Because -7i and 7i are the solutions to the quadratic equation, you can first write it in factored form (x-7i)(x+7i). The you multiply this out and get x^{2} +49.
Answer:
Step-by-step explanation:
A. Hours driving on monday= =23/4 hours (5 x 4 +3)
Hours driving on tuesday= =19/4 hours (4 x 4 +3)
Total hours = 23/4 + 19/4 = 42/4 = hours
B. Total hours driving = Hours driving on (Monday + tuesday + wednesday + thursday)
Hours driving on wednesday= =9/4 hours (2 x 4 +1)
Hours driving on thursday= =27/4 hours (6 x 4 +3)
Total hours driving = 23/4 + 19/4 + 9/4 +27/4 = 78/4 = hours
Answer: 0.142
Step-by-step explanation:
Answer:
The complete area of the given figure is
Step-by-step explanation:
Total number of rows = 2
Squares in each row = b
So, the total number of squares in 2 rows = 2 x ( Squares in 1 row ) = 2 x b
Also, side length of 1 square = b cm
As we know, AREA OF SQUARE = SIDE x SIDE
So here, area of 1 square = Side x side = b cm x b cm =
⇒ The area of total (2b) squares = 2 b x ( Area of 1 square)
Hence, the complete area of the given figure is