1) 109 Explanation: do what is in the () first so 3^2 is going to turn into 9 which is the equation is now going to be 145-(9x4). 9x4 is 36 so it is 145-36 which gives you 109.
2) 52 Explanation: 45 divided by 9 is 5 then 5 times 12 gives you 60. equation now is 60-8 which equals 52.
3) 4 Explanation: 3 times 4 is 12. equation now is 2^2+12-12. all is left is 2^2 which is 4.
4) 89
5)111
6)72
The solution to the problem is as follows:
<span>cos2A - cos4A = -2 sin(6A/2).sin(-2A/2) = +2 sin(3A).sinA
and
sin4A - sin2A = 2 cos(6A/2).sin(2A/2) = 2 cos(3A).sinA
Hence RHS = (cos(2A)-cos(4A))/ (sin(4A)- Sin(2A)) = sin 3A / cos 3A = tan 3A = LHS
</span>
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Answer:
Step-by-step explanation:
The key here is to find out how much he makes per hour. We can find that out using the info given.
286 = 13x so
x = 22 dollars per hour. For 7 hours of work then,
7(22) = $154
Answer:
21 inches
Step-by-step explanation:
f(x)=1.5x+3
f(12)=21
3(n-8)=2n-2
3n-24=2n-2
Subtract 2n from both sides to get
n-24=-2
Adding 24 to both sides gives you
n=22. The number therefore is 22. Hope this helps!!!
