Answer:
Area = 20 ft^2
Step-by-step explanation:
Triangle area is (1/2) Base x Height
Area = (1/2)(5)(8)
Area = 20 ft^2
Width of a watch can be measured in cms or inches, since it's too small. Distance to the moon is measured in light years, since it is too large. Length of your finger is measures in cms or inches, since it is too small. The length if a roller skating ring is rightly measured in yards, since it is just the right size. It can also be measured in feet.
Answer:
See below
Step-by-step explanation:
Tariku in second grade read 6 books each month during the year. This is equal to 6(12) = 72.
Tariku in third grade read 8 books each month during the year. This is equal to 8(12) = 96.
You can find the total amount with any of the below equations:
- 6(12) + 8(12)
- 12(6+8)
- 12(14)
For a total number of months x the equations would be the same except with x instead of 12.
The first equation is 
(Equation 1)
The second equation is 
(Equation 2)
Putting the value of x from equation 1 in equation 2.
we get,
by simplifying the given equation,
Using discriminant formula,
Now the formula for solution 'x' of quadratic equation is given by:
Hence, these are the required solutions.
Answer:
Yes
Step-by-step explanation:
(x-1)(x+1)(x-3i)(x+3i)
FOIL ( x-1) (x+1) = x^2 -x+x-1 = x^2 -1
FOIL (x-3i)(x+3i) = x^2 +3ix -3ix -9i^2 = x^2 -9(-1) = x^2 +9
(x-1)(x+1)(x-3i)(x+3i) = (x^2 -1) (x^2 +9)
FOIL again
x^4 +9x^2 -x^2 -9
x^2 +8x^2 -9
This is the factored form
