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Sati [7]
2 years ago
7

A bag contains 6 red marbles and 30 white marbles. If a representative sample contains 3 red ​marbles, then how many white marbl

es would you expect it to​ contain?
Mathematics
1 answer:
BaLLatris [955]2 years ago
6 0
There are 36 marbles total.
if the sample contains 3 red marbles, then that is half of the total amount of 6. therefore, half of each color is being taken for the sample. this means that you should expect for there to be 15 while marbles in the sample.
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A lion runs at a speed of 50 mph and a cheetah runs 78 mph. If they both run at a steady rate, how far will a cheetah run in the
Elden [556K]

Answer:

21.45 mi

Step-by-step explanation:

Distance = speed × time

The time it takes the lion is:

13.75 mi = 50 mi/hr × t

t = 0.275 hr

The distance ran by the cheetah in that time is:

d = 78 mi/hr × 0.275 hr

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7 0
3 years ago
Read 2 more answers
Triangle ABC was dilated using the rule Do,4. Triangle
AysviL [449]

The value of OB based on the information given about the triangle is 3 units.

<h3>How to illustrate the information?</h3>

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8 0
2 years ago
In June 2012, Twitter was reporting 400 million tweets per day. Each tweet can consist of up to 140 characters (letter, numbers,
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Each tweet would cost between 1 and 140 pennies you can write that as an inequality [1 ≤ x ≤ 140] Since you can't tweet 0 characters or above 140.

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3 years ago
What is the sum of the two Numbers? Pls help
vaieri [72.5K]
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7 0
3 years ago
Find the coordinates of the midpoint of a segment with the endpoints (12,2) and (7,9)
olga55 [171]

Answer:

(9\frac{1}{2}, 5\frac{1}{2}) or (9 1/2, 5 1/2)   (same things, just typed two different ways)

Step-by-step explanation

  I can't remember the midpoint formula so I'll use a different method to get the midpoint.  


    since the ratio of a midpoint is 1:1 and that as a fraction is 1/2, we can take these coordinates and designate which one is first and which one is second (12, 2) will be my second and (7,9) will be my first. The formula I will use will be \frac{m}{m+n} (second X, - first X) + first x, so 1/2( 12 - 7) +7. now distribute the 1/2 to both the numbers  \frac{1x12}{2}  -\frac{1x7}{2} + 7  \\ \\ 12/2 -7/2 = 5/2 + 7 = 9.5  or 9\frac{1}{2}. The same works with the Y values, which would equal up to 5.5 or 5 \frac{1}{2}

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1 year ago
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