Answer:
10 years.
Step-by-step explanation:
Let Jerome, Keenan, and Leitha have ages of x,y and z respectively,.
Then given that x+y =18 ... i
x+z =19 ... ii
y+z = 21 ... iii
From the above information we are to find out y and i.e.Keenan age.
Add all the 3 equations
Left side becomes x+y+y+z+z+x = 2(x+y+z)
and right side becomes = 18+19+21 = 58
In other words, 2(x+y+z) = 58
Divide by 2
x+y+z =29 ... iv
From the equation iv subtract ii
x+z =19
We get y = 10
Hence Kennan age = 10 years
Answer:
Option The area is increased by a factor of
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its areas is equal to scale factor squared
Let
z-----> the scale factor
x------> the area of the dilated rectangle
y------> the area of the original rectangle
we have
------> is an enlargement
so
substitute
therefore
The area is increased by a factor of
This is very easy to solve once you understanding writing equations. In this case, we could do n+6=100 because we know that the number of songs he has now (n) plus 6 will equal 100. Below is a solution for this equation.
n+6=100
-6 -6
n=94
After solving our equation, we know that Kirk has 94 songs.
Answer:
$19,000 after five years
Step-by-step explanation:
1900 * .5 = 3800 one year
5 * 3800 = 19,000
3n/7-2=4n-6
clear fraction .le, multiply by 7
3n-14= 28n -42
25n =28
n=28/25
n/7 =4/25
12/25-50/25= 112/25-150/25 = > 38=38.