Answer:
5
Step-by-step explanation:
-17, -17, -16 ,-9, 3, 7 ,7, 17, 17, 18
median ( middle number): (3+7)/2= 10/2= 5
The only thing that you need to do is Divide -2 on both sides to isolate the M. so 7/-2 M=3.5
Answer:
no entindendol ingels
Step-by-step explanation:
Answer:
added cement = 200 kg
Step-by-step explanation:
Sand = 0.8*1400
Sand = 1120 kg
If 1120 kg of sand represents the total sand in the 8:2 mixture.
We have to create the equation of the 7:3 mixture as follows.
The sand amount continues the same but the total amount of the mixture and cement will change.
0.7*mixture_mass + 0.3*mixture_mass = mixture_mass
By replacing values, we have:
1120 kg + 0.3*(1400 kg + added cement)= 1400 kg + added cement
added cement = 200kg
Answer:
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