A triangle has a height that is increasing at a rate of 2 cm/sec and its area is increasing at a rate of 4 cm2/sec. Find the rate at which the base of the triangle is changing when the height of the triangle is 4 cm and the area is 20 cm2 .

The value of rate of which the base is changing = - 3

Step-by-step explanation:

Area = 20

height = 4 cm

we know that area of the triangle is given by

B = 10 cm

Rate of change of area is given by

4 =  0.5 [10 × 2 + 4 ]

= - 3

This is the value of rate of which the base is changing.

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.