Answer:
y - 1 = -1 ( x-2)
Step-by-step explanation:
first find the slope which = -1 and then plug in the first point into equation
Step-by-step explanation:
the perimeter = 17+19+21+33+27=117 cm
Answer:
2.5 m/s
Step-by-step explanation:
Matty's speed = 9 km/hr
We need to convert 9 km/hr to m/s
We know that,
1 km = 1000 m
1 hour = 3600 seconds
So, Matty jogs with the speed of 2.5 m/s.
Answer:
- total area is the total of the areas of each of the rectangular surfaces
- 67 units²
Step-by-step explanation:
Add up the surface areas of each of the 6 faces.
There are two top/bottom faces with the same area, two left/right faces with the same area, and two front/back faces with the same area. So you only need to figure the areas for 3 faces, then multiply that sum by 2. Of course the area of each rectangle is the product of its length and width. For length, width, and height dimensions L, W, and H, the total area is ...
A = 2(LW +WH +LH)
= 2(LW +H(L+W)) . . . . . I like this form because there's one less multiplication
= 2(5·4 + 1.5(5+4)) = 2(20 +13.5)
A = 67 . . . units²
_____
<em>Comment on dimensions</em>
It does not matter which number you use for length, width, or height. The problem is symmetrical that way, so any of the dimensions can be called any of those things. You need to use the same number consistently for height (for example) once you have made the choice of which is which.
your picture is not showing up for me
