Answer:
x = -5
Step-by-step explanation:
Divide each term by 4 and simplify.
Move all terms not containing X to the right side of the equation.
Divide each term by 3 and simplify.
Answer: The answer is 720
Step-by-step explanation: I started off by guessing a random number, i picked 10. So i multiplied 12x10 and i got 120. I added 120 with 120 until i got something close enough (720.) I got it right on the test as well- :)
List the four types of organic macromolecules. Provide specific molecular examples of each.
There would be 12 people at the party!
In general, with n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.
Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.
This is the quadratic equation n2+ n -132 = 0. Solving for n, we obtain 11 as the answer and deduce that there were 12 people at the party.
Since 66 is a relatively small number, you can also solve this problem with a hand calculator. Add 1 + 2 = + 3 = +... etc. until the total is 66. The last number that you entered (11) is n.
Hope this helps!
Answer:
63 monocotyledons
Step-by-step explanation:
some abbreviations ill be using:
monocotyledons=m
dicotyledons=d
3m / 4d
x / 84d
you need to figure out what x is
you can divide 84/4 and get 21
now that you have 21, you can multiple that number by 3
21x3=63
therefore, there are 63 monocotyledons
