Answer:

Step-by-step explanation:
The formula of a lateral area of a cone:

r - radius
l - slant height
The formula of a surface area of a cone:

We have r= 8in and l = 21in. Substitute:


Answer:
x=90°
y=55°
Step-by-step explanation:
A
D
C
B
let the triangle be named ABD
angleABD= 1/2 angleACD[ being angle formed at same
] arc
=1/2×180
= 90
now,
angleX + angleY + 35° = 180 [ sum of the angle
of the triangle]
90 + Y + 35 = 180
Y= 180-125
Y = 55
Answer:
100-10 = 15x
Step-by-step explanation:
You are subtracting 10 because that is how much is still left, its not included in the total spent.
15 represents the money spent per shirt, and x is the amount of shirts purchased
Answer:
d) 2x^2 + 2x -59
Step-by-step explanation:
(x-8)(x+4) + (x-3)(x+9) *multiply each term (...)(...)*
x^2 - 4x - 32 + x^2 + 6x -27 *combine like terms*
2x^2 +2x - 59
Y=mx+b
-3=1(1)+b
-3=1+b
-3-1=1-1+b
-4=b
y=1x-4