  • Khan Academy Volume of Sphere Answers!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!