Answer:
50
Step-by-step explanation:
20 + 3n = ?
Substitute the variable for what it equals (n = 10)
20 + 3(10) = ?
Use PEMDAS to answer.
20 + 30 = ?
50 = ?
The answer is 50.
Answer:
Cubed
Step-by-step explanation:
You can think of it as the volume of a cube where the volume is x to the third power (
, let x = side of the cube) to help you remember. This also goes the same for x to the second power (squared) where it can represent the area of a square which is x².
Hope this helps :)
Answer:
x=-2
Step-by-step explanation:
2(3x – 1) = 4x - 6
Distribute
6x-2=4x-6
Moving like terms (4x)
2x-2=-6
Moving like terms (-2)
2x=-4
Divide both sides by 2 to isolate x
x=-2
Hope this helps! Please mark brainliest :)
Answer:
51
∘
and
129
∘
Explanation:
Angles that are supplements sum to
180
∘
.
This means if one angle is called
A
∘
, the other angle is
(
A
−
78
)
∘
A
+
A
−
78
=
180
2
A
−
78
=
180
2
A
=
258
A
=
258
2
=
129
∘
A
−
78
=
129
−
78
=
51
∘
Step-by-step explanation:
Answer:
y = 2
- 1
Step-by-step explanation:
y = 2
- 12x + 16
y = 2( - 6x + 8) ( Factor out 2 )
y + 9= 2( - 6x + 9) + 8 ( Complete the square 
) Add 9 both sides
y + 9 = 2 + 8 (Subtract 9 each side)
y = 2 
- 1 ( simplify )
