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Orlov [11]
2 years ago
7

A store owner paid $15 for a book. She marked up the price of the book by 40% to determine its selling price. What is the sellin

g price, in dollars, of the book?
\
Mathematics
1 answer:
densk [106]2 years ago
7 0

Answer:

the selling price is 21 dollars

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Sam's age is 125% of mary's age. mary's age is p% of sam's age. what is the value of p?
ddd [48]
Let Sam be (S+8) years while his sister is S years.

S(S+8) = 105

S^2+8S-105 = 0

(S+15)(S-7) = 0

Sam’s sister is 7 years and Sam is 15 years old.
7 0
2 years ago
(1 point)
marusya05 [52]

Answer:

The correct answer is: {2,4,6,8}

Step-by-step explanation:

Given sets are:

P = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9) and V= {2, 4, 6, 8, 10, 12, 14, 16, 18, 20)

We have to find

P∩V

The symbol is used for intersection of two sets. In intersection, only common elements of both sets are written in result.

So,

P∩V = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9) ∩ {2, 4, 6, 8, 10, 12, 14, 16, 18, 20)

P∩V = {2,4,6,8}

Hence,

The correct answer is: {2,4,6,8}

7 0
3 years ago
Mrs. avery is going to randomly select one student from her class to read a poem out loud. there are 151515 boys and 131313 girl
arlik [135]
P(boy) is asking for the probability that a boy will be chosen to read a poem out loud. Since there are 15 boys, we can get the probability by dividing this with the total number of students. This is because out of all the students, there is an equal possibility that each of the 15 boys will be chosen.

\frac{15}{15+13}= \frac{15}{28}=0.5357

ANSWER: The probability that a boy is selected is 0.5357 or 53.57%
8 0
3 years ago
Read 2 more answers
Nina is bouncing on the trampoline her fourth bounce is 6 feet high each bounce afterwards it's 2/3 as high as the bounce before
Helen [10]
Okay. So Nina's fourth bounce is 6 feet high. The following bounces will be 2/3 as high as the previous. That is also similar to exponential decay. 6 is 2 away from 4. For this, we will raise 2/3 to the 2nd power. We can basically just multiply it together. 2/3 * 2/3 is 4/9. Now, we multiply that fraction by 6. 6 is 6/1 as a fraction. 6/1 * 4/9 is 24/9 or 2 2/3 in simplest form. There. Nina's sixth bounce will be 2 2/3 feet high.
3 0
3 years ago
In Example 3, the airplane leaves from Fort Lauderdale. The interior angle measure at Bermuda is 63.9°. The interior angle measu
Tju [1.3M]

Based on the interior angle measure at Bermuda, the interior angle measure at San Juan, the value of y can be found to be 61.8°

<h3>What is the value of y?</h3>

The interior angle measures at Bermuda, San Juan, and Fort Lauderdale take the shape of a triangle so they will add up to the total interior triangle measure of 180°.

y is also the angle at For Lauderdale so the value of y is:

y + (y - 7.5) + 63.9 = 180°

Solving gives:

y + y - 7.5 + 63.9 = 180

2y = 180 - 63.9 + 7.5

2y = 123.6

y = 123.6/2

= 61.8°

Find out more on interior angles at brainly.com/question/24966296

#SPJ1

4 0
1 year ago
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