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2 years ago

Write an inequality involving the variable x that describes the set of numbers graphed.

Mathematics

1 answer:

Anna [14]2 years ago

3 0

Since it does not include 0 in the inequality, nor does it include any numbers below 0, it must be $\boxed{x\ \textgreater \ 0}$ .

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Suppose the scores of students on a Statistics course are Normally distributed with a mean of 563 and a standard deviation of 37

ololo11 [35]

Answer:

47.72% of students scored between 563 and 637 on the exam .

Step-by-step explanation:

The percentage of the students scored between 563 and 637 on the exam

= The percentage of the students scored lower than 637 on the exam -

the percentage of the students scored lower than 563 on the exam.

Since 563 is the mean score of students on the Statistics course, 50% of students scored lower than 563. that is P(x<563)=0.5

P(x<637)=P(z<z*) where z* is the z-statistic of the score 637.

z score can be calculated using the formula

z*= $\frac{X-M}{s}$ where

X =637

M is the mean score (563)

s is the standard deviation of the score distribution (37)

Then z*= $\frac{637-563}{37}$ =2

P(z<2)=0.9772, which means that 97.72% of students scored lower than 637 on the exam.

As a Result, 97.72%-50%=47.72% of students scored between 563 and 637 on the exam

5 0

2 years ago

Pleaseeee helppp it’s been due since a week ago

MAVERICK [17]

I think 20 Did you try googling it?

3 0

2 years ago

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Math help pls i don’t understand how to solve this

pochemuha

<h3>Answer: y = x+1</h3>

===================================================

Explanation:

f(x) = x^3 - 2x + 3

f ' (x) = 3x^2 - 2 ..... apply the power rule

f ' (1) = 3(1)^2 - 2 ... plug in x coordinate of given point

f ' (1) = 1

If x = 1 is plugged into the derivative function, then we get the output 1. This means the slope of the tangent line at (1,2) is m = 1. It's just a coincidence that the x input value is the same as the slope m value.

Now apply point slope form to find the equation of the tangent line

y - y1 = m(x - x1)

y - 2 = 1(x - 1)

y - 2 = x - 1

y = x - 1 + 2

y = x + 1 is the equation of the tangent line.

The graph is shown below. I used GeoGebra to make the graph.

4 0

3 years ago

A cleaner recommends mixing 1 1/2cup of cleaner for every 12 cups of water. What is the ratio of cleaner to water ?

Eva8 [605]

Answer:

1:8

Explanation:

1.5 (cleaner) to 12 (water)--> simplified is 1:8

5 0

2 years ago

If s = 1 over 3 unit and A = 18s2, what is the value of A, in square units? ____ square unit(s). (Input whole number only.)

arsen [322]

S= $\frac{1}{3}$
A=18 $s^{2}$
A=18*( $\frac{1}{3 )^{2} }$
A=2

3 0

2 years ago

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