Can anyone please help me?

Mathematics

2 answers:

VARVARA [1.3K]2 years ago

6 0

Answer:

You multiply 5 by 1/5 to get 1. So with 2x, you multiply by 1/(2x) to get 1. That's about all you know, since we only know that x is positive.

Step-by-step explanation:

Hope it helps

Anastasy [175]2 years ago

6 0

Answer:

$\frac{25}{10x-1}$

Step-by-step explanation:

The multiplicative inverse of "a" is " $\frac{1}{a}$ "

a × $\frac{1}{a}$ = 1

~~~~~~~~~~~

$\frac{1}{5}$ ( 2x - $\frac{1}{5}$ ) = $\frac{2}{5}$ x - $\frac{1}{25}$

1 ÷ ( $\frac{2}{5}$ x - $\frac{1}{25}$ ) = 1 ÷ ( $\frac{10x}{25}$ - $\frac{1}{25}$ ) = 1 ÷ ( $\frac{10x - 1}{25}$ ) = $\frac{25}{10x-1}$

The multiplicative inverse of the product is $\frac{25}{10x-1}$

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a rectangular prism with a volume of 10 cubic units is filled with cubes with side lenghts of 1/2 unit how many 1/2 unit cubes d

Pachacha [2.7K]

Answer:

Step-by-step explanation:

The volume of a cube is

V=s^3, we are told the volume is 10u^3 and that it will be filled with cubes having a side of 1/2 so

n(1/2)^3=10, where n will be the number of these small cubes

n(1/8)=10 upon multiplying each side by 8

n=80

So it will take 80 cubes of side length 1/2 to have a volume equal to 10u^3

6 0

2 years ago

The Tetrahedron Superyacht designed by Jonathan Schwinge is a regular tetrahedron with edges 20 m long. The distance r from one

shusha [124]

A tetrahedron is a triangular pyramid. It has four triangular faces and four vertices.

In the question, we are told that the length of the edges are all equal = 20m and the length from one corner to the center of the base = 11.5m

We sketch a diagram of a tetrahedron with the given measurement as shown below

To find the height, we will use the Pythagoras theorem

20² = h² + 11.5²
h² = 20² - 11.5²
h² = 267.75
h = √267.75
h = 16.36 (rounded to two decimal places)