Answer: 8/15 + 2/5 = 0.93etc or 14/15
Step-by-step explanation:
Let 70% of X = 98
70%.x = 98
(70/100).x = 98
0,7x = 98
x = 98/0,7
x = 140
Then, 90%x = 90%.140
= 0,9.(140)
= 126
The answer to this question is Letter D)
I hope this has helped.
I assume you're asked to solve
4 cos²(<em>x</em>) - 7 cos(<em>x</em>) + 3 = 0
Factor the left side:
(4 cos(<em>x</em>) - 3) (cos(<em>x</em>) - 1) = 0
Then either
4 cos(<em>x</em>) - 3 = 0 <u>or</u> cos(<em>x</em>) - 1 = 0
cos(<em>x</em>) = 3/4 <u>or</u> cos(<em>x</em>) = 1
From the first case, we get
<em>x</em> = cos⁻¹(3/4) + 2<em>nπ</em> <u>or</u> <em>x</em> = -cos⁻¹(3/4) + 2<em>nπ</em>
and from the second,
<em>x</em> = <em>nπ</em>
where <em>n</em> is any integer.
Answer:
<h3>(6x²-11x) is the right answer.</h3>
Answer:
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Step-by-step explanation:
