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bulgar [2K]
3 years ago
14

Assume the random variable X is normally​ distributed, with mean of 50 and a standard deviation of 9. Find the 9th percentile.

Mathematics
1 answer:
vovangra [49]3 years ago
7 0

Answer:

37.94

Step-by-step explanation:

the 9th percentile is equal to a zscore of -1.34

-1.34=(x-50)/9

x=37.94

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Jack is selling wristbands and headbands to earn money for camp. He earns $2 for each wristband and $3 for each headband. He wan
djverab [1.8K]
Let
 x = wristbands
 y = headbands
 We then have the following inequations:
 2x + 3y> = 50
 x> = 5
 The graph that represents the solution for this system of inequations is shown in the attached image.
 The set of solutions is the shaded region.

8 0
3 years ago
Given that the points (-1, 5) and (2, 1) are vertices of a rectangle with sides parallel to the axes, how much longer is the len
Norma-Jean [14]

Answer:

Correct choice is A

Step-by-step explanation:

Two vertices of the rectangle have coordinates A(-1, 5) and B(2, 1). If rectangle sides are parallel to the axes, then two remaining vertices have coordinates C(-1,1) and D(2,5) (see attached diagram for details).

Find the length and the width:

AC=\sqrt{(-1-(-1))^2+(5-1)^2}=4\ units,\\ \\AD=\sqrt{(2-(-1))^2+(5-5)^2}=3\ units.

Then the length is 1 unit longer than the width.

7 0
3 years ago
Please help, I will give Brainliest to whoever answers! <3
Rufina [12.5K]

Answer:

the answer is c i did the test

Step-by-step explanation:

pls i did the test trust me.

7 0
3 years ago
Read 2 more answers
Write an equation for the graph below in slope-intercept form:
Zanzabum

Answer: y<1x-2

Step-by-step explanation:

Find some coordinates on the line to write a slope intercept form equation for the line and turn it into inequality.

First we need to find the slope and the y-intercept. The y intercept is when x is 0 and as we can see it  already indicates that the y intercept is -2 .

(0,-2)

(2,0)   Use these points o the find the slope.

0- 2 = -2

-2 -0 = -2

-2/-2 = 1   The slope is one so the equation will be y = 1x - 2   But since this is not an inequality we have to change the equal to sign to an inequality sign.

Looking at the line, it is a dashed line so the inequality sign will be > or <  

The painted side of the graph represents the solutions of the graph  and that is all underneath the graph so the inequality will be   y < 1x-2

8 0
3 years ago
Nathan usually drinks 38 ounces of water per day. He read that he should drink 60 ounces of water per day. If he starts drinking
lesya692 [45]

Answer:

58\%

Step-by-step explanation:

First, we need to find how much extra water Nathan drinks.

60-38=22 extra ounces.

To find the percent increase:

\frac{22}{38} =58\% (to the nearest percent)

Hope this helps :)

7 0
3 years ago
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