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hichkok12 [17]
4 years ago
14

Someone do number 17 pls, I’ll mark you as brainly

Mathematics
1 answer:
Strike441 [17]4 years ago
3 0

See the attached picture for the solutions:


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In which quadrants does sin and cos have opposite signs.
Romashka [77]
Quadrants 2 and 4 because in quadrant 2, cosine is negative and sin is positive, while in quadrant 4, cosine is positive and sin is negative
8 0
3 years ago
A rectangle has a height of 2x^4 with a width of x^2+8x+15. Express the area of the rectangle.
Amiraneli [1.4K]

Hi there!

We know that the formula for the area of a rectangle is height * width. Thus, we can multiply these two expressions together:

2x^4\cdot (x^2+8x+15)\\

Now, we know through the distributive property that we can distribute the 2x^4\\ to everything in the parenthesis. Once this is done, we get:

2x^4 \cdot x^2+2x^4\cdot8x+2x^4\cdot15

Now, we know through the power rule that when two exponents are multiplied together with the same base, the exponent can be added together (x^a \cdot x^b = x^{a+b}). This then would make our equation:

2x^{4+2}+16x^{4+1}+30x^4\\

Giving us for our final answer:

2x^{6}+16x^{5}+30x^4\\

Hope this helps!

8 0
3 years ago
The button on Sam's calculator that calculates the sine of an angle is broken.
Galina-37 [17]
Tan 18 = opposite side/adjacent side

0.3249 = 4/adjacent side

and adjacent side = 4/0.3249 = 12.31

Now let's apply Pythagoras to find x

4² + 12.31² = x²
16 + 151.55 = x²   and x² = 167.55 
Then x = √167.55 and x = 12.94 ≈ 13

3 0
3 years ago
If 1 ft equals 0.305 m how many feet are there in 305 meters
Yuliya22 [10]

305/0.305 = 1000

There are 1000ft in 305m.

5 0
4 years ago
Read 2 more answers
PLEASE PLEASE HELP ME PLEASE I AM SO DUM I DONT KNOW THE ANSWER PLEASE JUST HELP ME
pogonyaev

Answer:

Cougar population was 790 at the beginning

830-790=40

3 0
3 years ago
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