Answer:
5d-2e
Step-by-step explanation:
Answer:
8.16
Step-by-step explanation:
hundredth means two decimal places. since 7 is greater than 5, we have to add 1 to 5 which makes it 6
For cos(2x) * (2cos(x) + 1) = 0, use the double angle identity for cos(2x), which is cos^2 x - sin^2 x = cos^2 x - (1-cos^2) = 2cos^2 x - 1.
So we have (2cos^2 x - 1)(2cos x + 1) = 0. So 2cos^2 x -1 = 0 or x = 0 and 2pi.
For 2sec^2 x + tan^2 x - 3 = 0, use the identity sec^2 x = tan^2 x + 1, so we have
2(tan^2 x + 1) + tan^2 x - 3 = 0 or
<span>2tan^2 x + tan^2 x - 1 = 0 or
</span>3 tan^2 x = 1.
So x = pi/2, pi/2 + pi = 3pi/2.
Answer:The perimeter =12w
Step-by-step explanation:
Let the width represent W and Length represent L
Length= 5 x width
L=5W
W=W
Since perimeter =2(L+w)
Substitute for L=5w
=2(5w+w)
=2(6w)
=12w