Answer: Second option.
Step-by-step explanation:
1. To solve this problem you can applly the quadratic formula, which is shown below:
2. The quadratic equation is:
3. Then:
a=1
b=-10
c=-10
4. Therefore, when you substitute these values into the quadratic formula, you obtain the following result:
x=5±√35
Answer:
A
Step-by-step explanation:
Note the expansion
tan(a - b) = 
We are given the right side of the expansion , then left side is
tan(
- 
)
= tan(
)
= tan (
) → A
Answer:
Step-by-step explanation:
In math, a term is a combination of coefficients, constants and /or variables, each combination being separated by either a + sign or a - sign.
<span>
<span>Speed
is calculated as distance covered, divided by the time taken to cover that
distance. In this case, the sales person covered 50KM in 45minutes (which can
also be expressed as 3/4 hours). To calculate the speed he used to cover this
distance, we divide the distance covered by the time taken. So 50km/3/4hours.
This gives us 66.67km/hr. In order to calculate the amount of time the
salesperson used to travel from the office to the sales person, we calculate
as follows 250km/66.67km/hr. This gives us a total of 3.75 hours or 3 hours 45 minutes.</span></span>
