Answer:
20
Step-by-step explanation:
8 = 40%
4 = 20 %
8 + 8 + 4 = 20
20 students = 100%
Answer:
0.80A + 0.92B = 63 .....1
A + B = 75 ......2
Step-by-step explanation:
Let A and B represent the total possible score in part A and B respectively;
Analysing each sentence of the question;
Sam scored 80% on Part A of a math test and 92% on part B of the math test. His total mark on the test was 63
80% of A + 92% of B = 63
0.80A + 0.92B = 63 ......1
The total possible marks for the test was 75;
A + B = 75 .....2
So, equation 1 and 2 provides a set of simultaneous equations that can be used to represent and solve the situation.
Solving the simultaneous equations, we will arrive at;
Part A = 50
Part B = 25
Answer:
the answer is 3
Step-by-step explanation:
Answer:
14y-13y² is the answer. sorry for dirty handwriting
Answer:
C
Step-by-step explanation:
Volume in math means s the amount of space in a 3D object.
the formula is l × W × H
So you do 25 × 11.25 × 6
it equals to 1687.5.
Therefore, the volume of the brick is 1687.5