Interval notation
(-infinity sign, 1)
Set-builder notation
{x|x less than equal to 1}
Answer:
225/4
Step-by-step explanation:
x²– 15x – 23 = 0
To complete the square
We take to coefficient of the x term
-15
divide by 2
-15/2
Square it
225/4
Add it to each term
Answer:
59.9 mph or rounded to the nearest tenth (60 mph)
Step-by-step explanation:
Speed=Distance÷time
Distance-1798
Time-30
Speed-?
1798÷30=59.9mph or 60mph
The answer is 2.
This is because the line crosses the x axis in 2 different places.
Hope this helps!
What happens to the number after the subtraction sign in each problem
