A. \(\left\{ { \pm 5; \pm \dfrac{3}{2}} \right\}\)
B. \(\left\{ { - 25;\dfrac{9}{4}} \right\}\)
C. \(\left\{ { \pm \dfrac{3}{2}} \right\}\)
D. \(\left\{ { - 5;\dfrac{3}{2}} \right\}\)
A. \(x \le 4\)
B. \(x \ge 4\)
C. \(x \le - 4\)
D. \(x \ge - 4\)
A. \(\dfrac{{MN}}{{AB}} = 9\)
B. \(\dfrac{{MN}}{{AB}} = 3\)
C. \(\dfrac{{MN}}{{AB}} = \dfrac{1}{9}\)
D. \(\dfrac{{MN}}{{AB}} = \dfrac{1}{3}\)
A. \(10cm\)
B. \(\dfrac{{128}}{5}cm\)
C. \(\dfrac{1}{{10}}cm\)
D. \(\dfrac{{45}}{2}cm\)
A. \(\left\{ { - 5;3} \right\}\)
B. \(\left\{ {5;\frac{{ - 1}}{3}} \right\}\)
C. \(\left\{ {\frac{1}{3}; - 5} \right\}\)
D. \(\left\{ { - 3;5} \right\}\)
A. \(x = 0\)
B. \(x = 1\)
C. \(x = 2\)
D. vô nghiệm
A. \(x = \frac{4}{7}\)
B. \(x = \frac{7}{4}\)
C. \(x = - \frac{4}{7}\)
D. \(x = - \frac{7}{4}\)
A. 20 km
B. 25 km
C. 30 km
D. 35 km
A. \(2\)
B. \(4\)
C. \(5\)
D. \(3\)
A. \(S = \left\{ {x\,|\,x < \frac{{18}}{7}} \right\}.\)
B. \(S = \left\{ {x\,|\,x > \frac{7}{{18}}} \right\}.\)
C. \(S = \left\{ {x\,|\,x > \frac{{18}}{7}} \right\}.\)
D. \(S = \left\{ {x\,|\,x < \frac{7}{{18}}} \right\}.\)
A. \(S = \left\{ 0 \right\}.\)
B. \(S = \left\{ 1 \right\}.\)
C. \(S = \left\{ 2 \right\}.\)
D. \(S = \left\{ { - 1} \right\}.\)
A. \(x \in \left\{ {\frac{{ - 13}}{4};\frac{9}{2}} \right\}\)
B. \(x \in \left\{ {\frac{{ - 13}}{4};\frac{{ - 9}}{2}} \right\}\)
C. \(x \in \left\{ {\frac{{13}}{4};\frac{9}{2}} \right\}\)
D. \(x \in \left\{ {\frac{{13}}{4};\frac{{ - 9}}{2}} \right\}\)
A. \(7\) và \(42\)
B. \(6\) và \(36\)
C. \(8\) và \(48\)
D. \(5\) và \(30\)
A. \(5760\,\,\left( {c{m^3}} \right)\)
B. \(5670\,\,\left( {c{m^3}} \right)\)
C. \(5600\,\,\left( {c{m^3}} \right)\)
D. \(5560\,\,\left( {c{m^3}} \right)\)
A. \(M = 1\)
B. \(M = \frac{1}{2}\)
C. \(M = \frac{1}{3}\)
D. \(M = \frac{1}{4}\)
A. \(1\)
B. \(8\)
C. \(9\)
D. \(24\)
A. \(S = \left\{ {3;\dfrac{3}{2}} \right\}\)
B. \(S = \left\{ { - 3;\dfrac{3}{2}} \right\}\)
C. \(S = \left\{ {3; - \dfrac{3}{2}} \right\}\)
D. \(S = \left\{ { - 3; - \dfrac{3}{2}} \right\}\)
A. \(x \ne - 1\)
B. \(x \ne 0\)
C. \(x \ne 1\) hoặc \(x \ne 0\)
D. \(x \ne - 1\) và \(x \ne 0\)
A. \(x > - \dfrac{8}{3}\)
B. \(x < \dfrac{8}{3}\)
C. \(x > \dfrac{8}{3}\)
D. \(x < - \dfrac{8}{3}\)
A. \(2x - 3\)
B. \(2x + 3\)
C. \(5\)
D. \( - 3\)
A. \(x = 6\)
B. \(x = 5\)
C. \(x = 4\)
D. \(x = 3\)
A. \(\dfrac{{BD}}{{DC}} = \dfrac{3}{8}\)
B. \(\dfrac{{BD}}{{DC}} = \dfrac{8}{3}\)
C. \(\dfrac{{BD}}{{DC}} = \dfrac{3}{5}\)
D. \(\dfrac{{BD}}{{DC}} = \dfrac{5}{3}\)
A. \(125\,\,c{m^2}\)
B. \(25\,\,c{m^3}\)
C. \(25\,\,c{m^2}\)
D. \(125\,\,c{m^3}\)
A. \(S = \left\{ {x \in \mathbb{R}|\,x \ge \frac{7}{5}} \right\}.\)
B. \(S = \left\{ {x \in \mathbb{R}|\,x \le \frac{5}{7}} \right\}.\)
C. \(S = \left\{ {x \in \mathbb{R}|\,x \le \frac{7}{5}} \right\}.\)
D. \(S = \left\{ {x \in \mathbb{R}|\,x \ge \frac{5}{7}} \right\}.\)
A. \(3000\)
B. \(3120\)
C. \(3210\)
D. \(3200\)
A. \(\left( {x,y} \right) = \left( { - 4;3} \right)\)
B. \(\left( {x,y} \right) = \left( {4; - 3} \right)\)
C. \(\left( {x,y} \right) = \left( {3; - 4} \right)\)
D. \(\left( {x,y} \right) = \left( { - 3;4} \right)\)
A. \(S = \left\{ { - 2} \right\}\)
B. \(S = \left\{ 2 \right\}\)
C. \(S = \left\{ { \pm 2} \right\}\)
D. \(S = \left\{ {2; - 4} \right\}\)
A. \(0x + 7 \ge 0\)
B. \(\left( {x - 1} \right).\left( {x + 2} \right) \le 0\)
C. \(3 - x \ge 0\)
D. \({x^2} + 2 < 0\)
A. \(\frac{{20}}{3}\)
B. \(\frac{2}{3}\)
C. \(\frac{3}{{20}}\)
D. \(\frac{3}{2}\)
A. \(216c{m^2}\)
B. \(36c{m^2}\)
C. \(72c{m^2}\)
D. \(144c{m^2}\)
A. \(S = \left\{ {x \in \mathbb{R}\,|\,x > 5} \right\}.\)
B. \(S = \left\{ {x \in \mathbb{R}\,|\,x > 3} \right\}.\)
C. \(S = \left\{ {x \in \mathbb{R}\,|\,x < 3} \right\}.\)
D. \(S = \left\{ {x \in \mathbb{R}\,|\,x < 5} \right\}.\)
A. \(1\)
B. \(\frac{1}{2}\)
C. \(\frac{1}{3}\)
D. \(\frac{1}{4}\)
A. 80 tấn
B. 90 tấn
C. 100 tấn
D. 110 tấn
A. \(S = \left\{ {\frac{{13}}{{20}}} \right\}.\)
B. \(S = \left\{ { - \frac{{13}}{{20}}} \right\}.\)
C. \(S = \left\{ { - \frac{{27}}{{20}}} \right\}.\)
D. \(S = \left\{ {\frac{{27}}{{20}}} \right\}.\)
A. \(S = \left\{ {\frac{5}{2}; - 2} \right\}.\)
B. \(S = \left\{ { - \frac{5}{2};2} \right\}.\)
C. \(S = \left\{ { - \frac{5}{2}; - 2} \right\}.\)
D. \(S = \left\{ {\frac{5}{2};2} \right\}.\)
A. \(S = \left\{ {\frac{1}{4}} \right\}.\)
B. \(S = \left\{ { - 4} \right\}.\)
C. \(S = \left\{ 4 \right\}.\)
D. \(S = \left\{ { - \frac{1}{4}} \right\}.\)
A. \(S = \left\{ {x|x > 41} \right\}.\)
B. \(S = \left\{ {x|x < 40} \right\}.\)
C. \(S = \left\{ {x|x < 41} \right\}.\)
D. \(S = \left\{ {x|x > 40} \right\}.\)
A. \(S = \left\{ {x|x \ge 2} \right\}.\)
B. \(S = \left\{ {x|x \le 2} \right\}.\)
C. \(S = \left\{ {x|x \le - 2} \right\}.\)
D. \(S = \left\{ {x|x \ge - 2} \right\}.\)
A. 700 ha
B. 745 ha
C. 750 ha
D. 765 ha
A. \(2020\)
B. \(2000\)
C. \(2200\)
D. \(2002\)
Lời giải có ở chi tiết câu hỏi nhé! (click chuột vào câu hỏi).
Copyright © 2021 HOCTAPSGK