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Nana76 [90]
3 years ago
6

The width, w, of a rectangular playground is x+3. The area of the playground is x^3-7x+6. What is an expression for the length o

f the playground?
Mathematics
1 answer:
jeka57 [31]3 years ago
7 0
We know that the area of a rectangle:

A = l * w

Therefore, x³-7x+6 = length * (x+3) 

If we want to find the length, we must get this alone on the right side of the equation.  We can do this by dividing both sides by the width, which we know is x+3.

Thus, an expression for the length is equal to x³-7x-6/(x+3).
You might be interested in
Can someone help me with this prooblem
Scorpion4ik [409]

Answer:

9.85

Step-by-step explanation:

I hate these, LOL

We're going to draw a triangle on the graph paper to solve this. (in theory)

The top point is at 2 on the x axis, and the bottom is at 6. That's a difference of 4. Draw a line from the top dot over 4 spaces, so a line dropped from there could go straight to the bottom dot. We'll call this line/side of the triangle a, and a = 4.

Then we drop the line from there (6, 4) down to the second dot at (6, -5). That line is 9 places long. We'll call this line/side of the triangle b, and b = 9.

(This is so much easier to draw than type, I'll attach a picture).

Then we connect the two dots diagonally to form line/side c of our triangle. This is the length we don't know.

The pythagorean theorem says a^2 + b^2 = c^2

So a = 4, b = 9, c is unknown for our triangle

(4)(4) + (9)(9) = c^2

16 + 81 = 97

The square root of 97 = 9.8488, so if they have you round, I would say 9.85

Sorry if this just confused you more.

5 0
3 years ago
Name the property of multiplication that is shown by the equation 4x· 1 = 4x
Alex_Xolod [135]
Transitive property I believe
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Jen has a checking account balance that is less than -$5. Does she owe more or less than $5? Explain your answer.
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6 0
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Read 2 more answers
1- Emily collected $950 selling Girl Scout cookies all day Saturday. Emily's Troop collected 10 times as much as she did. How mu
VikaD [51]
1. $9500 because 10*950=9500
2. $95 because 950/10=95

( can explain further )
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