Answer:
Elements of AxBb and BxA have been listed in the attached file
Step-by-step explanation:
The concept applied is that of binary operation and generally using the rule of combining more than one operations sign in either communitative or associative property as shown in the attachment.
Answer:
Step-by-step explanation:
Let Naomi's wage = £ x
Reduction in wage = 10% of x = 0.1 *x = 0.1x
x - 0.1x = 252
0.9x = 252
x = 252/0.9

= £ 280
Weekly wage if she had received 10% pay increase
Increment = 10% of 280 = 0.1*280 = 28
Weekly wage after increment = 280 +28 = £ 308
Answer:
y = (x + 4.5)² - 13.25
Step-by-step explanation:
y = x² + 9x + 7
We need to get a perfectly squared binomial as part of the right side.
Take the '9x' term, divide it in half, square it, add <u>and also subtract it </u>on the right side, as shown below. That would be (4.5)² = 20.25 added <u>and </u>subtracted.
y = x² + 9x + 7
y = x² + 9x + 20.25 + 7 - 20.25
y = (x² + 9x + 20.25) - 13.25
y = (x + 4.5)² - 13.25
y = (x + 4.5)² - 13.25
Vertex Form is y = a(x-h)² + k, where the parabola vertex is (h, k)
So if you wrote this as y = 1(x - [-4.5] )² + (-13.25), we would see that a = 1, and h = -4.5 and k = -13.25.
Vertex = (-4.5, -13.25)
I verified on a graphing calculator that this is indeed the vertex of the parabola.
Answer:
V≈381.7ft³
Step-by-step explanation:
try using a sphere calculator next time its a lot easier and saves time