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True [87]
3 years ago
5

Please help me thank you

Mathematics
2 answers:
son4ous [18]3 years ago
8 0

answer is c ..........

kupik [55]3 years ago
3 0

Answer:

C) Sin 2theta = root3/2, cos 2theta = 1/2

Step-by-step explanation:

If theta is between 0 degrees and 90 degrees, that means it's in the 1st quadrant.

If you look at a labeled unit circle, the only value where sin (y-value) of theta is at pi/6 radians. That means, theta equals pi/6. So 2theta is just pi/6 * 2 which is pi/3. Sin (pi/3) is equal to root3/2.

We know 2theta is pi/3, so the cos (x-value) of 2theta on a labeled unit circle is 1/2, which means cos 2theta is 1/2.

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What is the vertex of the quadratic function y=-x²+6x+7? ​
vichka [17]

Answer:

(3,16)

Step-by-step explanation:

Factor the equation to find out that the roots are 7 and -1. The vertex's x will be in the center of these two points, so the center point between 7 and -1 is 3. Continue to substitute the x in the equation with 3 to get the other coordinate for vertex.

6 0
3 years ago
What is the meaning of an absolute value
storchak [24]

Answer:

"Absolute value" is the non-negative value of a number, disregarding whether or not it has a sign.

Step-by-step explanation:

"Absolute value" is the non-negative value of a number, disregarding whether or not it has a sign. It can be thought of as how far it is away from the number of 0, whether it's to the left or right. Absolute value of a number is written as |x|, where x = any number. Let's say x was -1. |-1| would be 1 because it's 1 away from 0. If x was just 1, then the number would stay the same.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

6 0
2 years ago
PLZ HELP I AM STUCK!
zaharov [31]
Every whole number<span> is a </span>rational number: for example, 3=31. ... Everywhole number<span> n can be written as a fraction of integers: n=n1. We aren't required to write it that way; we just need to know that it is possible to express every </span>whole number<span> as a fraction of integers, and hence it is </span>rational<span>.

So I Believe the Correct Answer would Be D)</span><span> If a number is not a rational number, then it is not a whole number. The converse is true</span>
3 0
4 years ago
HELP ME PLEASE I WILL GIVE BRAINLIEST
crimeas [40]

Answer:

Whats your question?

Step-by-step explanation:

3 0
3 years ago
Rewrite into standard form A. 4.23 x 10^-8 <br> B. 1.89 x 10^12 <br> C. 6.2 x 10^-1 <br> Pls help
svlad2 [7]
The answer would be C.
3 0
3 years ago
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