Answer:
c + d = 400
0.2c + 0.5d = 156
Step-by-step explanation:
Let
c = number of liters of 20% acid solution
d = number of liters of 50% acid solution.
c + d = 400 (1)
0.2c + 0.5d = 400(0.39)
0.2c + 0.5d = 156 (2)
From (1)
c = 400 - d
Substitute c = 400 - d into (2)
0.2c + 0.5d = 156 (2)
0.2(400 - d) + 0.5d = 156
80 - 0.2d + 0.5d = 156
- 0.2d + 0.5d = 156 - 80
0.3d = 76
d = 76/0.3
d = 253.33 liters
Substitute d = 253.33 into (1)
c + d = 400
c + 253.33 = 400
c = 400 - 253.33
c = 146.67 liters
Answer:
188 units cubed
Step-by-step explanation:
Answer:
\text{Compounded Quarterly:}
Compounded Quarterly:
A=P\left(1+\frac{r}{n}\right)^{nt}
A=P(1+
n
r
)
nt
Compound interest formula
P=3500\hspace{35px}r=0.035\hspace{35px}t=19\hspace{35px}n=4
P=3500r=0.035t=19n=4
Given values
A=3500\left(1+\frac{0.035}{4}\right)^{4(19)}
A=3500(1+
4
0.035
)
4(19)
Plug in values
A=3500(1.00875)^{76}
A=3500(1.00875)
76
Simplify
A=6786.05963486
A=6786.05963486
Use calculator
A\approx 6800
<h2>A≈6800</h2>
Step-by-step explanation:
<span>y=7-2x
</span><span>y = -2x + 7 so now we have slope m = -2, b = 7
pass point </span><span>(-5/2,y) then
y = mx + b
y =-2(-5/2) + 7
y = 5 + 7
y = 12
answer : </span><span>ordered pair (-5/2,12)</span>
