2x2-6x= - 8
Simplify both sides
2x(2) = 4x
Combine like terms
4x + (-6x) =-8
-2x = -8
Divide each side by -2
X = 4
Answer: 21 , 72 , 75
Step-by-step explanation:
The one that could represent the three sides of a right angle triangle must obey Pythagoras theorem , that is
a = side of right triangle
b = side of right triangle
c = hypotenuse
Let's check the sides one after the other
1.
this means that
this could represent the three sides of a right triangle
2.
3.
4.
Therefore , the only combination that could represent the three sides of a right triangle will be 21 , 72 , 75
Light it up like dynamite oh
Step-by-step explanation:
1.134 is your answer to your question
Hey there! :)
Answer:
Choice C: x + 8 = 3x.
Step-by-step explanation:
Solve this question by simplifying each answer choice:
a) 4x = 20
Divide both sides by 4:
4x/4 = 20/4
x = 5. This is incorrect.
b) x/2 = 8
Multiply both sides by 2:
x = 16. This is incorrect.
c) x + 8 = 3x
Subtract x from both sides:
8 = 2x
Divide 2 from both sides:
x = 4. This is correct.
d) x = x+5 /2
Multiply both sides by 2:
2x = x + 5
Subtract x from both sides:
x = 5. This is incorrect.
Therefore, choice C is the correct answer.