NEED HELP ! here is a rectangle with a width x centimetres.
the length of the rectangle is 8 cm longer than the width of the rectangle.
four of these rectangles are used to make an 8-sided shape.
the perimeter of the 8-sided shape is 90 cm.
work out the area of the 8 sided shape
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Question 6 (10 points) ✓ saved what is the center of a circle described by the equation x2 + y2 +10y = -16? . (0,-5) (0,5) (-5,0) (5,0)

Me with this one question, and i'll upvote the brainliest answer

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.