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3 years ago

I don’t know what to do

Mathematics

2 answers:

barxatty [35]3 years ago

8 0

12.60 because 20% of 15 is 3 subtract 3 from 15 it is 12 and 5% of 12 is .60

sergey [27]3 years ago

4 0

20% of 15 is 12$, and tax is 5% so it comes out to 12.60$
The answer is B

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What is the missing number in the table?

mariarad [96]

Answer:

1296

Step-by-step explanation:

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36*6 = 216

216*6 = 1296

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3 years ago

What is the measure of angle B in degrees? A) 30 B) 45 C) 60 D) 90

Triss [41]

Answer:

its a 30 my friend and if its not a then choose b hope this helped

Step-by-step explanation:

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2 years ago

Solve sin 0 + 1 = cos20 on the interval 0 ≤ 0 < 2pi. Show work please!

yan [13]

Answer:

$\theta=\frac{\pi}{2},\frac{3\pi}{2}\frac{2\pi}{3}\frac{4\pi}{3}$

Step-by-step explanation:

You need 2 things in order to solve this equation: a trig identity sheet and a unit circle.

You will find when you look on your trig identity sheet that

$cos(2\theta)=1-2sin^2(\theta)$

so we will make that replacement, getting everything in terms of sin:

$sin(\theta)+1=1-2sin^2(\theta)$

Now we will get everything on one side of the equals sign, set it equal to 0, and solve it:

$2sin^2(\theta)+sin(\theta)=0$

We can factor out the sin(theta), since it's common in both terms:

$sin(\theta)(2sin(\theta)+1)=0$

Because of the Zero Product Property, either

$sin(\theta)=0$ or

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Look at the unit circle and find which values of theta have a sin ratio of 0 in the interval from 0 to 2pi. They are:

$\theta=\frac{\pi}{2},\frac{3\pi}{2}$

The next equation needs to first be solved for sin(theta):

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$2sin(\theta)=-1$ and

$sin(\theta)=-\frac{1}{2}$

Go back to your unit circle and find the values of theta where the sin is -1/2 in the interval. They are:

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2 years ago

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Aleks04 [339]

Answer:

Step-by-step explanation:

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so D

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2 years ago

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natka813 [3]

Answer:

Step-by-step explanation:

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So, |x + y| is then substituted with the numbers given for the variables.

|x + y|

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Hope this helps!

3 0

2 years ago