8 Of Them
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Answer:
May and Ellie collected data for 75 graphs, recording whether the graphs were increasing or decreasing, and whether or not they crossed the x-axis. The table below shows their findings.
Step-by-step explanation:
4x² + 3x + 5 = 0
x = <u>-3 +/- √(3² - 4(4)(5))</u>
2(4)
x = <u>-3 +/- √(9 - 80)</u>
8
x = <u>-3 +/- √(-71)
</u> 8<u>
</u>x = <u>-3 +/- √(71 × (-1))</u>
8
x = <u>-3 +/- √(71) × √(-1)
</u> 8<u>
</u>x = <u>-3 +/- 8.43i
</u> 8
x = -0.375 +/- 1.05375i
x = -0.375 + 1.05375i x = -0.375 - 1.05375i
<u />
check the picture below, you can pretty much count the units off the grid.
recall that A = (1/2)bh.
Answer:
P(z > 0.6071) = 0.2719
Step-by-step explanation: