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kramer
2 years ago
6

Destiny's class packs school lunches for the local homeless shelter. They pack the same number of lunches each minute. In 6 minu

tes, the class packs 18 lunches.
At this rate, how many lunches does the class pack in 28 minutes?
Mathematics
1 answer:
Leno4ka [110]2 years ago
8 0
Make is a proportion
6/18=28/x
Cross multiply
18•28=6•x
504=6x
x=84
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Which equation represents the graphed function?
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Answer:

y = -1/3x +3

Step-by-step explanation:

First we need to find the slope

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Then we know the y intercept( where it crosses the y axis)

It crosses at y=3

The slope intercept form is

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y = -1/3x +3

5 0
2 years ago
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Cristine's middle school has a total of 900 students and 45 teachers. The local high school has 110 teachers and a student-teach
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Write and solve an equation of ratios:

900 students      45 teachers         
------------------  = -----------------  
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Cross multiplying, we get (900)(110) / 45, or

                                                                 
so x = # of students in the high school = 2200   (answer)
                                                                    
8 0
2 years ago
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A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.1%, 3.2%
defon
Error = 1/2(Maximum range - Minimum range) = 1/2(3.2-1.1) = % = 0.0105

If p is the point estimator;

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2 years ago
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What value for c will make the expression a perfect square trinomial? x2 – 7x + c negative StartFraction 49 Over 4 EndFraction n
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Step-by-step explanation:

You can find the value of "c" that will make it a perfect square trinomial by Completing the square.

Given the following expression provided in the exercise:

x^2 - 7x + c

You can notice that it is written in this form:

ax^2-bx+c

Then, you can identify that the coefficient "b" is:

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Since to complete the square you must add and subtract the half of square of coefficient "b", you can conclude that:

c=(\frac{b}{2})^2

Therefore, substituting "b" into c=(\frac{b}{2})^2, you get:

c=(\frac{-7}{2})^2\\\\c=\frac{49}{4}

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2 years ago
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on monday, it took 3 builders 5 1/2 hours to build a wall. an identical wall needs to be built on tuesday and 5 builders are ava
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Answer:

£29.37

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→ First step is to find the amount of hours it takes for 5 builders

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→ Now we know how long 5 builder takes we need to multiply the hourly rate by their time worked

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2 years ago
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