Answer:
<em>Proof in explanation</em>
Step-by-step explanation:
<u>Trigonometric Identities</u>
The basic trigonometric identity is:
We'll use it and some basic algebra to prove that, given:
And
Then
From the equation:
We have:
The equation
Can be rewritten as
Replacing [1]:
Taking the common factor:
The expression in parentheses is 1, thus:
Dividing by
Replacing in
We have
Dividing by
Now:
This expression is 1, thus it's proven:
Answer:
B: Ella got a higher ratio on this week's test.
Step-by-step explanation:
Lets gather info:
13:15 and 16:20.
So, is
Ok. 13/15 is 0.87.
16/20 is 0.8
So Ella got a higher ratio on this weeks test.
So B.
Hope this helps plz hit the crown :D
Answer:
No.
Step-by-step explanation:
Answer:
1/8
Step-by-step explanation:
( 2^-1 / 2^0) ^3
First simplify inside the parentheses
We know that a^b / a^c = a^(b-c)
2^(-1-0) = 2^-1
( 2^-1 ) ^3
Then we know that a power to a power is
a^b^c = a^(b*c)
2^(-1 *3)
2^ -3
Then a negative exponent makes it a fraction
a^ -b = 1/a^b
1 /2^3
1/8