Answer:
nitrogen
Step-by-step explanation:
By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%
The cost price of each pair of socks is 3 dollars and 97 cents
The total money paid by Jessica for 4 pair of socks = $20
The money that the cashier returned = $4.12
It is also given that, each pair of sock would cost same price
We need to find, The cost price of each pair of socks
To do that, first let's find
The amount that was paid for 4 pair of socks = 20 - 4.12 = $15.88
Now,
The cost price of one pair of sock = 
= $3.97
= 3 dollars and 97 cents
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Jason earns 680$ in 40 hours.
Step-by-step explanation:
- Property used to solve this problem is <em>Algebra.</em>
- Jason earns <em>17$</em> which is fixed earning irrelevant of hours.
- hours is variable which means <em>n</em>.
- how much will he earn = 17 * number of hours (n).
- For n = 1, amount of money he would earn = 17 *1 = 17$
- For n =2, amount of money he would earn = 17 *2 = 34$
- For n = 3, amount of money he would earn = 17*3 = 51$
- For n = 40, amount of money he would earn =17*40 = 680$
- Algebra is branch of mathematics which help in puzzles and many problems from day to day life.In Algebra letters stands numbers and there operations can be done in the numbers.
Answer:
x = - 1
Step-by-step explanation:
Given
(x - 5)(- 3) = 18
Divide both sides by - 3
x - 5 = - 6 ( add 5 to both sides )
x = - 1
OR
distribute the left side by - 3
- 3x + 15 = 18 ( subtract 15 from both sides )
- 3x = 3 ( divide both sides by - 3 )
x = - 1
