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Lorico [155]
3 years ago
13

Help ,with number 9, please

Mathematics
1 answer:
sleet_krkn [62]3 years ago
7 0
9 is linear. Rearrange to get into standard line format

2x + 3y = 5
3y = -2x + 5
y = -2/3x + 5/3

Now, plot a point at 5/3 on the y axis. Go down 2 and right 3 and put another point
Then draw a line running through both points.
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Amanda earned a score of 940 on a national achievement test that was normally distributed. The mean test score was 850 with a st
snow_lady [41]
<span>In math notation, we've done this: z = (X - μ) / σ = (940 - 850) / 100 = 0.90 where z is the z-score X is Vivian's score (940) µ is the mean (850) σ is the standard deviation (100) As you may know, in a normal distribution it's expected that about 68% of all observations will fall within 1 standard deviation of the mean, 95% will fall within 2 standard deviations, and 99% will fall within 3 standard deviations. 
940 lie before the first standard deviation, in which 16.5% is above it
since 940 is 0.9 from the mean and 0.1 from the first standard deviation
so above it is 17.5 % = 0.175 or about 0.18 </span>
4 0
3 years ago
Six different​ second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic re
Sauron [17]

Answer:

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7 0
3 years ago
Tom ordered some books online and spent a total of $75. Each book cost $6 and he paid a total of $3 for shipping. How many books
BaLLatris [955]

Answer:

a)

_b+_=_

6B+3=75

B)

He ordered 12 books

Step-by-step explanation:

so each book (b) costs $6. he payed $75 total including the $3 shipping price

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5 0
3 years ago
Is 4.8973 rational or irrational
Brrunno [24]

Answer:

rational

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is an equation of the line that passes through the points (0,-5) and (-6,0)?
charle [14.2K]

Answer:

y=-5/6x-5

Step-by-step explanation:

0-(-5)/-6-0

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y-(-5)=-5/6(x-0)

y+5=-5/6x

y=-5/6x-5

8 0
3 years ago
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