The simpliest way to do this is to turn both fractions into decimals
7/10 goes to 0.7 and 2/5 goes to 0.4
then the equation would be 0.7x + 20 = 0.4
hope I've helped!
Answer:
<h2>slope m = 4</h2>
Step-by-step explanation:
The formula of a slope:
We have the points
Substitute:
Answer:
31.5 hours
Step-by-step explanation:
Given that 1 unit of electricity is consumed in 3 hours by 1 fan, it means that 2 fans will consume 1 unit in
= 3/2 hours
= 1.5 hours
If 2 fans consume 1 unit in 1.5 hours then 21 units will be consumed in
= 21 * 1.5/1
= 31.5 hours
It means he used the fans for 31.5 hours
3x + 8 = 17
Subtract 8 from both sides
3x + 8 - 8 = 17 - 8
Simplifying
3x = 9
Divide both sides by 3
3x/3 = 9/3
Simplifying
x = 3
Answer
x = 3
Reinterpreting the question, it's asking us to find which coin has a closer probability to 50% of getting either heads or tails.
Coin A
205 / 500 = .41 = 41%
Coin B
120 / 250 = .48 = 48%
Since 48% is closer to 50% than 41% is, coin B is the fairest.