Answer:
The answer is -8
Step-by-step explanation:
2(-4)
2*(-4) = -8
<span>exact value of sin 157.5 without using a calculator
sin(157.5)=sin(315/2)
Identity: sin(x/2)=±√[(1-cosx)/2]
select positive identity since 175 is in the 2nd quadrant where sin>0
sin(315/2)=√[(1-cos315)/2]
cos 315=cos45 in quadrant IV=√2/2
sin(315/2)=√[(1-√2/2)/2]=√[(2-√2)/4]=√(2-√2)/2
sin(157.5)=√(2-√2)/2
check using calculator:
sin157.5º≈0.382...
√(2-√2)/2≈0.382...</span>
Answer:
52 Chapters
Explanation:
26 chapters for every 1 hour
26 chapters (1 hour) + 26 chapters (1 hour) = 52 chapters (2 hours)
Answer:
you graph the points on the line
Answer:
6 Quarters and 18 Dimes
Step-by-step explanation:
18 x 0.10 = $1.8
6 x 0.25 = $1.5
$1.5 + $1.8 = $3.30