We have two ways to solve this question
1)sin45=4√2 /x
√2 /2 =4√2 /x
X=8
2)Pythagorean theorem
In a 45-45-90 degree triangle
(4√2)^2+(4√2)^2=x^2
X=8
Answer:
-3
Step-by-step explanation:
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monkey B
Step-by-step explanation:
f(x) = 16x2 + 32x − 9?
Answer:
(b) -4.5
Step-by-step explanation:
Choosing the correct answer here is not the same as knowing what the correct value is.
<h3>Estimate</h3>
You know that √30 < √100 = 10, so the sum must be negative. That is, 10 subtracted from a positive number less than 10 will give a negative result.
You know that 25 < 30 < 36, so √25 < √30 <√36. That is, √30 will be between 5 and 6. If we say √30 ≈ 5.5, then the sum is ...
-10 +√30 ≈ -10 +5.5 = -4.5
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<em>Additional comment</em>
Of course, a calculator can tell you the value to the desired precision.
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