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2 years ago

William, Xing Mei, Yuki, and Zack run a race. In how many different ways can they finish?

Mathematics

1 answer:

BigorU [14]2 years ago

5 0

Answer:

Step-by-step explanation:

Four total places someone can come - 1st, 2nd, 3rd or 4th. Anyone can come 1st - 4 people

Now only the remaining 3 can come second - 3 people

Next, only the remaining 2 people can come third - 2 people

Finally, one person comes last - 1 person

4 x 3 x 2 x 1 = 24

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AlekseyPX

Answer:

Step-by-step explanation:

3 0

2 years ago

Find the equation lines (4, 5)(7, 3)

mash [69]

Step-by-step explanation:

Hey there!

The equation of a st.line passing through points (4,5) and (7,3) is;

$(y - y1) = \frac{y2 - y1}{x2 - x1} (x - x1)$

Put all values.

$(y - 5) = \frac{3 - 5}{7 - 4} (x - 4)$

Simplify it.

$(y - 5) = \frac{ - 2}{3} (x - 4)$

$3(y - 5) = - 2x + 8$

$3y - 15 = - 2x + 8$

$2x + 3y - 23 = 0$

Therefore therequired equation is 2x+3y-23=0.

Hope it helps..

8 0

3 years ago

Students who score within 14 points of the number 88 will pass a particular test. Write this statement using absolute value nota

solniwko [45]

Answer:

|88-x| ≤ 14

Step-by-step explanation:

their score has to be within 14 points of 88.

if their score is above 88, the number will be negative, but the absolute value makes the number positive. if that number is still within 14 of 88, they pass.

if their score is below 88, the number will be negative, and the absolute value keeps the number positive. if that number is still within 14 of 88, they pass.

8 0

2 years ago

Which is the best unit for measuring the weight of an elephant?

OLEGan [10]

The best unit of measuring when weighing an elephant would be

b. tons

8 0

2 years ago

Assume that 63% of people are left-handed. If we select 5 people at random, find the probability of each outcome described below

mash [69]

Answer:

a. 0.9931

b. 0.3423

c. 0.3907

d. 0.2670

e. 3.15

f. 1.0796

Step-by-step explanation:

The probability of the variable that said the number of left-handed people follow a Binomial distribution, so the probability is:

$P(x)=nCx*p^{x}*(1-p)^{n-x}$

nCx is calculated as:

$nCx=\frac{n!}{x!(n-x)!}$

Where x is the number of left-handed people, n is the number of people selected at random and p is the probability that a person is left--handed. So P(x) is:

$P(x)=5Cx*0.63^{x}*(1-0.63)^{5-x}$