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hichkok12 [17]
3 years ago
7

there are 10 counters in a box a counter is chosen and replaced 100 times the results are 58 blue and 42 red how many of each co

lour do you think there are in the box
Mathematics
1 answer:
Blababa [14]3 years ago
3 0
Because the picking was done 100 times, the number of times a counter appeared is the equivalent of its percentage
So blue was picked 58% of the time, and red picked 42% of the time
Then
58% of 10 is 5.8
42% of 10 is 4.2
Since you can't have portions of a counter, you have to round the two numbers to the nearest integer, so there were 6 blue counters and 5 red counters. The reason they deviate slightly from this value is just because of random outcome
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IgorC [24]

t=\dfrac{v}{q}\\ q=\dfrac{v}{t}

3 0
4 years ago
T= k/k-2
mart [117]

Answer:

Step-by-step explanation:

t=\frac{k}{k-2} \\t(k-2)=k\\tk-2t=k\\-2t=k-tk\\-2t=k(1-t)\\\frac{-2t}{1-t}=k\\k= \frac{-2t}{1-t}

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3 years ago
80 students took a math test. If 44 students passed the test. What percent passed?
leva [86]

Answer: 55% of the students passed the math test

Step-by-step explanation: The fraction \frac{44}{80} represents the number of students who passed the math test out of all the students that took the test.

To find out what percent of the students that took the math test passed, we can turn the fraction \frac{44}{80} into a percent.

To write a fraction as a percent, first remember that a percent is a ratio of a number to 100. So to write \frac{44}{80} as a percent, we need to find a fraction that is equivalent to \frac{44}{80} with a 100 in the denominator. We can do this by setting up a proportion.

\frac{44}{80} = \frac{n}{100}

Now, we can use cross products to find the missing value.

4,400 = 80n

÷80      ÷80

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Therefore, 55% of the students that took the math test passed it. This should make sense because 40/80 would be half and 44 students is only a little over 50%.

4 0
3 years ago
If x = 3 + 2√2, then the value of (x - 1/x) is<br><br> a) 4√2<br> b) 2√4<br> c) 8
vitfil [10]
Your answer is: A. 4/2

Hope this helps and happy holidays!!
5 0
3 years ago
A $ 140 jacket is on sale for 35% off. what is the sale price of the jacket
zvonat [6]

Answer:

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If a jacket is on sale for 35% off, that means that the price of the jacket is % of its original price.

We can find 65% of 140 by making 65% into a decimal - 0.65, then multiply it by 140.

Hope this helped!

3 0
3 years ago
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