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pshichka [43]
3 years ago
12

kelly bought 8 apples, 3 pears, and 13 oranges and brought them home in a grocery bag. If she picks one from the bag with out lo

oking, what is the probability of choosing an apple? a pear? or an orange?

Mathematics
1 answer:
Alisiya [41]3 years ago
7 0
Apple-33% chance
Pear-12.5% chance
Orange-54.2% chance
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Nita uses 1/2 of a class period to read 1/12 of a book. How many periods must be set aside if she is to read the entire book?
strojnjashka [21]

Answer: 6 class periods

Step-by-step explanation: If she reads 1/12 of the book and 1/12 times 12 is equal to 1 then it will take 12 classes

hope this helps mark me brainliest if you can

3 0
3 years ago
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A drawer contains quarters and nickels. There are 200 total coins valuing $30.00. Think about a system of equations that can be
Margaret [11]

Answer:

100

Step-by-step explanation:

Let n and q represent the numbers of nickels and quarters, respectively. A suitable system of equations is ...

  n + q = 200 . . . . . . there are 200 coins in the drawer

  5n +25q = 3000 . . .their value is $30.00

For mixture problems like this, it is often a good idea to substitute for the variable representing the contributor of lower value. That is, we want to write an expression for n that we can use for substitution.

Using the first equation to solve for n, ...

  n = 200 - q

Substituting this into the second equation gives ...

  5(200 -q) +25q = 3000

  1000 +20q = 3000 . . . . . . simplify

  20q = 2000 . . . . . . . . . . . . subtract 1000

  q = 100 . . . . . . . . . . . . . . . . divide by 20

  n = 200 -q = 100 . . . . . . . . the number of nickels, as we want

_____

<em>Comment on the solution</em>

We solved for q, then had to do an extra step to find the value of n that the problem asks for. Had we written q = 200-n and used that for substitution, we would have ended with the equation -20n = -2000. This would give the answer for n directly (with no additional steps required).

Sometimes working with negative numbers is uncomfortable or results in errors, so we chose to use the solution method that would avoid negative numbers.

___

<em>Comment on the problem statement</em>

We are told about coins in a <u>drawer</u>, and we are asked about coins in a <u>jar</u>. There is not enough information to answer the question asked. We have had to assume that both refer to the same quantity of coins—an assumption that is not supported by anything in the problem statement.

8 0
3 years ago
Read 2 more answers
Clare made $160 babysitting last summer. She put the money in a savings account that pays 3% interest per year. If Clare doesn't
N76 [4]

Answer:

I believe its $5492.99

Step-by-step explanation:

First I divided $160 by 3%.

Than I multiplied my answer by 1.03.

4 0
3 years ago
Read 2 more answers
The diameter of the larger circle is 10.5 cm. The diameter of the smaller circle is 4.5 cm.
blondinia [14]
4.5 / 2 = 2.25cm radius for the smaller circle

3.14 (pi) × 2.25² = 15.89625cm²

10.5 / 2 = 5.25cm radius for the larger circle

3.14 × 5.25² = 86.54625cm²

86.54625 - 15.89625 = <span>70.65cm</span>² 

The answer is 70.7cm².
3 0
3 years ago
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The pen for Ruth’s dog is 7 feet long and 6 1/2 feet wide. Her friend Ralph’s dog pen is 14 feet long and 6 1/2 feet wide. How m
Mkey [24]

Answer:

2 times larger

Step-by-step explanation:

Ralph's pen is 91 feet long

ruths is 45.5

Easily makes 91

7 0
2 years ago
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