14 karat gold is 58.3333...% gold
We have 75% gold and 50% gold and we need to make 200 grams of 58.3333...% gold.
A) x + y = 200
B) .75x + .50y = ( (14/24) * 200)
We multiply equation B) by -1.3333... and get
B) -x -.6666...y = -155.5555... then adding A)
A) x + y = 200 we get
.3333...y = 44.4444...
y = 133.3333... grams 12 karat gold
x = 66.6666... grams 18 karat gold
Double-Checking the answer
133.3333... * .5 = 66.6666...
66.6666 * .75 = 50.0000...
Concentration of final solution = (66.6666... + 50) / 200 = 58.3333...% which is 14 karat gold
The angle RSV would be 42°
Answer:
last one
Step-by-step explanation: 25 divided by four is 6.25
<u>Answer:
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The standard form of
is 0.0000002
<u>Solution:
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We have to write
in standard form.

By dividing 3.6 by 1.8 we get “2”, hence the above equation becomes,

We know that 
Therefore the above equation becomes,


since the exponent of 10 is negative , therefore 7 zeros are written on the left hand side of the number.
= 0.0000002
Hence the standard form of
is 0.0000002
378
Because a multiple of both 7 and 3 is 21, and 21*18=378.