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3 years ago

If the variance of the "number of daily parking tickets issued is 100, the standard deviation is defined as the

1 answer:

4 0

<span>Generally according to mathematical formulas the standard deviation is defined as the square root of the variance.Same formula applied to this question where variance is 100 which results that standard deviation is 10.Whereas variance is the square of the standard deviation which is 100 derived in the question.</span>

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618 runners registered for the marathon. Of these runners 0.8% completed the race in under 2 hr 15 min. a) how many runners comp

umka21 [38]

Answer:

Exact = 4.944 Rounded = about 5 Reality = 4 since there can’t be 99.4% of an human.

Step-by-step explanation:

0.8/100 = x/618

618(0.8) = 100x

494.4 = 100x

/100. /100

x = 4.944

7 0

3 years ago

The value of a + b + c for equation 2 Y - x = 7 is

morpeh [17]

Answer:

Correct option is

1.x+0.y=7

x=7 can be written as, 1.x+0.y=7 as the coefficient of x is 1 and that of y is 0. Step-by-step explanation:

6 0

2 years ago

Sarah's family of 4 went camping for 1 week. they each year 3 paper plates a day. how many paper plates did the family use up we

Mama L [17]

Answer:

Step-by-step explanation:

they use 3 plates a day

there are 4 of them

so in one day, they use 12 plates [3x4]

they camp for 7 days, so 12x7.

84!! :D

4 0

3 years ago

Coby needs to know the area and perimeter of his farm property. The length of his property is 1 6 mile and the width is 2 9 mile

Alexandra [31]

Answer:

P= 7/9 miles

A= (7/18) miles²

Step-by-step explanation:

Length 'l' = (1/6) mile

Width 'w'= (2/9) mile

Perimeter 'P' is given by:

'P' = 2l + 2w => 2(1/6) + 2(2/9)

P= 7/9 miles

Area 'A' is given by:

A= l x w =(1/6) x (2/9) = (7/18) miles²

3 0

3 years ago

Given that

Iteru [2.4K]

Answer:

y=3÷9

Step-by-step explanation:

2x-9y=11

or,2×7-9y=11

or,14-11=9y

or,3÷9=y

6 0

3 years ago