-20+15+30+-45=-20
-20/4=-5
The average is -5
Answer:
The first one is most likely to happen
Step-by-step explanation:
Answer:
9.333333333333333333333333
Step-by-step explanation:
1. 6(5g) +12g = 21 30g + 12g = 21 42g = 21, therefore g = 21/42 = 0.5 liters p = 5 * 0.5 = 2.5 liters
2. 20 - 12 = 8 oranges;11 - 6 = 5 pears;
8 oranges costs as much as 5 pears;
But, 5 pears costs 5 × 0.80 = $4;
Then, an orange cost 4 ÷ 8 = $0.5
3.Let one pipe be x
The other pipe is 7 times as long = 7x
When he cuts 2.2 m from the longer pipe the remaining length is = 7x – 2.2 (7x is the longer pipe of x and 7x!)
When he cuts 2.2 m from the longer pipe the remaining length is 3 times that of the shorter pipe.
7x-2.2 is 3 times x
7x-2.2 = 3x
7x-3x = 2.2
4x = 2.2
X= 2.2/4 = 0.55 m (this is the length of the shorter pipe in meters)
Answer:
-1/13
Step-by-step explanation:
-5 - (-4) over 7- (-6)
That equals -1 over 13, or -1/13