Answer:
A = 5x³ + 17x² - 35x - 30
Step-by-step explanation:
the shaded area (A) is calculated as
A = outer area - inner area
= (5x + 3)(x² + 4x - 10) - 3x(2x - 1) ← distribute parenthesis
= 5x³ + 20x² - 50x + 3x² + 12x - 30 - (6x² - 3x)
= 5x³ + 23x² - 38x - 30 - 6x² + 3x ← collect like terms
= 5x³ + 17x² - 35x - 30
4n+15=70+n
I'm pretty sure this is the answer
Have a good day!
The answer must be
since the triangular pyramid has 4 faces and each has an area of 30
we should multiply that by 4 , so :
X = y + 5
-y + x - x = y - y + x + 5
-y = x + 5
y = x - 5
Answer:
B
Step-by-step explanation:
When you flip over the y-axis you the x is multiplied by -1
