5 - 3 x
= 5 - 3 (-7)
= 5 + 21
= 26
Let the first number be x
The second number is x + 2
The third number is x + 4
x + x + 2 + x + 4 = 270
3x = 270 - 6
x = 88
x is not prime so there is no first number!
Justify "<span>x2 = 25 is {±5}"
First, please write x^2, not x2.
</span><span>x^2 = 25; solve for x. Take the sqrt of both sides. Must write "plus or minus " in front of the sqrt of 25:
x^2 = 25 becomes x = plus or minus 5, so x: {-5, 5}</span>
Answer:
x > 29
Step-by-step explanation:
-x < -29
~Divide -1 to both sides
x > 29
Best of Luck!
Answer:
This means that there were 45 total problems.
Step-by-step explanation:
To find the total number of problems, add all of the different categories together.
Total = Himself + With Sal + Left
Total = 23 + 13 + 9
Total = 45
