Which of the following statements regarding pascal's triangle are correct?
a. each row is a \"palindrome\" — that is, it is the same if read from left to right or from right to left.
b. the coefficients of (x + y)n are given by the nth row of pascal's triangle.
c. to generate pascal's triangle, add adjacent terms on a row to determine the term directly below them.
d. the nth row gives the coefficients in the expansion of (x + y) n-1.

the correct answer is B,A,C. Letters may differ

me! what did you put for this question?

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.