The cost of a pearl $C is directly proportional to the square of its mass , m grams. given that a pearl of mass 10g cost $240 find the cost of a pearl of mass 25g​

Step-by-step explanation:

doing with the ratio method

25 x

10 240

x=25×240÷10

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

given hc ∥ gd.¯¯¯¯¯¯which statement is true

step-by-step explanation:

∠cbe and ∠deb are same-side interior angles