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Elan Coil [88]
2 years ago
7

walter's salary this year is $23,400. If this is $1,700 more than he made last year, what was his salary last year?​

Mathematics
1 answer:
kow [346]2 years ago
3 0

Answer:

21700

Step-by-step explanation:

23400 - 1700 = 21700

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A system of linear equations is graphed. which ordered pair is the best estimate for the solution to the system?
OLga [1]

Answer:

The answer that gives the best estimate is (1,1)

Step-by-step explanation:

i) As can be seen on of the lines intercepts the y axis at (0,-1). So the y

 intercept or c_{1} = -1. Therefore the equation for this line can be written as

 y = m_{1} x + c_{1}    ⇒    y = m_{1} x - 1 . It can also be seen from this graph that the

 line passes through the point (2 , 2). Substituting these values for x and y  

 respectively we get  2 = 2m_{1} - 1    ∴ m_{1} = \frac{3}{2}.  The equation of the first line

 can be written as y = \frac{3}{2} x - 1   ⇒ 2y - 3x = -2

ii) As can be seen on the other line the intercept on the y axis is at (0,2). So

  the y  intercept or c_{2} = 2. Therefore the equation for this line can be  

  written  as  y = m_{2}x + c_{2}    ⇒    y = m_{2} x + 2 . It can also be seen from this  

   graph that  the  line passes through the point (1 , -1). Substituting these

   values for x and  y   respectively we get  1 = 1m_{2} + 2    ∴ m_{2}  = -1 .  The

   equation of the second line  can be written as y = - x + 2   or x + y = 2

iii) Solving the two equations of the two lines respectively as found in i) and

  ii)  we get y = 0.8. We multiply equation in ii) by 3 to get 3x + 3y = 6 and  

  when we add this to equation in i) we get 5y = 4 which means that y = 0.8.

  If we substitute this value in ii) we get 0.8 + x = 2 , therefore x = 1.2.

iv) Therefore we get the solution of the two lines, which is the intersection

    of the two lines as (1.2, 0.8). So the answer that gives the best estimate

    is (1,1)

6 0
3 years ago
Is y=x squared +2 a linear function
ollegr [7]
No, this would not be a linear function. Being linear means it creates a straight line, but this function has an x squared. Anytime x^2 is in a function, the graph is a u shape, called a parabola. A simple linear function is y=x :D
7 0
3 years ago
Read 2 more answers
I need help please! Please help me!
hodyreva [135]
I think the answer is ( 28 degrees
7 0
3 years ago
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How to factorise 15x-10x^3
ivann1987 [24]
The answer is 5x(3-2x^2)
8 0
2 years ago
5/16 divide by 20/40= SHOW WORK
Elenna [48]
5/16 divided by 20/40
5/16 times 40/20
5 times 40= 200
16 times 20=320
200/320=20/32=10/16=5/8

Final Answer: 5/8
6 0
2 years ago
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