Answer:
x² + 6x - 5x – 30=(x-5)(x+6)
Step-by-step explanation:
x² + 6x - 5x – 30=x²+x-30
delta=1-4(-30)=1+120=121=11²
Sqrt(delta)=11
The roots are:
x1,2=(-1 +- 11)/2
Thus we get
x1=(-1+11)/2=10/2=5
x2=(-1-11)/2=-12/2=-6
Finally:
x² + 6x - 5x – 30=(x-5)(x+6)
Answer
396 miles and $28.71
Answer:
5 feet
Step-by-step explanation:
Since you know that the ratio is 1:250, you set up a second ratio that looks like this:
x:1,250, where x is the unknown height of the model.
Then divide 1,250 by 250 bc the real building is 250 times larger than the model. 1,250/250=5, so the model should be 5 feet tall
Answer:
c. 148° is the correct answer on ed 2020
Step-by-step explanation:
I took the quiz and got it correct.