# Posts by Susanna

Total # Posts: 9

**math**

which would be better for determining the sample space, a tree diagram or an area model? Justify your answer

**geometry**

What's a sample space??? its asking about a tree diagram or an area model

**Maths**

Expand and simplify expression for the area of an rectangle Shorter side = x+3 Longer side = 5x-4

**Calculus**

Air is being pumped into a spherical balloon so that its volume increases at a rate of 80 cm^3 per second. How fast is the surface area of the balloon increasing when its radius is 9cm? * ball of radius r has volume V=(4/3)pi r^3 and surface area S=4pir^2 ** I try to do it ...

**Calculus**

If f(x)=8 ln(6x+3 ln (x)), find f'(x)

**Calc**

volume of cone = (1/3)pi(r^2)h but h=2r or r = h/2 then volume = (1/12)pi(h^3) dV/dt = (1/4)pi (h^2) dh/dt 10 = (1/4)pi (23^2)dh/dt solve for dh/dt

**English**

Everyone has had regrets about something in life. The regrets could have been about a relationship or another choice that he or she made. Sometimes we make decisions based on how we are feeling at the moment, and we do not really take the time to think about it. My biggest ...

**physics**

A 1kg mass is suspended from a vertical spring with a spring constant of 100 N/m and the equilibrium position is noted. The spring is then pushed upward (compressed) a distance x=10 cm before the mass is released from rest. How fast will the block be moving when it passes ...

**Spanish**

Could someone proof my essay about enny in two stories? thanks! La Envidia

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