2 years ago

Obtuse angles measure greater than 90 degrees

Mathematics

1 answer:

Harman [31]2 years ago

4 0

yes obtuse angles measure over 90 degrees and less 180 degrees

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When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 5%. Let

kupik [55]

Answer:

(a) 0.873 (b) 0.007 (c) 0.715 (d) 0.277 (e) 1.25 and 1.09

Step-by-step explanation:

The probability that the random variable X takes the value x is given by P(X=x) = $25Cx 0.05^x0.95^{25-x}$ . Then,

(a) $P(X\leq) = (25C0)(0.05^0)(0.95^{25}) + (25C1)(0.05^1)(0.95^{24}) + (25C2)(0.05^2)(0.95^{23})= 0.873$

(b) $P(X\geq5) = 1-P(X\leq4) = 1 - (0.873 + (25C3)(0.05^3)(0.95^{22}) + (25C4)(0.05^4)(0.95^{21})) = 1 - (0.873 + 0.12) = 0.007$

(c) $P(1\leqX\leq4) = (25C1)(0.05^1)(0.95^{24}) + (25C2)(0.05^2)(0.95^{23}) + (25C3)(0.05^3)(0.95^{22}) + (25C4)(0.05^4)(0.95^{21}) = 0.715$

(d) $P(X=0) = (25C0)(0.05^0)(0.95^{25}) = 0.277$

(e) E(X) = np = (25)(0.05) = 1.25 and $Sd(X) = \sqrt{Var(X)} = \sqrt{np(1-p)} = 1.09$

8 0

2 years ago

Someone please help please I don’t understand this can u please be specific when answering it please help me I’m giving 20points

Len [333]

Okay so first we need to find 40% of 7.50. To do this you simply divide the percentage by 100, so you have .4 now. You multiply 7.50 by .4 and get 3. Lastly, you just subtract 3 from 7.50 and you get $4.50

Emma will pay $4.50 after the discount.

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2 years ago

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Jake buys a drink and sandwich for $7.95. The drink costs $2.25. Write an equation to find the cost of the sandwich x

Nesterboy [21]

Answer:

$7.95-$2.25=x

Step-by-step explanation:

pls brainliest

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2 years ago

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For his long-distance phone service, Jim pays a $3 monthly fee plus 11 cents per minute. Last month, Jim's long-distance bill wa

Ymorist [56]

Answer:

168

Step-by-step explanation:

3 + .11x = 21.48

.11x = 18.48

x = 168

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2 years ago

What is the property of 56+x=x+56?

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The cumcutative property of addition

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