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3 years ago

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You write each of the 26 letters of the alphabet on separate index cards.If you choose 2 cards at random without replacing them,

what is the probability that you will not draw an A? Round your answer to three decimal places.

1 answer:

son4ous [18]3 years ago

8 0

Answer:

25 to 1

Step-by-step explanation:

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I really really really need help!!!!

Yakvenalex [24]

For $f$ to be continuous at $x=1$ , you need to have the limit from either side as $x\to1$ to be the same.

$\displaystyle\lim_{x\to1^-}f(x)=\lim_{x\to1^-}(|x-1|+2)=2$
$\displaystyle\lim_{x\to1^+}f(x)=\lim_{x\to1^+}(ax^2+bx)=a+b$

If $a=2$ and $b=3$ , then the limit from the right would be $2+3=5\neq2$ , so the answer to part (1) is no, the function would not be continuous under those conditions.

This basically answers part (2). For the function to be continuous, you need to satisfy the relation $a+b=2$ .

Part (c) is done similarly to part (1). This time, you need to limits from either side as $x\to2$ to match. You have

$\displaystyle\lim_{x\to2^-}f(x)=\lim_{x\to2^-}(ax^2+bx)=4a+2b$
$\displaystyle\lim_{x\to2^+}f(x)=\lim_{x\to2^+}(5x-10)=0$

So, $a$ and $b$ have to satisfy the relation $4a+2b=0$ , or $2a+b=0$ .

Part (4) is done by solving the system of equations above for $a$ and $b$ . I'll leave that to you, as well as part (5) since that's just drawing your findings.

8 0

2 years ago

Will give brainliest answer to whoever gets this correct.

yanalaym [24]

draw an imaginary line down from the 1 dimension so you have a rectangle that is 1 by 24

area = L x w = 24 * 1 = 24 square units

now you have a triangle that is 7 at the bottom and 24 tall

area of triangle = 1/2 x base x height

so you have 1/2 * 7 * 24 which =84 square units

total area = 84 + 24 = 108 units^2

please mark brainliest

5 0

3 years ago

Find the area of the circle. Round your answer to the nearest hundredth.

soldi70 [24.7K]

Answer:

50.27

Step-by-step explanation:

area of a circle: pi X r^2

r= radius

6 0

3 years ago

Read 2 more answers

Solve 7x - 4 = 5x + 15 for x.

Law Incorporation [45]

7x-4=5x+15
-5x on both sides
2x-4=15
add four to both sides
2x=19
divide both sides by 2 to isolate x
x=9.5

8 0

3 years ago

The difference between two rational numbers and get a negative number

expeople1 [14]

2-3 is -1. difference between two rational numbers that make a negative

4 0

3 years ago