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2 years ago

If x=12 what is that value of 5(x-4)

Mathematics

1 answer:

Kamila [148]2 years ago

3 0

Answer: 40

Step-by-step explanation:

You need to plug in 12 for x

5(12 - 4) = 5 x 8 = 40

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jenny has 50 square tiles she arranges the tiles in to a rectangular array of 4 rows. how many tiles are left over

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2 years ago

A yard of lace costs w cents a yard and fabric costs $.40 more than the lace. Kimberly wants to buy one yard of lace and 2 yards

Cloud [144]

Answer:

Step-by-step explanation:

A yard of lace costs w cents a yard and fabric costs $.40 more than the lace. This means that the cost of a yard of fabric would be

w + 0.5

Kimberly wants to buy one yard of lace and 2 yards of fabric. This means that the total amount of money that she would have to pay for the lace is is

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3 years ago

a candy machine holds 500 pieces of candy, 20%, percent of which are blue. customers get an srs of 4 pieces of candy per purchas

Greeley [361]

Answer:

p(b = 1) = 0.4096 = 40.96%

Step-by-step explanation:

For each candy, there are only two possible outcomes. Either it is blue, or it is not. The probability of a candy being blue is independent of any other candy. 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.

20% are blue

This means that $p = 0.2$

Sample of 4

This means that $n = 4$ .

Which of the following would find p(b=1)?

P(X = 1). So

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

$P(X = 1) = C_{4,1}.(0.2)^{1}.(0.8)^{3} = 0.4096$

So, p(b = 1) = 0.4096 = 40.96%

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2 years ago