1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scilla [17]
3 years ago
10

See image for question.

Mathematics
1 answer:
Ksivusya [100]3 years ago
7 0

Answer:

Question 1

Total number of marbles = 5 + 7 + 8 = 20

(a)

  • P(red, red) = 5/20*4/19 = 1/19

(b)

  • P(white and blue) =
  • P(white, blue or blue, white) = 7/20*8/19 + 8/20*7/19 = 14/95 + 14/95 = 28/95

(c)

  • P(both same colour) = P(red,red or blue,blue or white,white) =
  • 1/19 + 8/20*7/19 + 7/20*6/19 = (20 + 56 + 42)/380 = 118/380 = 59/190

Question 2

  • P(A) = 2/9
  • P(B) = 4/11

(a)

  • P(A and B) = 2/9 * 4/11 = 8/99

(b)

  • P(not A and not B) = (1 - P(A))(1 - P(B)) = 7/9*7/11 = 49/99

(c)

  • P(A or B) = 1 - P(not A and not B) = 1 - 49/99 = 50/99
You might be interested in
Describe the error made when converting the equation to vertex form.
ale4655 [162]

Answer:

adding 36

Step-by-step explanation:

should be:

y-27=x²-12x

y-27=x²-12x

+12 +12

y-15=x²+x

y-15=x³

+15 +15

y=15x³

3 0
3 years ago
Bernice estimated that 69% of 242 is 168. Is her estimate reasonable?
ycow [4]
Her estimate is not reasonable.

Since she estimated 69%, you could do either of these options. You could...
A. Divide 242 (or .5) to show how much half off would be, then compare her estimate with half of 242 (121). OR...
B. Simply divide 242 by 69% (.69) and compaor her estimate to the exact amount (166.98).

I hope this helps!
6 0
3 years ago
The sales tax in your city is 8.8%, and an item costs $63.50. How much tax would you pay on that item?
Lilit [14]

Step-by-step explanation:

63.5*0.088 =5.588 tax for your answer

8 0
2 years ago
Age Problem. Please help. I suck at these.
eimsori [14]
Let Cynthia's age be C, then Abigail's age A

since Abigail is 8 years older, her age A = C+8.

20 years ago Cynthia's she was C-20 and Abigail was A-20=3(C-20)

A-20=3C-60
A=3C-40
but we just said A=C+8
so 3C-40=C+8
2C=48
C=24
A=24+8=32

Cynthia's age is 24 and Abigail's age is 32
7 0
3 years ago
A recipe for nut bread calls for 1/3 cup of walnuts and 2/6 cup of pecans. What is the total amount of walnuts and pecans needed
tiny-mole [99]

Answer: 2/3 cups

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • A(n) __________ is a number that the variable is multiplied by. It is usually found immediately before the variable. numerical e
    6·2 answers
  • A school orders 12 boxes of dice. Each box contains six bags of dice. Each bag contains
    13·2 answers
  • What is the answer to this question 4(5x+30)=100?
    13·1 answer
  • Between which two square roots of integers would you find pi?
    5·1 answer
  • Really need help finding the answer
    11·1 answer
  • Find the center of the circle: x2 + 2x - 3 + y2 = 5. A) (-1,0) B) (-2,3) C) (1,0) D) (2,-3)
    14·1 answer
  • A TV that usually sells for $195.72 is on sale for 20% off. If sales tax on the TV is 9%, what is the price of the TV, including
    8·2 answers
  • Jonathan worked at McDonalds 20 hours per week and earned $195. Use the equation 20h=195 to find Jonathan's hourly wage.
    7·2 answers
  • Select the correct answer.
    7·2 answers
  • Can someone help me solve this math problem?<br><br> -6 - (-13)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!