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charle [14.2K]
4 years ago
14

The probability that Fiona wakes up before 8am when she does not set her alarm is 2/5 On two consecutive days that Fiona does no

t set her alarm what is the probability of waking up before 8am for at least one of the days
Mathematics
1 answer:
denpristay [2]4 years ago
8 0

Answer:

16/25 = 0.64 = 64%

Step-by-step explanation:

If we want the probability of Fiona waking up before 8am for at least one of the days, we can calculate the probability of she not waking up 8am in both days, and then we do 1 minus this probability.

The probability of she not waking up 8am in one day is (1 - 2/5) = 3/5

The probability of she not waking up 8am in both days is 3/5 * 3/5 = 9/25

So, the probability of Fiona waking up before 8am for at least one of the days is (1 - 9/25) = 16/25 = 0.64 = 64%

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a rectangle has a perimeter of 22 feet. the width is 5 feet less than the length. find the length and width of the rectangle​
alexira [117]

Answer:

the length is 8ft

the width is 3ft

Step-by-step explanation:

Step one:

given

perimter= 22ft

let the length be x

width = x-5

Step two

the expression for the perimeter of a rectangle is

P=2L+2W

substituting our data

22= 2(x)+2(x-5)

open brackets

22=2x+2x-10

collect terms and solve for x

22+10=4x

32=4x

divide both sides by 4

x= 32/4

x= 8ft

the length is 8ft

the width = x-5= 8-5= 3ft

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SpyIntel [72]

Answer:

see explanation

Step-by-step explanation:

The x- intercept is the value of x where the line crosses the x- axis.

The x- intercept is (0.3, 0)

The y- intercept is the value of y where the line crosses the y- axis

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Find a value of M that will give you a system of equations with exactly one solution.
o-na [289]

Given:

System of equations is

y=6x+1

y=mx+1

To find:

A value of M that will give you a system of equations with exactly one solution.

Solution:

A system of equation has exactly one solution if the graph of the equation is neither parallel nor coincident.

Slope of parallel lines are same. But in the given equations if slopes are same then both the system of equations have two same equations which represent coincident lines.

For one solution, m\neq 6.

So, the value of m can be any real number except 6 because for m=6.

Thus, m=R-{6}.

1 is a real number which is not equal to 6.

Therefore, one possible value of m is 1.

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chubhunter [2.5K]

Answer:

y=(4d-8)/(3-c)

Step-by-step explanation:

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