Answer:
On online classes the answer is: NO, THE FUNCTION HAS NO REAL NUMBER ZEROS
Step-by-step explanation:
its D on online work
Answer:
Step-by-step explanation:
Because of the nature of the information we are given, we have no choice but to use the equation
and solve for a.
We know by the info that the vertex is (0, 84). We also know that if the vertex is at the origin, and that the base is 42 feet wide, it spans 21 feet to the right of the origin and 21 feet to the left of the origin. That means that we have 2 coordinates from which we need to pick one for our x and y in the equation. I don't like negatives, so I am going to choose the coordinate (21, 0) as x and y. Because this parabola opens upside down, as archways of door openings do, our "a" value better come out algebraically as a negative. Let's see...From the vertex we have that h = 0 and k = 84. So filling in:
and simplifying a bit:
0 = 441a + 84 and
-84 = 441a so
Good, a is negative. Your equation is, then:
Answer:
1. Show the formula to determine the area of a rectangle.
area = length x width
2. Rearrange the formula to find the unknown length of Nick's pool
length = area / width
3. Calculate the length of Nick's pool.
length = 384 / 16 = 24 feet
4. If Nick had to buy a cover that was too long (30 foot), how much extra area would be left over after the pool is covered?
(30 - 24) * 16 = 6 * 16 = 96 square feet
Answer:
$2200
Step-by-step explanation:
200×10=2000
2000+(2000÷10)=2200