Answer: 8 cm
Step-by-step explanation: 3^2 = 9 So, 72/9 = 8
Sum of all grades / number of students = average grade
Average grade = 80
number of students = 1514 (excluding payton)
80 * 1514 = 121120
Average grade = 81
number of students = 1515
81 * 1515 = 122715
Sum of 1515 students = 122715
Sum of 1514 students = <u>121120</u>
Difference: 1595 *Paytons grade
Answer:
The answer is option 3.
Step-by-step explanation:
You have to substitute H+=2×10^(-9) into the equation of pH :
pH = -log[H+]
H+ = 2×10^(-9)
pH = -log[2×10^-9]
= 8.70 (3s.f)
Answer:
The answer is 35
Step-by-step explanation:
