Mathway | Popular Problems

Popular Problems

Rank	Topic	Problem	Formatted Problem
148401	Find the Inverse	[[3,6],[1,2]]	$[\begin{array}{c} 3 & 6 \\ 1 & 2 \end{array}]$
148402	Find the Inverse	[[12,9],[5,2]]	$[\begin{array}{c} 12 & 9 \\ 5 & 2 \end{array}]$
148403	Find the Inverse	[[-2,1],[1.5,-0.5]]	$[\begin{array}{c} - 2 & 1 \\ 1.5 & - 0.5 \end{array}]$
148404	Find the Inverse	[[2,-1],[3,4]]	$[\begin{array}{c} 2 & - 1 \\ 3 & 4 \end{array}]$
148405	Find the Inverse	[[1,2],[2,1]]	$[\begin{array}{c} 1 & 2 \\ 2 & 1 \end{array}]$
148406	Find the Inverse	[[1,-1],[2,x^2]]	$[\begin{array}{c} 1 & - 1 \\ 2 & x^{2} \end{array}]$
148407	Find the Inverse	[[1,3],[21,6]]	$[\begin{array}{c} 1 & 3 \\ 21 & 6 \end{array}]$
148408	Find the Inverse	[[31,4],[-5,2]]	$[\begin{array}{c} 31 & 4 \\ - 5 & 2 \end{array}]$
148409	Find the Inverse	[[4,12],[2,6]]	$[\begin{array}{c} 4 & 12 \\ 2 & 6 \end{array}]$
148410	Find the Inverse	[[4,7],[2,6]]	$[\begin{array}{c} 4 & 7 \\ 2 & 6 \end{array}]$
148411	Find the Inverse	[[5,2],[3,-1]]	$[\begin{array}{c} 5 & 2 \\ 3 & - 1 \end{array}]$
148412	Find the Inverse	[[-5,4],[0,4]]	$[\begin{array}{c} - 5 & 4 \\ 0 & 4 \end{array}]$
148413	Find the Inverse	[[5,4],[8,-2]]	$[\begin{array}{c} 5 & 4 \\ 8 & - 2 \end{array}]$
148414	Find the Inverse	[[6,7],[7,8]]	$[\begin{array}{c} 6 & 7 \\ 7 & 8 \end{array}]$
148415	Find the Inverse	[[8,7],[2,6]]	$[\begin{array}{c} 8 & 7 \\ 2 & 6 \end{array}]$
148416	Find the Mean	7 , 10 , 13 , 16	$7$ , $10$ , $13$ , $16$
148417	Find the Mean	67 , 70 , 73 , 68 , 71 , 73 , 74 , 73 , 70	$67$ , $70$ , $73$ , $68$ , $71$ , $73$ , $74$ , $73$ , $70$
148418	Find the Mean	62 , 68 , 56.5 , 47 , 72 , 65 , 78 , 67 , 69.5 , 62.5	$62$ , $68$ , $56.5$ , $47$ , $72$ , $65$ , $78$ , $67$ , $69.5$ , $62.5$
148419	Find the Mean	61 , 68 , 57.5 , 48.5 , 75 , 65 , 80 , 68 , 69 , 63	$61$ , $68$ , $57.5$ , $48.5$ , $75$ , $65$ , $80$ , $68$ , $69$ , $63$
148420	Find the Mean	7.9 , 7 , 7.6 , 4.8 , 7 , 7.1	$7.9$ , $7$ , $7.6$ , $4.8$ , $7$ , $7.1$
148421	Find the Mean	-73 , -44 , -15 , 14	$- 73$ , $- 44$ , $- 15$ , $14$
148422	Find the Mean	4 , 20 , 100 , 500	$4$ , $20$ , $100$ , $500$
148423	Find the Mean	4 , 5 , 6 , 7 , 8 , 9	$4$ , $5$ , $6$ , $7$ , $8$ , $9$
148424	Find the Mean	4+8+12+16+20	$4 + 8 + 12 + 16 + 20$
148425	Find the Mean	40 , 7 , 2 , 35 , 12 , 23 , 18 , 28	$40$ , $7$ , $2$ , $35$ , $12$ , $23$ , $18$ , $28$
148426	Find the Mean	41 , 38 , 19 , 30 , 21 , 53 , 34 , 34 , 37 , 29 , 50 , 43 , 57 , 28 , 50	$41$ , $38$ , $19$ , $30$ , $21$ , $53$ , $34$ , $34$ , $37$ , $29$ , $50$ , $43$ , $57$ , $28$ , $50$
148427	Find the Mean	5 , 15 , 45 , 135	$5$ , $15$ , $45$ , $135$
148428	Find the Mean	54 , 45 , 33 , 39 , 48 , 40 , 41	$54$ , $45$ , $33$ , $39$ , $48$ , $40$ , $41$
148429	Find the Mean	540 , 630 , 540 , 650 , 480 , 620 , 650 , 540 , 500 , 580 , 390 , 480 , 510 , 520 , 460 , 530	$540$ , $630$ , $540$ , $650$ , $480$ , $620$ , $650$ , $540$ , $500$ , $580$ , $390$ , $480$ , $510$ , $520$ , $460$ , $530$
148430	Find the Mean	9 , 4 , 8 , 3 , 5	$9$ , $4$ , $8$ , $3$ , $5$
148431	Find the Mean	88 , 89 , 65 , 62 , 83 , 63 , 74 , 64 , 71 , 82 , 66 , 88 , 79 , 60 , 86 , 63 , 93 , 99 , 60 , 85	$88$ , $89$ , $65$ , $62$ , $83$ , $63$ , $74$ , $64$ , $71$ , $82$ , $66$ , $88$ , $79$ , $60$ , $86$ , $63$ , $93$ , $99$ , $60$ , $85$
148432	Find the Mean	80 , 73 , 72 , 76 , 84 , 86 , 82 , 73 , 81 , 84 , 78 , 85 , 87 , 84 , 70	$80$ , $73$ , $72$ , $76$ , $84$ , $86$ , $82$ , $73$ , $81$ , $84$ , $78$ , $85$ , $87$ , $84$ , $70$
148433	Find the Mean	99 , 86 , 76 , 95 , 91	$99$ , $86$ , $76$ , $95$ , $91$
148434	Find the Mean	210 , 160 , 200	$210$ , $160$ , $200$
148435	Find the Mean	2 , 6 , 10 , 20 , 24 , 30 , 34 , 40	$2$ , $6$ , $10$ , $20$ , $24$ , $30$ , $34$ , $40$
148436	Find the Mean	16 , 19 , 21 , 18 , 17 , 22 , 14 , 18	$16$ , $19$ , $21$ , $18$ , $17$ , $22$ , $14$ , $18$
148437	Find the Mean	31.7 , 42.8 , 26.4 , 39.1	$31.7$ , $42.8$ , $26.4$ , $39.1$
148438	Find the Mean	3 , 4 , 5 , 6 , 7 , 8 , 9 , 11 , 13 , 15 , 18 , 19 , 29	$3$ , $4$ , $5$ , $6$ , $7$ , $8$ , $9$ , $11$ , $13$ , $15$ , $18$ , $19$ , $29$
148439	Find the Mean	24 , 34 , 32 , 16 , 45 , 38 , 28	$24$ , $34$ , $32$ , $16$ , $45$ , $38$ , $28$
148440	Find the Mean	234 , 321 , 229 , 357 , 289	$234$ , $321$ , $229$ , $357$ , $289$
148441	Find the Mean	13 , 17 , 15 , 18 , 21 , 13 , 20	$13$ , $17$ , $15$ , $18$ , $21$ , $13$ , $20$
148442	Find the Mean	14 , 15 , 16 , 17 , 18 , 19 , 20	$14$ , $15$ , $16$ , $17$ , $18$ , $19$ , $20$
148443	Find the Mean	14 , 18 , 22 , 26 , 30	$14$ , $18$ , $22$ , $26$ , $30$
148444	Find the Mean	116 , 130 , 120 , 125 , 140 , 125	$116$ , $130$ , $120$ , $125$ , $140$ , $125$
148445	Find the Mean	11 , 13 , 10 , 9 , 7 , 6 , 9 , 7	$11$ , $13$ , $10$ , $9$ , $7$ , $6$ , $9$ , $7$
148446	Find the Mean	1227 , 1250 , 1260 , 1283 , 1381 , 1450 , 1483 , 1483	$1227$ , $1250$ , $1260$ , $1283$ , $1381$ , $1450$ , $1483$ , $1483$
148447	Find the Mean	10 , 20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 110 , 120	$10$ , $20$ , $30$ , $40$ , $50$ , $60$ , $70$ , $80$ , $90$ , $100$ , $110$ , $120$
148448	Find the Mean	10150 , 10211 , 10424 , 10769 , 10884 , 11155 , 11477	$10150$ , $10211$ , $10424$ , $10769$ , $10884$ , $11155$ , $11477$
148449	Find the Mean	1.8 , 1.7 , 1.3 , 1.1 , 1.2 , 1.6 , 1.8	$1.8$ , $1.7$ , $1.3$ , $1.1$ , $1.2$ , $1.6$ , $1.8$
148450	Find the Mean	0.4 , 0.5 , 0.7 , 0.8 , 1.1 , 0.4 , 0.9 , 1.3	$0.4$ , $0.5$ , $0.7$ , $0.8$ , $1.1$ , $0.4$ , $0.9$ , $1.3$
148451	Solve by Addition/Elimination	x+3y=9 , 6x+18y=54	$x + 3 y = 9$ , $6 x + 18 y = 54$
148452	Solve by Addition/Elimination	x+4y=33x-2y=-5	$x + 4 y = 33 x - 2 y = - 5$
148453	Solve by Addition/Elimination	-x+5y=-32x-10y=6	$- x + 5 y = - 32 x - 10 y = 6$
148454	Solve by Addition/Elimination	x+y=6y=2x	$x + y = 6 y = 2 x$
148455	Solve by Addition/Elimination	x+y=-1 x-y=3	$x + y = - 1$ $x - y = 3$
148456	Solve by Addition/Elimination	x-2y=4x-3y=15	$x - 2 y = 4 x - 3 y = 15$
148457	Solve by Addition/Elimination	y=7xy=3x	$y = 7 x y = 3 x$
148458	Solve by Addition/Elimination	y=3x+8 12x-4y=-32	$y = 3 x + 8$ $12 x - 4 y = - 32$
148459	Solve by Addition/Elimination	x-y=-53x+y=1	$x - y = - 53 x + y = 1$
148460	Solve by Addition/Elimination	y=x^2+3x-4y=2x+2	$y = x^{2} + 3 x - 4 y = 2 x + 2$
148461	Solve by Addition/Elimination	y=9xy=7x	$y = 9 x y = 7 x$
148462	Solve by Addition/Elimination	x^2+y^2=24y^2-3x^2=12	$x^{2} + y^{2} = 24 y^{2} - 3 x^{2} = 12$
148463	Solve by Addition/Elimination	-c+2d=13-9c-4d=-15	$- c + 2 d = 13 - 9 c - 4 d = - 15$
148464	Solve by Addition/Elimination	x^2+y^2=74x^2-y^2=24	$x^{2} + y^{2} = 74 x^{2} - y^{2} = 24$
148465	Solve by Addition/Elimination	x^2+y^2=68x^2-y^2=60	$x^{2} + y^{2} = 68 x^{2} - y^{2} = 60$
148466	Solve by Addition/Elimination	x+2y=84x+8y=32	$x + 2 y = 84 x + 8 y = 32$
148467	Solve by Addition/Elimination	-8x-9y=5-x+4y=3	$- 8 x - 9 y = 5 - x + 4 y = 3$
148468	Solve by Addition/Elimination	7x+y=-32x-3y=-14	$7 x + y = - 32 x - 3 y = - 14$
148469	Solve by Addition/Elimination	-8x+4y=123x+y=-7	$- 8 x + 4 y = 123 x + y = - 7$
148470	Solve by Addition/Elimination	6x-6=-8y*5x+4y=-11	$6 x - 6 = - 8 y \cdot 5 x + 4 y = - 11$
148471	Solve by Addition/Elimination	6x-6=-8y , 5x+4y=-11	$6 x - 6 = - 8 y$ , $5 x + 4 y = - 11$
148472	Solve by Addition/Elimination	7x+3y=30 -2x+3y=3	$7 x + 3 y = 30$ $- 2 x + 3 y = 3$
148473	Solve by Addition/Elimination	7r-3s=232r-6s=-14	$7 r - 3 s = 232 r - 6 s = - 14$
148474	Solve by Addition/Elimination	7x+1/3y=-2/3-1/2x+1/5y=9	$7 x + \frac{1}{3} y = - \frac{2}{3} - \frac{1}{2} x + \frac{1}{5} y = 9$
148475	Solve by Addition/Elimination	6x-5y=1 , 12x-10y=2	$6 x - 5 y = 1$ , $12 x - 10 y = 2$
148476	Find the Slope and y-intercept	(1,40) , (3,90)	$(1, 40) (3, 90)$
148477	Find the Slope and y-intercept	(-7,0) , (0,7)	$(- 7, 0) (0, 7)$
148478	Solve by Addition/Elimination	1/3x-1/2y=-5-3/4x+4y=-1/4	$\frac{1}{3} x - \frac{1}{2} y = - 5 - \frac{3}{4} x + 4 y = - \frac{1}{4}$
148479	Solve by Addition/Elimination	1/6x-1/2y=2 1/3x-4/5y=-2	$\frac{1}{6} x - \frac{1}{2} y = 2 \frac{1}{3} x - \frac{4}{5} y = - 2$
148480	Solve by Addition/Elimination	1/5x+y=8/5 , 1/10x+1/3y=9/10	$\frac{1}{5} x + y = \frac{8}{5}$ , $\frac{1}{10} x + \frac{1}{3} y = \frac{9}{10}$
148481	Solve by Addition/Elimination	1/5x+y=2/5 , 1/10x+1/3y=1/2	$\frac{1}{5} x + y = \frac{2}{5}$ , $\frac{1}{10} x + \frac{1}{3} y = \frac{1}{2}$
148482	Solve by Addition/Elimination	1/5x+y=7/5 , 1/10x+1/3y=9/10	$\frac{1}{5} x + y = \frac{7}{5}$ , $\frac{1}{10} x + \frac{1}{3} y = \frac{9}{10}$
148483	Solve by Addition/Elimination	13x+7y=163x-8y=11	$13 x + 7 y = 163 x - 8 y = 11$
148484	Find the LCD	7/(12m^3n)3/(4mn^2)	$\frac{7}{12 m^{3} n} \frac{3}{4 m n^{2}}$
148485	Find the LCD	(a^2)/(a^2-2a+1)5/(a^2-8a+7)	$\frac{a^{2}}{a^{2} - 2 a + 1} \frac{5}{a^{2} - 8 a + 7}$
148486	Find the LCD	1/(x^2-7x+10)=x/(x-5)+1/(x-2)	$\frac{1}{x^{2} - 7 x + 10} = \frac{x}{x - 5} + \frac{1}{x - 2}$
148487	Solve by Addition/Elimination	2x+4y=8 3x-3y=12	$2 x + 4 y = 8$ $3 x - 3 y = 12$
148488	Solve by Addition/Elimination	2x+4y=64x+8y=0	$2 x + 4 y = 64 x + 8 y = 0$
148489	Solve by Addition/Elimination	2x+5y=16 3x-5y=-1	$2 x + 5 y = 16$ $3 x - 5 y = - 1$
148490	Solve by Addition/Elimination	-2x+7y=-6-4x+14y=-12	$- 2 x + 7 y = - 6 - 4 x + 14 y = - 12$
148491	Solve by Addition/Elimination	2x+y=56x+3y=15	$2 x + y = 56 x + 3 y = 15$
148492	Solve by Addition/Elimination	2x-11y=75x-5y=7	$2 x - 11 y = 75 x - 5 y = 7$
148493	Solve by Addition/Elimination	2x+3y=17 x+5y=19	$2 x + 3 y = 17$ $x + 5 y = 19$
148494	Solve by Addition/Elimination	2x^2+5y^2=42x^2-5y^2=25x-10	$2 x^{2} + 5 y^{2} = 42 x^{2} - 5 y^{2} = 25 x - 10$
148495	Solve by Addition/Elimination	2x^2-8y^3=194x^2+16y^3=34	$2 x^{2} - 8 y^{3} = 194 x^{2} + 16 y^{3} = 34$
148496	Solve by Addition/Elimination	2x+4y=143x-2y=-3	$2 x + 4 y = 143 x - 2 y = - 3$
148497	Solve by Addition/Elimination	2x+4y=3810x+3y=105	$2 x + 4 y = 3810 x + 3 y = 105$
148498	Solve by Addition/Elimination	2x+3y=45x+y=10	$2 x + 3 y = 45 x + y = 10$
148499	Solve by Addition/Elimination	2x+3y=6 , x-3y=7	$2 x + 3 y = 6$ , $x - 3 y = 7$
148500	Solve by Addition/Elimination	-2x-2y+2z=-2-4x+3y-3z=-322x-3y-2z=17	$- 2 x - 2 y + 2 z = - 2 - 4 x + 3 y - 3 z = - 322 x - 3 y - 2 z = 17$