Answer:
$455.5
Step-by-step explanation:
200+(0.7x365)
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:
y = -2x - 12
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
=> -5 + √25 - 4(2)(3) / 4
=> -5 + 1 / 4
=> -4 / 4
=> -1
