Since you only need two points to determine the slope, we use the first two, (0,15) and (2,9). The slope formula is (y2-y1)/(x2-x1), so (9-15)/(2-0)=(-6/2)=<em>-3</em>

4 0

3 years ago

Find the surface area of a regualar pyramid that is a pentagonal pyramid with the area of a base is is 440.4mm and a height of 2

Inessa [10]

Answer:

1240.4 mm²

Step-by-step explanation:

The surface area of a pyramid = Area of the all sides + Area of base

Each side is a triangle.

With a regular pentagonal pyramid, the area of each triangle is

$A = \frac{1}{2}\times\text{base}\times\text{slant height}$

For the 5 triangles,

$A = 5\times\frac{1}{2}\times\text{base}\times\text{slant height} = \frac{1}{2}\times5\times\text{base}\times\text{slant height}$

Substituting given values,

$A = 5\times\frac{1}{2}\times16\ \text{mm}\times20\ \text{mm} = 800 \text{mm}^2$

Area of base = 440.4 mm²

Surface area of a pyramid = 800 + 440.4 mm² = 1240.4 mm²

6 0

3 years ago

Please help me with this question<br>BRAINLIEST AVAILABLE

soldier1979 [14.2K]

The rate of change would be the amount of earnings increase for each additional hour the ensemble plays if x stands for hours

The y intercept is the flat fee for party reservations since this would be when x is zero and the y value is unaffected by x.

3 0

3 years ago