The ratio of boys to girls at a movie is 4:7. If there are 21. girls, how many boys are
1 answer:
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The square of a binomial expands as follows:
Expanding all the binomials, we have
Sum like terms:
Simplify terms appearing on both sides:
Move all terms involving k to the left and all numbers to the right:
Divide both sides by -20:
Answer:
a.
b.
Step-by-step explanation:
a.
Where,
Where,
Volume of the shaded figure =
b. expressed in factored form:
Look for the term that is common to 9a³ and 9ab², then take outside the parenthesis.