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
kap26 [50]
3 years ago
12

Use substitution to solve 1-2. 3x – 3y = 9 x= 7 – 3y

Mathematics
1 answer:
kondaur [170]3 years ago
8 0

Answer:

Solutions are x =4 and y = 1

Step-by-step explanation:

3x-3y =9

In this equation substitute x=7-3y, we get

3(7-3y) -3y=9\\21-9y-3y=9\\-12y= 9-21\\-12y= -12\\y=1

now substitute y =1 in x equation,

x=7-3(1)\\x=7-3\\x=4

Solutions are x =4 and y = 1

You might be interested in
Which of the following ordered pairs make this equation true? Y = 2x - 7 A. (1,9) B. (-3, 4) C. (4,1) D. (-1, 5)​
gregori [183]

Answer:

(4,1)

Step-by-step explanation:

Using substitution you can determine that 2*4-7 is in fact equal to 1

3 0
2 years ago
During the quarantine, the Jones family installed a rectangular pool in their backyard that was 10 feet wide and 15 feet long. T
olganol [36]
15 feet martins family work for with the dodo code for a mask is a horrible thing to ware a little kid in a sweat room or the room with the kids and then they have a white black brown brown green green orange brown orange green green orange orange brown orange orange orange
5 0
3 years ago
Drag the phrases into the box to match each expression. 3/4x+1/2 ​ 3/4−1/2x ​ ​ 3/4−(x+1/2) ​ 20 pointss!!! i know i must be cra
fomenos

Answer:

\frac{3}{4}x + \frac{1}{2} = One-half more than three-fourths of a number

\frac{3}{4}-\frac{1}{2}x = Three-fourths minus one-half of a number

\frac{3}{4}-(x+\frac{1}{2}) = three-fourths minus the sum of a number and one-half

Step-by-step explanation:

Suppose x be an unknown number.

∵ 3/4th of a number = \frac{3}{4}x

\frac{3}{4}x + \frac{1}{2} = One-half more than three-fourths of a number

Now, half of a number = \frac{1}{2}x

\frac{3}{4}-\frac{1}{2}x = Three-fourths minus one-half of a number

Sum of a number and one-half = x+\frac{1}{2}

\frac{3}{4}-(x+\frac{1}{2}) = three-fourths minus the sum of a number and one-half

6 0
3 years ago
What monthly payment for a car lease is $300 for 24 months. The down payment is 1000. The residual value is $9000. What is the t
-BARSIC- [3]
Monthly payment - $7,200

Down payment - $1,000

Residual value - $9,000

Total cost of the lease - 17,200
6 0
3 years ago
Please help me with math please
SVEN [57.7K]

Answer:

62.50

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • How many one-thirds are in one-sixth?
    10·2 answers
  • You invest $500 in an account that has an annual interest rate of 8%, compounded weekly for 12 years. What is the equivalent int
    12·1 answer
  • Karen is on a game show. She will choose a box to see if she wins a prize. The odds in favor of Karen winning a prize are 5/7. F
    13·2 answers
  • Whats the solution to x=3?​
    7·2 answers
  • 9.) Suppose you bought supplies for a party. Three rolls of streamers and 15 party hats cost $34.50. Later, you
    14·1 answer
  • Find the median of the data. <br><br> 24,74,61,29,38,27,68,54
    15·2 answers
  • If f(x)= -9x+12, then f(20)=__<br><br> What is the answer?
    6·1 answer
  • Plss help mark brain list a lot of point
    7·1 answer
  • Decrease the number 225 in the ratio 5 : 3.
    5·1 answer
  • How do you work this equation? x² + x - 30 = 0
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!