8x - 15 = 3x
+15 +15
8x = 3x + 15
-3x
5x = 15
/5 /5
x = 3
Answer:
Step-by-step explanation:
x²+7=43x
x²-43x+7=0
![x=\frac{43 \pm \sqrt{(43)^2-4(1)(7)} }{2(1)} \\=\frac{43 \pm \sqrt{1849-28} }{2} \\=\frac{43 \pm \sqrt{1821} }{2} \\\approx \frac{43 \pm 42.673}{2}\\\approx 0.1635,42.8365](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B43%20%5Cpm%20%5Csqrt%7B%2843%29%5E2-4%281%29%287%29%7D%20%7D%7B2%281%29%7D%20%5C%5C%3D%5Cfrac%7B43%20%5Cpm%20%5Csqrt%7B1849-28%7D%20%7D%7B2%7D%20%5C%5C%3D%5Cfrac%7B43%20%5Cpm%20%5Csqrt%7B1821%7D%20%7D%7B2%7D%20%5C%5C%5Capprox%20%5Cfrac%7B43%20%5Cpm%2042.673%7D%7B2%7D%5C%5C%5Capprox%200.1635%2C42.8365)
It’s very blurry can you please zoom out
Ok so when she lands her height is 0 and x = 1 second so we can write
-16x^2 v0x = 0
plug in x = 1
-16(1)^2 + v0 = 0
v0 = 16*1 = 16
so initial velocity = 16 ft/second
Top points A and B are still top points A' and B', so the figure was not reflected across the x-axis. (That refelection reverses top and bottom.)
The figure is reversed left-to-right, so was reflected across the y-axis. The only viable choice is the 3rd one:
... Reflection about the y-axis followed by translation up by 5 units.