If you can please help me it would me a lot

59.62075 (if you use 3.14 for pi) 59.65099051 ( if you just use regular pi)

Step-by-step explanation:

i personally use 3.14 for pi. its just easi×er.

so the surface area formula for a cone is

π + π

since the formula is looking for radius and not diameter, we change 3.5 to 1.75 (3.5 ÷ 2)

so it would be

(3.14×1.75×9.1) + (3.14×)

which that equals

59.62075

hope this helps!! <3

D

B

Step-by-step explanation:

1. x² - 5x = 14

x² -5x -14 = 0

x² +2x -7x -14 = 0

x(x + 2) -7(x + 2) = 0

x - 7 or x + 2 = 0

x = 7 or x = -2

2. y² + 6y + 9 = 49

y² + 6y +9 -49 = 0

y² +6y -40 = 0

y² +10y -4y -40 = 0

y(y + 10) -4(y + 10) = 0

y -4 or y + 10 = 0

y = 4 or y = -10