3 years ago

Suppose I flip two identical coins. What is the probability that I get one head and one tail?

Mathematics

2 answers:

Alexeev081 [22]3 years ago

7 0

50/50 chance to be wrong or right

Yuliya22 [10]3 years ago

3 0

Answer:0.5

Step-by-step explanation:

possibilities for two coins are {(h,t),(t,h),(h,h),(t,t)}

=2/4=0.5

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Step-by-step explanation:

convert 2ft and 1 yards inches

2ft is 24 because 1 foot is 12 inches

1 yard is 36 inches because 1 yard is 3 feet

3×12=36

soo... 36+24+11=71

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What is the.least common multiple of 2 and 6

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lab scale known to have a standard deviation of 0.001gram, speimen weghtted 8 times. average weiht is 4.1602 gram. what is 99% c

gtnhenbr [62]

Answer:

$99\% CI=4.1602 \pm 0.0009$

Step-by-step explanation:

From the question we are told that:

Sample size $n=8$

Mean $\=x=4.1602$

Standard deviation $\sigma=0.001gram$

Generally 99\% confidence from table is mathematically given by

$99\% CI=4.1602 \pm *2.576*\frac{0.001}{\sqrt{{8}}}$

$P(-z$

$Z_{\alpha/2}=2.576$

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$99\% CI=\=x \pm Z_{\alpha/2*\frac{\sigma}{\sqrt{{n}}}$

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2 years ago

Factor the expression x2 - 49.<br> A. 7(x² – 7)<br> B. 7.(2-7)<br> C. 2+7(2-7)<br> D. (x + 7)(x-7)

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X^2 - 49 = (x + 7)(x - 7) = x^2 - 7x + 7x = 49 = x^2 - 49

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An algebra test contains 38 problems. Some of the problems are worth 2 points each. The rest of the questions are worth 3 points

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Substituting the value of 'x', we get

$2(38-y)+3y=100$

$76-2y+3y=100$

$76+y = 100$

y = 24

x+y = 38

x = 38-24 = 14

So, 14 problems are worth 2 points and 24 problems are worth 3 points.

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2 years ago

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