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ladessa [460]
3 years ago
11

Explain in words how you would evaluate the expression 5.1 + q ÷ 3.4 for q = 28.9

Mathematics
2 answers:
Andrei [34K]3 years ago
5 0
Substitute 28.9 for q
It becomes
5.1 + 28.9 ÷ 3.4
You’ll leave like this since it’s not an equation
statuscvo [17]3 years ago
4 0
You would plug in twenty eight point nine to the q. So it would be five point one plus twenty eight point nine divided by three point four, which equals thirteen point six.
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42 of the 150 employees at Carlo's Car Repair wear contact lenses. What percent of the employees wear contact lenses?
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\frac{42}{150} ÷ 2 = \frac{21}{75}

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\frac{42}{150}= \frac{7}{25}

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3 years ago
Solve the inequality 2x-7>3
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Answer:

x>5

Step-by-step explanation:

2x - 7 > 3

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2x - 7 +7 > 3+7

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Step-by-step explanation:

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3 0
3 years ago
A farmer wants to fence a rectangular area of 72 square feet next to a river. Find the length and width of the rectangle which u
Arlecino [84]

Answer:

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Step-by-step explanation:

The least fence is used when half the total fence is parallel to the river. That is, the shape of the rectangle is twice as long as it is wide.

72 = W(2W)

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12 = 2W . . . .  the length parallel to the river

_____

<em>Development of this relation</em>

Let T represent the total length of the fence for some area A. Then if x is the length along the river, the width is y=(T-x)/2, and the area is ...

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Note that the equation for area is that of a parabola with zeros at x=0 and at x=T. That is, for some fence length T, the area will be a maximum at the vertex of this parabola. That vertex is located halfway between the zeros, at ...

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The corresponding area width (y) is ...

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Equivalently, the fence length T will be a minimum for some area A when x=T/2 and y=T/4. This is the result we used above.

8 0
3 years ago
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