2 years ago

If Mark 12 times older than his brother and his brother is 7 times younger how old his brother

Mathematics

1 answer:

krok68 [10]2 years ago

3 0

Answer:

word

Step-by-step explanation:

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Find the oth term of the geometric sequence 7, 14, 28, ...

yaroslaw [1]

Answer:

The nth term of the geometric sequence 7, 14, 28, ... is:

$a_n=7\cdot \:2^{n-1}$

Step-by-step explanation:

Given the geometric sequence

7, 14, 28, ...

We know that a geometric sequence has a constant ratio 'r' and is defined by

$a_n=a_1\cdot r^{n-1}$

where a₁ is the first term and r is the common ratio

Computing the ratios of all the adjacent terms

$\frac{14}{7}=2,\:\quad \frac{28}{14}=2$

The ratio of all the adjacent terms is the same and equal to

$r=2$

now substituting r = 2 and a₁ = 7 in the nth term

$a_n=a_1\cdot r^{n-1}$

$a_n=7\cdot \:2^{n-1}$

Therefore, the nth term of the geometric sequence 7, 14, 28, ... is:

$a_n=7\cdot \:2^{n-1}$

6 0

2 years ago

Y = –x + 4

aliina [53]

Y = -x + 4.....so sub in -x + 4 in for y in the other equation

x + 2y = -8
x + 2(-x + 4) = -8
x - 2x + 8 = -8
x - 2x = -8 - 8
-x = -16
x = 16

y = -x + 4
y = -16 + 4
y = - 12

one solution (16,-12)

8 0

2 years ago

Read 2 more answers

if you took a loan of fifteen million dollars from the bank and the loan is to be repaid in ten years at a simple interest of 5%

Vikki [24]

$750000 for all 10 years and $375000 for just ten years

7 0

2 years ago

What is the interpret of the equation 2x+1. 5y=30

Setler [38]

The intercept would be 5 Y if you acually solve that equation

6 0

2 years ago

The numbers in the diagram below indicate the lengths of the sides of a triangle. Bernadette drew the following triangle and cla

xz_007 [3.2K]

Answer:

It's not a right triangle, there isn't a right angle anywhere there.

Also, it's not applicable via pythagorean theorem

Step-by-step explanation:

8 0

2 years ago

If Mark 12 times older than his brother and his brother is 7 times younger how old his brother​

If Mark 12 times older than his brother and his brother is 7 times younger how old his brother