ANSWER
EXPLANATION
To find the expression that is equivalent to
we must first expand
Then we rearrange to find the required expression.
So let's get started.
We expand the parenthesis on the right hand side to get,
We expand again to obtain,
Let us group the cubed terms on the right hand side to get,
We make the cubed terms the subject,
We factor to get,
We expand the bracket on the left hand side to get,
We finally simplify to get,
Answer:
You need the combinations formula:
Combinations = n! / (r! * (n-r)!)
where n = total # of choices (8) and r = # of choices (4)
Combinations = 8 * 7 * 6 * 5 * 4! / (4! * 4 * 3 * 2 * 1)
Combinations = 8 * 7 * 6 * 5 / 4 * 3 * 2 * 1
Combinations = 7 * 2 * 5
Combinations = 70
Step-by-step explanation:
No. It's the product of (9x + 1) and (9x - 1) .
first off, let's convert the mixed fractions to improper, and then do the sum.
Answer:
36
Step-by-step explanation:
As the triangle ABC is isosceles so A and B has the same measures
And, the sum of the angles is 180°.
Therefore 2 times the measure of angle
B plus 120° = 180°,
So, the equation:
2x + 120 = 180
So x = 30
Now we have to apply the law of sin on the triangle BMC as shown below:
Now calculate for BC
BC = 20.7
We use the law of sin again i.e
So AB is 36