Answer: 
Step-by-step explanation:
Given the following expression:

You need to substitute the given values of "a" and "b" into the expression. Notice that these values are:

Then;

Now you must solve the multiplications:

The final step is to add the numbers. Therefore, you get the following answer:

Answer:
1/5 hour or 12 minutes
Step-by-step explanation:
We can use proportions to solve this problem. Put the distance over the time
5 km 1 km
----------- = ---------
1 hour x hours
Using cross products
5x = 1
Divide by 5
x = 1/5 hour
or if we take it to minutes
1/5 * 60 = 12 minutes
A triangle is a three-edged polygon with three vertices. The correct option is C.
<h3>What is a triangle?</h3>
A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.
The sides of the triangle PQR are PQ, QR, and PR. Thus, the correct option is C.
Learn more about Triangle:
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Answer:
x=3
Step-by-step explanation:
Step 1: you have to replace y with x-6 to make it all one equation (as seen in the picture below)
Step 2: write it all together so: x-6= -2x+3
Step 3: add 2x on both sides to cancel out the negative so: x+ 2x and -2x+2x
Step 4: add 6 on both sides to cancel out the negative so: -6+ 6 and 3+6
Step 5: divide 3 by 3x and 9 to get x