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Alexandra [31]
2 years ago
9

how to discriminant of each quadratic equation then state the number and type of solutions. yall fr help me

Mathematics
1 answer:
vitfil [10]2 years ago
6 0
Try this option.
Note, 1. the rules marked with blue colour, the solutions marked by red; 2. solutions are given shortly.

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What is the ratio of a pinion gear with 14<br> teeth to a driven gear with 72 teeth?
kirill [66]

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4 0
2 years ago
Jeremy's score was 1.75 standard deviations above the mean. which kf thr following is closest to his percentile rank
Gelneren [198K]
The answer is 96%.

Explanation:
It is generally presumed that the scores are normally distributed.

1) You are given how many standard deviations from the mean Jeremy's score is. This is exactly the definition of the z-score. Therefore z = 1.75

2) Look at a left-tail z-table in order to find the area of the normal curve on the left of your z-score (see picture attached). A = 0.9599

3) Multiply the area by 100 in order to find the percentile:
<span>0.9599 </span>× 100 = 95.99
Therefore, 95.99% of the students scored less than Jeremy.

Hence, the answer is 96%.

4 0
3 years ago
Can someone help me with exercise 121?
yanalaym [24]
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X^4+2X^2-119X^2-2X
So it would be
X^4+117X^2-2X=0
So basically X is undefined
8 0
3 years ago
The title of the homework is Sine and Cosine rule
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I would say that you
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