Answer:
a) She did mistake in Step 2
b) when she take -3y common then the term should be: -3y(x+5) instead she wrote -3y(x-5)
Step-by-step explanation:
We need to find problem in Ms J solution.
Ms J solution:
![Step \ 1: 4x^2 + 20x - 3xy - 15y\\Step \ 2: 4x(x + 5) - 3y(x - 5)\\Step \ 3: (x+5)(4x - 3y)](https://tex.z-dn.net/?f=Step%20%5C%201%3A%204x%5E2%20%2B%2020x%20-%203xy%20-%2015y%5C%5CStep%20%5C%202%3A%204x%28x%20%2B%205%29%20-%203y%28x%20-%205%29%5C%5CStep%20%5C%203%3A%20%28x%2B5%29%284x%20-%203y%29)
She did mistake in Step 2 when she take -3y common then the term should be: -3y(x+5) instead she wrote -3y(x-5)
Correcting the mistake:
![Step \ 1: 4x^2 + 20x - 3xy - 15y\\Step \ 2: 4x(x + 5)\mathbf{- 3y(x +5)}\\Step \ 3: (x+5)(4x - 3y)](https://tex.z-dn.net/?f=Step%20%5C%201%3A%204x%5E2%20%2B%2020x%20-%203xy%20-%2015y%5C%5CStep%20%5C%202%3A%204x%28x%20%2B%205%29%5Cmathbf%7B-%203y%28x%20%2B5%29%7D%5C%5CStep%20%5C%203%3A%20%28x%2B5%29%284x%20-%203y%29)
I'm pretty sure that the answer is A., because if you turn the fraction into a decimal and multiply it by 24, you get 7.999992, which estimates to be 8.
Answer:
The order doesn’t matter, as the two events are probabilistically independent of one another. There are 13 spades in a standard 52 card deck, so the probability of drawing the number 5 is 13/52 or 1/4. The probability of heads is 1/2. The probability of both occurring is the product of the two probabilities, or 1/4*1/2 = 1/8 or 12.5%.
Answer:
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Answer:
36 degrees
Step-by-step explanation:
since, m<AOB is a right angle, we shall just create an equation:
M<AOB+M<BOC=90 degrees
Substitute: 6z-12+3z+30=90
Solve: 6z+3x=9z
-12+30=18
so, 9z+18=90 degrees
-18 -18
9z=72
z=8
So if z=8, then we should fit it so that it matches measure of AOB.
6z-12
6 times 8=48
48-12= 36