'S e foirmle sa bheil co-dhiù aon chaochladair a th' ann an co-aontar. Tha grunn sheòrsachan ann: co-aontar loidhne dhìreach, ailseabrach, co-amail is far am feum cuspair an fhoirmle atharrachadh.
Obraich a-mach an caisead, agus fàg do fhreagairt mar bhloigh, air a shìmpleachadh gu tur.
\[\frac{5}{{15}}\]
\[\frac{1}{{3}}\]
\[\frac{15}{{5}}\]
Cleachd an diagram agus obraich a-mach an caisead mar dheichead gu 1 ionad deicheach.
0.2
5.0
7.2
Dè an rathad as caise de na leanas?
A
B
C
Càit a bheil an loidhne \(y = - 4x - 2\) a' gearradh a' y-axis?
(0,2)
(-2, 0)
(0,-2)
Dè an co-aontar dhen loidhne dhìrich, a tha a' dol tron phuing (0, -7) le caisead de 4, a tha san riochd \(y = mx + c\)?
\[y = - 7x + 4\]
\[y = 4x - 7\]
\[y = 4x + 7\]
Obraich a-mach caisead na loidhne gu h-ìosal.
-0.6
-1.7
0.6
Obraich a-mach co-aontar na loidhne gu h-ìosal.
\[y = 2x + 1\]
\[y = 3x + 2\]
\[y = 2x - 1\]
Fuasgail an co-aontar a leanas.
\[10z + 17 = 47\]
\[z = 13\]
\[z = 3\]
\[z = 6.4\]
\[6x + 11 = 4x + 27\]
\[x = 8\]
\[x = 19\]
\[x = 7\]
Smaoinich mi air àireamh, dhùbhlaich mi i agus chuir mi rithe 1. 'S e 33 am freagairt.
Sgrìobh co-aontar a sheallas am fiosrachadh seo.
\[2x + 1 = 33\]
\[3x + 1 = 33\]
\[x + 1 = 33\]
Fuasgail an t-eas-aontar a leanas.
\[9p + 11 \textgreater 29\]
\[p \textless 2\]
\[p \textgreater 2\]
\[p \textgreater 18\]
\(4y - 8 \le 12\).
\[y \le 20\]
\[y \le 4\]
\[y \le 5\]
\[3x + 10 \ge 13\]
\[x \ge 1\]
\[x \ge 3\]
\[x \ge 23\]
Anns a' cho-aontar \(S = \frac{D}{T}\), atharraich cuspair an fhoirmle gu D.
\[D = ST\]
\[D = \frac{S}{T}\]
\[D = \frac{T}{S}\]
Anns a' cho-aontar, \(C = 2\pi r\), atharraich cuspair an fhoirmle gu r.
\[r = 2C\pi\]
\[r = \frac{{C\pi }}{2}\]
\[r = \frac{C}{{2\pi }}\]