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3 years ago

Solve these equations)

Mathematics

2 answers:

tatuchka [14]3 years ago

8 0

Answer:

1. c=-2

2. 0=12 no solution

3. x=4

4. r=3/2

Step-by-step explanation:

Svetlanka [38]3 years ago

8 0

Answer:

1) 9c-3c= -8-4

6c=-12

c=-12/6

c=-2

2) 3×5x-3×2-6x=3×3x+3×2

15x-6-6x=9x+6

15x-6x-8x=6-6

15x-14x=0

x=0

3)-x+7x=24

6x=24

x=24/6

x=4

4) -2r-1/2×-2=-2

-2r+1=-2

-2r=-2-1

-2r=-3

r=-3/-2

r=3/2

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Step-by-step explanation:

Faces: 20 Edges: 30

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Step-by-step explanation:

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The bearing from the Pine Knob fire tower to the Colt Station fire tower is N 65° E, and the two towers are 31 kilometers apart.

suter [353]

The distance are

a. 42.42

b. 15. 52

<h3>How to solve for the distance</h3>

80 = 65 + <ABC

<ABC = 80 - 65

= 15

Through the use of sine rule we would have

By using sine rule,

Sine 15/a = sine 135/b =

sin 30/30.

Next we have to solve b by cross multiplying

b = (30× sin135) / sin 30

= 21.21/0.5

b = 42.42 km

Also, the value of a will be:

= (42.42 × sin 15) / sin 135

= 10.98/0.7071

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