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barxatty [35]
2 years ago
14

A dental filling is nine carats what percent of the filling is gold?

Mathematics
1 answer:
N76 [4]2 years ago
3 0

Answer:

How much gold is in a crown tooth?

On average, the typical yellow-colored gold dental crown is around 16 karat (67% gold). Besides gold, this type of alloy may also contain amounts of palladium, platinum and silver. Dentists sometimes use silver-colored alloys, “White gold” dental alloys, to make restorations.

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Graph the equation to solve the system. y=2x+7 1/2y=x+7/2
vlabodo [156]

Given equation is y=2x+7 and \frac{1}{2}y=x+\frac{7}{2}

Let's simplify the 2nd equation \frac{1}{2}y=x+\frac{7}{2} before we can start graph so that calculation will be easy

\frac{1}{2}y=x+\frac{7}{2}

multiply both sides by 2 to cancel out fractions

2*\frac{1}{2}y=2*x+2*\frac{7}{2}

y=2x+7

which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.

y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.


3 0
3 years ago
What is the volume of the water contained in the cylinder?
Margarita [4]

Answer:

Vf = 118.365 m3

Step-by-step explanation:

Vcil = Pi*[(20)^2]*(100=

Vcil = 125.600 m3

Vesf = (4/3)*Pi*(12)^3

Vesf = 7235 m3

Then

Vf = Vci - Vesf

Vf = 125.600 - 7235

Vf = 118365 m3

Best regards

3 0
3 years ago
Choose the correct answer.<br>1. Choose the two figures that are<br>congruent<br>A<br>B<br>C<br>D​
ra1l [238]
Where is the photo? to answer it
3 0
3 years ago
Read 2 more answers
A marathon is 26.2 miles long. If a runner can run 7.5 miles in 60 minutes, how many minutes will it take to run the full marath
olganol [36]
210 I think because theres 3.4 of 60minutes/ hrs and 3.4 times 60 is 209.6 and it said round to the nearest minute which is 9 so 210
5 0
2 years ago
Find the measure of the exterior angle.
Marysya12 [62]

Answer:

The exterior angle is 77

Step-by-step explanation:

The measure of the exterior angle of a triangle is equal to the sum of the two opposite interior angles.

2x+11 = x +44

First we need to find x

Subtract x from each side

2x+11-x = x+44

x +11 = 44

Subtract 11 from each side

x+11-11 = 44-11

x =33

Now we can find the exterior angle

2x+11 = 2(33)+11 = 66+11 = 77

The exterior angle is 77

5 0
1 year ago
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