Answer:
Just plug in 10^2-7.5^2
To get 43.75
Step-by-step explanation:
I hope you figure this out.
Answer:
Each pair of shoes cost 26$
Step-by-step explanation:
<em>find the total cost for shirts</em>
2 shirts * 12$ each
2 * 12 = 24
they spent 24$ on shirts
<em>create an equation</em>
24$ shirts + x$ shoes = 76$
24 + x = 76
<em>subtract 24 from both sides of the equation</em>
24 + x - 24 = 76 - 24
x = 76 - 24
x = 52
they bought 2 pairs of shoes that cost the same amount
52 = x + x
52 = 2x
<em>divide both sides of the equation</em>
52/2 = 2x/2
52/2 = x
26 = x
each pair of shoes cost 26$
7x - 9 = 28 + 4x - 4
7x - 4x = 28 - 4 + 9
3x = 33
x = 11
-1/2
negative half
yea lol
Step-by-step explanation:
) y2 = 4x
differenting both side with respect to x
dy²/dx=d4x/dx
2y dy/dx=4
dy/dx=4/2y=2/y
