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slamgirl [31]
3 years ago
7

Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2 + 1 inches, and

its perimeter is 4(2x2 + 1) inches. If x = 3.5, how much ribbon does she need?
Mathematics
2 answers:
Rasek [7]3 years ago
8 0
19.25 inches I think i.t is

Margaret [11]3 years ago
6 0

Answer it is 102 i just took test

Step-by-step explanation:

102 on ed


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The equation x2 16 + y2 9 = 1 defines an ellipse, which is graphed above. in this excercise we will approximate the area of this
Citrus2011 [14]
(a) 4 
(b) y = sqrt(9 - (9/16)x^2)  
The best guess to the formula using knowledge of the general formula for an ellipse is: 
x^2/16 + y^2/9 = 1  
(a). An ellipse is reflectively symmetrical across both the major and minor axis. So if you can get the area of the ellipse in a quadrant, then multiplying that area by 4 would give the total area of the ellipse. So the factor of 4 is correct. 
 (b). The general equation for an ellipse is not suitable for a general function since it returns 2 y values for every x value. But if we restrict ourselves to just the positive value of a square root, that problem is easy to solve. So let's do so:
 x^2/16 + y^2/9 = 1
 x^2/16 + y^2/9 - 1 = 0
 x^2/16 - 1 = - y^2/9
 -(9/16)x^2 + 9 = y^2
 9 - (9/16)x^2 = y^2
 sqrt(9 - (9/16)x^2) = y
 y = sqrt(9 - (9/16)x^2)
4 0
3 years ago
Which function will produce the same graph as the function shown below?
pav-90 [236]
I think the correct answer from the choices listed above is option D. The function that will produce the same graph as the function y=(x+1)(x-3) would be <span>y=x^2-2x-3. Both equations are the same. You can confirm it by simplifying the equation. Hope this answers the question.</span>
5 0
3 years ago
Read 2 more answers
QUESTION 2<br>Simplify the following<br>a5×a7​
Kryger [21]

Answer:

a^{12}

Step-by-step explanation:

<em><u>Identity Used </u></em>:   a^x \times a^y = a^{x+ y}

   

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6 0
3 years ago
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Write an algebraic expression for the perimeter of a rectangular garden with a width of 3 metres and a length of 2y metres. Simp
anyanavicka [17]

Answer:

P = 2(2y+3)

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Step-by-step explanation:

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Plug in 6 for y.

P = 24+6

P = 30

5 0
2 years ago
How do you determine whether a sum will be positive, negative, or 0 when adding a positive and a negative integer?
professor190 [17]
If the integers have the same absolute value ... they're the same number
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Example:    (plus) 927 added to (negative) 927  =  zero


If the integers have different absolute values ... they're different numbers with different
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