We know that
if sin A=cos B
then
angle A and angle B are complementary angles
so
A+B=90°
in this problem
(x+21)+<span>(2x+21)=90-------> 3x+42=90-------> 3x=48-----> x=16</span>°
The answer is C:
2-4n-8n^2
you add the variables with the same exponents and the constants in (-6-n+2n^2) + (8-3n-10n^2).
The answer is Either a or B I can’t really tell by the blur of the numbers
Answer:
2.25 pounds of flour per dollar
Step-by-step explanation:
9 ÷ 4 = 2.25
