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
PIT_PIT [208]
3 years ago
5

leona has 4 nickles,6 pennies, 4 dimes, and 2 quarter in a change purse.Leona lets her little sister pick a coin at random.if da

isy is equally likely to pick each type coin,what is the probability that her coin is worth more than five cents?Explain
Mathematics
1 answer:
victus00 [196]3 years ago
4 0
The probability would be 6/16 or 37.5% because there are 16 coins in total and 6 of them are worth more than 5 cents. :)
You might be interested in
After learning the theoretical probability of a two sided coin landing on any one side, students work in groups to flip the coin
Bumek [7]
The answer c, because they got 9 out of 15 flips being heads. This probability is 0.6. The other answers are not accurate.
3 0
3 years ago
What is the equation for the line of reflection <br>a. x= 3 <br>b. y = 3 <br>c. y = x <br>d. x = 6​
Stells [14]

Answer:

The answer to that question is c. y = x

8 0
3 years ago
there are n counters in a bag. 4 of the counters are red and the rest are blue. Ross takes a counter from the bag at random and
Ainat [17]

Answer: n = 10.

Step-by-step explanation:

In the bag, we have n counters.

4 of the counters are red.

the rest are blue, then we have:

(n - 4) blue counters.

Now, the probability that Ross takes a blue counter from the bag is equal to the quotient between the number of blue counters (n - 4) and the total number of counters, n

Then the probability is:

p1 = (n - 4)/n

Now he draws another, and it must be blue again, then we can calculate the probability in the same way as above, but he already take a blue counter, so the number of blue counters is (n - 5) and the total number of counters is (n - 1)

The probability of this event is:

p2 = (n - 5)/(n - 1)

The joint probability (the probability that Ross takes two blue counters) is equal to the product of the individual probabilities, and we know that this is equal to 1/3, then we have the equation:

1/3 = ( (n - 4)/n)*((n - 5)/(n - 1))

Now let's solve this for n.

n*(n - 1)/3 = (n - 4)*(n - 5)

(n^2 - n)/3 = n^2 - 4*n - 5*n + 20

n^2 - n = 3*(n^2 - 9*n + 20)

n^2 - n = 3*n^2 - 27*n + 60

0 = (3*n^2 - n^2) - 27*n + n + 60

0 = 2*n^2 - 26*n + 60

The two solutions of this equation can be found with Bhaskara's equation:

n = \frac{-(-26) +- \sqrt{(-26)^2 - 4*2*60} }{2*2} = \frac{26+- 14}{4}

Then the two solutions are:

n = (26 - 14)/4 = 3

This is not an option, because we know for sure that we have 4 red counters, then this option can be discarded.

The other solution is:

n = (26 + 14)/4 = 40/4 = 10

Then we have n = 10, 10 counters in total.

4 0
3 years ago
What is the sum of the number of faces the number of vertices and number of edges
scoray [572]

Answer:

There are 5 faces, 5 vertices, and 8 edges, so all of that together is 18

8 0
3 years ago
Read 2 more answers
Factor the polynomial: 2x(x - 4) + 7(x-4)
mojhsa [17]

Answer:

(x - 4)(2x + 7)

Step-by-step explanation:

Given

2x(x - 4) + 7(x - 4) ← factor out (x - 4) from each term

= (x - 4)(2x + 7)

7 0
3 years ago
Other questions:
  • Use long division to find a repeated decimal equivalency for the fraction 6/9
    6·2 answers
  • X + 5y = 28 2x + 3y = 21 Solve for x and y.
    8·1 answer
  • Over a two-hour time period, a snail moved 108 inches. How far is this in yards?
    13·1 answer
  • Which equation of the line that is parallel to the line 5x + 2y =12 and passes through point -2,4
    12·1 answer
  • Suppose a large population has a mean μand standard deviation σ, and a simple randomsample of size nis taken. The sampling distr
    8·1 answer
  • What ordered pair is closest to a local minimum of the
    10·1 answer
  • 50 points and I’ll mark you brainiest if correct.
    12·1 answer
  • Help please thank you
    15·1 answer
  • Free BRAINLESS it could be youea​
    15·1 answer
  • Quadrilateral abcd has vertices A(4,0),B(3,3),C(-3,1) and D(-2,-2)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!