The first choice is correct. 1 times 8 is 8, and 1+8 is 9
Answer:
x^2 14x + 49
Step-by-step explanation:
Use F.O.I.L method
FIRST: x * x = x^2
OUTSIDE: 7*x
INSIDE: 7*x
LAST: 7*7= 49
x^2 + 7x + 7x + 49
x^2 14x + 49
The answer would be 29* because the two measurements should be equal to 180*. So the value of one angle plus the value of the other angle equal 180. You gather all like values in the equation, then leave the x by it self by dividing. After you have the final x value, you substitute x to the initial values to give the final angle results.
Answer:
N = H / 12
H: must be in feet
Step-by-step explanation:
Declaring variables:
- Height of each floor L = 12 ft
- Total height of the building is H
- Number of floors in the building N
Developing an expression:
- The number of floors in a building can be determined by the following expression:
N = H / L
N = H / 12
N = 0.08333*H
- it is to be noted that the units of H must also be in ft.
