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
drek231 [11]
3 years ago
11

Please help me answer this for a test im having trouble

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

Answer:

x + 1

y = 9

Step-by-step explanation:

In order to solve this question we need to represent "y "in terms of "x" in the first equation, and the plug in the "y" value in the first equation into the second one. Luckily for us in the first equation it already shows what "y" is equal to in terms of "x" (based on the first equation y = -x + 10). Now we just need to plug in the value that we got instead of "y" in the second equation, and so we get....

y = 7x + 2

(plug in the y value and get the following ….)

-x + 10 = 7x + 2

(now just solve the following equation)

-x + 10 + x = 7x + 2 + x

10 = 8x + 2

10 - 2 = 8x + 2 - 2

8 = 8x

8/8 = 8x/8

1 = x

Now that we know the value of "x", all we need to do now is substitute the value of "x" into any of the equations and we will get the value of "y". So we do the following.....

y =  7x + 2

y = 7(1) + 2

y = 7 + 2

y = 9

You might be interested in
In a certain board game, a 12-sided number cube
alexandr1967 [171]

Answer:

4/27 ezzzzzzzzzzzzzzzzzzzz

8 0
2 years ago
Jan bought 6 cookies and 4 doughnuts for 3.50. Tom bought 12 cookies and 5 doughnuts got 5.23. Write and solve a system of equat
iren2701 [21]
0.19 for one cookie and 0.59 for one doughnut

x for how much one cookie costs and y for how much one doughnut costs
6x+4y=3.5
12x+5y=5.23

solve by substitution: (elimination would work too)
4y=3.5-6x
y=0.875-1.5x
12x+5(0.875-1.5x)=5.23
12x+4.375x-7.5x=5.23
4.5x=0.855
x=0.19
now use x to solve for y:
6(0.19)+4y=3.5
1.14+4y=3.5
2.36=4y
y=0.59

Check the work: 6(0.19)+4(0.59)=3.5
4 0
3 years ago
List the factors in decimals in order from least to greatest 0.5 3/16 0.75. 5/48
suter [353]
5/48
3/16
0.5
0.75

This is listen in least to greatest...
6 0
3 years ago
What is the value of 4p − 2, when p = 8
ddd [48]
If P=8, Then you would plug in 8 for P. 

4(8)-2 = 30 

Hope this helps :)
4 0
3 years ago
Read 2 more answers
5 + 4x - 2x = 8x + 11 + 12<br><br> Explain step by step PLEASE
Yuliya22 [10]

Answer:

The solution is x = -3

Step-by-step explanation: Please brainliest!

4 0
2 years ago
Read 2 more answers
Other questions:
  • The slope of the line through the points is 2. Which statement describes how the slope relates to the height of the water in the
    11·1 answer
  • 5 over 7 plus 1 over 7
    8·2 answers
  • Answer:<br> A. 20 units<br><br> B. 30 units<br><br> C.40 units<br><br> D. 50 units
    13·1 answer
  • 70 points
    9·2 answers
  • What is a verbal expression for the algebraic expression 15 + r?
    12·1 answer
  • Whats 4.25 increased by 15%
    9·2 answers
  • The product of three consecutive odd numbers is 6,783.<br> What are the numbers?
    8·1 answer
  • Quiana made 5 equal monthly payments from her bank account which rational number shows something being removed 5 time​
    13·1 answer
  • The slope of the line is_____.<br> (Type an integer or a simplified fraction.)
    15·1 answer
  • What is this transformation called?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!