This question is asking us to find where sin(2x + 30) has a sin of 1. If you look at the unit circle, 90 degrees has a sin of 1. Mathematically, it will be solved like this (begin by taking the inverse sin of both sides):

$sin^{-1}[sin(2x+30)]=sin^{-1}(1)$

On the left, the inverse sin "undoes" or cancels the sin, leaving us with

2x + 30 = sin⁻¹(1)

The right side is asking us what angle has a sin of 1, which is 90. Sub that into the right side:

2x + 30 = 90 and

2x = 60 so

x = 30

You're welcome!

4 0

3 years ago

In a survey of 3,500 people who owned a certain type of car, 1,225 said they would buy that type of car again. What percent of

Elis [28]

3,500 x .35 = 1,225.
So move the decimal to the right 2 places & that gives you 35% of the people were satisfied with the car.
I would not buy that car!

7 0

3 years ago

Is the following always sometimes or never true? 5(x+12)=5x+12

UkoKoshka [18]

It is never true

........

7 0

3 years ago

At a shelter 15% of dogs are puppies there are 60 dogs at the shelter. How many are puppies?

Vesnalui [34]

9 of them are puppies because 15 percent of 60=9

6 0

4 years ago

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