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
AfilCa [17]
3 years ago
7

Find the solution of the system of equations. -7x - 3y = - 20 3x+ 6y = -15

Mathematics
1 answer:
KiRa [710]3 years ago
3 0

Answer:

x = 5   y = -5

Step-by-step explanation:

-7x - 3y = -20

-3y = 7x - 20

y = -7/3x + 20/3

3x + 6(-7/3x + 20/3) = -15

3x - 14x + 40 = -15

-11x = -55

x = 5

-7(5) - 3y = -20

-35 - 3y = -20

-3y = 15

y = -5

You might be interested in
Please help. thx a bunch
Aleks [24]
0.55 HOPE THIS HELPS!
3 0
3 years ago
Read 2 more answers
Select the appropriate linear equation for the trend line.
Maksim231197 [3]

Answer:

A y = x + 1

Step-by-step explanation:

The line starts at 1 on the y-axis so the u intercept will be 1

4 0
2 years ago
Read 2 more answers
What the percent increase from 18 to 26
mina [271]
26-18=8. 8/18=4/9=44.444 (repeating)%
6 0
3 years ago
Find the z score that cuts-off the largest 9% under the standard normal curve. a) -1.34 b) 1.34 c) 0.536 d) 1.28
topjm [15]

Answer:

b) 1.34

Step-by-step explanation:

The z score is used to determine the number of standard deviations by which the raw score is above or below the mean. If the z score is positive then the z score is above the mean while for a negative z score implies that it is below the mean. The z score is given by:

z=\frac{x-\mu}{\sigma}

For the largest 9%, the score is 100% - 9% = 91% = 0.91

From the normal distribution table, the z score that corresponds to 0.91 is 1.34

4 0
3 years ago
In the first year of ownership, a new car can lose 20% of its value. If a car lost $4200 of value in the first year, how much di
Sever21 [200]
$5250
$5250-20%=$4200
5 0
3 years ago
Read 2 more answers
Other questions:
  • Line AB contains points A (3, −2) and B (1, 8). The slope of line AB is −5 negative 1 over 5 1 over 5 5
    13·2 answers
  • The diagram shows corresponding lengths in two similar figures. Find the ratio of the areas of the two figures.
    10·2 answers
  • Round to the nearest ten and hundred 363
    6·1 answer
  • Find two consecutive whole numbers that 7 lies between.
    11·1 answer
  • Please help me would be very appreciated.
    10·2 answers
  • I need help with this question pleaseee
    11·1 answer
  • Find the circumference of a circle with diameter 3 yd. use the value 3.14 for pie and do not round round the answer I’m looking
    10·1 answer
  • This graph shows how the length of time a canoe is rented is related to the rental cost. What is the rate of change shown in the
    5·1 answer
  • 1/2= ?/30 what is the number missing?
    9·1 answer
  • BRAINLY + 50 POINTS
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!