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3 years ago

5

The first four terms of a sequence are shown below: 7, 4, 1, −2 Which of the following functions best defines this sequence? plz

help its 10 POINTS!!!!

2 answers:

Simora [160]3 years ago

3 0

X1 - 3 = x2
subtract 3 from the first value to get the second one

Lelu [443]3 years ago

3 0

$T_n = a_1 + d(n - 1)$

$a_1 = 7 , d = -3$

$T_n =7 - 3(n - 1)$

$T_n =7 - 3n + 3$

$T_n =10 - 3n$

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Please help asap! Thanks in advance. :)

Nitella [24]

Vlad did not make a mistake.

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3 years ago

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Which of the equations below could be the equation of this parabola? A y = 1/6x2 B. x = -1/6y2 C. x = 1/6y2 D. y = -1/6x2

Schach [20]

Answer:

C

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7 0

3 years ago

Given segments AB and CD intersect at E.

nata0808 [166]

The length of a segment is the distance between its endpoints.

$\mathbf{AB = 3\sqrt{2}}$
AB and CD are not congruent
AB does not bisect CD
CD does not bisect AB

<u>(a) Length of AB</u>

We have:

$\mathbf{A = (1,2)}$

$\mathbf{B = (4,5)}$

The length of AB is calculated using the following distance formula

$\mathbf{AB = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}}$

So, we have:

$\mathbf{AB = \sqrt{(1 - 4)^2 + (2 - 5)^2}}$

$\mathbf{AB = \sqrt{18}}$

Simplify

$\mathbf{AB = 3\sqrt{2}}$

<u>(b) Are AB and CD congruent</u>

First, we calculate the length of CD using:

$\mathbf{CD = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}}$

Where:

$\mathbf{C = (2, 4)}$

$\mathbf{D = (2, 1)}$

So, we have:

$\mathbf{CD = \sqrt{(2 -2)^2 + (4 - 1)^2}}$

$\mathbf{CD = \sqrt{9}}$

$\mathbf{CD = 3}$

By comparison

$\mathbf{CD \ne AB}$

Hence, AB and CD are not congruent

<u>(c) AB bisects CD or not?</u>

If AB bisects CD, then:

$\mathbf{AB = \frac 12 \times CD}$

The above equation is not true, because:

$\mathbf{3\sqrt 2 \ne \frac 12 \times 3}$

Hence, AB does not bisect CD

<u>(d) CD bisects AB or not?</u>

If CD bisects AB, then:

$\mathbf{CD = \frac 12 \times AB}$

The above equation is not true, because:

$\mathbf{3 \ne \frac 12 \times 3\sqrt 2}$

Hence, CD does not bisect AB

Read more about lengths and bisections at:

brainly.com/question/20837270

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3 years ago

Which statements are true?

Alinara [238K]

Collinear means the points are lying on single straight line
So B)with K G R form a single straight line is correct
Coplanar means the points are in the same plane
So D)with H G K N on the same plane is correct

Overall,B) and D) are correct

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3 years ago

A boater travels 532 miles. Assuming the boat averages 6.3 miles per gallon, how many gallons of gasoline(to the nearest then of

Readme [11.4K]

Answer:

84.4 gallons to the nearest tenth.

Step-by-step explanation:

Average usage = miles travelled / gallons used so:

6.3 = 532 / gallons used

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3 0

3 years ago