The data show the maximum wind speeds in miles per hour recorded for 40 states. construct a frequency distribution using 7 classes.

Step-by-step explanation:

We have to construct a frequency distribution table using 7 classes.

1. Find the difference between the maximum wind speed and the minimum wind speed first.

93 - 48 = 45

2. Divide this difference by number of class.

= 6.42

3. Round up this number.

6.42 ≈ 7

4. Add this number to the lowest number in the given table.

48 + 7 = 55

5. By repeating this step we can get 7 classes.

48

48 + 7 = 55

55 + 7 = 62

62 + 7 = 69

69 + 7 = 76

76 + 7 = 83

83 + 7 = 90

These are the lower limits of the interval.

6. Now we will write down the upper limits of the intervals.

48 + ( 7 - 1) = 54

48 - 54

Similarly we can write all other intervals.

55 - 61

62 - 66

67 - 73

74 - 80

81 - 87

88 - 94

7. Now we can easily form the frequency table.

Wind speed     Number of states

48 - 54                       3

55 - 61                        4    

62 - 66                       5

67 - 73                       12

74 - 80                       12

81 - 87                         3

88 - 94                        1

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3