The height of a tennis ball tossed into the air is modeled by h(x) = 40x – 16x 2, where x is elapsed time in seconds. During what time interval will the tennis ball be at least 15 feet above the ground?

x > 0.5 seconds and x > 2.04 seconds
x > 0.5 seconds and x ≤ 2.04 seconds
x ≥ 0.5 seconds and x > 2.04 seconds
x ≥ 0.5 seconds and x ≤ 2.04 seconds

pretty sure its D

Step-by-step explanation:

it says at least 15, meaning that the value can also 15 and the only one with two equal values is D so logic

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

hiking down a winding trail.

step-by-step explanation: