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Sedaia [141]
3 years ago
10

The total of 8 and the product of x and 2

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
5 0

Answer:

8+2x

Step-by-step explanation:

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A laptop has a listed price of $899.95 before tax. If the sales tax rate is 6.5%, find the total cost of the laptop with sales t
Ket [755]

Answer:

the total cost of the laptop with tax is 958.45

Step-by-step explanation:

5 0
3 years ago
In Happyville, the ideal family has four children, at least two of which are girls. If you randomly select a Happyville family t
sleet_krkn [62]

Answer:

0.3125 = 31.25% probability that it is not ideal.

Step-by-step explanation:

For each children, there are only two possible outcomes. Either it is a girl, or they are not. The probability of a child being a girl is independent of any other child. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

0.5 probability of a children being a girl:

This means that p = 0.5

If you randomly select a Happyville family that has four children, what is the probability that it is not ideal?

Not ideal is less than two girls, so this is P(X < 2).

Four children means that n = 4. So

P(X < 2) = P(X = 0) + P(X = 1)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{4,0}.(0.5)^{0}.(0.5)^{4} = 0.0625

P(X = 1) = C_{4,1}.(0.5)^{1}.(0.5)^{3} = 0.25

P(X < 2) = P(X = 0) + P(X = 1) = 0.0625 + 0.25 = 0.3125

0.3125 = 31.25% probability that it is not ideal.

7 0
2 years ago
The perimeter of a rectangle is 36 menters. The length of the rectangle is 4 meters longer than the width. Find the length and t
cupoosta [38]

Answer:

11 m and 7 m

Step-by-step explanation:

Width = x

Length = x+4

P=2L+2W

P=2(x+4) + 2x=4x +8

36 = 4x + 8

4x = 28

x=7  Width

x+4=7+4=11  Length

7 0
3 years ago
a pizza was cut into fifths. each of these fifths is cut into thirds. what fraction of the pizza is each of the final pieces
AnnZ [28]

Answer: 1/15


Pizza cut into fifth, therefore 1 piece = 1/5

1 piece cut into thirds = 1/3 x 1/5 = 1/15

3 0
3 years ago
Helpp asapp please due soonn
ivanzaharov [21]

Answer:

A.

Step-by-step explanation:

1.5m + 6.5q > 100

✨♥️

7 0
2 years ago
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