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3 years ago

A number r decreased by the quotient of a number r and two

Mathematics

1 answer:

worty [1.4K]3 years ago

4 0

R - (12÷r)+2
I think that thats the answer

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Suppose that in a certain county 37% of voters are registered as Democrats, 29% as Republicans, 7% as Green party, and the rest

Fantom [35]

Answer:

$0.66$

Step-by-step explanation:

GIVEN: Suppose that in a certain county $37\%$ of voters are registered as Democrats, $29\%$ as Republicans, $7\%$ as Green party, and the rest are considered Independents. You conduct a poll by calling registered voters in the county at random.

TO FIND: Probability that the first call will be to either a Democrat or a Republican.

SOLUTION:

Lets total population of county be $100x$ .

voters registered as Democrats $=37\%=\frac{37}{100}\times100x$

$=37x$

voters registered as Republicans $=29\%=\frac{29}{100}\times100x$

$=29x$

voters registered as Green party $=7\%=\frac{7}{100}\times100x$

$=7x$

Probability that first call will be to Democrats $P(A)=\frac{\text{total democrats}}{\text{total voters}}$

$=\frac{37x}{100x}=0.37$

Probability that first call will be to Republican $P(B)=\frac{\text{total republicans}}{\text{total voters}}$

$=\frac{29x}{100x}=0.29$

probability that the first call will be to either a Democrat or a Republican

$=P(A)+P(B)$

$=0.37+0.29$

$=0.66$

Hence the probability that the first call will be to either a Democrat or a Republican is $0.66$

6 0

3 years ago

Find the diameter of a circle with a radius of 13 ft.

Blizzard [7]

Answer:

Step-by-step explanation:

A radius is half of a diameter so multiply by 2

3 0

3 years ago

Determine if the sequence below is arithmetic or

anzhelika [568]

9514 1404 393

Answer:

arithmetic; common difference of 5

Step-by-step explanation:

It usually works well to check differences first. Here, they are ...

8 -3 = 5

13 -8 = 5

These are the same value, so the sequence is arithmetic with a common difference of 5.

7 0

3 years ago

Writebthe name of the period that has the digit 913

den301095 [7]

Nine hundred thirteen thousand

7 0

3 years ago

While hiking, Grace went up 647 meters above sea level. At the same time, her friend was scuba diving 293

Nina [5.8K]

Answer:

940 m

Step-by-step explanation:

Above sea level is measured as positive and below sea level is measured as negative.

In order to find the distance between both we need to find the difference between their elevation and depression.

Distance between Grace and her friend

= 647 - (-293)

= 647 + 293

= 940 m

6 0

4 years ago

Read 2 more answers