What is x?
i forgot what to do pls help me

x = 8

Step-by-step explanation:

The tape diagram is basically saying that the value of 15 + x is the same size (or is equal to) 23.

so, you can make the following equation:

15 + x = 23

subtract 15 from both sides of the equation

15 + x - 15 = 23 - 15

x = 23 - 15

x = 8

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

4400

step-by-step explanation: