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NeX [460]
4 years ago
6

A rectangle has a length of x+7 and a width of x-3. write and expression that represents the AREA of the rectangle.

Mathematics
1 answer:
Lyrx [107]4 years ago
6 0

Answer:

A = x^2 + 4x -21

Step-by-step explanation:

L = x+7

W = x-3

A = L*W

A = (x+7)(x-3)

A = x^2 + 4x - 21

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If (x + 8) is a factor of f(x), which of the following must be true?
Sedaia [141]

Answer:

  • f(-8) = 0

Step-by-step explanation:

If (x+8) is a factor of f(x), then for some expression p, we have ...

  f(x) = (x+8)p

Evaluated at x=-8, this gives ...

  f(-8) = (-8+8)p = 0p

  f(-8) = 0 . . . . must be true

_____

Similarly, f(8) = (8+8)p = 16p. This may or may not be zero, depending on the factors of p. The only offered statement that <em>must</em> be true is the one shown above.

6 0
3 years ago
Read 2 more answers
HELPPP????
kkurt [141]

Answer:

How are this equation and the equation of the line related? They both use the same variable to put it together. What does this relationship mean about any triangle created using this line? They are both put together so it would fit on the graph.

Step-by-step explanation:

The graph shows 1:2, where it's at. And they fit well because the numbers are next to each other. On the y axis, it's 2, right? And on the x axis it's 1, right? So it's 1:2 if that's what you're asking?

6 0
3 years ago
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How much should be added to 58.4 to makes 400?​
Ket [755]

Answer:

341.6

Step-by-step explanation:

400-58.4=341.6

6 0
3 years ago
What is 18 divided by 0.2 and how?
kati45 [8]
0.2 is the same as 2/10

18/(2/10)

As you may have learned in school, when you divide a fraction, you flip the fraction in the denominator, and change it to multiplication

18/(2/10) becomes 18 x (10/2)

multiply normally

18 x 10 = 180

divide to find answer

180/2 = 90

90 is your answer

hope this helps

Remember, when you meet this problem, flip the second fraction, and change the division sign into multiplication. (always second, never first (if first is a fraction)).
5 0
3 years ago
Which relationship describes angles 1 and 2? Select each correct answer. A)adjacent angles
Talja [164]
Hey there!

As you can see, they are lying on the same line.

When two angles are on the same straight line, they are adjacent. 

Adjacent angles 
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Adjacent angles= 180 degrees Supplementary= 180 degrees

They are choices "A" and "B". 

I hope this helps!
~kaikers
6 0
3 years ago
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