Answer:
A, B, & D
Step-by-step explanation:
A. isosceles - 2 sides equal (actually) all sides are equal
B. equilateral - all sides equal and all angles are equal too
D acute - all angles are less than 90 degrees
12150 ft^3
= (45)(20)(10) + (350)(9)
= 9000 + 3150
= 12150 ft^3
See below.
First box is 7x. second is 7+x,third is x-7 last is 2x +7
B. 5 : 21
Vowels: a, e, i, o, u= 5 vowels
Constants: b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z: 21 constants
v : c
5 : 21
