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Aneli [31]
2 years ago
15

In science class, the students were asked to create a container to hold an egg. They would drop this container from a window tha

t is 25 feet above the ground. If the equation of the container's pathway can be modelded the equation h=-16t^2+25 , how long will it take the container to reach the ground?
Mathematics
1 answer:
Rama09 [41]2 years ago
6 0

Answer:

7.8 seconds

Step-by-step explanation:

You might be interested in
1. The table shows the probabilities of a response chocolate or vanilla when asking a child or adult. Use the formula for condit
Stels [109]
\begin{matrix}&\text{chocolate}&\text{vanilla}&\text{total}\\\text{children}&0.14&0.26&0.40\\\text{adults}&0.21&0.39&0.60\\\text{total}&0.35&0.65&1.00\end{matrix}

a. "Chocolate" and "Adults" (whatever those mean) will be independent as long as

P(\text{chocolate}\cap\text{adults})=P(\text{chocolate})\cdot P(\text{adults})

"Chocolate" has the marginal distribution given by the second column, with a total probability of P(\text{chocolate})=0.35. Similarly, "Adults" has the marginal distribution described by the third row, so that P(\text{adults})=0.60. Then

P(\text{chocolate})\cdot P(\text{adults})=0.35\cdot0.60=0.21

Meanwhile, the joint probability of "Chocolate" and "Adults" is given by the cell in the corresponding row/column, with P(\text{chocolate}\cap\text{adults})=0.21.

The probabilities match, so these events are indeed independent.

Parts (b) and (c) are checked similarly.

b. Yes;


P(\text{children})\cdot P(\text{chocolate})=0.40\cdot0.35=0.14
P(\text{children}\cap\text{chocolate})=0.14

c. Yes;

P(\text{vanilla})\cdot P(\text{children})=0.65\cdot0.40=0.26
P(\text{vanilla}\cap\text{children})=0.26
5 0
3 years ago
I got 13.7 is that correct
Ghella [55]

Answer:

The answer to your question is 10.5 in

Step-by-step explanation:

Data

First triangle

height = x

base = 7 in

Second triangle

height = 12 in

base = 8 in

Process

1.- Use proportions to solve this problem, relates the sides of a triangle with the same sides of the other triangle.

                                   \frac{x}{7} = \frac{12}{8}

2.- Multiply both sides by 7

                                7\frac{x}{7} = \frac{7(12)}{8}

3.- Simplify

                                 x = \frac{84}{8}

4.- Result

                                x = 10.5 in

3 0
2 years ago
Can anybody please help me with this math problem?
insens350 [35]

Answer:

  B.  (15, 19)

Step-by-step explanation:

To check to see if a particular ordered pair is a solution to an equation, use the values for the variables and see if the equation is true.

A. 4/5(0) +7 = 7 ≠ 1

B. 4/5(15) +7 = 19 . . . . . . is a solution

C. 4/5(-5) +7 = 3 ≠ 11

D. 4/5(-2) +7 = 27/5 ≠ 1

__

A calculator can help with this.

4 0
2 years ago
Look at the graph!! and how do i describe the graph of g(x) as a transformation of f(x)
melamori03 [73]
Idk but you can prolly search that shi up
5 0
2 years ago
The new number, 550 is 200 more than the orginal number. What is the approximate percent change?
Arturiano [62]

Answer:

I think D

Step-by-step explanation:

Correct me if I'm wrong

3 0
2 years ago
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