04- (Saresp–2008) Nas Lojas Compre Aqui, um micro-ondas pode ser vendido de duas formas: à vista por R$ 299,00 ou em 12 parcelas iguais de R$ 32,15. As amigas Giovana e Mariana compraram, cada uma, um micro-ondas nessa loja: a primeira, à vista e a segunda, a prazo. Assinale a alternativa que mostra a quantia que Mariana pagou a mais do que Giovana. 2 pontos
a) R$ 22,50.
b) R$ 86,80.
c) R$ 129,30.
d) R$ 266,85.
e) Não houve diferença​

Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel

Which angle of rotation is an angle of rotational symmetry for all figures?

Does 9q + 7 also equal 7 + 9q ? (simplifying algebraic expressions)