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ValentinkaMS [17]
2 years ago
9

Please help I will reward brainliest

Mathematics
2 answers:
kolbaska11 [484]2 years ago
5 0

Answer:

3 or 1/3

Step-by-step explanation:

zhenek [66]2 years ago
3 0
1/3 dawg hope this helped
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Is the triangle an acute, isosceles, obtuse, or right?
Trava [24]

Step-by-step explanation:

k =70 because all triangles angles add up to 180° and it's an acute angle cause all the angles are lower than 90° hope this helps

5 0
2 years ago
Substitution for -3x+y=-9
shtirl [24]

Answer:

y=3x-9

Step-by-step explanation:


4 0
2 years ago
Rachael got a 550 on the analytical portion of the Graduate Record Exam (GRE). If GRE scores are normally distributed and have m
valina [46]

Answer:

Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population \mu=600

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

\mu=600 represent the population mean for the Graduate Record Exam (GRE)

\sigma=25 represent the population standard deviation for Graduate Record Exam (GRE)

2) Solution to the problem

Let X the random variable that represent the Graduate Record Exam (GRE) of a population, and for this case we know the distribution for X is given by:

X \sim N(600,25)  

Where \mu=600 and \sigma=25

We want to find the z score for a score of 550. And in order to do this we need to apply the formula for the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

z=\frac{550-600}{25}=-2

So the answer for our case would be Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population \mu=600

7 0
3 years ago
Im really bad at this haha
expeople1 [14]
The correct answer is B
5 0
3 years ago
Read 2 more answers
PLZ HELP 20 POINTS AND CHOOSING BRAINLIEST
kow [346]
The answer is C (301.6)
8 0
2 years ago
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