A and B are complementary, that means m∠A+m∠B=90
Recall that sinA=cos(90-A), if sinA=8/9, cos(90-A) is also 8/9
therefore, cosB=cos(90-A)=sinA=8/9<span />
Answer:
(2x+3)(x-7)
Step-by-step explanation:
✯Hello✯
↪ First you are going to want to equally split the equation into separate brackets - I've done this as (2x^2+3)+(-14x-21)
↪ Further factorise this x(2x+3)
↪ From the other bracet factor -7(2x+3)
↪ they have a common term in which we can use to make new brackets
(2x+3)(x-7)
HOPE THIS HELPS
❤Gianna❤
Answer:
B) r = C /2π
Step-by-step explanation:
C = 2πr
Divide each side by 2π
C/ 2π = 2πr/ 2π
C/ 2π = r
P = l + w + l + w or 2l + 2w
answer is A. first one.
Answer:
Negative 4 squared
Step-by-step explanation:
BIDMAS, says do brackets first, and if that’s no there indices. Here the indices are mentioned in the first 2 bracetus to, in which case you have to bother about order. What is put first must be solved first.
Hope this helps