Identify which of the following variables are discrete and which are continuous: a. number of warts on a toad b. survival time after poisoning c. temperature of porridge d. number of bread crumbs in 10 meters of trail e. length of wolves’ canines

1. Number of warts on a toad ⇒ discrete  variable

2. Survival time after poisoning ⇒ continuous  variable

3. Temperature of porridge ⇒ continuous  variable

4. Number of bread crumbs in 10 meters of trail ⇒ discrete  variable

5. Length of wolves’ canines ⇒ continuous variable

A discrete variable is the one which takes over range of real number, for a value in range that variables are permitted to take, there is minimum distance to nearest permissible value. In contrast, continuous variables are the one which can take infinitely many values.  

50-38=12

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct