A:-4/3 B:-3/4 C:3/4 D:4/3

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

4 0

Answer:

-3/4

the answeer is B hehehehhehehhe

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What is the area of this triangle? Enter your answer as a decimal. Round only your final answer to the nearest hundredth.

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See attached picture for solution:

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4 years ago

The degree of the sum of the expressions x⁴ +4y₂ -5xy and x₃ - y + 2xy

MrMuchimi

Answer:

Step-by-step explanation:

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2 years ago

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Solve the equations help

Leni [432]

Answer:

First equation x=2, Y=9, Second Eq, x=2, y=1

Step-by-step explanation:

X+Y=11

2X-Y=-5 by substitution Y=11-X

So, 2x-(11-x)=-5, 2x-11+x=-5, 3x=6, x=2. Thus, Y=11-2=9

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3 years ago

Consider a normal distribution with mean 23 and standard deviation 7. What is the probability a value selected at random from th

Trava [24]

Answer:

0.5 = 50% probability a value selected at random from this distribution is greater than 23

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 23, \sigma = 7$