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Veronika [31]
3 years ago
7

WILL MARK BRAINLIEST: If the ratio of students passing the last math test was 5 passing grades to 1 failing grade. How many of t

he 80 students passed the test?
Mathematics
1 answer:
Anika [276]3 years ago
4 0

Answer:

66

Step-by-step explanation:

I dont feel like explaining, it was a long process, but its right. Pls give brainiest.

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A parallelogram has symmetry with respect to the line that _____.
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A parallelogram has symmetry wii respect to the line that C- Bisects it from opposite vertices.
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⚠️⚠️ DONT IGNOR ⚠️⚠️ <br><br> WHAT IS THE ANSWER AND WHICH IS PROPORTIONAL ¿
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5 0
3 years ago
6. Which expression is equivalent to -21 + 28x?
Rina8888 [55]
Solution,
-28x^2+35x
take the common,
-7x(4x-5)
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Here,
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3 0
3 years ago
Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people a
Vanyuwa [196]

Answer:

The probability is 0.9938

Step-by-step explanation:

In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.

To calculate this, we use the z score.

Mathematically;

z = (mean - value)/(standard deviation/√N)

From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)

Let’s plug these values;

z = (125-123)/(9.6/√144) = 2.5

Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables

P(z<2.5) = 0.9938

8 0
3 years ago
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