Answer:
y=1 for
Step-by-step explanation:
We can solve an inequality much like we solve an equation. We will use inverse operations to isolate y. If we need to divide by a negative then we will need to flip the inequality.
First, we moved 9 across the equal sign to combine it with 11 by subtracting by 9 from both sides.
Second, we divided both sides by 2.
is the solution. All solutions equal to 1 and less than 1 will work.
The area of the base is given by:
A1 = (1/2) * (15) * (13)
A1 = 97.5
The area of the lateral faces is given by:
A2 = (1/2) * (15) * (10)
A2 = 75
Then, the total surface area is:
A = A1 + 3A2
Substituting values:
A = 97.5 + 3 * (75)
A = 322.5
Answer:
The surface area of the equilateral triangular pyramid is:
C) 322.5 in2
A. {9,10,11,12}
9 and 10 are elements of set A but 11 and 12 aren't elements of A.
Subsets of A
{ } {1} {2} {3} {4} {5} {6} {7 } {8} { 9} {10}
{1,2} {1,3} {1,4} {1,5} {1,6} {1,7} {1,8} {1,9} {1,10} {1,2,3} {1,2,4} {1,2,5}........ you can write like this using all the elements of A
This one would be b for you to have the right amswer