There were 24 boys and 20 girls in a chess club last year. This year the number or boys increased by 25% but the number of girls decreased by 10%. Was there an increase or decrease in overall membership?
Answers
ok so find increase and decrease
25%=1/4
10%=1/10
24 TIMES 1/4=6
increase by 25%
24+6=30
girls decrease by 1/10
20 times 1/10=2
20-2=18
38+18=48
48>44
increase
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Please Help! :)The following table shows the number of hours some high school students in two states spend surfing the Internet each week: State A 35 36 35 34 35 38 36 36 38 State B 24 22 20 50 25 24 65 25 26 Part A: Create a five-number summary and calculate the interquartile range for the two sets of data. (6 points) Part B: Are the box plots symmetric? Justify your answer. (4 points)
Rearrange the formula to make n the subject:t = a+(n-1)d
Answers
The way to tackle this, is to first add up the ratio's.
So 4+8 = 12. Now this 12 is important as this is total number of shares (bunches) we need to allocate to 2 different flower colours.
Before we can know how much flowers = 4 and 8 bunches. We first need to work out how many flowers = 1 bunch.
It's simple.
108 (total number of flowers) ÷ 12 (bunches of flowers) = 9 flowers per bunch.
So if 1 bunch = 9 flowers.
4 : 8
= (4 bunches x 9 flowers) : (8 bunches x 9 flowers)
Which leads to...
36 purple : 72 black
4 + 8 = 12
108 / 12 = 9.
9 x 4 = 36.
36 of the flowers are purple.
Answers
The chance is not pretty big. It's pretty small.
The chance of guessing the first card correctly is (1/52) = 0.0192
The chance of guessing the 2nd card correctly is (1/51) = 0.0196
The chance of guessing the 3rd card correctly is (1/50) = 0.02
The chance of guessing the 4th card correctly is (1/49) = 0.0204
The chance of guessing the 5th card correctly is (1/48) = 0.0208
The chance of guessing the 6th card correctly is (1/47) = 0.0217
The chance of guessing the 7th card correctly is (1/46) = 0.0217
The chance of guessing the 8th card correctly is (1/45) = 0.0222
The chance of guessing the 9th card correctly is (1/44) = 0.0227
The chance of guessing the 10th card correctly is (1/43) = 0.0233
.
.
.
and you keep going like that. Then the chance of guessing ALL of them
correctly is the product of all of the individual chances.
After the first ten, listed above, you're already down to
0.00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 0712 .
You're not even 1 tenth of the way through the deck yet, and it just keeps
getting smaller as you keep going.
The chance of guessing the first 10 correctly is ( 42 ! ) / ( 52 ! ) .
That's the number I just wrote up there, with 51 zeroes after the decimal point.
The chance of guessing the whole deck correctly is 1 / ( 52 !) .
That number starts out with roughly 51 more zeroes.
You might say that it's roughly 1 percent of 1 "googoleth".
My estimation is: It's almost identical to zero.
Answers
Answer
46.24
Explanation
n² = n × n
∴ (-6.8)² = (-6.8) × (-6.8)
= 46.24
The answer is positive since (-1)×(-1) = 1.
-6.8^2
You can do this with a calculator or pen and paper.
With a calculator;
-6.8 squared = 46.24 (Notice that the answer is positive!)
Don’t understand how to make a function with inconsistent points.
Answers
When you look at the scatter plot, you use the numbers in that for the numerator and denominators of your equation, then you evaluate from there and simplify your equation.
-4x+3y=-3
A.
(0, 4)
B.
(6, 2)
C.
(3, 3)
D.
(0, −1)
Answers
-4x+3y=-3
-x-3y= -12
-4x+3y= -3
+-------------------
-5x= -15
x=3
x+3y=12
3+3y=12
3y=9 y=3
(x,y)=(3,3)
A.
1570 mm3
B.
523.33 mm3
C.
392.50 mm3
D.
166.67 mm3