Which function has real zeros at x = 3 and x = 7
Of(x) = x2 + 4x - 21
8 f(x) = x² - 4x = 21
f(x) = x2 – 10x + 21
f(x) = x2 – 10x - 21

b

step-by-step explanation:

b

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

x/3-10=8

x/3=18

x=48