Answer:
original number is 13
Step-by-step explanation:
let n be the number then twice the number is 2n , so
2n - 16 = 10 ( add 16 to both sides )
2n = 26 ( divide both sides by 2 )
n = 13
The answer is 1.067. Hope it's not too late.
Answer:
The cost of the lessons taken
Step-by-step explanation:
Let
y -----> the total paid for the baseball bat and the lessons
c ----> the number of lessons
we have
y=25c+75
This is a linear equation in slope intercept form
y=mx+b
where
b=$75 -----> the price of he baseball bat (y-intercept)
m=25 $/lesson ----> the slope of the linear equation
therefore
25c represent the cost of the lessons taken
Check the picture below.
the area of the triangle whose base is AC and height is BD, is the same area of the triangle whose base is AB and altitude is BC, namely