Answer:
Step-by-step explanation:
Tìm cc
Answer:
a. k > 7
b. a < -21
c. h > 9
d. f < 301
Step-by-step explanation:
a. 2k + 7 > 21
2k > 14
k > 7
b. a/3 + 12 < 5
a/3 < -7
a < -21
c. 6h − 5 > 49
6h > 54
h > 9
d. f/7 − 9 < 34
f/7 < 43
f < 301
Hope this helps!
Step 1
Use the ratio of the number to the percentage to get the required answer.

Where,

Step 2
Get the required answer

The number of students that got B or a better grade on the test = 19 students rounded to a whole number.
8 x 2 1/4 = 18
the stack is 18 in. thick.
Hope this helps!!
~Kiwi