P.E.M.D.A.S
~Parentheses
44(-3)(4)
~Multiply/Divide left to right
-132(4)
-528
Answer:
Given equation: 2(x+7) = 36. ......[1]
Distributive Property of multiplication states that when a number is multiplied by the sum of two numbers, the first number can be distributed to both of those numbers and multiplied by each of them separately i.e,
Then,
By using the distributive property in equation [1];
2(x+7) = 36
Simplify:
Divide both sides by 2 in above equation:
Simplify:
x+7 = 18.
Therefore, the first correct step would be option B,
after that the next step would be option A then option F as shown above;
Remaining options are not enough information to solve the given equation 2(x+7) = 36.
Answer:
6.5×10'3=6,500.
5.5×10'5=550,000
1.1×10'3=1,100
so as u can see the second number is greater
by 548,900
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.
Learn more about half life in brainly.com/question/24710827
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