Answer:
The difference is 14.
Step-by-step explanation:
We are to subtract 3x² + 4x - 5 from 7x² + x + 9.
⇒ 7x² + x + 9 - (3x² + 4x - 5)
= 7x² + x + 9 - 3x² - 4x + 5
= (7 - 3)x² + (1 - 4)x + 9 + 5
= 4x² - 3x + 14
Now we subract 4x² - 3x from the above polynomial.
⇒ 4x² - 3x + 14 - (4x² - 3x)
= 4x² - 3x + 14 - 4x² + 3x
= (4 - 4)x² + (3 - 3)x + 14
= 14 which is the required difference.
2nd choice: The ball first bounced up to the height of 2 meters, and then falls 2 meters towards the ground
x = sqrt(105)
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
16^2 + x^2 = 19^2
256 + x^2 = 361
x^2 = 361 -256
x^2 =105
Take the square root of each side
sqrt(x^2) = sqrt(105)
9
Use PEMDAS (Parenthesis, exponent, multiplication, devision, addition, subtraction)
So....
7 + 2 .... Simplified ( 10/5 =2)
9 ..... Added
Hope this helps!
35+70=105, 180-105=75 so the answer is c 75°
D
Amortization is the systematic repayment or writing off a loan through a number of payments at a specific interest rate.
