High School

The United States won 104 gold [tex]\((g)\)[/tex], silver [tex]\((s)\)[/tex], and bronze [tex]\((b)\)[/tex] medals in the 2012 Summer Olympics.

a. Select the linear equation in standard form for three unknowns.
b. The United States won 46 gold medals and the same number of silver and bronze medals. Select the relationship between the number of silver to bronze medals in an equation of two unknowns.
c. With the information given in b, solve the linear equation in a for the number of gold, silver, and bronze medals won.

Options:
a. [tex]\(g + s + b = 104\)[/tex]
b. [tex]\(g = 29, \quad s = 46, \quad b = 29\)[/tex]
c. [tex]\(g = b\)[/tex]
d. [tex]\(s = b\)[/tex]
e. [tex]\(g = 46, \quad s = 29, \quad b = 29\)[/tex]
f. [tex]\(g + s + b = 100\)[/tex]

Answer :

Sure, let's go through the solution step-by-step:

a. Linear Equation in Standard Form for Three Unknowns

We are told that the United States won a total of 104 gold, silver, and bronze medals in the 2012 Summer Olympics. This can be represented by the linear equation:

[tex]\[ g + s + b = 104 \][/tex]

where [tex]\( g \)[/tex] is the number of gold medals, [tex]\( s \)[/tex] is the number of silver medals, and [tex]\( b \)[/tex] is the number of bronze medals.

b. Relationship Between the Number of Silver and Bronze Medals

We are given in part (b) of the problem that the United States won 46 gold medals, and the same number of silver and bronze medals. This implies that the number of silver medals [tex]\( s \)[/tex] is equal to the number of bronze medals [tex]\( b \)[/tex]. Therefore, the relationship can be expressed as:

[tex]\[ s = b \][/tex]

c. Solving the Linear Equation

Given that there are 46 gold medals and [tex]\( s = b \)[/tex], we use this information to solve for the number of silver and bronze medals:

1. Substitute the gold medals into the equation from part (a): [tex]\( g = 46 \)[/tex].

2. The equation becomes [tex]\( 46 + s + b = 104 \)[/tex].

3. Since [tex]\( s = b \)[/tex], we can replace [tex]\( b \)[/tex] with [tex]\( s \)[/tex] in the equation:

[tex]\[ 46 + s + s = 104 \][/tex]

4. Simplify the equation:

[tex]\[ 46 + 2s = 104 \][/tex]

5. Solve for [tex]\( s \)[/tex]:

[tex]\[ 2s = 104 - 46 \][/tex]
[tex]\[ 2s = 58 \][/tex]
[tex]\[ s = 29 \][/tex]

6. Since [tex]\( s = b \)[/tex], we also have [tex]\( b = 29 \)[/tex].

So, the final medal count is:

- Gold medals, [tex]\( g = 46 \)[/tex]
- Silver medals, [tex]\( s = 29 \)[/tex]
- Bronze medals, [tex]\( b = 29 \)[/tex]

This gives us the complete solution for the number of each type of medal won by the United States.

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