102 = V - 66 Addition and subtraction equation practice
2 answers:
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Answer:
this is the answer of 2 and
Solving the system of equations, it is found that a viable time that the trains are side by side is given by:
B. 15 sec
<h3>What is a system of equations?</h3>A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the equations are:
They will be side by side when:
It's solution is a quadratic function with coefficients a = 14, b = -130, c = -1200, hence:
Time is a non-negative measure, hence option B is correct.
More can be learned about a system of equations at brainly.com/question/24342899
Answer:
4 minutes 30 seconds
Step-by-step explanation:
Given:
Erica can run 1/6 of a kilometer in one minute.
Her school is 3/4 of a kilometer away from her home.
Question asked:
How long would it take Erica to run home from school = ?
Solution:
As here distance is given and also speed is given, we will find time taken to run from home to school by using,
Therefore, it takes 4 minutes 30 seconds Erica to run home from school.