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lana [24]
3 years ago
9

I don’t really understand this anyone here to help

Mathematics
1 answer:
Troyanec [42]3 years ago
8 0

Answer:

1/10  5    2

20    1     1/20

1/2    1/5  10

Step-by-step explanation:

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Find the sum of all 11 terms of an AP whose middlemost terms is 30?
Bond [772]

Let the difference between consecutive terms be D. If the middle term is 30, then the term before it is 30-D, and the term after it is 30+D. So the sum of these three terms would be (30-D) + 30 + (30+D) = 3*30.

Extending this sum to include all 11 terms centered around 30, we see that any addition of D is canceled by a balanced subtraction, leaving you with 11 copies of 30. So the value of the sum is 11*30 = 330.

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3 years ago
If y varies directly as x and y=288 when x=16 determine the value of y when x-13
Ray Of Light [21]
Y = kx is the direct variation equation
Substitute the x and y that are given to find k then write your new equation in terms of y with the k.

288 = k(16) divide by 16 to find k
18 = k
Now write the new equation
y = 18x

y = 18(13) or y = 18(-13) I'm not sure by what you have typed if that is supposed to be and equal sign or a negative.
y = 234 OR y = -234
5 0
3 years ago
An airline allows passengers 36 kilograms of luggage . Carl has to lower the weight of his bag by 25% to stay within the limit .
Vsevolod [243]
The suit case originally weights 48 kg
.75x = 36x = 33/ .75 = 48
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3 years ago
Caleb was out at a restaurant for dinner when the bill came. His dinner came to $13. He wanted to leave a 11% tip. How much was
frozen [14]

Answer: 13+ 1.43 witch is 14.43

Step-by-step explanation: 11% of 13 is .11 times 13 witch is 1.43 so add them and you get the answer of 14.43

4 0
3 years ago
Read 2 more answers
How would you write a term with a numerical coefficient of -5 and variable of q
nekit [7.7K]
The coefficient is just what the variable is multiplied by, so:

-5q.
7 0
3 years ago
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