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tia_tia [17]
3 years ago
5

Dave ordered dinner for a party of 10 people. Three people ordered the $4.75 chicken dinner, two people ordered the $4.95 fish d

inner, and five had the beef dinner at a cost of $6.75 each. what was the average cost of each dinner at Dave's party?
Mathematics
1 answer:
postnew [5]3 years ago
7 0

Answer:

The average cost of each dinner at Dave's party is <u>$5.79</u>.

Step-by-step explanation:

Given:

Dave ordered dinner for a party of 10 people.

Three people ordered the $4.75 chicken dinner, two people ordered the $4.95 fish dinner, and five had the beef dinner at a cost of $6.75 each.

Now, to find the average cost of each dinner at Dave's party.

So, we get the total amount for the dinner:

Three people ordered the $4.75 chicken dinner.

4.75\times 3=14.25

Two people ordered the $4.95 fish dinner.

4.95\times 2=9.90

Five had the beef dinner at a cost of $6.75.

6.75\times 5=33.75

Total amount of dinner = 14.25+9.90+33.75=\$57.90.

Now, to get the average cost of each dinner of 10 people we divide the total amount of dinner by 10:

57.90\div 10

=\$5.79.

Therefore, the average cost of each dinner at Dave's party is $5.79.

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lapo4ka [179]

Answer:

Slope=  

2.000

2.000

​  

=1.000

x−intercept=  

−1

1

​  

=−1.00000

y−intercept=  

1

1

​  

=1.00000

Step-by-step explanation:

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    y-(x+1)=0  

STEP

1

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Equation of a Straight Line

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Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

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b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  y-x-1  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 1/1 so this line "cuts" the y axis at y= 1.00000

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Calculate the X-Intercept :

When y = 0 the value of x is 1/-1 Our line therefore "cuts" the x axis at x=-1.00000

 x-intercept = 1/-1  = -1.00000  

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 1.000 and for x=2.000, the value of y is 3.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 3.000 - 1.000 = 2.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

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Geometric figure: Straight Line

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2. x-intercept = 1/-1 = -1.00000

3.  y-intercept = 1/1 = 1.00000

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Answer:

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6 0
2 years ago
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azamat
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jarptica [38.1K]
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Using the rule that negative times negative is a positive value, it is impossible to square a real numbered value and get a negative result. 

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3 years ago
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