Answer:
12,000psi
Step-by-step explanation:
Given the 7 days strength of a concrete to be 3000psi, to calculate the estimated mean28-day strength of this concrete the following equality equation is applied
7 days strength = 3000psi
28days strength = y
To get y, we will Cross multiply
7 × y = 28×3000
7y = 28×3000
7y = 84000
Divide both sides by 7
7y/7 = 84000/7
y = 12000
hence the estimated mean 28-day strength of this concrete is 12,000psi
Answer:
18
Step-by-step explanation:
3^4=9*9=81
14-5=9
81/9=9
9*2=18
He gets 12$/hr so
114/12=9.5 you can check my multiplying 12 and 9.5 which is 114 so H=9.5 or 9hr30min
Answer:
Root( c square -9)
Step-by-step explanation:
The answer u have is the answer for a^2
