3 years ago

How pure is 16-karat gold?

2 answers:

jonny [76]3 years ago

5 0

Answer:

About 67% because karats are on a scale of 1-24 with 24 being pure gold,

so 16/24.

3 0

Answer:

here

Step-by-step explanation:

16 karat gold is 16 parts gold to 8 parts other material for a pure gold percentage of 67%.

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Yanka [14]

Answer:

132

Step-by-step explanation:

$\frac{x}{600} = \frac{22}{100}$

X = 132

5 0

3 years ago

nadezda [96]

Answer:

$\frac{5}{2}$

Step-by-step explanation:

First, add two to both sides to get $9^{x-1}=27$

There are two ways to solve this from here

Think about what power you would have to raise 9 to to get to 27. $9^{\frac{1}{2}}$ = 3 and $3^3=27$ . So, multiplying the powers (because it is a power to a power) you get $9^{\frac{3}{2}}=27$ . This means that $x - 1 = \frac{3}{2}$ or x = $\frac{5}{2}$ .
Take the log of both sides.