У 1. Explain how you know the right triangles are similar.
2. Write a ratio that is equivalent to
3. Which ratios of side lengths are equal to tan(a)?
4. Explain why the values of the trigonometric ratios only depend on the angle a and
not on the particular lengths 2, 4, 2,4,7, s.
5. If 4 = 0.7, what is the measure of a to the nearest degree?

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

only 10/60 isn't equivalent

hope this : )

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