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2 years ago

Thanks for not helping me...

Mathematics

1 answer:

kogti [31]2 years ago

6 0

Answer:

Whats up

Step-by-step explanation:

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fifteen out of the 60 eighth-graders at sebring junior high are on the track team. what percent of the eight-graders are on the

allsm [11]

Answer:

25%

Step-by-step explanation:

You have 60 total, 30 on the track team would be 50%, but there is only 15 on the track them, you cut the 50% in half again which gives 25%.

8 0

3 years ago

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 $Sd(X) = \sqrt{Var(X)} = \sqrt{np(1-p)} = 1.09$

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2 years ago

What is the approximate mass in kg of 151 L of water?

brilliants [131]

Answer:

The answer will be 64.5

Step-by-step explanation:

6 0

2 years ago

What is 1.939 x 10^5 in standard form?<br>

VARVARA [1.3K]

Answer:

193900

Step-by-step explanation:

thx for points

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2 years ago

The equation of a line in the point-slope form is show below.

Gwar [14]

Answer:

Answer:

your answer is

m= -3

Math-way is a really good site for these kinds of problems i would recommend it if you need anymore help with stuff like this. :)

Step-by-step explanation:

3 0

2 years ago