2s = 5c The equation is used the calculate s pounds of sand needed to mix with c pounds of cement in order to make a concrete mixture.

A new mixture is created using 2 times as much sand and 3 times as much cement as in the original mixture. What is the ratio of the weight of sand to the weight of cement in the new concrete mixture?

A) 2 to 3
B) 3 to 2
C) 5 to 2
D) 5 to 3

x=12 units bd= 10 units

step-by-step explanation:

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)

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3