36) What is the mass of a 4.259 g/cm substance which takes up 250.00 cm of space?

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of substance = 250 cm³

density = 4.259 g/cm³

We have

mass = 4.259 × 250

We have the final answer as

Hope this helps you

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

i'm assuming that the correct answer is indeed the first one/ "a"..