A bag contains 9 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color?That would be the probability of two reds PLUS the probability of two blues.
The probability of two reds is (9/21)(8/20) = 72/420 The probability of two blues is (12/21)(11/20) = 132/420. The sum is 204/420 = 51/105 = 45.87% A magician asks you to pick a card, any card from a standard deck of 52 cards. What is the probability of picking an ace?
A magician asks you to pick a card, any card from a standard deck of 52 cards. What is the probability of picking an ace?
lucy fills a pot with a mixture of 1200 black beans and 300 white beans, all the same size. When she grabs a handful of 15 beans, she finds that 10 are black. What is the probability of choosing a white bean?

Answers

Answer 1

Answer: Since you already answered the first question, I'll answer the other two

1. There are four aces and 52 cards. Just divide 4 by 52 to get 1/13, or about 7.69%.

2. If you mean the probability of choosing white from the handful, that's (15-10)/15, or 1/3 (33.33%). However, in the mixture itself (combined with the handful), that's 300/1500, or 20%.

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If f(x) varies directly with x and f(x) = 2 when x = 10, then what is the value of f(x) when x = 40?a.8b.45c.200d.320
Pls help me my homework is due tomorrow lol

I’m having trouble with this one as well

Answers

The answer here would be

x = 21, y = 25

Help pls! will give brainliest!

find the percent markdown of 175.80-141.27

Answers

Answer:

141.2/175.8=.803185

1-.803185=.1968=20% markdown

ples give brainliest! :D

The quantity q varies inversely with the square of m and directly with the product of r and x. When q is 2.5, m is 4 and the product of r and x is 8. What is the constant of variation?5/8
5/4
5
10

Answers

Answer: Third option is correct.

Step-by-step explanation:

Since we have given that

The quantity q varies inversely with the square of m and directly with the product fo r and x.

According to question,

$q=k(rx)/(m^2)\n\n\text{ where k denotes constant of variation}$

Since q=2.5, m=4, rx=8,

So, we put the value of all of theses in our above relation:

$q=k(rx)/(m^2)\n\n2.5=k(8)/(4^2)\n\n2.5=k(8)/(16)\n\n2.5=k(1)/(2)\n\n2.5* 2=k\n\n5=k$

Hence, Third option is correct.

q = k * (r*x)/m^2 ⇒ k = q*m^2 /(r*x)

k = 2.5 (4)^2 / 8 = 5

Answer: 5

Convert 4 . 5 4.5 yards to inches. 4.5 yd = __ in. 4.5 yd = __ in.O A.1.5
O B.54
O C.144
O D.162

help!!!!!!!!

Answers

Answer:

C. i think

Step-by-step explanation:

A square pyramid is shown. What is the surface area? A square based pyramid, with bases labeled 3.5 centimeters and side length of triangle labeled 7 centimeters.

19.25 cm2
30.625 cm2
49.625 cm2
61.25 cm2

Answers

Given:
square based pyramid = 3.5 cm base
side length = 7 cm

Base Area = (3.5cm)² = 12.25cm²

Surface Area = Base Area + 2sl = 12.25cm² + (2 * 3.5cm* 7cm)
S.A = 12.25 cm² + 49 cm²
S.A = 61.25 cm²

Answer:

61.25 thank you next

Step-by-step explanation:

Which is least like the others: rotator, deified, race car, alright

Answers

The correct answer is "alright". This is the only word in this list that is not a palindrome (a word that is the same forward and backward).

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How are the two functions f(x) = 0.7(6)x and g(x) = 0.7(6)–x related to each other?