Answer:
4
Step-by-step explanation:
-2 3/4, -2.7, -1.7, -1, -3/5, -0.5, 0.2, 1 3/4
Answer:
7
Step-by-step explanation:
200/25.50
7.8
.8 won't be a robot.
Answer=7 minivans
45/7=6.4
since you can't have 0.4 minivans, we round up 6.4 to 7
Answer:
<em>The sister's age is 8 and the brother's age is 4</em>
Step-by-step explanation:
Let's make:
x = age of the brother
y = age of the sister
x - 2 = age of the brother two years ago
y - 2 = age of the sister two years ago
Two years ago, the age of the sister was three times greater than the age of the brother:
y - 2 = 3(x - 2)
Now, the relation doubles:
y = 2x
Substituting in the first equation:
2x - 2 = 3(x - 2)
Operating:
2x - 2 = 3x - 6
Subtracting 3x -2:
2x - 3x = 2 - 6 = -4
Solving:
x = 4
y =2x = 8
The sister's age is 8 and the brother's age is 4
