A pole that is 3.1 m tall casts a shadow that is 1.57 m long. At the same time, a nearby tower casts a shadow that id 50.5 m lon
1 answer:
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The sister catches up Jeff after 2 hours
Step-by-step explanation:
We can write Jeff's position and his sister position at time t using the following expressions:
- Jeff position:
where:
7 is the initial position of Jeff when his sister sarts chasing him
2.5 is Jeff's velocity (in miles/hour), so its position increases by 2.5 miles for each hour
t is the time measured in hours
- Sister position:
where
6 is the sister velocity (her position increases by 6 miles for every hour)
t is the time measured in hours
The sister catches up Jeff when the two positions are equal, so
And solving for t,
So, the sister catches Jeff after 2 hours.
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Answer:
Given expression : ......[1]
Using distributive property:
[1]⇒
Simplify:
Like terms are those terms which are same variables.
Combine like terms: we get;
......[2]
Simplify:
or
we can write equation [2] as;
Combine like terms of x variables;
Therefore, the expressions which are equivalent to the Given expression are: