Answer: 84
Step-by-step explanation:
When substituting this question into an algebraic equation you can write it as:
21=.25x
(x clearly represents the number you are trying to find)
When you divide both sides by .25 to isolate x you get x=84
Answer:The vertex in the graph is (-2,1) and It has a maximum value of 1 ,occurs at x=-2
Step-by-step explanation:
To find the vertex of a quadratic equation you gotta find the find middle point of the equation it could be lowest or his point in the quadratic equation
In this graph the vertex is the highest point in this graph (-2,1)
The quadratic equation is a maximum because the vertex is the highest point in the graph and if the vertex point was the lowest point it would been minimum.
David's score on his fifth test would be an 87. If you add up all the scores from his first to his fourth test, it would 363. However, since there are five tests, in order to get a 90 percent, the sum of all five test scores would be 450. 450 - 363 = 87.
Step-by-step explanation:
- 3x-12x=24-9x
- -9x=24-9x
- -9x+9x=24
- 0=24
It has no solution
