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lawyer [7]
3 years ago
10

On a math test, 4 out of 20 students received an A. Two students are randomly selected without replacement, and the first studen

t has an A. What is the probability of the second student having an A?
Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
8 0
A step by step equation, should be 20% chance
padilas [110]3 years ago
4 0

Answer:

Step-by-step explanation:

The answer should be 20% chance

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Marley runs 5 yards down the track from point A to point B, and then stops and runs
julia-pushkina [17]

Answer:

\sqrt{61}=AC or 7.8102=AC

Step-by-step explanation:

If we connect a line from point A to point C we create a triangle, and we can use pythagorean theorem to find this distance. So the line from point A to point C will be our hypotenuse and the other two distances will be out side lengths.

5^{2}+6^{2}=AC^{2}

25+36=AC^{2}

61=AC^{2}

\sqrt{61}=AC or 7.8102=AC

3 0
3 years ago
Kelly watches 3/5 of a movie in 5/8 of an hour. How much time wil it take her to watch the entire movie?
iVinArrow [24]

well, putting the movie in fifths, she watched 3/5, the whole movie will be 5/5 = 1.

\begin{array}{ccll} \stackrel{movie}{fraction}&hour\\ \cline{1-2} \frac{3}{5}&\frac{5}{8}\\[1em] \underset{whole}{1}&x \end{array}\implies \cfrac{~~ \frac{3}{5}~~}{1}=\cfrac{~~ \frac{5}{8}~~}{x}\implies \cfrac{3}{5}x=\cfrac{5}{8}\implies \cfrac{3x}{5}=\cfrac{5}{8} \\\\\\ 24x=25\implies x = \cfrac{25}{24}\implies x = 1\frac{1}{24}\qquad \textit{1 hour, 2 minutes and 30 seconds}

4 0
2 years ago
Which of the following statements best describes the value of the expression 6x + 7 when x = 5?
Tanzania [10]

Answer:

? is there a option?

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Product of (8.6×10^2)(3×10^2)in scientific notation
Snowcat [4.5K]

Answer:

in scientific notation = 2.58 × 10⁵

I hope I helped you^_^

8 0
2 years ago
Which expressions of signed decimal numbers have negative quotients? Check all that apply.
dybincka [34]
A negative number divided by positive is a negative quotient and vice versa.
So
5.7 / -2.2
-0.01 / 0.05
Are the ones with negative quotients
7 0
3 years ago
Read 2 more answers
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