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Oxana [17]
3 years ago
11

I need help with trigonometry

Mathematics
1 answer:
frutty [35]3 years ago
3 0

Answer:

x = 0.76

Step-by-step explanation:

plugged it into calculator

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1.Mr. Bowen’s test is normally distributed with a mean of 75 and a standard deviation of 3 points.
lianna [129]

Answer:

2.28%

Step-by-step explanation:

Mr. bowens test is normally distributed with a mean (μ) of 75 and a standard deviation (σ) of 3 points.

The z score is used in probability to show how many standard deviation is a raw score below or above the mean. The formula for the z score (z) is given by:

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

For a raw score (x) of 81 points, the z score can be calculated by:

z=\frac{x-\mu}{\sigma}=\frac{81-75}{3}=2

Therefore from the normal probability distribution table, the probability that a randomly selected score is greater than 81 can be given as:

P(x > 81) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228 = 2.28%

7 0
3 years ago
What is the values of the soul out ion to the inequality<br> 9 &lt; 3x + 4?
HACTEHA [7]

Answer:

x>5/3

Step-by-step explanation:

9<3x+4

3x+4>9

3x>9-4

3x>5

x>5/3

5 0
3 years ago
To evaluate customer satisfaction, a grocery store gives double coupons to anyone who completes a survey as they enter the store
Genrish500 [490]

Answer:

what is the question then

Step-by-step explanation:

8 0
3 years ago
Help me pls only 10points
NeX [460]

y=-7x+8

y=-7x-8

-7x+8=-7x-8

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x∈∅

B. No solutions

3 0
3 years ago
According to the bar graph, which attribute is under investigation?
Kryger [21]
The answer is A) the height of students 
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