A highway is 45km in length.2/3 of the highway is paved.how many km of the highway is paved?

Set up equations:

(1) speedbus = speedbike+4

(2) speedbus/speedbike = 180/156

plug (2) into (1)

speedbike * 180/156  = speedbike + 4  

(solve for speedbike)

speedbike = 4 / (180/156-1) = 26 mph

--> speedbus = 26+4 = 30mph

Answer: No solutions

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Work Shown:

3x-6y = 10

3(2y)-6y = 10 ... plug in x = 2y

6y-6y = 10

0 = 10

We get a false statement at the end.

This means the system is inconsistent with no solutions.

Graphing each equation produces two parallel lines that never intersect.

To convert temperatures in degrees Fahrenheit to Celsius, subtract 32 and multiply by .5556 (or 5/9).

5F= -15C

39F= 3.9C

Here's how you can convert Fahrenheit to Celsius:

1. First, we need to subtract 32 from the Fahrenheit temperature.

For 5F, we would do 5 - 32 to get -27.
For 39F, we would do 39 - 32 to get 7.

2. The next step in our conversion process is to multiply the result by 5/9.

For -27, we would do (-27 * 5/9) to get -15.
For 7, we would do (7 * 5/9) to get approximately 3.888888888889, but we want our result rounded to the nearest tenth of a degree. Thus, we round this value to 3.9.

So, to convert 5F to Celsius you get -15C and to convert 39F to Celsius you get 3.9C.

Answer:

None

Step-by-step explanation:

All angles must add up to 180 in a triangle. 60+60+40=160. therefore, no triangles can be made with these angles.