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Mathematics

2 answers:

xz_007 [3.2K]2 years ago

5 0

Answer:

0 and -1/4

Step-by-step explanation:

First you need to move the -9x to the left-hand side to set the problem to 0.so when you move it, it becomes a positive

36x^2 + 9x = 0

Now factor out the GCF

9x (4x + 1) = 0

Now set up two problems to solve:

9x = 0 divide by 9

x= 0

4x +1 = 0 subtract 1 from both sides

4x = -1 divide by 4

x = -1/4

NARA [144]2 years ago

3 0

The answer in the top right. x = 0 or -1/4

1. Obviously 0 is correct, as anything times 0 will always be 0.

2.
36(-.25)^ = 2.25
9(-.25) = 2.25

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Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean length of 20.5 inches and a standard deviation of 0.90 inches.

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