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seraphim [82]
3 years ago
5

Y=2x X+Y=-9 What's the answer ?

Mathematics
1 answer:
Elan Coil [88]3 years ago
3 0
y=2x\\
x+y=-9\\\\
x+2x=-9\\
3x=-9\\
x=-3\\\\
y=2\cdot(-3)\\
y=-6\\\\
\boxed{(x,y)=(-3,-6)}
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in chemical formulas, there are often subscript numbers (such as the 2 in h2o, or the 6, 12, and 6 in c6h12o6). what do these su
Gnesinka [82]

In a Chemical formula,  Subscript figures tell us how numerous of the element to their upper-left there are in the patch.

What is a chemical formula?

  • In chemistry, a chemical formula is a way of presenting information about the chemical proportions of titles that constitute a particular chemical emulsion or patch, using chemical element symbols, figures, and occasionally also other symbols, similar as hiatuses, dashes, classes, commas, and plus() and disadvantage( −) signs.
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  • A chemical formula may indicate certain simple chemical structures, it isn't the same as a full chemical structural formula.

The subscript number indicates the total number of titles of an element present in a patch.

While witting a chemical formula, first we've to write the symbol of an element and also write the number at the bottom of the symbol.

For illustration,

C_6H_{12}O_6 is the chemical formula of the glucose patch. The glucose patch is made up of six carbon titles, twelve hydrogen titles, and 6 oxygen titles.

The number 6 of the carbon snippet is written after and at the bottom ( lower- right) of the symbol of carbon element (C). also, the number 12 is written lower-right of the symbol of hydrogen element (H), and the number 6 is written lower-right of the symbol of oxygen element( O).

thus, the subscript figures tell us how numerous of the element to their upper-left there are in the patch.

Learn more about  subscript here:

brainly.com/question/18452587

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4 0
1 year ago
What are the dimensions of the largest 30-60-90 triangle that will fit inside a 45-45-90 triangle with leg length 14in.? Sketch
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The triangle lengths would be 14√2, 7√2 and 7√6.

The sides of a 45-45-90 triangle can be listed as t, t and t√2.  The legs are each 14, so the hypotenuse will be 14√2.

This will also be the longest side of the 30-60-90 triangle.  Its sides can be listed as t, 2t and t√3.  Since the hypotenuse is the longest side, we have:

2t=14√2

Dividing both sides by 2, we have:
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t = 7√2

The remaining side will be t√3:

t = 7√2
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5 0
3 years ago
Wikipedia states the following about Anchorage, Alaska: “The city constitutes more than 40 percent of the state’s total populati
lilavasa [31]

Answer:

149 people/ sq. miles

Step-by-step explanation:

Anchorage is a city in country Alaska.

Based on 2010 data, Anchorage has a population of 291826 people and the area coverage of the city is 1961.1 square miles.

We are asked to determine the population density of Anchorage city.

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2 years ago
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