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belka [17]
3 years ago
12

Can someone help me with this please?

Mathematics
1 answer:
timofeeve [1]3 years ago
5 0

A- pure gold

density =mass/ volume

= 772/40 =19.3 which matches that of gold

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Write the equation of the parabola in vertex form.
givi [52]

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Step-by-step explanation:

Vertex Form Equation:

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vertex: (h, k) which means

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because your vertex is (3, 3).

Your point is (1, -9) which is (x, y).

This means

x = 1

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Now, plug everything into your Vertex Form Equation:

-9 = a(1 - 3)² + 3

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3 years ago
Simplify.
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2 years ago
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A 13ft board is to be cut into three pieces, two equal length ones and the third 9in shorter than each of the other two. If cutt
vaieri [72.5K]

Answer:

The pieces are 55 inches, 55 inches and 46 inches long

Step-by-step explanation:

A 13ft board is to be cut into three pieces consisting of two equal length ones. The third one is 9in shorter than each of the other two.

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x + x + x - 9 = 156

=> 3x = 156 + 9

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Each of the first two pieces are 55 inches long.

The length of the third piece will be:

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4 0
3 years ago
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stiv31 [10]
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3 years ago
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