Answer:B
Step-by-step explanation:
Multiplying through by 8 we get
2x + 8 = 3x
8 = 3x - 2x
x = 8 (answer)
Answer:
a=1; b=14
Step-by-step explanation:
you have to form a perfect square
(a+b)²=a²+b²+2ab
If you add a one you will get a perfect square
x²+2x+1 = (x+1)²
if you added a one in one side you have to added to the other side too
(x+1)² = 13+1
(x+1)² = 14
The value of x in the triangle with angles 80, 40 and (13x - 5) degrees is 5.
<h3>Sum of angle in a triangle</h3>
The sum of angle in a triangle is equals to 180 degrees. Recall a triangle have three sides. Therefore,
80 + 40 + 13x - 5 = 180
120 - 5 + 13x = 180
115 + 13x = 180
subtract 115 from both sides of the equation
115 - 115 + 13x = 180 - 115
13x = 65
divide both sides by 13
13x / 13 = 65 / 13
x = 5
learn more on triangle here: brainly.com/question/15268683
Answer:
-60
Step-by-step explanation:
=angle -360°*{angle/360}
=300-360*300/360
=-60