**Answer:**

8 sqrt(5)

**Step-by-step explanation:**

sqrt(45) + sqrt(125)

Rewriting

sqrt(9*5) + sqrt( 25 *5)

we know sqrt(ab) = sqrt(a) sqrt(b)

sqrt(9) sqrt(5) + sqrt(25) sqrt(5)

3 sqrt(5)+5 sqrt(5)

Add like terms

8 sqrt(5)

Answer:it’s 6.4 you’re welcome

Step-by-step explanation:

**Answer:**

why is there an N not paired up with A at the beginning, and an A without an N at the end? oh my gosh dude pair them up theyre lonely

**Step-by-step explanation:**

**Answer:**

80

**Step-by-step explanation:**

x³ + x²

4³ + 4²

64 + 16

80

**Answer:**

y = -2 sin x

**Step-by-step explanation:**

As a basic,

y = cos x has a value of 1 at x = 0, and

y = sin x has a value of 0 at x = 0

__Note:__ the value 1 can change to 2, 3, 4, etc. if the amplitude increases

Looking at the graph at x = 0, we see the y-value is 0, so definitely this is a sin graph. We can eliminate the cos choices.

*So is it y = 2 sin x or y = -2 sin x??*

If the graph goes downward from 0 (at x = 0), it is reflected of original, so that would be y = - sinx.

**Since the graph decreases (goes downward) from x = 0, it is definitely the graph of negative sin. So y = - 2 sin x**