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3 years ago

please do my question u get more points if the answer is right. if inappropriate you get reported NO LINKS and please EXPLAIN

Mathematics

1 answer:

Lunna [17]3 years ago

5 0

Answer:

600

Step-by-step explanation:

Well, first you need to make a proportion which will be $\frac{x}{6,000} = \frac{10}{100}$

x is what we need to find

6,000 is the total people who voted

10% is the percent of 18 to 29 years old

and 100% represents the circle graph because all circle graphs equal 100%

First, we use the cross multiply method, for instance, 6,000×10=60,000

Next, divide 60,000÷100 which is 600.

Therefore there are 600, 18 to 29 year olds who voted in the election.

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Answer:

The mean and standard deviation of the corrected pH measurements are 6.63 and 3.8025 respectively.

Step-by-step explanation:

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$E(Y)=E(1.3(X+0.2))=1.3E(X+0.2)=1.3E(X)+1.3*0.2\\\\E(Y)=1.3E(X)+0.26\\\\E(Y)=1.3*4.9+0.26=6.37+0.26=6.63$

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$V(Y)=V(1.3(X+0.2))\\\\V(Y)=1.3^2\cdot V(X+0.2)\\\\V(Y)=1.69\cdot V(X)\\\\V(Y)=1.69\cdot 1.5^2=1.69\cdot 2.25=3.8025$

The properties that have been applied are:

$1.\,E(aX)=aE(X)\\\\ 2.\,E(X+b)=E(X)+b\\\\3.\,V(aX)=a^2V(X)\\\\4.\,V(X+b)=V(X)+0$

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3 years ago

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Dmitriy789 [7]

Answer:

25 . 71 mph

Step-by-step explanation:

45 miles in 1.75 hr

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3 years ago

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Answer:

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ch4aika [34]

Answer:

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3 years ago

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3 years ago