First, expand
(2x + 3)² = (2x + 3)(2x + 3)
Use the FOIL method (First, Outside, Inside, Last)
(2x)(2x) = 4x²
(2x)(3) = 6x
(3)(2x) = 6x
(3)(3) = 9
4x² + 6x + 6x + 9
Combine like terms
4x² (+6x + 6x) + 9
4x² + 12x + 9
4x² + 12x + 9 is your answer
hope this helps
(7x -7) + (6x +6) = 90
take away the parenthesis: 7x - 7 + 6x + 6 = 90
combine like terms: 13x - 1 = 90
add 1 to both sides: 13x = 91
divide both sides by 13: <span>x = 7.
Now: substitute x = 7 into the angles: the first angle is 42 degrees, the second angle is 48 degrees</span>
Answer:
Linear
Step-by-step explanation:
Don't worry I just know, give me Brainliest
Answer:
Step-by-step explanation:
I multiplied every coordinate by 1/3
The coordinates are in the attachment below
Answer:
x = 6.6
Step-by-step explanation:
Data obtained from the question include the following:
Angle X = 15°
Angle Y° = 23°
Side y = 10
Side x =..?
The value of side x can be obtained by using the sine rule as shown below:
x/Sine X = y/Sine Y
x/Sine 15 = 10/Sine 23
Cross multiply
x × Sine 23 = 10 × Sine 15
Divide both side by Sine 23
x = (10 × Sine 15) / Sine 23
x = 6.6
Therefore, the value of x is 6.6.