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Atbilžu arhīvs № 24161, Algebra, 8 klase Lai pārbaudītu upē izliktos tīklus, Elgars brauc ar motorlaivu, turklāt līdz zvejas vietai viņam jābrauc pa straumei, bet mājās jāatgriežās, braucot pret straumi. Tāpēc turpceļu Elgars veica 2,4h, bet mājupceļu 3h 12min. Aprēķini motorlaivas ātrumu, braucot pa straumei, ja upes straumes ātrums ir 3,5 km/h... ___________________________________ Vajadzētu ar visām darbībām un jautajumiem... .:___:. (3.5+s)*2.4=3.2*(s-3,5) 2.4s+8,4=3.2s-11.2 3.2s-2.4s=8.4+11.2 0.8s=19.6 s=24.5 km/h agent. x-atrums ta ka atalums ir vinads tad (x+3.5)*2.4=(X-3.5)*3.12 2.4x+8.4=3.12x-10.92 2.4x-3.12x=-10.92-8.4 -0.72x=-19.32 x=1932:72 x=26.8 km/h № 24236, Algebra, 8 klase (√2+√5)(√5-2√2) (1-3√7)(√7+4) √15*(√3-1+2√5) Garik (√2+√5)(√5-2√2)=√10-2√4÷5-2√10=5-√10 (1-3√7)(√7+4)=√7÷4÷4-12=√7-4 √15*(√3-1+2√5)=√45-√15÷2√75=√5·9-√15÷2√25·3=3√5-√15÷5√3 bavarde (√2+√5)(√5-2√2)=√10-4+5-2√10=1-√10 (1-3√7)(√7+4)=√7+4-21-12√7=-17-11√7 √15*(√3-1+2√5)=3√5-√15+10√3 ГрибчеГ (√2+√5)(√5-2√2)= √10-2√4+√25-2√10=-√10-4+5=1-√10 (1-3√7)(√7+4)=√7+4-3√49-12√7=4-12+√7-12√7=-8-11√7 √15*(√3-1+2√5)=√45-√15+2√75=√9*5 - √15 + 2√25*3 = 3√5-√15 +10√3 catwoman (√2+√5)(√5-2√2)=√10+5-4-2√10=1-√10 (1-3√7)(√7+4)=√7-21+4-12√7=-17-11√7 √15*(√3-1+2√5)=√45-√15+2√75=3√5-√15+10√3 .:___:. √10+4+5-2√10=9-√10 4+√7-21+4√7=-17+5√7 √45-√15+2√30=√45-15+2√30=√30+2√30=3√30 № 24238, Algebra, 8 klase (√2+√5)(√5-2√2) (1-3√7)(√7+4) √15*(√3-1+2√5) pomogite plizzzzz uni 1.) 5-2=3 2) √7 -21 +4-12√7=-11√7-17 3) 3√5 -√15+10√3 catwoman (√2+√5)(√5-2√2)=√10+5-4-2√10=1-√10 (1-3√7)(√7+4)=√7-21+4-12√7=-17-11√7 √15*(√3-1+2√5)=√45-√15+2√75=3√5-√15+10√3 xakerok (√2+√5)(√5-2√2)=√10-8+5-2√10=-3-√10 (1-3√7)(√7+4)=√7+4-21-12√7=-17-11√7 √15*(√3-1+2√5)=√45-√15+2√75=√9*5-√15+2√25*3=3√5-√15+10√3 bukss_a A) (√2+√5)(√5-2√2)=√2*√5-2√2*√2+√5*√5-2√2*√5= =√10-2√4+√25-2√10=-√10-4+5=√10+1 B) (1-3√7)(√7+4)=√7+4-3√49-12√7=4-21-11√7=-17-11√7 C) √15(√3-1+2√5)=√45-√15+2√75=√9*√5-√15+2√3*√25= =3√5-√15+10√3 .:___:. √10+4+5-2√10=9-√10 4+√7-21+4√7=5√7-17 √45-√15+2√30=√45-15+2√30=√30+2√30=3√30 № 24241, Algebra, 8 klase √0,5·√18 Lenka √9=3 malinka678 √0.5 *√18=√9=3 agent. √0.5·√18=√9=3 bukss_a √0.5·√18=√0.5·18(vis zem saknes)=√9=3 xakerok √0,5·√18=√18*0,5=√9=3 .:___:. =√0,5*18=√9=3 № 24242, Algebra, 8 klase √½·√75 SKIRS √½·√75=√(0,5·75)=√(37,5) catwoman √½·√75=√75/2=5√6/2 agent. √½·√75=√½·√3·√25=5√1,5 malinka678 √1/2*√75=√38.5 bukss_a √½·√75=√½*√25*√3=5√3*√½ № 24244, Algebra, 8 klase 2√3·√3 Lenka 2·3=6 xakerok 2√3·√3=2√9=2*3=6 catwoman 2√3·√3=6 easty 2√3 · √3 2 ·3=6 agent. 2√3·√3=2√9=2·3=6 № 24245, Algebra, 8 klase 0,2√14·√7 irina 0,2√14·√7=√3.92=7*0.2√2=1.4√2 xakerok 0,2√14·√7=0,2√98=0,2√49*2=1,4√2 catwoman 0,2√14·√7=0,2√98=1,4√2 easty 0,2√14·√7= =0,2√98= =0,2√2·49= =1,4√2 agent. 0.2√14·√7=0.2√49·√2=1.4√2 № 24246, Algebra, 8 klase -1,5√12·2√3 MaxaDesign -1,5√12·2√3=-3√36=18 easty -1,5√12·2√3 -3√36 -3·6=-18 xakerok -1,5√12·2√3=-1,5√4*3 *2√3=-1,5*2√3 *2√3=-3√3 *2√3=-6√9=-6*3=-18 .:___:. =-3√12*3=-3√36=-18 agent. -1.5√12·2√3=-3√36=-18 № 24249, Algebra, 8 klase -4√6·(-0,25√4) MaxaDesign -4√6·(-0,25√4)= 1√24=2√6 easty -4√6·(0,25√4)= =√24= =2√6 catwoman -4√6·(-0,25√4)=1√24=2√6 agent. -4√6·(-0,25√4)=√6·√4=2√6 xakerok -4√6·(-0,25√4)=-4√6 *(-0,25*2)=-4√6*(-0,5)=2√6 № 24250, Algebra, 8 klase 7√7·(¼√7) .:___:. =1.75√7*√7=1.75*7=12,25 (12¼) spooky 7√7·(¼√7)=1,75·√49=1,75·7=12,25 catwoman 7√7·(¼√7)=49/4=12 1/4 agent. 7√7·(¼√7)=1¾√49=12¼ easty 7√7(¼√7)= 7/4·7= =49/4=12,25   8/110   Atpakaļ >>

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