Answer:
A. 9A² - 16B²
Step-by-step explanation:
(3A + 4B)(3A - 4B)
Distribute:
3A(3A - 4B)
4B(3A - 4B)
Multiply:
3A(3A - 4B)
3A(3A) + 3A(-4B)
9A² - 12AB
4B(3A - 4B)
4B(3A) + 4B(-4B)
12AB - 16B²
Combine like terms:
9A² - 12AB + 12AB - 16B² <== -12AB + 12AB cancels out
9A² - 16B²
Therefore, our final answer is 9A² - 16B²
Hope this helps!
( - 1, - 8 )
since both equations give y in terms of x we can equate them
3x - 5 = 2x - 6
subtract 2x from both sides of the equation
3x - 2x - 5 = - 6
x - 5 = - 6
add 5 to both sides
x = - 6 + 5 = - 1
substitute x = - 1 into either of the 2 equations for y
y = (3 × - 1) - 5 = - 3 - 5 = - 8
solution to the system is (- 1, - 8 )
We must use a certain formula to find the circumference. The formula for circumference of a circle is:
C = 2 * pi × r
Substitute:
C = 3.14 × 6.1 × 2
C = 38.303
Round to the nearest tenth:
38.3.
ANSWER:
The circumference of the circle is about 38.3 centimetres.
Answer:
m = 2.
Step-by-step explanation:
In increasing order the perfect cubes are 1, 8, 27.
So m = 2.
Answer:
Step-by-step explanation:
transaction 3: 143
transaction 4: -86
transaction 5: 86!
