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Stella [2.4K]
4 years ago
9

4. How many real-number solutions does the equation have?

Mathematics
1 answer:
erma4kov [3.2K]4 years ago
5 0
2 solutions. This is because the parabola will cross the x axis twice. We know this because -5 means the vertex will be 5 units below the x axis. and the parabola opens upwards because the first coefficient is positive. Hope this helped :)
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A ball always bounces to 3/5 of the height from which it is dropped. The ball is dropped from 1.8m and bounces 3 times. How many
Lesechka [4]

Answer:

0.3888 m or 38.88 cm

Step-by-step explanation:

I believe the question should be "how high will it rise from the third bounce?"

Initial height = 1.8m

If the ball only rises to 3/5 of the previous height after each bounce, the heights after the first three bounces are;

h_0=1.8m\\h_1=\frac{3}{5}*1.8=1.08\ m\\h_2=\frac{3}{5}*1.08=0.648\ m\\h_3=\frac{3}{5}*0.648=0.3888\ m

The ball will rise 0.3888 m or 38.88 cm from the third bounce

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RUDIKE [14]

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Step-by-step explanation:

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Step-by-step explanation:

∠W and ∠Z are supplementary

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