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dezoksy [38]
3 years ago
9

The velocity of a skydiver t seconds after jumping is given by V(t)= 80(1-e^-.2t). After how many seconds is the velocity 120 ft

/sec?

Mathematics
1 answer:
Ad libitum [116K]3 years ago
6 0

Answer:

∞

Step-by-step explanation:

The equation describes a velocity curve that has an asymptote of 80 ft/s. The skydiver will <em>never</em> have a velocity of 120 ft/s.

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On a certain hot​ summer's day, 477 people used the public swimming pool. The daily prices are 1.50 for children and 2.25 for ad
Akimi4 [234]

Answer:

212 children, and 265 adults

Step-by-step explanation:

To find the number of children and adults, we can set up a systems of equations.

x= number of children

y= number of adults

Equation 1: Price

1.50x+2.25y=914.25

Equation 2: Total number of people

x+y=477

Now, let's solve the equation using substitution.

Rearrange the second equation to solve for one variable.

x+y=477

x=477-y

Now plug x equals into the first equation, and solve for y.

1.50x+2.25y=914.25

1.50(477-y)+2.25y=914.25

715.5-1.50y+2.25y=914.25

715.5+0.75y=914.25

0.75y=198.75

y=265

We just solved for the number of adults. Now let's plug y equals into the second equation to find the number of children.

x+y=477

x+265=477

x=212

7 0
2 years ago
Solve x 2 + 2x - 1 = 0
rjkz [21]

Answer:

x=-1/2

Step-by-step explanation:

hope this helps

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2 years ago
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What is the answer to this question<br> 2 1/2-d=1 3/4
goldenfox [79]

Answer:

d = 3/4

Step-by-step explanation:

2.5 - d = 1.75

-2.5        -2.5

------------------

-d = -0.75

d = 0.75

d = 3/4

4 0
2 years ago
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