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3 years ago

Can someone please help me ASAP

Mathematics

1 answer:

forsale [732]3 years ago

8 0

Answer:

its B

Step-by-step explanation:

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Presley bought 1 1/2 yards of fabric for $12.23. How much did Presley pay per foot of fabric?

MAXImum [283]

Answer:

Step-by-step explanation:

1 yd = 3 ft...so 1 1/2 yds = 4.5 ft

12.23 / 4.5 = 2.717 rounds to 2.72 per foot <==

4 0

2 years ago

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the difference between two numbers is 342. the bigger number is 4 times the smaller number. find the product of the two numbers.

SVETLANKA909090 [29]

Let the two numbers be x and y.

x = 4y

x - y = 342

3y = 342

y = 114

xy = 4y * y = 456 * 114 = 51984

6 0

3 years ago

2,000 into scientific notation

vladimir1956 [14]

Answer:

0.002

Step-by-step explanation:

3 0

3 years ago

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Please help me- AND PLEASE EXPLAIN

GuDViN [60]

Answer:

A=35, B=55, and C=25

Step-by-step explanation:

Angle A and the angle next to it are linear pairs, so you can subtract 145 from 180.

if you already know Angle A, and that the other angle is 90 degress, you can add 90+35 and subtract it from 180 to get Angle B

Angle C is paired with the angle across from it (I forgot what the term is called) so it is 25 degrees.

7 0

2 years ago

If a procedure meets all of the conditions of a binomial distribution except the number of trials is not fixed, then the geomet

morpeh [17]

Answer:

The probability is 0.0428

Step-by-step explanation:

First, let's remember that the binomial distribution is given by the formula:

$P(X=k) =\left[\begin{array}{ccc}n\\k\end{array}\right] p^{k}(1-p)^{n-k}$ where k is the number of successes in n trials and p is the probability of success.

However, the problem tells us that when there isn't a number of trials fixed, we can use the geometric distribution and the formula for getting the first success on the xth trial becomes:

$P(X=x) = p(1-p)^{x-1}\\$

The problem asks us to find the probability of the first success on the 4th trial (given that the first subject to be a universal blood donor will be the fourth person selected)

Using this formula with the parameters given, we have:

p = 0.05

x = 4

Substituting these parameters in the formula and solving it, we get:

$P(X=4) = 0.05(1-0.05)^{4-1}\\P(X=4) = 0.05 (0.95)^{3}\\P(X=4) = 0.05(.8573)\\P(X=4) = 0.0428$

Therefore, the probability that the first subject to be a universal blood donor is the fourth person selected is 0.0428 or 4.28%

7 0

2 years ago