10.在△ABC中,∠A=$\frac{1}{3}$∠B=$\frac{1}{5}$∠C,则△ABC是( )
| A. | 钝角三角形 | B. | 直角三角形 | C. | 锐角三角形 | D. | 无法确定 |
7.分式$\frac{1}{x-1}$有意义,则x的值为( )
| A. | x=1 | B. | x≠0 | C. | x≠1 | D. | x=0 |
6.下列式子中,y是x的反比例函数的是( )
0 294411 294419 294425 294429 294435 294437 294441 294447 294449 294455 294461 294465 294467 294471 294477 294479 294485 294489 294491 294495 294497 294501 294503 294505 294506 294507 294509 294510 294511 294513 294515 294519 294521 294525 294527 294531 294537 294539 294545 294549 294551 294555 294561 294567 294569 294575 294579 294581 294587 294591 294597 294605 366461
| A. | y=$\frac{1}{{x}^{2}}$ | B. | y=$\frac{x}{2}$ | C. | y=$\frac{x}{x+1}$ | D. | xy=1 |