Answer:
Step-by-step explanation:
You need to use Pythagorean's Theorem to find the height of the pole. Namely,
and
and
and
so
pole = 112 cm
Answer:
3 oz
Step-by-step explanation:
Let x represent the number of oz. of the medal with 40% gold:
Set up an equation and solve for x:
0.4x + 7(0.9) = 0.75(x + 7)
0.4x + 6.3 = 0.75x + 5.25
6.3 = 0.35x + 5.25
1.05 = 0.35x
3 = x
So, you will need 3 oz. of the metal with 40% gold
Answer:
Step-by-step explanation:
- Initial value = $500000
- Depreciation rate = 5.41% each year
- Target value = 1/2*$500000 = $250000
- Number of years = x
Depreciation can be expressed as function:
- d(x) = 500000*((100 - 5.41)/100)^x
- d(x) = 500000*0.9459^x
Having the final value of $250000, we can find x:
- 250000 = 500000*0.9459^x
- 0.5 = 0.9459^x
- log 0.5 = x log 0.9459
- x = log 0.5 / log 0.9459
- x = 12.46 ≈ 13 years rounded
Answer:
k
Sktep-by-step explanation:
k
3n/2-n/4=7n+4/12
12 (3n/2-n/4=7n+4/12) factored in 12 to both sides to get rid of fractions
12 (3n/2)-12 (n/4)=12 (7n)+12 (4/12) distributive power
36/2n-12/4n=84n+48/12
18n-3n=84n+4 simplified
15n=84n+4
15n-84n=84n-84n+4 addition property
-69n=4
-69/-69n=-4/69 division property
n=-4/69
Solution : n=-4/69