Answer:
20 liters of the 40% solution
60-20=40 liters of the 70% solution
Step-by-step explanation:
40%x+70%(60-x)=60%(60)
0.4x+0.7(60-x)=0.6(60)
0.4x+42-0.7x=36
-0.3x+42=36
-0.3x=-42+36
-0.3x=-6
0.3x=6
3x=60
x=60/3
x=20 liters of the 40% solution
60-20=40 liters of the 70% solution
check: 0.4*20=8
0.7*40=28
8+28=36 and 0.6*60=36 also
9x=6, so the number is 2/3.
Answer:
- B) 48
- D) 81
- A) 11
- B) -81
- -246
- C) 5
- A) 19 9/25
- D) 11
- A) 48
- D) m-c/-b =a
Step-by-step explanation:
comment if you want the explanation, but you said you wanted it fast and it would take me like 10 minutes to right it all out
Ok so I'll demonstrate in programming language python.
import math
def circle():
r = float(input("Enter r: "))
a = math.pi * r ** 2
print("Area of circle with r = {0} is {1
}cm2".format(str(r), str(a))
circle()
Answer:
x = -56
Step-by-step explanation:
x/7 = -8
Multiply each side by 7
x/7 *7 = -8*7
x = -56
