Answer:

16 ft/s²

Step-by-step explanation:

s(t) = sin(t) - 4cos(2t)

Differentiation for v

v(t) = cos(t) + 8sin(2t)

Differentiate for a

a(t) = -sin(t) + 16cos(2t)

At t = π

a(π) = -sin(π) + 16cos(2π)

= 0 + 16

= 16

**Answer:**

x = 2, y = -1

**Step-by-step explanation:**

To find x, use elimination.

multiply everything in x - y = 3 by 2

(x - y = 3)2

that will now become 2x - 2y = 6

now line the equations up.

4x + 2y = 6

2x - 2y = 6

Now add everything going down.

4x + 2x is 6x, 2y and -2y cancel out, and 6 + 6 is 12. the equation is now:

6x = 12

divide on each side.

x = 2

to find y, substitute 2 into x - y = 3

2 - y = 3

-y = 1

y = -1

**Answer:**

11

**Step-by-step explanation:**

The formula for the area of a triangle is bh(1/2).

We can model an equation with:

22=4x(1/2)

multiply both sides by 2

44=4x

x=11

**Answer:**

d

**Step-by-step explanation:**

**Pythagorean theorem**

**a^2 + b^2 = c^2**

C = 10

a = 6

c^2 - a^2 = 100 - 36 = 64

sqrt. 64 = 8

hope this helps

The factors of this mathematical term is (x-2)(x+1)^2