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Zinaida [17]
3 years ago
10

Help pls is geometry

Mathematics
1 answer:
Burka [1]3 years ago
7 0

Answer:

C) 16, 6

Step-by-step explanation:

  1. Set AB and DC equal to eachother. 4x = x + 12.
  2. Subtract x from both sides. 3x = 12
  3. Divide by 3 to get x alone. x = 4
  4. Plug this x value in the equation for AB. 4•(4) = 16
  5. We know the AD equals 6, so that will be one of the values and we now know that AB equals 16.
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Could someone help me with B
pishuonlain [190]

Answer:

a_n = 12 - 3n

Step-by-step explanation:

The first term is 9.

Term 1 is 9.

Term 2 is 9 - 3.

Term 3 is 9 - 2(3).

Term 4 is 9 - 3(3).

Term 5 is 9 - 4(5)

Notice the pattern in terms 3 through 5. For each term, subtract 1 less than the term number multiplied by 3 from 9.

For term n, you subtract 1 less than n times 3 from 9.

The nth term is 9 - (n - 1) * 3

a_n = 9 - (n - 1) \times 3

Now we simplify the expression on the right side.

a_n = 9 - 3(n - 1)

a_n = 9 - 3n + 3

The expression for the nth term is

a_n = 12 - 3n

Let's see if it works.

n = 1

a_n = 12 - 3(1) = 12 - 3 = 9

n = 2

a_n = 12 - 3(2) = 12 - 6 = 6

n = 3

a_n = 12 - 3(3) = 12 - 9 = 3

n = 4

a_n = 12 - 3(4) = 12 - 12 = 0

n = 5

a_n = 12 - 3(5) = 12 - 15 = -3

n = 6

a_n = 12 - 3(6) = 12 - 18 = -6

As you can see, following this rule fro the nth term, we got the same first siz terms you got above. Our answer is correct.

Answer: a_n = 12 - 3n

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3 years ago
If you have $21 and the discount rate is 5% , how much money do you get off?
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5\%\cdot\$21.00=0.05\cdot\$21.00=\$1.05\\\\Ans.\ \$1.05
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Nicholas bicycled 15.8 kilometers each day for 18 days last month. how many kilometers did he bicycle last month?
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3 years ago
A coin is flipped twice. True or false, the unconditional probability of getting tails on the secondflip is the same as the cond
charle [14.2K]

Answer:  Given statement is TRUE.

Step-by-step explanation:

Let E and F represents  the events of getting tails on first flip and second flip respectively.

Then, we have

P(E)=\dfrac{1}{2},\\\\\\P(F)=\dfrac{1}{2}.

So, the unconditional probability of getting tails on the second flip is given by

P(F)=\dfrac{1}{2}.

And,  the conditional probability of getting tails on the second flip given that the first flip came up head is given by

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P(F)=P(F/E').

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Given statement is TRUE.

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