rectangle 1: 6 units by 1 unit
rectangle 2: 5 units by 2 units
rectangle 3: 4 units by 3 units
(6 mph)x + (10 mph)x = 48 mi. Then (16 mph)x = 48 mi, and x = 3 hrs (answer)
I’m assuming what you’re asking here is how to *factor* this expression. For that, let’s rearrange the expression into a more familiar form:
-c^2-4c+21
From here, we’ll factor out a -1 so that we have:
-(c^2+4c-21)
Let’s focus on the quadratic expression inside the parentheses. To find our factors (c + x)(c + y), we’ll need to find two terms x and y that multiply together to make -21 and add together to make 4. It turns out that the numbers -3 and 7 work out perfectly for that purpose (-3 x 7 = -21 and 7 + (-3) = 4), so substituting them in for x and y, we have:
(c + (-3))(c + 7)
(c - 3)(c + 7)
And adding back on the negative from a few steps earlier:
-(c - 3)(c + 7)
Answer:
1-(n+6) (n+6)-1
Step-by-step
i just got it right on study island
18 1/4 divided by 30 equals 0.608333333
Each person would receive 0.6 pounds of crab.
