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2 years ago

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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Sam went 300 feet below sea level. Ken is at an elevation of 100 feet. Write an inequality to compare their location

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2 years ago

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djverab [1.8K]

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2 years ago

Find the zeroes of the following equation:

weqwewe [10]

Answer: $\bold{x=\dfrac{1\pm \sqrt5}{2}}$

both zeros are irrational numbers

<u>Step-by-step explanation:</u>

Note: The question would have made more sense if if it was 2/x = x - 1 but I will answer it as written.

$\dfrac{1}{x}=x-1\qquad \text{Restriction: }x\neq 0\\\\\\\text{Cross multiply, simplify, and set equal to zero:}\\1=x(x-1)\\\\1=x^2-x\\\\0=x^2-x-1\\\\\\\text{This is not factorable so you will need to use Quadratic Formula:}\\\\x=\dfrac{-(-1)\pm \sqrt{(-1)^2-4(1)(-1)}}{2(1)}\\\\\\x=\dfrac{1\pm \sqrt5}{2}$

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2 years ago

The center of a circle is at the onigin on a coordinate grd. The vertex of a parabola that opens upward is at (0, 9). If the

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2 years ago

Jamya is making a rectangular blanket. The length of the blanket is 10inches greater than it's worth, W, in inches. Write the fu

natta225 [31]

Answer: (w² + 10)inches²

Step-by-step explanation:

Since the width of the rectangular blanket is given as w and the length of the blanket is 10inches greater than it's width, therefore the length will be:

= 10 + w.

Therefore,

length = 10 + w

width = w

Area = length × width

Area = (10 + w) × w

Area = 10w + w²

Therefore, the area of the blanket will be (w² + 10)inches².

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2 years ago

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

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