Answer:
Probability of picking Red ball is 27.5%
Step-by-step explanation:
Given:
Total Number of balls = 200
Number of White balls = 100
Number of Red balls = 55
Number of Black balls = 45
We need to find the probability of the ball picked to be red.
Solution:
Now we know that;
Probability is equal to number of Possible Outcomes divide by total number of Outcomes multiplied by 100.
framing in equation form we get;
Hence Probability of picking Red ball is 27.5%.
11) 2x+6y-3; x=5,y=4
the question is asking to evaluate for y when x=5 and evaluate for x when y=4,
2x+6y-3
2x+6y=3
2(5)+6y=3
10+6y=3
6y=3-10
y=-7/6 when x=5
2x+6(4)=3
2x+24=3
2x=3-24
x=-21/2 when y=4
12)
Input Output
N 4(n+3)
12 4(12+3) = 4(15)=60
14 4(14+3)=4(17)=68
18 4(18+3)=4(21)=84
25 4(25+3)=4(28)=112
13)8x+y-10; x=4, y=50
8x+y=10
8(4)+y=10
32+y=10
y=10-32
y=-22 when x=4
8x+50=10
8x=10-50
8x=-40
x=-40/8
×=-5/1=-5 when y=50
14) b is correct
15)c is correct
16) c is correct
If you need explanations on these questions, message me.
Answer:
3 3/4
Step-by-step explanation:
8 times 3 is 24
30-24 is 6
which is 6/8
reduce the fraction to 3/4
Start by ordering your data, the pages in each chapter, from smallest to largest - that way you can read it better:
9, 13, 15, 15, 17, 17, 18, 19, 20, 22, 24, 25
A histogram represents the data using a range of values on the x axis (number of pages). For your histogram, the ranges are 0-9, 10-19, and 20-29. On the y axis (number of chapters), you fill in the bar up to how many chapters fall into each of the ranges. You're given data that tells you how many pages are in each chapter, with each data value being a chapter, so just count up how many data values fall into each of the ranges:
For 0-9 pages: 1 chapter (9)
For 10-19 pages: 7 chapters (13, 15, 15, 17, 17, 18, 19)
For 20-29 pages: 4 chapters (20, 22, 24, 25)
Now look at the histograms you're given. Find the one that has the bar filled up to 1 chapter for 0-9 pages, 7 chapters for 10-19 pages, and 4 chapters for 20-29 pages.
Your answer is B.