Answer:
step 2; a negative times a negative = a positive.
Step-by-step explanation:
-4(6-b)=4
<u>-24 </u><u>+</u><u>4b=4</u>
4b=28
b=7
2^-2 = 1/2^2
so: (1/2^2)*(12*3)-5^3
simplify: (1/4)*36-125
36*(1/4) = 36/4 so: 9-125
subtract: -116
Answer:
A: The plane is going 525 miles per hour.
B: In 13 hours the plane will travel 6,825 miles.
Step-by-step explanation:
Hope this helped you :)
Answer: (3x + 11y)^2
Demonstration:
The polynomial is a perfect square trinomial, because:
1) √ [9x^2] = 3x
2) √121y^2] = 11y
3) 66xy = 2 *(3x)(11y)
Then it is factored as a square binomial, being the factored expression:
[ 3x + 11y]^2
Now you can verify working backwar, i.e expanding the parenthesis.
Remember that the expansion of a square binomial is:
- square of the first term => (3x)^2 = 9x^2
- double product of first term times second term =>2 (3x)(11y) = 66xy
- square of the second term => (11y)^2 = 121y^2
=> [3x + 11y]^2 = 9x^2 + 66xy + 121y^2, which is the original polynomial.
The property of 53*6=6*53 is commutative property
