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Archy [21]
2 years ago
9

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?
Mathematics
2 answers:
Hunter-Best [27]2 years ago
5 0

Answer:

$21

Step-by-step explanation:

40% of 15 is 6, and 15 + 6 is 21

Alexxandr [17]2 years ago
3 0

Answer:

37.5

Step-by-step explanation:

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The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the proba
Olegator [25]

Answer:

The probability that occurrence of 8 in ten minutes is 0.0771.

Step-by-step explanation:

Poisson Distribution:

A discrete random variable X having the enumerable set {0,1,2,.....} as the spectrum, is said to have Poisson distribution with parameter \mu (>0), if the p.m.f is given by

P(X=x)=\frac{e^{-mu}\mu^x}{x!}  for x=0,1,2,...

               = 0,           elsewhere

The mean number of occurrences in ten minutes is 5.3.

Here \mu = 5.3 and x= 8

P(X=8)=\frac{e^{-5.3}(5.3)^8}{8!}

               =0.0771

The probability that occurrence of 8 in ten minutes is 0.0771.

3 0
2 years ago
X^2+5x=3x+11 solve by completing the square
goldenfox [79]
X^2+2x-11=0, this would be the answer that you are looking for m8.
7 0
3 years ago
Dina invests $600 for 5 years at a rate of 2% per year compound interest.
kenny6666 [7]

Answer:

The investment after 5 years is $ 662.45.

Step-by-step explanation:

Principal, P = $ 600

Time, t = 5 years

Rate of interest, R = 2 %

Time , t = 5 years

The amount after the time 5 years is

A = P \times \left ( 1+\frac{R}{100} \right )^t\\\\A = 600\left ( 1+0.02 \right )^5\\\\A = 662.45

So, the investment after 5 years is $ 662.45.

4 0
2 years ago
What are the types of polynomial??​
Nana76 [90]

Answer

Monomial, Binomial, and Trinomial

Explanation

Polynomials are algebraic expressions that may comprise of exponents which are added, subtracted or multiplied. Polynomials are of different types. Namely, Monomial, Binomial, and Trinomial. A monomial is a polynomial with one term. A binomial is a polynomial with two, unlike terms. A trinomial is an algebraic expression with three, unlike terms. In the following section, we will study about polynomials and types of polynomials in detail.

5 0
2 years ago
Evaluate x + sq root(yz) when x = 3, y = 2, and z = –8.
Alex_Xolod [135]
Just remember  \sqrt{-1} = i

Sub in the numbers:
3 + \sqrt{-16} = 3+  \sqrt{16}\sqrt{-1} = 3 + 4i
7 0
3 years ago
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