Ask question

Ask question

All categories

soldi70 [24.7K]

3 years ago

10

Joni's jar of 10 marbles contains 2 red, 3 blue, and 5 yellow marbles. How many red marbles would Joni need to add to the jar, s

o that 1/3 of the marbles are red?

1 answer:

FinnZ [79.3K]3 years ago

8 0

2 more red marbles would need to be added, so there are 4 red, 3 blue, and 5 yellow. 4/12 are red, and that reduces to the desired ratio of 1/3 (:

You might be interested in

In a recent survey, 64 % of the community favored building a police substation in their neighborhood. If 14 citizens are chosen,

kozerog [31]

Answer: 0.1840

Step-by-step explanation:

The binomial probability formula :-

$P(X)=^nC_x\ p^x(1-p)^{n-x}$ , here n is the number total of trials , p is the probability of getting success in each trial and P(x) is the probability of getting success in x trial.

Given : The probability of the community favored building a police substation in their neighborhood = 0.64

If 14 citizens are chosen, then the probability that exactly 8 of them favor the building of the police substation will be :-

$P(8)={14}^C_{8}\ (0.64)^{8}(1-0.64)^{14-8}\\\\=\dfrac{14!}{8!6!}\times(0.64)^8(0.36)^{6}\\\\0.183996740126\approx0.1840$

Hence, the probability that exactly 8 of them favor the building of the police substation = 0.1840

5 0

3 years ago

A square is 3 centimeters by 3 centimeters. What are the dimensions of a similar square with sides that are three times that siz

Serjik [45]

Answer:9 cm by 9cm

Step-by-step explanation: 3*3=9

5 0

3 years ago

What the mean "let bygone be bygone"

Galina-37 [17]

Answer:

let the past stay in the past

Step-by-step explanation:

8 0

3 years ago

Find the value of x in the given parallelogram. Only write the number value of x. *

aniked [119]

Answer:

10

Step-by-step explanation:

7 0

3 years ago

Please answer the question from the attachment.

alekssr [168]

The correct answer is 43.75

5 0

3 years ago