So basically, if it goes up then back down to the same level, the change is 0 since it is like, running 100 feet west, then running 100 feet east, you are at your original spot, your positino did not change
maggie is explaing what hunter is saying
Y=-5.11111 how I solved it is in the picture attached
Answer:
6.53 s
Step-by-step explanation:
The height of the cannon ball is represented by a quadratic function as:
h(t) = -4.9t² + 30.5t +9.8.
At 0 s (i.e. t = 0), h(0) = -4.9(0²) + 30.5(0) + 9.8 = 9.8
That means that the cannon ball is initially at a height of 9.8 m above the ground. To calculate the time it takes the ball to touch the ground, we use:
h(t) = -4.9t² + 30.5t +9.8
It touches the ground when h(t) = 0. Hence:
0 = -4.9t² + 30.5t + 9.8
Solving the above quadratic equation gives:
t = 6.53 s and t = -0.31 s
Since the time cannot be negative, hence t = 6.53 s. Therefore it takes the ball 6.53 s to hit the ground.
Answer: (a) 0.26 (26%)
(b) 0.45 (45%)
(c) 0.117 (11.7%)
Step-by-step explanation:
(a) P( woman asked for a raise ) = 0.26
This part is given in the question as 26% (The sample statistic). This is the proportion of women who asked for a raise.
(b) P(received raise given she asked)
This is a conditional probability question, as we are looking for the chance that a woman received a raise given she already asked for one.
P(received raise/asked for one) = P(received raise and asked for one) / P(asked for one)
= (0.26 x 0.45) / 0.26
= 0.45
(c) P(asked for raise and received one)
This is a Joint probability and it is found by multiplying the the probability that she received a raise given she asked for one by the probability that she asked for one. This can be deduced by rearranging the conditional probability formula in (b) above.
= P(received raise/ she asked for one ) x P(asked for one)
= 0.45 x 0.26
= 0.117
Answer:
WHAT
Step-by-step explanation:
