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2 years ago

Plz answer. What is the sum? 3x^2-2x-1/x-5 + -2x^2+x-5/x-5

Mathematics

2 answers:

Ann [662]2 years ago

5 0

Answer:

It is D, trust me because Doge said so.

Step-by-step explanation:

IrinaVladis [17]2 years ago

3 0

Answer:

Step-by-step explanation:

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Which is bigger 17.5 or 1/6

Nataly [62]

17.5 is bigger.1\6 is small.

5 0

3 years ago

Read 2 more answers

4.8 x 10 to the 8th power divided by 1.2 x 10 to the 4th power times 2.2 x 10 to the negative 8th power

Masteriza [31]

(4.8*10^8)/(1.2*10^4)2.2*10^-8=11/<span>12500</span>
I hope this helps

6 0

3 years ago

A coin, having probability p of landing heads, is continually flipped until at least one head and one tail have been flipped. (a

Natali [406]

Answer:

(a)

The probability that you stop at the fifth flip would be

$p^4 (1-p) + (1-p)^4 p$

(b)

The expected numbers of flips needed would be

$\sum\limits_{n=1}^{\infty} n p(1-p)^{n-1} = 1/p$

Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

Step-by-step explanation:

(a)

Case 1

Imagine that you throw your coin and you get only heads, then you would stop when you get the first tail. So the probability that you stop at the fifth flip would be

$p^4 (1-p)$

Case 2

Imagine that you throw your coin and you get only tails, then you would stop when you get the first head. So the probability that you stop at the fifth flip would be

$(1-p)^4p$

Therefore the probability that you stop at the fifth flip would be

$p^4 (1-p) + (1-p)^4 p$

(b)

The expected numbers of flips needed would be

$\sum\limits_{n=1}^{\infty} n p(1-p)^{n-1} = 1/p$

Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

7 0

2 years ago

How many, Inch cubes fit into a rectangular prism that measures 4 Inches long, 5 Inches wide, and

kramer

780 (or c)

I think this is correct because 4 x 5 = 20 x 5 = 100 and 100 x 5 = 500

500 + 280 = ????

780

8 0

2 years ago

identify an equation in the point-slope form for the line parallel to y=1/2 x -7 that passes through (-3,-2)

Mariulka [41]

Answer:

Step-by-step explanation:

hello :

note :

Use the point-slope formula.

y - y_1 = m(x - x_1) when : x_1= -3 y_1= -2 m= 1/2(parallel means same slope)

an equation in the point-slope form is : y +2 = 1/2(x+3)

3 0

3 years ago