There are numerous important information's already given in the question. Based on these information's, the answer can be deduced.
Let us assume the age of Daniel = x years
Let us assume the age of Kevin = y years
Then
y = 4x
and
y = x + 6
So
4x = x + 6
4x - x = 6
3x = 6
x = 6/3
= 2 years
So
Age of Kevin = 4 * 2 years
= 8 years
Answer:
7/2
Step-by-step explanation:
Answer:
5/8
Step-by-step explanation:
How much pizza is left between Mary and Hector combined?
Since both had a medium pizza, we'll say the pizzas were the same size.
So, we just have to make the sum:
The addition is easy since both members of the addition have the same denominator (8). So, we just have to add up the numerators.
Since 5/8 is already expressed to its most simple expression, that's the answer.
Answer:
The surface area of a solid object is a measure of the total area that the surface of the object occupies. The mathematical definition of surface area in the presence of curved surfaces is considerably more involved than the definition of arc length of one-dimensional curves, or of the surface area for polyhedra (i.e., objects with flat polygonal faces), for which the surface area is the sum of the areas of its faces. Smooth surfaces, such as a sphere, are assigned surface area using their representation as parametric surfaces. This definition of surface area is based on methods of infinitesimal calculus and involves partial derivatives and double integration.
Step-by-step explanation:
