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blondinia [14]
3 years ago
13

There are 220 students in Year 9

Mathematics
1 answer:
e-lub [12.9K]3 years ago
5 0

Answer:

132 and 88

Step-by-step explanation:

If there are 20% more boys than girls, then this means that the total percentage of boys us 60% and girls is 40%.

0.6 * 220 = 132

0.4 * 220 = 88

There are 132 boys and 88 girls in year 9

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The stem-and-leaf plot shows the points scored by Jason in nine basketball games.
Pepsi [2]

Considering the given stem-and-leaf plot, the outlier is given by:

A - 40

<h3>What is an stem-and-leaf plot?</h3>

The stem-and-leaf plot lists all the measures in a data-set, with the first number as the key, for example:

4|5 = 45.

Outliers are usually the lowest or the highest value in the data-set. In this problem:

  • The lowest value is 10, but the second lowest is 12, which is close to 10.
  • The highest value is 40, but the second lowest is 34, which is farther to 40 than 12 is to 10, hence 40 is an outlier.

More can be learned about stem-and-leaf plots at brainly.com/question/27683035

#SPJ1

7 0
2 years ago
Someone help me with this pls
Mumz [18]

Answer:

There will be approx 283908 hits.

Step-by-step explanation:

A website had 342,000 hits in 2011.

This is a decline of 2.3% from the previous year.

Decline rate = 2.3% or 0.023

So, increase rate will be 1-.023=0.977

Time = 2019-2011=8

We can calculate the answer as:

342000\times(0.977)^{8}

= 342000\times0.83014

= 283907.88 rounding to 283908.

Therefore, there will be approx 283908 hits.

4 0
3 years ago
Please help..not too sure on how to work this out.
lina2011 [118]

Answer and Step-by-step explanation:

Ok, it's basically just parts of a circle circumference and area equation. Let's start first by writing down both equations.

C = 2πr

C = πd

A = πr^{2}

Now, all we have to do is plug in the values into those equations!

4. C = 2π(12)                  A = π(12^{2})

r = 12

d = 24     <---- (12 times 2 equals 24)

C = 24π

A = 144π   <---- (12 times 12 (itself) equals 144)

5. C = π4.8                  A = π(4.8^{2})

r = 2.4            <------- (4.8 divided by 2 equals 2.4)

d = 4.8

C = 4.8π

A = 23.04π    <------- (4.8 times 4.8 equals 23.04)

6.  20π = 2πr                  A = πr^{2}

r = 10            <------- (20π divided by π and divided by 2)

d = 20          <------- (20π divided by π)

C = 20π

A = 100π    <------- (10 times 10 equals 100)

7.  C = 2πr                  81π = πr^{2}

r = 9            <------- (81π divided by π and square rooted equals 9)

d = 18          <------- (9 times 2 equals 18)

C = 18π      <------- (2 times 9 equals 18, times π)

A = 81π

#teamtrees #WAP (Water And Plant) #ELM (Every Life Matters)

6 0
2 years ago
OK yall i need help with this.I honestly hate geometry.Seriously.I need good student with good explanation skills.Ill mark brain
jonny [76]

Answer:

Step-by-step explanation:

In parallelogram, opposite sides are parallel and equal

3x + 7 = 5x -17  

3x - 5x = -17 - 7

-2x = - 24

x = -24 /-2

x = 12        

3 0
3 years ago
Over the first five years of owning her car, Gina drove about 12,100 miles the first year, 15,758 miles the second year, 12,200
grandymaker [24]
To find the mean, add up all of the miles and divide by the number of years.  12100 + 15758 + 12200 + 11800 + 12750 = 64608.   64608/5 = 12921.9.  The mean (the average) is 12,921.9 miles.

To find the median, put the numbers in order and find the middle number.  The middle number is 12200.  The median (middle number) is 12,200 miles

To find the mode, you would look for the number that is repeated the most.  In this data set, no number repeats, so there is no mode.  There is no mode for this data set.

The mean (average) would be the best measure of central tendency to predict how many miles Gina will drive in the sixth year.

I hope this helps! Can I have Brainliest, please? :)

4 0
3 years ago
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