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Anna [14]
3 years ago
15

Suppose there are 8 blue, 4 green, 11 yellow, and 7 red buttons in a bag. If you randomly pick out one button, what is the proba

bility it is red or green?
Mathematics
2 answers:
STALIN [3.7K]3 years ago
5 0
11/29 i believe. Cuz you add them all together and get 29 and then red and green added together is 11 
hichkok12 [17]3 years ago
3 0

Answer: \dfrac{11}{30}

Step-by-step explanation:

Given : The number of red buttons = 7

The number of green buttons = 4

The total number of buttons = 8+4+11+7= 30

The probability of picking a red button is given by :-

P(R)=\dfrac{\text{Red buttons}}{\text{Total buttons}}\\\\=\dfrac{7}{30}

The probability of picking a green button is given by :-

P(G)=\dfrac{\text{Green buttons}}{\text{Total buttons}}\\\\=\dfrac{4}{30}

Since both the events are independent then the the probability it is red or green is given by :-

P(R\cup G)=P(G)+P(R)\\\\=\dfrac{4}{30}+\dfrac{7}{30}=\dfrac{11}{30}

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Find the circumference of the circle shown below if the diameter equals 20 inches. Use 3.14 for π
Tanzania [10]

Answer:

62.8 inches

Step-by-step explanation:

c = πd

c = 3.14 * 20

c = 62.8 inches

4 0
3 years ago
Evaluate the square root of x^2 - 5x when x = 7. Round your answer to the nearest hundredth
Troyanec [42]
X^2-5x, given x=7,

(7)^2-5(7)=14

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5 0
2 years ago
Read 2 more answers
charles deposited $12,000 in the bank. He withdrew $5,000 from his account after one year. If he recives a total amount of $9,34
Schach [20]

Answer:

The rate of simple interest is 9%

Step-by-step explanation:

* Lets talk about the simple interest

- The simple Interest Equation (Principal + Interest)  is:

  A = P(1 + rt)  , Where

# A = Total amount (principal + interest)

# P = Principal amount

# I = Interest amount

# r = Rate of Interest per year in decimal r = R/100

# R = Rate of Interest per year as a percent R = r * 100

# t = Time period involved in months or years

- The rule of the simple interest is I = Prt

* lets solve the problem

- Charles deposited $12,000

∴ P = $12,000

- He withdrew $5,000 from his account after one year

- He receives a total amount of $9,340 after 3 years

∴ A = $9340 and t = 3

- Lets find the inetrest after 1 year

∵ I = Prt

∵ P = 12000

∵ t = 1

∴ I = 12000(r)(1) = 12000r

- Lets subtract the money that he withdrew

∵ He withdrew $5000

∵ He deposit at first 12000

∴ He has after the withdrew 12000 - 5000 = 7000

- The new P for the next 2 years is 7000

- This amount will take the same rate r for another two years

- The total money is $9340

∵ I = A - P

∵ A = 9340

∵ P = 7000

∴ The amount of interest = 9340 - 7000 = 2340

- The amount of interest after 3 years is 2340

- Lets find the amount of interest in the two years

∴ I = 7000(r × 2) = 14000r

- The amount of interest after the 3 years is the sum of the interest in

  the 1st year and the other 2 years

∴ 2340 = 14000r + 12000r

∴ 2340 = 26000r ⇒ divide both sides bu 2340

∴ r = 2340 ÷ 26000 = 0.09

∵ The rate R in percentage = r × 100

∴ R = 0.09 × 100 = 9%

∴ The rate of simple interest is 9%

8 0
2 years ago
PLEASE HELP THIS IS MATH 171 the topic is partial fraction decomposition
mars1129 [50]

What do you mean? Where is the question?

8 0
2 years ago
Can somebody help me please​
GuDViN [60]

Answer:

x: (3,0)

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Step-by-step explanation:

x intercept is where the line crosses the x axis

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