2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
Answer:
Step-by-step explanation:
In how many ways can the club select its new officers
Need to fill 4 positions
24P4 = 24!/(24-4)! = 24!/20! = 21*22*23*24 = 255,024
The number that belongs in the blank space is answer choice A. 6
Wouldn't it be answer b)?
Answer:To find the volume of a composite solid, u identify the different parts it is made of, work out the volume of each part independently, and sum up the volumes of its parts. For composite prisms, where the bases are a composite shape, the area of the bases is the sum of the areas of the parts it is made of.
