Answer:
$ 1.2 and $ 0.7
Step-by-step explanation:
In this case we can solve it by means of a 2x2 system of equations, like this:
Let x is the value of clif bars
let y is the value of an apple
Thus:
4 * x + 2 * y = 6.2
5 * x + 3 * y = 8.1 => x = (8.1 - 3 * y) / 5
replacing, we are left with:
4 * ((8.1 - 3 * y) / 5) + 2 * y = 6.2
6.48 - 2.4 * y + 2 * y = 6.2
2.4 * y - 2 * y = 6.48 - 6.2
0.4 * y = 0.28
y = 0.28 / 0.4
y = 0.7
Now to calculate x:
x = (8.1 - 3 * 0.7) / 5
x = 1.2
So the value of clif bars is $ 1.2 and the value of an apple is $ 0.7
The answer for this is 101.16 aka C.
Since a pound is 16 ounces.
Multiply 5*16
Which is 80
80 ounces
- 7.6 ; - 7.399 ; - 7.0699 ; - 7.06; - 1.639; - 0.6299.
A little tip to help you with negatives: The bigger the number is, the less value it has. If you still have struggles with it, try drawing a number line for a visual. The farther away a negative number is from 0, the less value it has.
8:45
-7:35
1:10 = 70 minutes
You can subtract that way or by knowing that there are 60 minutes in an hour and 8:35 to 8:45 is ten minutes you also get 70.