Since it is in between 3.1 and 3.2, and you are saying that it has 2 decimal places, then it could be the following numbers (choose any 2 of these you want): 3.11; 3.12; 3.13; 3.14; 3.15; 3.16; 3.17; 3.18; 3.19.
Answer:
a= 20
b= 169.7
c= 29.71
Step-by-step explanation:
The formula of a triangle is (h*b)/2
a= (5*8)/2
b= to find the height, you can use the pythagorean theorem 18^2 - 6^2 = square root of 288. Which is 12root 2 or 16.97. (16.97*20)/2
c= using the pythagorean theorem- 11^2 = 7^2 - c^2 = square root 73, or 6root 2, or 8.49. (8.49* 7)/2
Answer:
(−81)(−9) = 729
Step-by-step explanation:
Multiply -81 by -9 and you get 729
Answer:
Octagon regular.
Step-by-step explanation:
This shape has 8 sides to it is an octagon. A octagon irregular doesn't have equal sides while this one does. The best way to tell is if it looks like a stop sign which are octagon regular.
Answer:
d=1
Step-by-step explanation:
- -d-3=8+d-10-3d
- simplify 8+d-10 -3d
- -d-3=-2d-2
- d-3=-2
- d=1
