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Morgarella [4.7K]
3 years ago
9

Explain how to graph the following function and determine its domain and range y=-x^2+4-7 ​

Mathematics
1 answer:
Bad White [126]3 years ago
3 0

Answer:

Domain is: ( − ∞ , ∞ ) ,  { x | x ∈ R }

range is: ( − ∞ , − 3 ]  ,  { y | y ≤ − 3 }

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Step-by-step explanation:

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Brand X costs $1.56 for 12 ounces. Brand Y costs 2 cents more per ounce. What is the cost of 15 ounces of brand Y?
hichkok12 [17]

Brand X costs $1.56 for 12 ounces

Brand X: cost of each ounce = $1.56 / 12 = $0.13

Brand Y costs 2 cents more per ounce, so the cost of brand Y per ounce= $0.13 + $0.02 = $0.15

The cost of 15 ounces of brand Y = $0.15 x 15 = $2.25

Answer

$2.25

7 0
4 years ago
If ∆GFE ~ ∆CBE, find the value of x
saw5 [17]
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4 0
3 years ago
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Solve this: k/3 = -4​
Veseljchak [2.6K]

Step-by-step explanation:

  • k/3= -4
  • k= -4×3
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<h2>stay safe healthy and happy.</h2>
6 0
3 years ago
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The area of a rectangular wall of a barn is 168 square feet. Its length is 10 feet longer than twice its width. Find the length
Katen [24]
So area is 168 sq ft

That means that length * width = 168 sq ft
Since length  = 10 + 2 w

we get (10+2w)(w)  = 168

Multiply it out and you get 2w^2 + 10w - 168 = 0

This is a quadratic equation. You can use the formula here, but i'll just tell you the answer

w = -12,  or 7
since it can't equal -12 (ever heard of a barn with a length of -12?), you figure out the answer is 7.

If the width is 7, then the length is 10+2(7) = 24.

Have a nice day!
8 0
3 years ago
what type of decimal expansion does a rational number has how can you distinguish it from decimal expansion of irrational number
eimsori [14]

Answer:

answer to the second part: A rational number has a finite number of decimal places, but an irrational number decimal places go on forever.

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