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oee [108]
3 years ago
9

You randomly draw a marble from a bag. You then put it back before drawing a second marble.

Mathematics
1 answer:
Anna11 [10]3 years ago
3 0
You have the same amount of marbles
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The interquartile range is
GrogVix [38]

Answer:

11.

Step-by-step explanation:

Lower quartile = (12 + 8) /2 = 10

Upper quatrile  = (20+22)/2 = 21

Interquartile range = 21-10 = 11,

6 0
2 years ago
How many points does the given equation have in common with the x-axis and where is the vertex in relation to the x-axis. y=x^2-
Fudgin [204]

Answer:

1. It has two points in common with the x-axis.

2. The vertex in relation to the x-axis is at x=6

Step-by-step explanation:

The points that the equation has in common with the x-axis are the points of intersection of the parabola with the x-axis.

To find them, substitute y=0 and solve for "x":

y=x^2-12x+12\\0=x^2-12x+12

Use the Quadratic formula:

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}\\\\x=\frac{-(-12)\±\sqrt{(-12)^2-4(1)(12)}}{2(1)}\\\\x_1=10.89\\\\x_2=1.10

It has two points in common with the x-axis.

To find the vertex in relation to the x-axis, use the formula:

x=\frac{-b}{2a}

Substituting values, you get:

x=\frac{-(-12)}{2(1)}\\x=6

3 0
3 years ago
You are the administrator of an annual essay contest scholarship fund. This year a $84,000 college scholarship is being divided
shutvik [7]

The winner got $70,000 and the runner up got $14,000

Let the winner be represented by x and runner up by y

Data given;

  • Amount to be shared = $84000
  • x = 5y

This is a simple case of ratio i.e 1 : 5

<h3>Equation</h3>

x = 5y\\84000 = 5y + y\\84000 = 6y\\y = 14000\\

The runner up received $14000. let's use this data to find how much the winner got.

x = 5y \\x = 5 * 14000\\x = 70000

From the calculations above, the winner got $70,000 and the runner up got $14,000.

Learn more about ratios here;

brainly.com/question/1781657

3 0
2 years ago
Pls help i will mark you brainliest
Korolek [52]
2 and 1/4 miles is how far Mary walks around the track. This is because she walks for 15 minutes before Jerry gets there, which is 0.75 miles at 3mph. Then Jerry goes for 2 miles, which is half an hour. Half an hour is double 15 minutes, so it's double 0.75 miles. So 0.75 plus 1.5 = 2.25 Mark me brainliest :3
7 0
3 years ago
A $50 watch was marked up to $60. What is the markup rate? Is it an increase or decrease?
makvit [3.9K]

It's increasing cause it's going higher if it's decreasing it's going lower

3 0
3 years ago
Read 2 more answers
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