Length of circular track is:
L = 2*r*pi
He run 3/4 of it so length is:
L' = 3*2/4*r*pi = 3/2*r*pi
To calculate speed of his movement we use formula:
v = s/t where s = L' and t = 1 minute 45 seconds = 105 seconds
v = L'/t =
v = r* pi/70
If we take that r = 1 answer is
<em>Hey</em><em>!</em><em>!</em>
<em>Here's</em><em> </em><em>your</em><em> </em><em>answer</em><em>:</em>
<em>prime</em><em> </em><em>numbers</em><em> </em><em>which</em><em> </em><em>are</em><em> </em><em>factors</em><em> </em><em>of</em><em> </em><em>3</em><em>0</em><em> </em><em>are</em><em>:</em>
<em>1</em><em>,</em><em>2</em><em>,</em><em>3</em><em> </em><em>and</em><em> </em><em>5</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em>
When we say "solve for the variable", we mean to solve the equation because the solution of the equation is finding the unknown variable.
So, the similarity between "solving for a "variable" to "solving an equation" is that both actions imply looking at the value of that variable.
<h2>Similarity:
both actions imply looking at the value of that variable.</h2>
On the other hand, a slight difference would be in the case of having several variables in the equation. In this case, both actions could represent slight differences, because if we have three different variables and we say "solve for <em>y</em>", that means we must isolate that variable, and the result is just an expression. But, if we say "solve the equation"
(4,-5) let me know if im wrong if im right plzeee give me brainliestt
Answer: speed of the car is 88 miles per hour
the speed of the motorcycle is 78 miles per hour
Step-by-step explanation:
Number of miles travelled by car = 312
Number of miles travelled by motorcycle = 272
Let x = speed of the car
Let y = speed of the motorcycle
If the car's speed is 10mph more than the motorcycle's, it means
x = y + 10 - - -- - - 1
Time taken for car to travel 312 miles is distance /speed = 312/x
Time taken for motorcycle to travel 272 miles is distance /speed = 272/y
The car travels 312 miles in the same time that a motorcycle traveled 272.
This means
312/x = 272/y
312y = 272x
y = 272x/312
Substituting y = 272x/312 into equation 1, it becomes
x = 272x/312 + 10
312x = 272x + 3120
312x-272x = 3120
40x = 3120
x = 3120/40 = 78 miles per hour
x = y + 10 = y + 78
x = 88 miles per hour
