Elena wants to prove that a quadrilateral with 4 right angles must have congruent opposite sides. 1.)Explain to Elena how she can use the fact that all rectangles are parallelograms in her proof.

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Pepe is going to spin the following spinner 800 times. the spinner is divided into equal sections.a. exactly 160 timesb. clost to 160 times but probably not exactly 160 timesc. exactly 640 timesd. close to 640 times but not probably not exactly 640 times. me

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

Find dy/dx using implicit differentiation ln(20+e^xy)=y