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3 years ago

Q: Simplify. 1. 3^(n+1) - 3^n / 3^(n-1)

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

7 0

Answer:

3^(n+1) - 3^n / 3^(n-1) = 6

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A paddle boat can move at a speed of 2 km/h in still water. The boat is paddled 16 km downstream in a river in the same time it

MaRussiya [10]

going downstream -

t = 14/(2 + v)

going upstream -

t = 7/(2 - v)

14/(2 + v) = 7/(2 - v)

(2 + v)/2 = 2 - v

v = 2/3km/h

6 0

4 years ago

Y is proportional

Scorpion4ik [409]

Answer:

B :) (im sure btw)

Step-by-step explanation:

5 0

3 years ago

Find the value of x urgent!! plz help me! will give the brainliest

Anarel [89]

Answer:

x = 2

Step-by-step explanation:

$\frac{1}{2} (x - 1) - \frac{1}{6} (x+1) = 0$

In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we divided by 2 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.

$\frac{1}{2} (x - 1) - \frac{1}{6} (x+1) = 0$

→ Expand the brackets

$\frac{1}{2} x- \frac{1}{2}-\frac{1}{6}x -\frac{1}{6} =0$

→ Multiply everything by 12 to make solving the equation easier

6x - 6 - 2x - 2 = 0

→ Simplify equation

4x - 8 = 0

→ Add 8 to both sides to isolate 4x

4x = 8

→ Divide by 4 on both sides to isolate x

x = 2

⇒ We can substitute x = 2 back into the equation to see if the solution is correct, if we get 0 on both sides then x = 2 is correct

$\frac{1}{2} (x - 1) - \frac{1}{6} (x+1) = 0$

⇒ Substitute in the values

$\frac{1}{2} (2-1)-\frac{1}{6} (2+1) = 0$

⇒ Simplify

$\frac{1}{2} (1)-\frac{1}{6} (3) = 0$

⇒ Simplify further

$\frac{1}{2} -\frac{1}{2} =0$

0 = 0

The solution x = 2 is correct

4 0

3 years ago

A stand at a farmers market sells different types of apples as shown in the table. which type of apple cost the least per pound?

viktelen [127]

Answer:

Where is the table?

Step-by-step explanation:

4 0

3 years ago

I WILL MARK YOU A BRAINLIEST IF YOU HELP NOW!!! PLEASE

Nikitich [7]

Define the formula for the surface area of a square pyramid.
A square pyramid has a square base and four triangular sides.
The formula for this case is:
A = s ^ 2 + 2 * s * L
Where,
s: side of the base
L: inclined height
The inclined height is:
L = root (h ^ 2 + (s / 2) ^ 2)
Where,
L = root (12 ^ 2 + (12/2) ^ 2)
L = root (144 + 36)
L = root (180)
L = 13.42
Substituting values:
A = (12) ^ 2 + 2 * (12) * (13.42)
A = 466.08 in ^ 2
Answer:
The surface area is:
A = 466.08 in ^ 2

5 0

3 years ago

Q: Simplify. 1. 3^(n+1) - 3^n / 3^(n-1)​

Q: Simplify. 1. 3^(n+1) - 3^n / 3^(n-1)