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Nitella [24]
3 years ago
9

a spinner has 3 blue sections, 5 red sections and 4 green sections. it is spun 24 times. you would expect it to land on red 10 t

imes. is this true or false
Mathematics
1 answer:
Pie3 years ago
7 0

Answer:

False

Step-by-step explanation:

The total number of sections is 12

3 blue sections, 5 red sections and 4 green sections

P(red) = 3 red/ 12 total = 1/4

Spin 24 times

24 * P (red) = 24*1/4 = 6

We would expect 6 red spins

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Which is greater 3/5 or 7/10
ZanzabumX [31]

Answer:

7/10

Step-by-step explanation:

Use the butterfly method:

3/5 7/10

multiply the denominator and numerator to each other sides:

3 * 10 = 30

5 * 7 = 35

35 > 30

35 belongs to 7/10 so:

7/10 is greater

3 0
3 years ago
The U.S. population in 1910 was 92 million people. In 1990, the population was 280 million. This could either be a linear or exp
HACTEHA [7]

Answer:

The linear model means that there is a uniform increase and in this case of US population from  92  million people in  1910  to  250  million people in  1990 .  

This means an increase of  250 − 92 = 158  million in  1990 -1910 = 80  years or   158 80 = 1.975  million per year and in  x  years it will become   92 + 1.975 x  million people. This can be graphed using the linear function  1.975 ( x − 1910 ) + 92 ,

graph{1.975(x-1910)+92 [1890, 2000, 85, 260]}

The exponential model means that there is a uniform proportional increase i.e. say  p %  every year and in this case of US population from  92  million people in  1910  to  250  million people in  1990 .  

This means an increase of  250 − 92 = 158  million in  1990 − 1910 = 80  years or  

p %  given by  92 ( 1 + p ) 80 = 250  which gives us  ( 1 +p ) 80 = 250 92  which simplifies to  p = ( 250 92 ) 0.0125 − 1 = 0.0125743  or  1.25743 % .  

This can be graphed as an exponential function  92 × 1.0125743 ( x − 1910 ) , which gives population in a year  y  and this appears as graph{92(1.0125743^(x-1910)) [1900, 2000, 85, 260]}

Step-by-step explanation:

Hope this helps

3 0
3 years ago
What is the y-intercept of this line shown
Korvikt [17]
The y intercept is 3 because the line intercepts the y axis at 3.

:D
6 0
3 years ago
Read 2 more answers
There were 20 dogs and 30 cats at an animal shelter last month. Since then, the number of dogs in the shelter
Softa [21]

Answer:

There is a 4% decrease

Step-by-Step:

if the previous total was 50, then each animal represents 2%. 50*2=100. if you are increasing the dogs by 20% of 20, then you are increasing them by 4 equaling out to 24 dogs. If your decreasing the cats by 20% of 30, then you are decreasing them by 6 equaling out to 24 cats. The new total of animals is now 48. Seeing how each animal still represent 2%, the new percentage is 96%. Subtracting the previous percentage from the new percentage gives a 4% difference.

50 * 2 = 100%

20 * 1.2 = 24

20 * .8 = 24

24 + 24 = 48

48 * 2 = 96%

100% - 96% = 4%

4 0
3 years ago
Read 2 more answers
3+10÷5-4 i need help on math​
OLga [1]

The answer is one because...

3+10÷5-4

3+2−4

5−4=1

8 0
3 years ago
Read 2 more answers
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