Answer:
a= 40
Step-by-step explanation:
-5a + 7.5a - 25 = 53.2 + 21.8
add like terms on both sides: 2.5a - 25 = 75
add 25 on both sides: 2.5a = 100
divide both sides by 2.5: a = 40
8368 is 10 more than 8358
Answer:
0.50
Step-by-step explanation:
There are 4 possibillities. 2/4 (or 1/2) of the possibillities are money and the other half is nothing. 1/2 = 0.50
94 Points must be scored in order to get an average of 90 for his grade.
