A cyclist travels north along a road at a constant speed of 28 miles per hour. At 1:00 P.M., a runner is 68 miles away, running
1 answer:
Answer:
The speed of the runner is 6 miles per hour.
Step-by-step explanation:
Given the distance between the cyclist and the runner is 68 miles.
Given the speed of the cyclist is 28 miles per hour.
Initial time is 1:00PM Final time is 3:00PM
Time elapsed is 3-1=2hours
Let the cyclist travel a distance of x miles,Then the distance travelled by the runner is 68-x miles.
for the cyclist
x=56 miles
the distance travelled by the runner is 68-56=12 miles
speed of the runner = 12/2 = 6 miles per hour
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Answer:
Option 3rd is correct that is
Step-by-step explanation:
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Triangle is enclosed figure.
As we know the sum of interior angles of triangles is
Therefore, Option 1,2,4 are discarded.
Hence, Option 3rd is correct.
Answer:
Raul's errors are in the application of the distributive property(he applied it wrongly), in not respecting the precedence of operations, and in the multiplication of two terms with the same base(we add the exponent).
Step-by-step explanation:
Distributive property:
The distributive property of multiplication is:
a*(b + c) = a*b + a*c
Precedence of operations:
First multiplication, then addition.
Multiplication of terms with the same base:
The multiplication of h*h = h², which Raul missed.
The correct simplification is given by: