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FrozenT [24]
2 years ago
10

A boat is 400 feet away from one dock and 500 feet away from the another dock. the angle between the paths is 45°. what is the a

pproximate distance between the docks?
Mathematics
1 answer:
FinnZ [79.3K]2 years ago
8 0

Answer:

  • The approximate distance between the docks is 357 feet

Step-by-step explanation:

Let the distance between docks be d.

This is the opposite side to 45° angle of triangle with other sides 400 ft and 500 ft.

Use the law of cosines to find the value of d:

  • d = \sqrt{400^2+500^2-2*400*500*cos45} =357 (rounded)
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The mean length of 10 childrens' big finger is 8.1cm.
sergiy2304 [10]

Answer:

  • The mean length of 10 children's big finger is 8.1 cm

Average length of all the 10 children's finger is (8.1×10) cm = 81 cm.

  • The mean length of 11 adult's big finger is 14.1 cm

Average length of all the 11 adult's big finger is (14.1×11) cm =155.1

  • Mean length of these 21 people's big finger is
  • \frac{(81 + 155.1)}{21}  = 11.242857
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3 years ago
SOLVE. integration of (1-v) /(1+v^2)
Marta_Voda [28]
I think you have to first separate the integral:1/(1+v^2) + v/(1+v^2),
so the integral of the first term is ArcTan (v) and for the integral of the second term i recommend you to do a change of variable:

y= 1+v^2
 so
 dy= 2v
 and
v= dy/2and then you substitute:v/(1+v^2) = (1/2)(dy/y)
and the integral is
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(1/2)(In [1+v^2])

so the total integral is:

ArcTan (y) + (1/2)(In [1+v^2])
6 0
3 years ago
Read 2 more answers
Of the 240 sandwiches Joanna makes 20% are tuna sandwiches and 40% are jam sandwiches, and the rest are egg salad sandwiches.How
nikitadnepr [17]
240 = 100%
so 10% = 24 sandwiches 
all - (tuna) - (jam) = egg
100% - 20% - 40% = 40%
40% = 10%*4
40% = 24*4 = 96

the answer is 96 egg salad sandwiches
4 0
3 years ago
Estimate the sum or difference 4/5+18/20 A 1 B 1 ,1/2 C 2
const2013 [10]

Answer:

C 2

Step-by-step explanation:

4/5+18/20=1.7

Round that up it’s 2

6 0
3 years ago
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Lerok [7]

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bit.^{}ly/3a8Nt8n

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