Inequalities
Chua pays a monthly fee of $25 for his phone service, plus $0.05 per minute of use.
Let M = number of minutes Chua uses the phone service.
His monthly cost for the phone service is:
C = 25 + 0.05M
The least he has been charged in a month is $89.40. If we want to know the number of minutes he used the service in that month, then we must solve the inequality:
25 + 0.05M ≥ 89.40
Subtracting 25:
0.05M ≥ 89.40 - 25
Operating:
0.05M ≥ 64.40
Dividing by 0.05:
M ≥ 64.40 / 0.05
M ≥ 1288
He has used his phone service at least for 1288 minutes in a month
Answer:
$12
Step-by-step explanation:
setting up a proportion and putting 20 of 100 and 60 over x, we multiply 60 and 20 then divide one hundred from both sides leabing. We should have 100/x = 1200/100. Doing this gives us x = 12.
The answer is 6 1/4, because if you making 1/2 = 2/4, 2 + 3 = 5, the 4 stays the same, so its 5 5/4, and to make it proper, you make it 6 1/4
Answer:
Noor was right because the answer is 324
Step-by-step explanation:
the BODMA rule of solving the expression the bracket first before applying the index or before multiplying.
The correct way of solving the expression is
18 x 4x 4 + (9-3)(9-3)
= 18×16 + 6×6
= 288 + 36
= 324
But
Roopa solved it this way instead
18 x 4x 4 + (9×9-3×3)
= 18×16 + (81-9)
= 288 + 72
= 360
So, Noor was right while Roopa was wrong
