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Dmitry [639]
3 years ago
9

Prove that : tan^2(theta) - tan^2(alpha) = sec^2(theta) - sec^2(alpha)​

Mathematics
1 answer:
seropon [69]3 years ago
8 0
The answer to life is 42
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Lnes made9 necklaces with 60 beads on each necklaces. How many beads did she use in all
Gala2k [10]
Made 9  necklaces.
60 beads per necklace.
How many beads for all the 9 necklaces?

60 × 9 = 540

9 necklaces = 540 beads<span />
3 0
3 years ago
What is the image of C for a 90 degree counterclockwise rotation about A?
Mashcka [7]

counter clockwise would be rotating it up to the right.

C is 4 spaces away from A ,

 A is on X3 & Y3 so 4 +3 = 7

so it would be x7 & Y3 so (7,3), the first answer

3 0
3 years ago
Read 2 more answers
The explicit rule for a sequence is an=5(−2)^n−1
Murrr4er [49]

Answer:

3) a_n=-2a_{n-1}, a_1=5

Step-by-step explanation:

Given that the explicit rule for a sequence is a_n=5(-2)^{n-1}.

Now we need to find about what is the recursive rule for the sequence and match with the given choices to find the correct choice.

1) a_n=-2a_{n+1}, a_1=5

2) a_n=-5a_{n+1}, a_1=2

3) a_n=-2a_{n-1}, a_1=5

4) a_n=-5a_{n-1}, a_1=2

Plug n=1 into given formula to get first term

a_n=5(-2)^{n-1}

a_1=5(-2)^{1-1}=5(-2)^{0}=5(1)=5

base of the exponent part is (-2) so that means we need to multiply -2 to the previous term to get nth term

Hence correct choice is: 3) a_n=-2a_{n-1}, a_1=5

7 0
3 years ago
What if 30% of volcanoes were in california?
EleoNora [17]
Then 70% of volcanos wouldn't be in California.
7 0
3 years ago
Which statement is true about the equations –3x + 4y = 12 and 1/4x –1/3 y = 1?The system of the equations has exactly one soluti
iren [92.7K]

Answer:

The system of the equations has no solution; the two lines are parallel.

Step-by-step explanation:

The equations have the same slope. In standard form, this can be seen as the same coefficients for x and y. We will multiply the second equation by -12 to reveal this.

\frac{1}{4} x-\frac{1}{3}y=1 \\-12(\frac{1}{4} x-\frac{1}{3}y=1)\\\frac{-12}{4} x-\frac{-12}{3}y=-12\\-3x+4y=-12

This means the equations are parallel and will never cross. There is no solution.

4 0
3 years ago
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