A proof uses logical reasoning that starts with accepted ideas and proceeds through logic to reach a conclusion.

1 answer:

3 0

Inductive reasoning looks at given information, and makes generalizations about them, Deductive reasoning comes to conclusions based on previously known facts. The answer should be Deductive Reasoning.

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Perform the division and leave the result in trigonometric form.

Anettt [7]

Answer:

$\frac{1}{2}$ ( cos40° + isin40°)

Step-by-step explanation:

To divide

$\frac{r_{1(cosx_{1}+isinx_{1}) } }{r_{2}(cosx_{2}+isinx_{2}) }$

= $\frac{r_{1} }{r_{2} }$ [ cos(x₁ - x₂) + isin(x₁ - x₂)

Given

$\frac{2(cos90+isin90}{4(cos50+isin50)}$

= $\frac{2}{4}$ ( cos(90 - 50)° + isin(90 - 50)°

= $\frac{1}{2}$ ( cos40° + isin40° )

8 0

3 years ago

A new car worth $20,000 loses 20% of its value every year. Is the value of the car represented by a linear or exponential functi

madreJ [45]

Exponential.

One way to think about this, is to ask how much you will lose each year. The first year you're losing 20% of $20,000 ($4,000). The second year you're losing 20% of 16,000 ($3,200). The dollar value your car loses each year diminishes exponentially, so it is not a linear but an exponential function.

7 0

3 years ago

Simplify the expression write the answer in scientific notation (9×10^7) <br>(7×10^9)

aliina [53]

$\text{The scientific notation}\ a\cdot10^k,\ \text{where}\ 1\leq a$