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Vera_Pavlovna
1 month ago
13

Nico owns 11 instructional piano books. Two are beginner books, six are intermediate books, and three are advanced books. If two

books are randomly chosen from the collection, one at a time, and replaced after each pick, what is the probability that he first chooses an advanced book and then chooses a beginner book?
Mathematics
1 answer:
PIT_PIT [12.4K]1 month ago
8 0
There are 2 beginner, 6 intermediate, and 3 advanced books, totaling 11.

P(advanced) = 3/11
replaced
P(beginner) = 2/11

P(both) = 3/11 * 2/11 = 6/121 <=
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Nicholas scoops a few gum balls into his bag when he weighs it he finds that he scooped 0.76 pounds how much will the gum balls
tester [12383]

Response:

The price for 0.76 pounds of gum balls amounts to $2.6448

For 1.5 pounds of sour patch kids, the cost is $5.985

Step-by-step breakdown:

Refer to the provided data.

Nicholas measures a few gum balls into his bag, discovering a total of 0.76 pounds. The price for 1 pound of gum balls is $3.48

Expressed mathematically, this is:

1 pound of gum balls = $3.48

Now, we multiply both sides by 0.76

1×0.76 pounds of gum balls = $3.48×0.76

Thus, 0.76 pounds of gum balls costs $2.6448

Nicholas decides to purchase 1.5 pounds of sour patch kids at $3.99 per poundThis can be represented as:

1 pound sour patch kids = $3.99

We multiply both sides by 1.5

1×1.5 pounds sour patch kids = $3.99×1.5

This leads to a total of 1.5 pounds of sour patch kids costing $5.985

4 0
8 days ago
Add and simplify 9/16=1/2=what
zzz [12365]
9 / 16 + 1/2 =?

Step 1. To add fractions, they must share the same denominator. Here the denominators are 16 and 2. Since 16 is 8 times 2, multiply 1/2 by 8 to match denominators.

(1 * 8) / (2 * 8) = 8 / 16

Step 2.  Add the numerators over the common denominator.

9/16 + 8/16 = (9+8) / 16 = 17 / 16

Step 3. Reduce the fraction if possible.

17/16 is already in simplest form. Therefore, 9/16 + 1/2 = 17/16
6 0
24 days ago
Read 2 more answers
Harper knows he is 50 yards from school. The map on his phone shows that the school is 34 inch from his current location. How fa
PIT_PIT [12445]

To solve this question, follow the steps outlined below:

1. Since 1 yard equals 36 inches, to convert 50 yards to inches involves:

(50)(36)=1800in

2. If he is standing 50 yards away from the school, and the map indicates that the school is 34 inches away from him, when it shows 3 inches the actual distance is:

\frac{(1800in)(3in)}{34in}=158.82in

3. If you express this back in yards:

\frac{158.82}{36} =4.41 yd

Consequently, the answer is: 158.82 inches or 4.41 yards.

8 0
1 month ago
Read 2 more answers
charlotte owns two entertainment websites. Here are some details about those websites for one entire month: Website A Website B
Zina [12379]

Response:

read below

Detailed explanation:

1) Charlotte considered two different methods to define this quantity. Identify these two definitions among the options provided.

Choose 2 answers:

Choose 2 answers:

(Choice A, Incorrect)

WRONG

Profit divided by total number of likes

(Choice B, Checked, Correct)

CORRECT (SELECTED)

Profit divided by number of writers

(Choice C, Checked, Correct)

CORRECT (SELECTED)

Profit divided by expenses

(Choice D, Incorrect)

WRONG

Expenses divided by number of writers

2) Determine which site generates the most profit per investment of resources considering both definitions. Did you achieve the same conclusion for each?

Choose 1 answer:

Choose 1 answer:

(Choice A, Incorrect)

INCORRECT

Yes. Both definitions indicate website A yields more profit per resource spent.

(Choice B, Checked, Correct)

CORRECT (SELECTED)

Yes. Based on both definitions, website B earns more profit for resources utilized.

(Choice C, Incorrect)

INCORRECT

No. The findings of the definitions conflict.

via: khan academy ®

The registered trademark symbol, ®, is a typographic symbol that provides notice that the preceding word or symbol is a trademark or service mark that has been registered with a national trademark office

7 0
1 month ago
Read 2 more answers
Ollie has installed security lights on the side of his house that are activated by a sensor. The sensor is located at point C di
Leona [12618]

Result:

20.19°

Detailed explanation:

Refer to the attached diagram related to the question. We need to determine <CAB

Utilizing the sine rule on triangle ABC:

\frac{4.5}{sin15^0} = \frac{6}{sin

cross-multiply

4.5 * sin

Thus, the angle <CAB measures 20.19°

8 0
1 month ago
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