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
rjkz [21]
3 years ago
15

Jenny had 7 dimes and 3 pennies in her She takes a coin out from her pocket, looks at the coin and then replaces it her pocket b

efore she removes a second coin. What is
the probability she will not take out a penny both times?

F. 3/10

G. 9/100

H. 49/100

J. 21/100
Mathematics
1 answer:
alisha [4.7K]3 years ago
4 0
<h3>Answer:     49/100</h3>

=========================================================

Explanation:

There are 7 dimes and 3 pennies, leading to 7+3 = 10 coins total.

The probability of not picking a penny is 7/10. If the first coin is put back, then the probability doesn't change for the second selection.

The probability of getting two dimes is (7/10)*(7/10) = 49/100 when the first coin is replaced.

If the first coin is not replaced, then the answer would be (7/10)*(6/9) = 42/90 = 7/15

You might be interested in
What’s the equation for this table? Use y=mx+b. HELP
Verdich [7]

Answer:

y = 2x + 12

Step-by-step explanation:

You can check this by plugging any of the values from the table into the equation. You can find the answer by finding the slope and then using that to find the y-intercept.

y2-y1/x2-x1  

16-14/2-1 = 2/1 = 2. So our slope equals 2.

If we set x = 0 to find our y-intercept, and we know that we have a slope of 2 we can subtract 2 from 14 to get the y-intercept.

14-2 = 12. --> (0, 12) which is true because we know that the slope is 2.

3 0
3 years ago
A yellow ribbon is 56 centimeters long. It is twice as long as a green ribbon. A brown ribbon is 4 times as long as the green ri
Shkiper50 [21]

56 dived by 2 equals 28. 28=green ribbon. Brown ribbon is 4 times as long. 28 times 4 equals 112. The brown ribbon is 112 cm long.

6 0
3 years ago
What is the source of Yangtze river​
belka [17]

Answer:

Qinghai

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP ME WITH THIS PROBLEM!!
Veronika [31]
Your answer would be 24, so you got it right.

This is because you need to find the lowest common multiple of 6 and 8, that is, the lowest number that divides by both 6 and 8.

We can do this by either writing out the multiples of 6 and 8 until you find a common one, or you can find the prime factors of 6 and 8 and multiply them:

6-> 3 × 2
8-> 2 × (4)->2 × 2

So we would need to do 3 × 2 × 2 × 2 = 3 × 8 = 24

I hope this helps!
4 0
3 years ago
Khianna wants to make a batch of her Grandma chocolate chip cookies from a friend. The recipe is shown on the recipe card below
romanna [79]
Poor <span>Khianna.  Let's help her out.

For the original recipe she needs </span>1 \frac 1 2 = \frac 3 2 cups of brown sugar but only has 1 \frac 1 8 = \frac 9 8 .  So the fraction of the brown sugar she has is

\dfrac{ \frac{9}{8} }{\frac 3 2} = \frac 9 8 \times \frac 2 3 = \frac 3 4

She has to scale everything by a factor of  \frac 3 4

I won't multiply everything by 3/4 for you.  2 cups butter becomes 1 and a half cups butter, 1 tsp vanilla becomes 3/4 tsp, etc.


8 0
3 years ago
Other questions:
  • Please help, operation with rational numbers XXIV
    14·1 answer
  • How does the volume of the cylinder compare to the volume of the cone
    10·1 answer
  • 3,9,7,21,19,57.55,165 what is the last number?
    9·1 answer
  • Y=3x+5 and y=3x-10
    6·1 answer
  • If QR = 6x + 1, PR = 14x-13, and PQ = 5x -2, find PR.
    8·1 answer
  • Find the Volume of this Triangular Prism ​
    12·1 answer
  • How to solve the equation 3x - 2y = 6 for y in terms of x
    8·1 answer
  • Whats the answer for 2x + 1 + 7x ?
    7·2 answers
  • 4x + 5y = -2 . what is the slope show ur work
    6·1 answer
  • Line s has an equation of y=1/3-X-5. Line t is perpendicular to line s and passes through (-2, 9). What is the equation of line
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!