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MakcuM [25]
3 years ago
12

Find the distance between the two points rounding to the nearest tenth (if necessary).

Mathematics
1 answer:
kap26 [50]3 years ago
3 0

Answer:

4.5

Step-by-step explanation:

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A rock is thrown from the top of a tall building.The distance in feet between the rock and the ground t seconds after thrown is
marusya05 [52]

Answer:

0.448 seconds

Step-by-step explanation:

d = -16t² -4t + 412

find t when d = 407

substituting d = 407 into the equation:

407 = -16t² -4t + 412 (subtract 407 from both sides)

-16t² -4t + 412 - 407 = 0

-16t² -4t + 5 = 0 (multiply both sides by -1)

16t² + 4t - 5 = 0  

solving using your method of choice (i.e completing the square or using the quadratic equation), you will end up with

t = (-1/8) (1 + √21)= -0.70 seconds (not possible because time cannot be negative)

or

t = (-1/8) (1 -√21) = 0.448 seconds (answer)

4 0
3 years ago
A backpack costs $18 and has a 7 percent tax. How much will Sheila have to pay for the backpack after tax? $1.26 $12.60 $19.26 $
elixir [45]
If you add 18 to 7% your number comes out as 19.26
7 0
3 years ago
Read 2 more answers
A and B are two events.
Vesna [10]
In order to determine if the events are independent or not we need to find the conditional probabilities.

The conditional probability of event A, given event B is denoted as P(A|B)

P(A|B)= \frac{P(A*B)}{P(B)}

P(A*B) indicates P(A and B)

Using the values, we get:

P(A|B)= \frac{0.28}{0.8}=0.35

Since P(A|B) is not equal to P(A) this indicates that occurrence of event B has an impact on the occurrence of event A. This shows that the two events are dependent.

Therefore, the correct option is the second one.
2. A and B are not independent events because P(A∣∣B)≠P(A)
5 0
3 years ago
Read 2 more answers
I need the answer for part b​
Softa [21]

Answer:

4/4

Step-by-step explanation:

1/4 plus 1/4 plus 2/4 is 4/4

4 0
2 years ago
I need help please :)
bezimeni [28]

Answer:

[        10000(2)^{-n}       ]    where n is the number of hours.

Because the beginning will 10000/2 = 50000, then it keeps double the dividing the time.

6 0
2 years ago
Read 2 more answers
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