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3 years ago

Helppppp me plzzzzzzzzzzz

Mathematics

1 answer:

Iteru [2.4K]3 years ago

4 0

Answer:

congruent

Step-by-step explanation:

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What is the common ratio and explicit formula for -2,6,-18,54?

Snezhnost [94]

Answer:

The explicit formula for a given geometric sequence is of the form

$a_{4} =\frac{1}{(a_{1})^4}$

Step-by-step explanation:

Given sequence is ${\{-2,6,-18,54}\}$

Let $a_{1}=-2,a_{2}=6,a_{3}=-18,a_{4}=54$

To find the common ratio r:

$r=\frac{a_{2}}{a_{1}}$

$=\frac{6}{-2}$

$=-3$

Therefore r=-3

$r=\frac{a_{3}}{a_{2}}$

$=\frac{-18}{6}$

$=-3$

Therefore r=-3

Therefore common ratio is -3

Therefore given sequence is geometric sequence.

The explicit formula for a geometric sequence is $a_{n}=a_{1}^{r-1}$ , where common ratio is r.

From given sequence we are having r=-3

Therefore the explicit formula for a given geometric sequence is of the form $a_{4} =a_{1}^{-3-1}$

$a_{4} =a_{1}^{-4}$

$a_{4} =\frac{1}{(a_{1})^4}$

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3 years ago

Find the value of x. 7 D 3 B В х С X =

bekas [8.4K]

Answer:

x = $\sqrt{30}$

Step-by-step explanation:

Using the Altitude- on- Hypotenuse theorem

(leg of Δ ABC )² = (part of hypotenuse below it ) × ( whole hypotenuse )

x² = 3 × (3 + 7) = 3 × 10 = 30 ( take the square root of both sides )

x = $\sqrt{30}$

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3 years ago

Can anyone help with any of these subjescts

Vadim26 [7]

Classify real numbers i can possibly help with! hmu! ill help

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16. Find the domain of x^2 + 5x + 4 / x^2 + 7x + 6

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The number of Liters remaining in a 100 Liter tank that is draining at a rate of 4 Liters per minute for m

serg [7]

Answer:

Big fella

Step-by-step explanation:

100-4 x m

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3 years ago

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