1/4 + 2/7 =
The denominators 4 and 7 lcm are 28
So,
1/28 + 2/28 = 3/28
3/28 is the answer to your question.
This is the same as the other one except no division at the end:

Taking square roots, we need to remember the plus or minus:


That's a positive 8 and either sign on the square root.
Answer: D E
To find this, we have to multiply the total amount of gas the tank can hold (40 gallons) by how much gas is in the tank (93.5% or .935 as a decimal). When we do this we get the amount of gas 37.4 gallons.
Answer:
B. 5/6
Answer explained:
Prime numbers include 2, 3, and 5 and all numbers after 3 are 4, 5, 6 so 5 out of 6 or 5/6