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4 years ago

3x-2y=13 and 2x+3y=-16

1 answer:

5 0

If youre trying to solve for the variables you have to solve for one of them in one equation first, so if you solved for x in 2x+3y=16 youd get x=8-(3/2)y. Then youd have to sub in that x for the x in the other equation so youd get 3(8-(3/2)y)-2y=13 then solve for y. Once you have the value of y it should be the same in both equations. Plug that new value of y into the equation of youre choosing then sove for x

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Select the correct answer.

Licemer1 [7]

Answer:

Step-by-step explanation:

Taking the equation for this we can see that A is using 8 to multiply. 8% = 0.08. But since the percent is increases it would be 1.08. So we can see that it cant be A, this applys for B as well. For D it says 1.8 which is close but that would be 80% not 8%. So now we can see that C is the answer.

5 0

3 years ago

Read 2 more answers

Write an algebraic expression that can get you the final price of an item that cost $x with a 8.5% tax and a 30% discount?

Drupady [299]

Answer:

X×0.085-(X÷0.30)

Step-by-step explanation:

I think that right its been a while since I did that stuff in school

6 0

3 years ago

The sum of 1 2 and 1 5 is between 1 2 and 1. true or false

klemol [59]

Answer:

I can't tell if that's 12 and 15 or 1 and 2 and 5 so i did both of them bellow

Step-by-step explanation:

12 + 15 = 27 so false

1+2+1+5 = 9 true

5 0

3 years ago

Read 2 more answers

If C(x) is the total cost incurred in producing x units of a certain commodity, then the average cost of producing x units of th

nataly862011 [7]

Answer:

x = 2000 cameras

Step-by-step explanation:

C(x) Total cost in producing x units

C- = C(x) /x Average cost of producing x units x > 0

Cannon Precision Instrument

C (x) Total monthly cost for producing x units of M1 cameras

is C(x) = 0.0025x² + 80x + 10000

Then average cost of producing x cameras M1 is

C-(x) = ( 0.0025x² + 80x + 10000) /x

C-(x) = 0.0025x + 80 + 10000/x

Taking derivatives on both sides of the equation

C-´(x) = 0.0025 - 10000/x²

Then

C-´(x) = 0

( 0.0025x² - 10000 ) / x² = 0

0.0025x² - 10000 = 0

x² = 10000 /0.0025 x² = 4000000

x = 2000 cameras

8 0

3 years ago

Graph the function. For the function whose graph is shown below, which is the correct formula for the function? y = –x – 1 y = x

rusak2 [61]

You forgot to mention the graph.
So, I make the graph of both given functions and you will compare your graph with them.

First, y= -x-1
put y=0 you get point (-1,0) called x-intercept
put x=0 you get point (0,-1) called y-intercept
join both the points, you will get the graph
Graph is attached in the picture.

Second, y= x+1
put y=0 you get point (-1,0) called x-intercept
put x=0 you get point (0,1) called y-intercept
join both the points, you will get the graph
Graph is attached in the picture.

4 0

3 years ago