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puteri [66]
3 years ago
6

Please, my whole grade depends on this question!!!

Mathematics
1 answer:
Effectus [21]3 years ago
6 0

Answer:

Y =  1/2 times -3 ( 1 x 5 )

Step-by-step explanation:

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Solve the system of equations.<br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%3D220x-160%7D%20%5Catop%20%7By%3
Leni [432]

\begin{cases} y=220x-160\\ y=20x^2-400 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\textit{\Large y}}{220x-160}~~ = ~~20x^2-400} \\\\\\ -160=20x^2-220x-400\implies 0=20x^2-220x-240 \\\\\\ 0=20(x^2-11x-12)\implies 0=x^2-11x-12 \\\\\\ 0=(x-12)(x+1)\implies x= \begin{cases} 12\\ -1 \end{cases}

\dotfill\\\\ x=12\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(12)-160}\implies y=2480 \\\\\\ x=-1\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(-1)-160}\implies y=-380 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (12~~,~~2480)\qquad (-1~~,~~-380)~\hfill

4 0
2 years ago
Sean used 3/4 of sugar to make a dozen brownies. how many sugar is in each brownie
charle [14.2K]
1/16 of a cup is in each brownie
4 0
3 years ago
Help plz?!!??!!?!!??!
3241004551 [841]
180 - 275 = <span>95

</span>Which is... C) 95kg


An easy way to check your answer is right is to add 95 to 180.

180 + 95 = 275

275=275

The answer checks out!


7 0
3 years ago
Read 2 more answers
What is the domain of f(x)=<br> 10x1-(4)<br> ?
MakcuM [25]

Answer:

Domain:(−∞,∞),{x|x∈R}

Step-by-step explanation:

5 0
2 years ago
Graph:<br> Y:3sin(2x-pi/3)-2<br><br> Find max,min,amplitude,horizental shift,and vertical shift)
patriot [66]
Max:
Min:
Amplitude: 3
Horizontal Shift: 0
Vertical Shift: -2

I'm not sure on the max and min, but here is everything else. ^_^
7 0
3 years ago
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