Answer: 55.56
Step-by-step explanation:
Let the unknown number be k
(45 x k) / 100 = 25
45k/100 = 25
multiply both sides by 100
45k = 25 x 100
45k = 2500
divide both sides by 45
k = 2500/45
k = 55.56
Unit means one.
The fractions with numerator is one and the denominator is any positive integer. Such fractions are called unit fractions.
It is also defined as the reciprocal of the any positive integers.
Example of the unit fractions are
The fraction with numerator is any number other one is called
the non-unit fractions.
Example of the non-unit fractions are
Move everything to one side and factorize by grouping.
x⁴ - 4 = x³ + 2x
x⁴ - x³ - 2x - 4 = 0
(x⁴ - 4) - (x³ + 2x) = 0
(x² - 2) (x² + 2) - x (x² + 2) = 0
(x² - x - 2) (x² + 2) = 0
(x - 2) (x + 1) (x² + 2) = 0
Then
x - 2 = 0 or x + 1 = 0 or x² + 2 = 0
x = 2 or x = -1 or x² = -2
If x is real, then the third case has no solution. Then x = 2 or x = -1. Otherwise, we can solve over the complexes and include x = ± √2 i where i = √(-1).
The number of times a graph crosses the x axis is the same as asking how many zeroes has the function represented by that graph.
The number of zeroes is given by the power of the independent variable, in this case x.
Given that the maximum power of x is 2, then the function has 2 zeroes and the graph crosses the x axis 2 times
Answer:
Depth of Martens aquarium water = 14 cm.
Step-by-step explanation:
Given:
An aquarium,which is a right rectangular prism.
Length of the aquarium, 
= 18.5 cm
Width of the aquarium, 
= 15 cm
Volume of the aquarium, 
= 3885 cm cubes
We have to find the depth of the aquarium.
Let the depth be 
cm.
Note:
Volume of the rectangular prism,V=lbh.
⇒ = 
⇒ 
⇒ Plugging the values.
⇒ 
⇒ 
cm
So,
The depth of the aquarium water is 14 cm.
