Answer:
Only C
Step-by-step explanation:
A = 3D
J = 7 + D
A: Alice doesn't necceserily have more stamps than Jane ( Jane could have 8 + 4 = 12 stamps, and Alice would have 3 + 4 = 7) (This is false)
B: Jane will ALWAYS have 7 more stamps than Doris (if all values are increased by same amount). (This is false)
C: The Sum of Alice and Doris is D + 3D = 4D, so C is true
Time = distance / speed
Time = 600m / 10m/s
Time = 60 seconds (1 minute)
Answer:

Step-by-step explanation:
We have the inequality:

Solve. Divide both sides by -2. Since we are dividing by a negative, we must flip the inequality sign. Thus:

Add 5 to both sides:

Therefore, our solution is all numbers greater than 11 .
This means that if we substitute any number greater than 11 into our original inequality, the inequality will be true.
Answer:
$13
Step-by-step explanation:
Given that :
Increase in salary factor = 11/10
New salary = $14.30
Initial salary = x
To obtain the value of the initial salary,
The product of the scale factor by the initial salary sgiuf give the amoi tof the new salary
11 / 10 * x = 14.30
1.1x = 14.30
x = 14.30 / 1.1
x = $13
Hence.initial salary per hour = $13
_____
1.7 | 45.78
ok....we want to make the 1.7 into a whole number....we do this by moving the decimal 1 space to the right.....and since we move the decimal one space on the divisor, we need to move the decimal 1 space on the dividend.
so ur problem would now be :
______
17 | 457.8