Answer:
23
Step-by-step explanation:
If you are asking how old Sara is then....
the equation would be: S= (13×2)-3
(S is stands for Sara)
We are using 13 because Owen is 13 yrs old. We used 2 because it said twice. We are using three cause it said three less than. 13×2=26. 26-3 would be 23.
Your answer for the first inequality is D) s less than or equal to -2
2nd inequality: I got the answer s<55/8.
Answer:
42km/h
Step-by-step explanation:
70km=100 minutes
7km= 10min
42km=60min
42km/h
The nature of the roots can be determined by the determinant of the equation. The determinant is:
b² - 4ac
If this is positive, there are two roots
If this is 0, there is only one root
If this is negative, there are complex roots
