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Mumz [18]
3 years ago
5

Tulislah empt suku pertama dari barisan yang rumus suku ke n nya adalah Un = 3n^2-1

Mathematics
1 answer:
nirvana33 [79]3 years ago
6 0
If n ∈ \mathbb{N} then
U_{0}=3(0)-1=-1
U_{1}=3(1)-1=2.
U_{2}=3(2^2)-1=11.
U_{3}=3(3^2)-1=26.
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3 years ago
I have to explained it in words pls help
lys-0071 [83]

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Answer:

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  • y-intercept: fixed base cost

Step-by-step explanation:

The y-intercept is the value of y when x=0. The problem statement tells you that x is the number of miles driven, and y is the rental cost.

When the number of miles driven is zero, the rental cost is ...

  y = 2.25×0 +70

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The cost of renting the truck is $70 when it isn't driven anywhere. The y-intercept ($70) is the basic, fixed cost of truck rental.

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If x=1 (1 mile driven), then 2.25 is added to the cost of the truck rental. The slope (2.25) is the cost per mile driven. (That mileage cost is added to the basic rental cost.)

6 0
2 years ago
F the angle of elevation from the point on the ground to the top of the tree is 34° and the point is 25 feet from the base of th
Viktor [21]

<u>Given:</u>

The angle of elevation from the point on the ground to the top of the tree is 34° and the point is 25 feet from the base of the tree.

We need to determine the height of the tree.

<u>Height of the tree:</u>

Let the height of the tree be h.

The height of the tree can be determined using the trigonometric ratio.

Thus, we have;

tan \ \theta=\frac{opp}{adj}

Substituting the values, we get;

tan \ 34^{\circ}=\frac{h}{25}

Multiplying both sides by 25, we have;

tan \ 34^{\circ} \times 25=h

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Rounding off to the nearest tenth of a foot, we get;

16.9=h

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3 years ago
In mathematics, the distance between one point (a) and another point (b), each with coordinates (x,y), can be computed by taking
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Mazyrski [523]

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Answer:

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Step-by-step explanation:

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3. Something that reduces to x = x will have an infinite number of solutions.

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3 years ago
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