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3 years ago

I need help on this I’m in a test right now .

Mathematics

2 answers:

Zarrin [17]3 years ago

4 0

Answer:

Step-by-step explanation:

go to ur add at tab and put math calculator and the 2nd one typ in whatever but it has to be math related.

Andreyy893 years ago

3 0

Answer:

answer is D

Step-by-step explanation:

(75.5×51)÷24= 160.4

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The number of blueberry muffins that a baker makes each day is 40% of the total number of muffins she makes. On Monday, the bake

jek_recluse [69]

Turn the percentage into a decimal.
40% = 40÷100 = 0.4
Then multiply it with your no.
36x0.4 = 14.4

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4 years ago

A sequence is defined by un=3n-2. find u27

Fed [463]

I think the definition of your sequence is    u(n) = 3n - 2 .
That little set of parentheses makes it SO much
easier to read and understand.

To find u(any number) just write the number in place of 'n' .

u(27) = 3(27) - 2

   =   81 - 2

   = 79 .

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3 years ago

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

arsen [322]

Answer:

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

Step-by-step explanation:

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

4 0

3 years ago

Read 2 more answers

CAN SOMEONE HELP:) PLSSS

rewona [7]

Answer:

I honestly don’t know I am gonna guess

Step-by-step explanation:

1/12?

. 。 • 　ﾟ。　. .

　. . 　。。　. .

. 。 ඞ 。 . • 　• .

ﾟ Bread was Not An Impostor. 。　. .

' 1 Impostor remains 　。 .

ﾟ　. 　. , . .. . .

Have a nice day UwU

6 0

3 years ago

In the united states, voters who are neither democrat nor republican are called independent. it is believed that 12% of voters a

Nitella [24]

Answer:

a) 0.0245 = 2.45%

b) 0.9483 = 94.83%

c) 0.6931 = 69.31%

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are independent, or they are not. The probability of a person being independent is independent of any other person. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

It is believed that 12% of voters are independent.

This means that $p = 0.12$

Survey of 29 people

This means that $n = 29$

a. what is the probability that none of the people are independent? probability =

This is P(X = 0). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{29,0}.(0.12)^{0}.(0.88)^{29} = 0.0245$

0.0245 = 2.45% probability that none of the people are independent

b. what is the probability that fewer than 7 are independent? probability =

$P(X < 7) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6)$

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{29,0}.(0.12)^{0}.(0.88)^{29} = 0.0245$

$P(X = 1) = C_{29,1}.(0.12)^{1}.(0.88)^{28} = 0.0971$

$P(X = 2) = C_{29,2}.(0.12)^{2}.(0.88)^{27} = 0.1853$

$P(X = 3) = C_{29,3}.(0.12)^{3}.(0.88)^{26} = 0.2274$

$P(X = 4) = C_{29,4}.(0.12)^{4}.(0.88)^{25} = 0.2016$

$P(X = 5) = C_{29,5}.(0.12)^{5}.(0.88)^{24} = 0.1374$

$P(X = 6) = C_{29,6}.(0.12)^{6}.(0.88)^{23} = 0.0750$

$P(X < 7) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6) = 0.0245 + 0.0971 + 0.1853 + 0.2274 + 0.2016 + 0.1374 + 0.0750 = 0.9483$