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3 years ago

I need help on this question I need the answer please

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

5 0

Answer: -1
Explanation: I'm not completely sure but I think you just have to substitute x with 1

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Please please help me

Gekata [30.6K]

Answer:

$\large\boxed{\dfrac{\boxed{8}}{81}}$

Step-by-step explanation:

$\text{If}\ a_1,\ a_2,\ a_3,\ a_4,\ ...,\ a_n\ \text{is the geometric sequence, then}\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...=\dfrac{a_n}{a_{n-1}}=constant=r-\text{common ration}.\\\\\text{We have}\ \dfrac{1}{2},\ \dfrac{1}{3},\ \dfrac{2}{9},\ \dfrac{4}{27},\ ...\\\\\dfrac{\frac{1}{3}}{\frac{1}{2}}=\dfrac{1}{3}\cdot\dfrac{2}{1}=\dfrac{2}{3}\\\\\dfrac{\frac{2}{9}}{\frac{1}{3}}=\dfrac{2}{9}\cdot\dfrac{3}{1}=\dfrac{2}{3}\\\\\dfrac{\frac{4}{27}}{\frac{2}{9}}=\dfrac{4}{27}\cdot\dfrac{9}{2}=\dfrac{2}{3}$

$\bold{CORRECT}\\\\\dfrac{x}{\frac{4}{27}}=\dfrac{2}{3}\qquad\text{multiply both sides by}\ \dfrac{4}{27}\\\\x=\dfrac{2}{3}\cdot\dfrac{4}{27}\\\\x=\dfrac{8}{81}$

8 0

3 years ago

3xz (9xy+z)-2yz(x+y-z)

olga_2 [115]

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4 0

3 years ago

Is the number 8 odd or even?

Veseljchak [2.6K]

Hello there!

The number 8 is an even number, since it can be divided evenly by the number of 2.

Hope this helps and have a great day! :)

6 0

3 years ago

Evaluate if a=2 and b=8 6+7b-3a

VladimirAG [237]

Answer:

Step-by-step explanation:

6+7b-3a

Substitute:

6+7(8)-3(2)

Solve:

6+56-6

Simplify:

6+50

=56

7 0

3 years ago

Read 2 more answers

You build a fence around garden that measures 10 x 15 feet; how many feet of chain link fence will you need?

Neporo4naja [7]

Answer:

50 feet

Step-by-step explanation:

We have to find the perimeter of the fence surrounding the garden.

2l+2w

2(15) + 2(10)

30 + 20

= 50

50 feet will be needed.

6 0

3 years ago

Read 2 more answers