Answer: About 3
Step-by-step explanation:
Given : A lawn is in the shape of a trapezoid with following dimensions :-
Height : h = 50 feet
Bases : a = 30 feet and b=170 feet
Area of trapezoid is given by :-
Also , it is given that each bag covers 2400 square feet.
Then, the number of bags of fertilizer needed = 
Hence, about 3 bags of fertilizer must be purchased to cover the lawn.
Therefore, the bones were 6612.5 years old at the time they were discovered.
<h3><u>Half life</u></h3>
Given that the radioactive element carbon-14 has a half-life of 5750 years, and a scientist determined that the bones from a mastodon had lost 57.5% of their carbon-14, to determine how old were the bones at the time they were discovered, the following calculation must be made:
- 50 = 5750
- 100 = 11500
- 57.5 = X
- 57.5 x 11500 / 100 = X
- 6612.5 = X
Therefore, the bones were 6612.5 years old at the time they were discovered.
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Answer:
3.5 in
Step-by-step explanation:
Circumference = 2π(radius)
7π = 2π (radius)
7π/2π = radius
Pi in numerator and denominator cancel each other.
7/2 = radius
3.2 in = radius
I believe it's the same as adding 8+3, but you add the negative sign to your answer
so 8+3 = (-?)
Answer:
11,040 is the answer
Step-by-step explanation:
you just need to subtract
