What is the standard form of the number in the calculators display?

2.3e-9
a: 0.23
b: 0.23
c: 2,300,000,000
d: 23,000,000,000

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

Intro biblioteca sunt 462 de carti cu 198 mai putine enciclipedii si cu 47 mai multe dictionare decat enciclopedii cate enciclopedii sunt in biblioteca