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3 years ago

Q and R are independent events. P(Q) = 0.4; P(Q AND R) = 0.08. Find P(R).

1 answer:

8 0

Because Q and R are independent, you have

$\mathbb P(Q\cap R)=\mathbb P(Q)\times\mathbb P(R)$
$0.08=0.4\times\mathbb P(R)$
$\implies \mathbb P(R)=0.2$

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The ratio of the of a circle to its A}. Radius, Diameter, or Circumference to its B} Diameter, circumference, radius? approximat

nekit [7.7K]

The ratio of the circumference what is 2pir so for A. is right circumference and for B. is right diameter what is 2r because the ratio of circumference and diameter is equal 2pi*r/2r = pi so 3,14

so C/D = 2pir/2r = pi so 3,14

hope this will help you

4 0

3 years ago

The length of a rectangle is times the width. If the perimeter is 32 inches, what is the width of the rectangle

o-na [289]

Let width be “w", length = “l" and perimeter = p

Then l = 3w-4

Perimeter = 2(w+l)

p = 2(w+3w-4) = 2w+6w-8 = 8w-8

Perimeter is 32…

8w-8 = 32

8w = 32+8

8w = 40

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l = (3×5)-4 = 11

Check… p = 2(5+11) = 2 × 16 = 32

Ans = length is 11

Hope it helps!

5 0

3 years ago

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Help me out with these please! No links to suspicious sites!

weeeeeb [17]

Answer:

1) N = 2. 2) -7/3

Step-by-step explanation:

6 = 3n

6/3 = n

2 = n

n = 2

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3t = -3 - 4

3t = -7

T = -7/3

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3 years ago

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Kaapo is mixing Kona beans and Maui beans to make 25 pounds of coffee blend. Kona beans cost Kaapo $15 per pound and Maui beans

son4ous [18]

Answer:

Kaapo will use 17.5 pounds of Kona beans and 7.5 pounds of Maui beans for his blend to cost him $ 17.70 per pound.

Step-by-step explanation:

1. Let's review the information given to us to answer the problem correctly:

Number of pounds of the coffee blend = 25

Cost of Kona beans = US$ 15 per pound

Cost of Maui beans = US$ 24 per pound

Cost of the coffee blend = US$ 17.70 per pound

2. How many pounds of each coffee bean should Kaapo use for his blend to cost him $17.70 per pound?

Let's build our equation to answer the question, this way:

x = Number of pounds of Kona beans for Kaapo's blend

25 - x = Number of pounds of Maui beans for Kaapo's blend

Number of pounds of Kona beans for Kaapo's blend * Cost of Kona beans + Number of pounds of Maui beans for Kaapo's blend * Cost of Maui beans = Number of pounds of the coffee blend * Cost of the coffee blend

Replacing with the real values, we have:

15x + 24 (25-x) = 17.70 * 25

15x + 600 - 24x = 442.50

-9x = 442.50 - 600

-9x = -157.50

x = -157.50/-9

x = 17.50 ⇒ 25 - x = 7.50

Kaapo will use 17.5 pounds of Kona beans and 7.5 pounds of Maui beans for his blend to cost him $ 17.70 per pound.

8 0

3 years ago

Describe the different types of results that will occur when performing Transformations on equations that have one solution no s

lutik1710 [3]

This is a very broad question. When performing rotations, if there was an infinite amount, there will now be 1 solution, and if there were no solutions, there will be one now. Vice versa. With transforming as in moving, one with no solutions might have an infinite amount, and one with a single solution will have a different solution

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3 years ago

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