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photoshop1234 [79]

4 years ago

5

The product of a number (n-1) and the number (n+1) is always equal to ?

1 answer:

wolverine [178]4 years ago

5 0

It is an identity n^2-1. That is n square minus 1

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write a real world problem in which you need to find the volume of a right rectangular prism. solve your problem

Afina-wow [57]

Answer:

Find the sum of the series

∑(4x−5)

such that

1≤x≤7

.

answer is 77

Step-by-step explanation:

3 0

3 years ago

Simplify the rational expression.<br> 6x(x+3)(x - 2)<br> 3(x - 2)(x+9)

Murrr4er [49]

Answer:

The first one is 6 x^ 3 + 6 x^ 2 - 36 x

and the second one is 3x^2 + 21x - 54

4 0

3 years ago

Read 2 more answers

A cable is <br> 40<br><br> meters long. How long is the cable in decimeters?

AnnyKZ [126]

Hello,

1 meter is equal to 10 decimeters.

SO, if we convert 40 meters to decimeters, we multiply 40 meters by 10 decimeters, getting 400 decimeters.

Hope this helps!

May

6 0

3 years ago

If f(1) = 10 and f(n) = f(n = 1) – 4 then find the value of f(5).

svetoff [14.1K]

Given:

$f(1)=10$ and $f(n)=f(n-1)-4$ .

To find:

The value of f(5).

Solution:

We have,

$f(n)=f(n-1)-4$

For $n=2$ ,

$f(2)=f(2-1)-4$

$f(2)=f(1)-4$

$f(2)=10-4$

$f(2)=6$

For $n=3$ ,

$f(3)=f(3-1)-4$

$f(3)=f(2)-4$

$f(3)=6-4$

$f(3)=2$

For $n=4$ ,

$f(4)=f(4-1)-4$

$f(4)=f(3)-4$

$f(4)=2-4$

$f(4)=-2$

For $n=5$ ,

$f(5)=f(5-1)-4$

$f(5)=f(4)-4$

$f(5)=-2-4$

$f(5)=-6$

Therefore, the value of $f(5)$ is $-6$ .

5 0

3 years ago

Solve for x: ( sqrt 7) ^ 6x = 49 ^ (x-6)

LiRa [457]

$(\sqrt{7})^{6x}=49^{x-6} \\
(7^\frac{1}{2})^{6x}=(7^2)^{x-6} \\
7^{\frac{1}{2} \times 6x}=7^{2(x-6)} \\
7^{3x}=7^{2x-12} \\
3x=2x-12 \\
3x-2x=-12 \\
x=-12$

8 0

3 years ago