**Answer:**

c is -1/20

**Step-by-step explanation:**

sorry, i don't know how to get the answer

i literally typed it up

**Answer:**

9

1600

**Step-by-step explanation:**

i know

**Answer:**

**Total weight = 70.5 kg**

**Step-by-step explanation:**

Rectangular frame is made from 5 straight pieces of metal. One of them goes through the diagonal of the rectangle.

2 pieces form the length of the rectangular frame, hence, they have a length of **12 m** each

2 pieces from the width of the rectangular frame, hence, they a length of **5 m** each

To find the length of the diagonal, we can use Pythagoras Theorem:

Hypotenuse² = Base² + Perpendicular²

Hypotenuse² = 5² + 12²

Hypotenuse² = 169²

Hypotenuse = 13

Hence, the length of the piece of metal placed at the diagonal is **13cm**

**Find the sum of all lengths of the metal pieces.**

Total length = 12 + 12 + 5 + 5 + 13

**Total length = 47 m**

Total weight = 1.5 × Total length

Total weight = 1.5 kg/m × 47m

**Total weight = 70.5 kg**

**Answer:**

**19 degrees.**

**Step-by-step explanation:**

Triangle of forces.

We can represent this sytem by a triangle with sides 27, 62 and 76 where the required angle is opposite the smallest side. Then we apply the Law of Cosines:

Cos x = (27^2 - 62^2 - 76^2) / (-2*62*76)

cos x = 0.94344

x = 19.36 degrees.

Well compared to the parent function x^2, the graph of y=-3x^2+3 is flipped upside down (negative sign), steeper, and is up 3 units from the origin.