Help!!!!!! Pleaseeeee

Mathematics

1 answer:

Gnoma [55]3 years ago

7 0

Answer:

Step-by-step explanation:

if you solve all of them

2(4x) = 8x

a) 2 + 4x well you cant simplify more on that so no that wouldnt be the answer

b) (2 × 4)x = 8(x) = 8x

c) would equal 4 + 8x

d) 8 + 8x

hope I helped ;)

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If 8,a,b,27 are in geometric sequence, find the value of a and b.

wel

Answer:

a = 12 and b = 18

Step-by-step explanation:

Given that,

8,a,b,27 are in geometric sequence.

For a GP, the nth term is given by :

$a_n=ar^{n-1}$

Put n = 4

$a_4=ar^{4-1}\\\\a_4=ar^3\\\\27=8\times r^3\\\\r^3=\dfrac{27}{8}\\\\r=\dfrac{3}{2}=1.5$

Put n = 2,

$a_2=ar^{2-1}\\\\a=ar\\\\a=8\times 1.5\\\\a=12$

Put n = 3

$a_3=ar^2\\\\=8\times 1.5^2\\\\b =18$

So, the values of a and b is 12 and 18 respectively.

3 0

3 years ago

What is the LCM of 3 and 8

Zigmanuir [339]

$LCM: Lowest CommonMultple \\ \\ Answer: 24 \\ \\ \\ \\ \\ Why? \\ \\ 3: 3^1 \\ \\ 8: 2^3$

$3^1 (2^3)= 24$

That's how we found our answer was: $24$

You can also go through your multiplication of $3$ & $8$

Good luck on your assignment and enjoy your day

~ $MeIsKaitlyn:)$