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Butoxors [25]
4 years ago
13

PLEASE HELP!!!

Mathematics
2 answers:
Svetradugi [14.3K]4 years ago
8 0
B or c for the equation because it is 1-n
Fudgin [204]4 years ago
8 0
\bf \sum\limits_{n=1}^{6}~(1-n)
\\\\\\
\stackrel{\stackrel{n=1}{1-1}}{0}~~+~~\stackrel{\stackrel{n=2}{1-2}}{-1}~~+~~\stackrel{\stackrel{n=3}{1-3}}{-2}~~+~~\stackrel{\stackrel{n=4}{1-4}}{-3}~~+~~\stackrel{\stackrel{n=5}{1-5}}{-4}~~+~~\stackrel{\stackrel{n=6}{1-6}}{-5}
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After 4,000 gallons of water were added to a large water tank that was already filled to 3/4 of its capacity, the tank was then
dangina [55]

Answer:  The correct option is

(E) 80,000.

Step-by-step explanation:  Given that after adding 4,000 gallons of water to a large tank that was already filled to \dfrac{3}{4} of its capacity, the tank was then at \drac{4}{5} of its capacity.

We are to find the number of gallons of water that the tank hold when filled to capacity.

Let the tank can hold x gallons of water when filled to capacity.

Then, according to the given information, we have

\dfrac{3}{4}x+4000=\dfrac{4}{5}x\\\\\\\Rightarrow \dfrac{4}{5}x-\dfrac{3}{4}x=4000\\\\\\\Rightarrow \dfrac{16-15}{20}x=4000\\\\\Rightarrow x=4000\times20\\\\\Rightarrow x=80000.

Thus, the required capacity of the tank is 80,000 gallons of water.

Option (E) is CORRECT.

4 0
3 years ago
Rodrigo made 6/8 of a pound of trail mix. If he puts 1/4 of a pound into each bag, how many bags can Rodrigo fill?
ValentinkaMS [17]

Answer:

He can fill 3 bags

Step-by-step explanation:

You would first make them have a common denominator so you would have 2/8 instead of 1/4 then you would do 6/8 divided by 2/8 to get 3

1/4 = 2/8

6/8 divided by 2/8 = 3

7 0
3 years ago
Read 2 more answers
Suppose a classroom teacher wants to measure whether offering candy as a reward will increase the number of times that a student
ahrayia [7]

Answer:

C) Matched pairs

Step-by-step explanation:

Matched samples (also called matched pairs, paired samples or dependent samples) is a type of sampling that involves pairing participants that share every characteristic except for the one under study. The paired participants could be same individuals studied at different time such as:

  1. The study of same participants before and after an interference.
  2. The study of the same participants at two different interference.
5 0
3 years ago
How many times larger is 4 x 10 12 than 8 x 10 7?
USPshnik [31]

Answer:

50000 times

Step-by-step explanation:

Since these are given in scientific notation, we can convert them to have the same powers of 10. Converting 4*10^12 to something times 10^7, we can get 4*10^5*10^7. So we divide 400000 by 8 to see how many times larger it is than 8. So we get 50000 times as our answer.

5 0
3 years ago
Approximate the logarithm using the properties of logarithms, given
Alekssandra [29.7K]

Answer:

-0.2084

Step-by-step explanation:

log_{b}( \frac{2}{3} )  \\  \\  =  log_{b}(2)  - log_{b}(3)  \\  \\  =0.3562 -  0.5646 \\  \\  = -0.2084

4 0
3 years ago
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