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denis23 [38]
3 years ago
8

Can someone please help with this problem

Mathematics
1 answer:
JulsSmile [24]3 years ago
8 0

Answer:

f(x)=-3(x+2)^2-2

Step-by-step explanation: the the FX graph the -3 in my equation represents the decrease(for being negative) in the graph, the positive 2 represents the x axis if that number is positive the negative 3 is going to change the x axis then will end up being negative which is why the x starts off in negative 2, the last number represents the y axis if the y axis is negative 2 the y will start off at -2

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If 10 pencils and 7 erasers cost $4.23 and 3 pencils and 1 eraser cost $0.95, what is the cost of 2 erasers?
QveST [7]

Answer: $0.58

<u>Step-by-step explanation:</u>

Let x represent pencil and y represent eraser

10x + 7y = 4.23   →   1(10x + 7y = 4.23)   →   10x + 7y =  4.23

3x  + y  = 0.95   →  -3(3x  + y  = 0.95)   →   <u>-21x - 7y</u> =<u> -6.65 </u>

                                                                    -11x         = -2.42

                                                                  <u>÷-11          </u>   <u>÷-11       </u>

                                                                         x        = 0.22  

      3x + y = 0.95

3(0.22) + y = 0.95

   0.66 + y = 0.95

               y = 0.29

2y = 2(0.29)  = 0.58


8 0
3 years ago
in the past month,karen rented  7 7 videos games and  6 d v d . the rental price for each video game  was $ 2
Savatey [412]
232.4 hope tthis helps
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Often sales of a new product grow rapidly at first and then level off with time. This is the case with the sales represented by
True [87]

Answer:

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S(t) = 500 - 400*t^(-1)

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S'(t) = dS(t)/dt

This differentiation will be:

S'(t) = -400/t^2

Then:

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S'(1) =  -400/1^2 = -400

The rate of change after one year is -400

b) t = 10

S'(10) = -400/10^2 = -400/100 = -4

The rate of change after 10 years is -4, it reduced as the years passed, as expected.

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Sidana [21]

Check the picture below.

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2 years ago
Check all solutions to the equation. If there are no solutions, check “None.” √x = 16
dedylja [7]
B. 4

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