Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
1.375
x 80
_________
0000
+11000
_________
110.000
80 marked up by 37.5% is 110.
72+12=84
84+2=86
So add 72 plus 12 and you get Eighty-Four . Plus 2 equals 86
Answer:
x + 4 = 5x - 6
x = 2.5
Step-by-step explanation:
x + 4 = 5x - 6
4 = 4x -6
10 = 4x
x = 2.5
Answer:
(1.333, 0) and (3, 0)
Step-by-step explanation:
Use desmos to input your equations then click on the solutions (zeroes)
Answer:
The mean score in the maths test for class B was 12.41 points.
Step-by-step explanation:
Given that Class A has 12 pupils and class B has 29 pupils, and both classes sit the same maths test, and the mean score for class A is 52 while the mean score for both classes is 24, to determine what is the mean score in the maths test for class B the following calculation must be performed:
52 x 12 + X x 29 = 24 x (12 + 29)
624 + 29X = 24 x 41
624 + 29X = 984
29X = 984 - 624
X = 360/29
X = 12.41
Therefore, the mean score in the maths test for class B was 12.41 points.
