Answer:
P=380 ft.
Explanation:
Area=length x width
Perimeter= 2*length + 2*width
Width= 4*length + 8
A=5472 ft²
5472= l * (4l +8) (plug in values)
5472 = 4l² +8l (simplify)
4l² + 8l - 5472 = 0 (subtract 5472)
4(l² + 2l -1368) = 0 (factor out a 4)
4(l +38)(l-36)=0 (factor)
l=36 ft. (-38 is extraneous because it is negative)
5472=38*w
w=152 ft.
P=2(38) + 2(152)
P= 380 ft.
Answer:
True is the correct answer.
Explanation:
Weather is defined as the state of the atmosphere at a place and time as regards dryness, wind, rain, sunshine, etc.
Climate is defined as the weather averaged over a long period.
Of the given options, (B) Tropical, polar, moderate is the set of words that closely relates to climate.
Because these words describe the weather over a prolonged period whereas all the other sets of words describe the atmospheric condition over a short period of time.
Answer:
After 9 more minutes, her cell battery will be 80% charged.
Explanation:
Let us try to make an equation here to describe the relation between battery and time.
It is given that the battery charges at a constant rate so we can assume that
battery(
) ∝ Time(
)
But at t=0, the battery is already 30% charged so we rewrite the equation as follows:
-(1)
Now,
at put t=36 and b=70 in Eqn 1:
We get 
The final eqn is 
Put b=80
We get:
∴ It will take (45-36)=9 more minutes to reach 80% battery.
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