It should be acute because if A and B are complementary then B and A added together should be 90 so 90-30=60 and 60 would be an acute angle
The function is increasing on the intervals (-infinity, -2.5] and [1, infinity)
<span>Divide the US into groups, by state. For cluster sampling, randomly choose twenty states and use the population of those states as the sample. For stratified sampling, randomly choose 10,000 people from every state as the sample.</span>
Hello :
<span>f(x)=5x²+8x+5
f(10) = 5(10²)+8(10)+5 =500+85= 585</span>