Answer:
<h2>Zero</h2>
Step-by-step explanation:
68+70=180
=138=180
=180-138
=42 degrees (using angle sum property of triangles
Hope this helps you
a. n-(n - 1) = 1
b. n( n - 1) = n² - n
c. (n - 1) + n = 2n - 1
d. (n - 1) + n = 2n - 1
<h3>Solution:</h3>
General Rule for Equation Solving
- Remove parentheses and combine like terms to simplify each side of the equation.
- To isolate the variable term on one side of the equation, use addition or subtraction.
- To find the variable, use multiplication or division.
Given two consecutive numbers , (n - 1) , n
simplifying :
n - (n - 1)
= n -1(n - 1)
= n - n + 1
= 1
multiplying :
n( n -1)
= n² - n
simplifying :
(n-1) + n
= n - 1 + n
= 2n -1
by adding two numbers :
(n - 1) + n
= n -1 + n
= 2n - 1
To learn more about equations refer to :
brainly.com/question/22688504
#SPJ13
Answer:
19, 24
Step-by-step explanation:
the pattern adds one then adds five
+1, +5, +1, +5, on and on
6+1 is 7
7+5 is 12
12+1 is 13
13+5 is 18
18+1 is 19
19+5 is 24
Bsbsvsvsvsvsvsvvzvzvzvzvzvz
