Answer:
7.04
Step-by-step explanation:
The computation is shown below:
Given that
220 would be divided by 31.25
i.e.
= 220 ÷ 31.25
= 7.04
After dividing the 220 from 31.25 it provides an answer i.e. 7.04
I am pretty sure the answer is C because that would be the least biased with the most information.
A would be biased because it is only elementary.
D is biased because it is only teachers that worked for a long time
B is fine, but C is better because it has more people.
Answer: The trick to this question is twofold:
Spot that 94 is double 47. Therefore when going downstream, the speed of the boat relative to the earth is double it's speed going upstream as it covers double the distance in the same time.
Understand that whatever the speed of the boat is, when going downstream it's speed relative to the earth is 6mph greater than speed relative to the water, and conversely when going upstream, earth speed is 6mph less than water speed.
So, if the speed through the water is X, upstream speed is (X-6) and downstream speed is (X+6).
Now, we know that upstream speed is double downstream speed, so:
Double (x-6) is equal to (X+6)
Or:
2(x-6)=(X+6)
Answer:
x = 2
Step-by-step explanation:
Distribute the 1/2 on the left side to each term
1/2 * 10x + 1/2 * 4 = 12
Now multiplication first before addition on the left side.
5x + 2 = 12
Subtract 2 on both sides
5x = 10
Divide by 5 on both sides
x = 2
Check work
1/2(10(2) + 4) = 12
1/2(20 + 4) = 12
1/2 * 24 = 12
24/2 = 12 = 12
D: 210,000 times 40,000 = 8,400,000,000
