Answer:
a=3
Step-by-step explanation:
24= -3(2a-15)-a -->given
24=-6a+45-a -->distribute the -3
24=-7a+45 -->combine like terms
-21=-7a -->subtract 45 from both sides
3=a -->divide both sides by -7
Answer:
a.) Vertical Angles
b.) Given (Parallel)
c.) Substitution
Step-by-step explanation:
Simplify 2/7b to 2b/7
-1 × (2b/7 + 9) - 8
Simplify 1 × (2b/7 + 9) to (2b/7 + 9)
-(2b/7 + 9) - 8
Simplify brackets
-2b/7 - 9 - 8
Collect like terms
-2b/7 + (-9 - 8)
Simplify
<u>-2b/7 - 17</u>
An integer is like a whole number (28 is an integer).
Irrational means the decimal goes on forever.......and cannot be written as a fraction (0.9857... is irrational).
A number that is not real is the squareroot of a negative, or something times i, or dividing by zero (5/0 is unreal).
A rational number can be written as a fraction (like 8 and 1/7).