given the frequency table, what percentage of the students that like country are also in grades 9–10? round to the nearest whole percent.

band preference for school dance
rap rock country row totals
grades 9–10 40 30 55 125
grades 11–12 60 25 35 120
column totals 100 55 90 245
22%
44%
55%
61%

The percentage of the students that like country and also in grades 9-10 is 61%

Step-by-step explanation:

                          Rap    Rock   Country   Total

Grades 9-10       40        30          55          125

Grades 11-12     60        25          35          120

Total                  100       55          90          245

Percentage= (Number of students in both country and grades/ Total students in country)*100

Total students in country= 90

Number of students in both country and grades 9-10= 55

Percentage= (55/90)*100

                   = 61.11%= 61%(rounded to the nearest whole %)

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.