What is (2.1) ⋅ (4.7) and why?
2 answers:
bcs in (2.1).(4.7),<em> </em><em>the</em><em> </em><em>middle</em><em> </em><em>one</em><em> </em><em>dot</em><em> </em><em>means</em><em> </em><em>multiplication</em><em>.</em><em>s</em><em>o</em><em> </em><em>we</em><em> </em><em>have</em><em> </em><em>to</em><em> </em><em>multiply</em><em>.</em>
<h2><em><u>hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>will</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em></h2>
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Answer:
A
Step-by-step explanation:
We want to solve the equation:
To do so, we can rewrite the equation.
Recall the double-angle for sine:
By substitution:
Distribute:
We can subtract 3cos(x) from both sides:
And factor:
Hence, our answer is A.
*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.
Answer:
10 < < 11
Step-by-step explanation:
The square root of 111 is approximately 10.536.
A number smaller than this is 10.
A number larger than this is 11.