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3 years ago

Please help meee ;(((

Mathematics

1 answer:

RoseWind [281]3 years ago

3 0

Answer:

C. No Solution

Step-by-step explanation:

x=3-y

x+y=-2

3-y+y=-2

Y=No solution

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6. Suppose that a fair coin is tossed 2 times, and the result of each toss (H or T) is recorded.

nekit [7.7K]

Answer:

a) $S= {HH, HT, TH, TT}$

b) $P(X=0) = (2C0) (0.5)^0 (1-0.5)^{2-0}= 0.25$

$P(X=1) = (2C1) (0.5)^1 (1-0.5)^{2-1}= 0.5$

$P(X=2) = (2C2) (0.5)^2 (1-0.5)^{2-2}= 0.25$

And we have the following table:

X | 0 | 1 | 2

P(X) | 0.25 | 0.5 | 0.25

Step-by-step explanation:

Let's define first some notation

H= represent a head for the coin tossed

T= represent tails for the coin tossed

We are going to toss a coin 2 times so then the size of the sample size is $2^2 = 4$

a. What is the sample space for this chance experiment?

The sampling space on this case is given by:

$S= {HH, HT, TH, TT}$

b. For this chance experiment, give the probability distribution for the random variable of the total number of heads observed.

The possible values for the number of heads are X=0,1,2. If we assume a fair coin then the probability of obtain heads is the same probability of obtain tails and we can find the distribution like this:

$P(X=0) = (2C0) (0.5)^0 (1-0.5)^{2-0}= 0.25$

$P(X=1) = (2C1) (0.5)^1 (1-0.5)^{2-1}= 0.5$

$P(X=2) = (2C2) (0.5)^2 (1-0.5)^{2-2}= 0.25$

And we have the following table:

X | 0 | 1 | 2

P(X) | 0.25 | 0.5 | 0.25

5 0

2 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B-63%5C%5C" id="TexFormula1" title="\sqrt{-63\\" alt="\sqrt{-63\\" align="absmiddle"

alex41 [277]

Here you go! Hope this helps

4 0

2 years ago

Pietro has $75. He used 3/5 of his money to buy a new pair of running shoes. How much did Pietro spend on his new shoes

cupoosta [38]

Step-by-step explanation:

HI Sofia!

So this is how you find the answer.

Amount of money pietro has=$75

Amount of money he spent on shoes=3/5 of 75

=3/5*75= 45

Thus, Pietro spent $45 on shoes.

7 0

2 years ago

Read 2 more answers

The length of a rectangle is 4 cm less then twice it’s width the perimeter of the rectangle is 34 cm. What are the dimensions of

IRISSAK [1]

The lengths are 10 and the widthes are 7

8 0

3 years ago

Araceli's curtain company is making curtains for a local hotel. She wants each curtain to be 48 inches long. At the fabric store

lina2011 [118]

Answer:

168 ft

Step-by-step explanation:

1. Calculate the total length of the curtains

42 curtains × (48 in/1 curtain) = 2016 in

2. Convert to inches to feet

1 in = ¹/₁₂ ft 2016 in × (¹/₁₂ ft/1 in) = (2016/12) ft = 168 ft

Ariceli will need 168 ft of fabric.

6 0

2 years ago