Answer:
30 pounds
Step-by-step explanation:
Amount of tin in first alloy + amount of tin in second alloy = amount of tin in mixture
0.15 (20) + 0.10 x = 0.12 (20 + x)
3 + 0.10 x = 2.4 + 0.12 x
0.6 = 0.02 x
x = 30
<span>product of a number and 10: 10n
</span><span>Seven less than the product of a number and 10: 10n - 7
so
</span><span>Seven less than the product of a number and 10 is 50:</span>
10n - 7 = 50
----------------------------
if you need to find the number n then
10n - 7 = 50
10n = 57
n = 57/10
n = 5.7
I would say A I hope this helps
Note:
PEMDAS
Solve the parentheses by multiplying 3:
18 + 3x = 24
Solve for x:
(Subtract 18 from both sides)
3x = 6
(Divide 3 on both sides)
x = 2
Answer:
Area 124 cm^2
Perim:52cm
Step-by-step explanation:
Area:
11*8=88
9*4=36
124
Perim 20+8+11+13=52