There are 60 students in a speech contest. yesterday, 2/3 of them gave their speeches. today, 1/5 of the remaining students gave their speeches. how many students still haven't give their speeches?

16 students still have to give their speech

Step-by-step explanation:

Yesterday:

60 * 2/3 = 40

40 student gave speeches

that leaves 60-40 =20

20 students still have to give speeches

Today:

1/5 * 20 = 4

4 students gave speeches

20-4 = 16

16 students still have to give their speech

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

a.)the line for function b is steeper