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3 years ago

PLZ HELP :(

2 answers:

7 0

The ordered pairs are:
<span>{(1, 80), (2, 240), (3, 720), (4, 2160)}

with
a_1 = 80
a_2 = 240
a_3 = 720
a_4 = 2160

The terms are in a geometric sequence with a common ratio of
240/80 = 720/240 = 2160/720 = 3

The equation is:
a_n = 80 * 3^(n - 1)</span>

defon3 years ago

3 0

Answer:

Actually the answer is 80(3)^t-1

i put your answer and got it wrong!!!!X(

Step-by-step explanation: So for any future people needing help the answer is:

80(3)^t-1

hope I helped!!!

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In the diagram, TC represents a vertical building. The points, A and B, are on the same level as the foot C of the building such

Alenkinab [10]

Answer:

(a) The height of the building is 60.06 m

(b) The distance AB is 139.43 m

Step-by-step explanation:

The given parameters are

Given that segment BT = segment AT + 29

By trigonometric ratios, we have;

cos∠ATC = CT/AT

cos∠BTC = CT/BT

Therefore, we have;

cos(40°) = CT/AT.................................(1)

cos(56°) = CT/BT = CT/(AT + 29).....(2)

cos(56°) = CT/(AT + 29)......................(3)

From equation (1)

CT = AT×cos(40°)

From equation (3)

AT×cos(56°) + 29 × cos(56°) = CT

Therefore;

AT×cos(40°) = AT×cos(56°) + 29 × cos(56°)

AT×cos(40°) - AT×cos(56°) = 29 × cos(56°)

AT×(cos(40°) - cos(56°)) = 29 × cos(56°)

AT = 29 × cos(56°)/(cos(40°) - cos(56°)) = 78.4 m

TC = CT = AT×cos(40°) = 78.4×cos(40°) = 60.06 m

The height of the building = 60.06 m

(b) BT = AT + 29 = 78.4 m + 29 m= 107.4 m

AB = AT×sin(∠ATC ) + BT×sin(∠BTC) = 78.4×sin(40°) + 107.4×sin(56°) = 139.43 m

The distance AB = 139.43 m.

6 0

3 years ago

7b divided by 12 = 4.2 what does b equal

iogann1982 [59]

It is 0.35 That is the answer.

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We can calculate eee, the amount of euros that has the same value as ddd u.S. Dollars, using the equation e=\dfrac{17}{20}de= 20

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We are given eqaution: $e=\frac{17}{20}d$ , where e the amount of euros and d is the value as U.S. Dollars.

We need to find number of euros for 1 U.S. Dollar.

Plugging d=1 in the given equation

We get

$e=\frac{17}{20}(1)$

On simplfying , we get

$e=\frac{17}{20}$

Dividing 17 by 20, we get 0.85.

Therefore, there would be 0.85 euro have the same value as 1 U.S. Dollar.

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