the answer in standard form is 10+3
Decimal form: 4.05, 0.5
Exact form: 9/2, 1/2
(3a-4b)²
= 9a² - 12ab + 16b²
Answer: 24 & 72
Step-by-step explanation: 24 + 72 = 96
24 x 72 = 1728
2x+38=180
2x=142 (or x+x=142 from which 2x=142)
x=71
The unknown angles are each 71
You know this answer is logical as, since two sides are 21 it hints that we are looking at an equilateral triangle, which means two of its angles will be the same
