$60 ÷ $15 = 4
$9 × 4 = $36
he saved $36 when he earned $60
Answer:
In mathematics, a differential equation is an equation that relates one or more functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent their rates of change, and the differential equation defines a relationship between the two.
Step-by-step explanation:
Perpendicular lines have negative reciprocal slopes. So if the slope is -2/5...to find the negative reciprocal, " flip " the slope and change the sign.
So we flip -2/5 and we get 5/-2...and now we change the sign...and we get 5/2. So our perpendicular slope will be 5/2.
Answer:
tam 20 = 4 / x
x = 4 /tan 20 = 4 / .364 = 10.99
