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Zielflug [23.3K]
3 years ago
11

X^2-2y/y when x=20 and y=x/2

Mathematics
2 answers:
DerKrebs [107]3 years ago
4 0

Answer:

I believe its 398

Step-by-step explanation:


vagabundo [1.1K]3 years ago
3 0

Answer:

398

Step-by-step explanation:

x^2=400

substitute for y, 2y/y=(2*x/2)/(x/2)=x/(x/2)=x*(2/x)=2

400-2=398

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I’ll mark brainliest
Naddik [55]

Answer:

A

Step-by-step explanation:

ok so pretend the 2.00 was just 2 so whats 8 divided by 2? 4 right so if we test that witht he other problems its the same so its A

Hope this helps!!!!     :D

4 0
3 years ago
Yearbook sales this year increased 120% over last years yearbook sales. If 465 yearbooks were sold last year, how many were sold
uranmaximum [27]
First turn the percent into a decimal. It would be 1.20.
Multiply 465 and 1.20.
465 x 1.20=558
Then add 465 and 588 to get the final amount.
465+558=1023
There were 1,023 yearbooks sold this year.
4 0
3 years ago
Read 2 more answers
How do you factor this?<br> 2z^2-12z+10=0
kotykmax [81]

Answer:

This can't be factored right now! But if it is 2z^2+12z+10=0 than it will be factored like this:

2*(z+5)(z+1)

Step-by-step explanation:

2*(z^2+6z+5)=0

2*(z+5)(z+1)

4 0
3 years ago
Read 2 more answers
Quadrilateral OPQR is inscribed in a circle as shown below...
kipiarov [429]
We can use the fact that a cyclic quadrilateral (i.e. a quadrilateral inscribed in a circle) has the opposite angles supplementary, therefore
2x+(2x+4) = 180
Solving for x:
4x+4=180 
4x=180-4=176
x=176/4=44 &deg;
=>
angle O = 2x = 88 &deg;  
angle Q=180-O=180-88 = 92 &deg;

Similarly,
(3y+8)+y= 180
=> y=43 &deg;
=>
P=y=43 &deg;
R=180-43=137 &deg;
7 0
3 years ago
I have no idea - please show your work and give some details. Thanks!
Vinil7 [7]
Okay, I can exactly show my work. but you can answer this by counting the muber of spaces between points A and C. So the answer should be A 13, my bud.
4 0
3 years ago
Read 2 more answers
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