Answer:
A and C
Step-by-step explanation:
Supplementary means that the angles have to add up to 180, so you have your equation.
180=5x+17x-18
198=22x
x=9
Then to find the measures of the angles, you plug x back in.
m∠ABD=5(9)=45 degrees
m∠BDE=17(9)-18=153-18=135 degrees
To write the coefficients of the 8 terms, either start with a combination of 7 things taken 0 at a time and continue to 7 things taken 7 at a time or use the 7th row of Pascal’s triangle.
For the first term, write x to the 7th power and 3 to the 0 power. Then decrease the power on x and increase the power on y until you reach x to the 0 and y to the 7.
Simplify by evaluating the coefficients and powers 3
Step-by-step explanation:
Answer:
The equation of the axis of symmetry is x = 3
Step-by-step explanation:
Perform the indicated mult., obtaining:
y = 3(x² - 6x + 9) + 4.
Mult. each term inside parentheses by 3, we get:
y = 3x² - 18x + 27 + 4, or
y + 3x² - 18x + 31
Here the coefficients are a = 3, b = -18 and c = 31.
The axis of symmetry is x = -b / (2a), which here is:
-(-18)
x = ----------- = 18/6 = 3
2(3)
The equation of the axis of symmetry is x = 3