Answer:
1. 20 cm^2
2. 40 cm^2
3. 14 cm^2
4 49 cm^2
Step-by-step explanation:
Area of triangle= 1/2(base)*(height)
Area of rectangle= (base)*(height)
1. 1/2(10)(4)=20
2. (8)(5)=40
3.1/2(4)(7)=14
4. (7)(7)=49
Answer:
The first pyramid:
63x
39x 24x
23x 16x 8x
The second pyramid:
162x
82x 80x
4x 78x 2x
The third pyramid:
12a+2b
9a+b 3a+b
9a b 3a
The fourth pyramid:
-19a
-5a -14a
3a -8a -6a
Step-by-step explanation:
All that an alegbra pyramid is is adding the two terms below it.
So you can see how I added the terms that lied below each number, such as in number 1: I added 23x and 16x to get me 39x, and I added 16x and 8x to get me 24.
Hope this helped!
I think true...i might be wrong
Answer:
6 cm
Step-by-step explanation:
Let k represent the scale factor between ΔABC and ΔDCA. Then ...
... CA = k·BC
... AD = k·CA
So, AD/BC = k·(k·BC)/BC = k² = 9/4
Then k = √(9/4) = 3/2, and ...
... CA = (3/2)·BC = (3/2)·(4 cm)
... CA = 6 cm
Answer:
b 15/4
Step-by-step explanation:
