4. what is the value of x in the triangle at the right?
a. 23
b. 32
c. 125
d. 148

148 (the sum of  125 and 23)

Step-by-step explanation:

Each exterior angle has 2 remote interior angles.  The remote interior angles are the two angles on the inside of the triangle that are not touching the exterior angle.  The sum of these 2 angles is the measurement  of the exterior angle

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)