Answer:
169.4 square units.
Step-by-step explanation:
7*4 = 28
28*3 = 84
B*H/2 is the formula for an equilateral triangle.
7*6.1 = 42.7*2 = 85.4
84+85.4 = 169.4
The surface area of your equilateral triangular prism is 169.4 square units.
Answer:

Step-by-step explanation:
Since you placing a power to a power you must multiply both powers.
3 × 3 = 9
Therefore your answer is 
C because if you solve for the solutions for the quadratic, then you get 5 and -1 but you cant have negative seconds so 5 is the right answer!
Answer:
17.8
Step-by-step explanation:
First:
put the equation together
(2x+3) * (x+2)=91
Secondly:
condense
parenthisis can be dropped and normal problem solving can be used.
5x+2=91
subtract 2 from either side of the =
this will give you 5x=89
next divide 5 from each side because it is multiplying the x
x=17.8