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Sidana [21]
3 years ago
9

The person swims at 4 kilometers per hour and runs at 20 kilometers per hour. For what distance x is the total time for swimming

and running 2 hours? Round to the nearest tenth of a kilometer. (Hint: Time swimming + time running = 2 hours, and distance rate = time.)
Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0

Answer:

Amm ask to your teacher not to this apps ok

Step-by-step explanation:

THANK you

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Step-by-step explanation:

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cluponka [151]
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3 years ago
If AD=6 and AB=24, find AC
ruslelena [56]
When a perpendicular is dropped from the right-angle (C) to the opposite side AB, the metric relations apply:
BD*BA=a^2 ..........................(1)
AD*AB=b^2...........................(2)
BD*DA=DC^2........................(3)

Given AD=6, AB=24, using metric relation (2) above, we have
b^2=6*24=144
=>
b=sqrt(144)=12

By the way, we conclude that this is a 30-60-90 triangle because b/AB=(1/2)=sin(B) => B=30 degrees.

Answer: b=12
6 0
3 years ago
How many lines of symmetry does a regular octagon have?
Lesechka [4]

Answer:

8

Step-by-step explanation:

  • An Equilateral Triangle (3 sides) has 3 Lines of Symmetry
  • A Regular Pentagon (5 sides) has 5 Lines of Symmetry
  • A Regular Hexagon (6 sides) has 6 Lines of Symmetry
  • A Regular Heptagon (7 sides) has 7 Lines of Symmetry
  • A Regular Octagon (8 sides) has 8 Lines of Symmetry
7 0
3 years ago
By which angle must AB turn about point A in the clockwise direction so that it coincides with AE ? A. 90° B. 180° C. 270° D. 36
dmitriy555 [2]

Answer:

B. 180°

Step-by-step explanation:

Rotate AB 180 degrees in the clockwise direction.

5 0
3 years ago
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