Answer:
Step-by-step explanation:
Reference angle = 30°
Opposite side = x
Adjacent side = 2
Apply the tan trigonometric function, thus:
(tan 30 = 1/√3)
Rationalize
The best and most correct answer among the choices provided by your question is the second choice or letter B. 12
Substituting b = 12:
x^2 + 12x + 36 = (x + 6) ( X + 6) ; therefore, a perfect square.
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Answer:
<em>x = - √10, and x =√10</em>
Step-by-step explanation:
1. Let us add 3 to either side of the equation: x^2 - 3 + 3 = 7 + 3
2. That equation would simplify to: x^2 = 10
3. Now let us take the square root on either side: √x^2 = √10
4. Being square root of x^2, we could say that: | x | = √10
5. And thus 2 answer may be derived from this equation provided absolute value symbol ( | | ): <em>x = - √10, and x =√10</em>
Answer:
They make 4 approximately tons of oxygen each year.
Step-by-step explanation:
( 250lbs × 32 ) ÷ 2000 = 4t
250 pounds because each tree makes about 250 pounds of oxygen a year.
× 32 because there are 32 trees, so they'll make 32 times more oxygen than one tree.
÷ 2000 because before that everything was in pounds, and the question asks about tons. There are 2000 pounds in a ton, so you divide by 2000 to get the answer, which is 4 tons.
