Answer:
Take the square root of each side of the equation to set up the solution for
x
(
3
x
−
5
)
2
⋅
1
2
=
±
√
19
Remove the perfect root factor
3
x
−
5
under the radical to solve for
x
.
3
x
−
5
=
±
√
19
The complete solution is the result of both the positive and negative portions of the solution.
Tap for more steps...
x
=
√
19
3
+
5
3
,
−
√
19
3
+
5
3
The result can be shown in multiple forms.
Exact Form:
x
=
√
19
3
+
5
3
,
−
√
19
3
+
5
3
Decimal Form:
x
=
3.11963298
…
,
0.21370035
…
Answer:
where is the question?
Step-by-step explanation:
Simplifying makes a algebric expression easily understandable and solvable.
Answer:
c
Step-by-step explanation:
Easiest way is drawing the vectors.
If you need a better reason you can get it through dot product.
Let X be the angle needed.
Dot product of two vectors is defined as
A •B = |A||B|cosX
where X is the angle between A and B
cosX=A•B/ |A||B|
=(-1×-9+1×0) / (√(-1^2+1^2)×√(-9^2))
=1/√2
So the answer is X=45°
