Collin did the work to see if 10 is a solution to the equation StartFraction r Over 4 EndFraction = 2.5.StartFraction r Over 4 EndFraction = 2.5. StartFraction 10 Over 4 EndFraction = 2.5. 2.5 = 2.5.Is 10 a solution to the equation?Yes, because 10 and 4 are both even. Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true. No, because 10 is not divisable by 4.No, because if you substitute 10 for r in the equation and simplify, you find that the equation is not true.

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

18.75 gallons

step-by-step explanation: