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aleksandr82 [10.1K]
3 years ago
8

HELP

Mathematics
1 answer:
Sveta_85 [38]3 years ago
4 0
Area of a circle = pi *r*2
Area of complete circle with radius of 2 is about 12.56
Divided by 2 is 6.28
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The cost of a new laptop is $750 which generates a sales tax amount of 37.50. What is the sales tax rate.
viva [34]

Answer:

5 percent.

Step-by-step explanation:

Divide tax by the cost to see the percentage of the tax.

750/37.50=0.05

5 percent.

4 0
3 years ago
A survey asked only girls to identify their favorite item on the
MA_775_DIABLO [31]

Answer:

B

Step-by-step explanation:

A biased sample is a sample that does not accurately represent the population.

The survey asked only girls, but we can assume this school has both boys and girls. Therefore, by only asking girls, it creates a bias, because the boys in the school are not represented.

Therefore, the correct choice is B: biased sample.

6 0
3 years ago
Keenan set his watch 3 seconds behind, and it falls behind another
disa [49]

Answer:

in *42* days it will be 45 seconds behind

Step-by-step explanation:

it is already 3 behind and if its only 1 second everyday then you add 1 day until you get to 45 which 42+3 is 45 so the correct answer is 42 days.

6 0
3 years ago
How many terms are in the arithmetic sequence 1313, 1616, 1919, ……, 7070, 7373?
Nataliya [291]
To find the number of terms in the arithmetic sequence, we need to use the formula 
a_{n}= a_{1}+(n-1)d    
where a_{n} is the nth number, a_{1} is the first number, n is the number of terms and d is the difference of the two consecutive numbers.
7373 = 1313 + (n - 1)(303)
7373 = 1313 + 303n - 303
7373 = 1010 + 303n
7373 - 1010 = 303n
6363 = 303n
6363 ÷ 303 = n
n = 21

Therefore, there are 21 terms in the arithmetic sequence given.
7 0
3 years ago
Which scatter plot has a negative association?
aliya0001 [1]

c is the answer cuz a is a straight line of dots b is a no solution plot and d is a poitive plot

8 0
4 years ago
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