9. klassile kordamiseks (2)

Authored by Triin Uussaar

Mathematics

9th Grade

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17 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Leia 28% arvust 468

131

131,04

132

132,04

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Koonda sarnased liikmed: $8xy+6x-5y+8-3xy-7x+6y-9=$

(a)

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Lahenda võrrand $u^2-16=0$

$u_1=u_2=4$

$u_1=-4\ ja\ u_2=4$

lahendid puuduvad

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

Taanda: $\frac{4x-2}{2x-1}$

(a)

FILL IN THE BLANKS QUESTION

30 sec • 1 pt

Tegurda: $2x^2+x=$

(a)

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

$\left(\frac{1}{3}\right)^{-1}=$

$\frac{1}{3}$

pole võimalik arvutada

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

$\left(\frac{1}{3}\right)^{-2}=$

pole võimalik arvutada

-9

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

$3^{-2}=$

$\frac{1}{9}$

-9

pole võimalik arvutada

$\frac{1}{3}$

FILL IN THE BLANKS QUESTION

1 min • 1 pt

$\left(2^2\right)^2=$

(a)

10.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Astenda: $\left(-\frac{2a}{3}\right)^2=$

$\frac{4a^2}{9}$

$-\frac{4a^2}{9}$

pole võimalik arvutada

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9. klassile kordamiseks (2)

Leia 28% arvust 468

Koonda sarnased liikmed: 8xy+6x−5y+8−3xy−7x+6y−9=8xy+6x-5y+8-3xy-7x+6y-9=8xy+6x−5y+8−3xy−7x+6y−9= (a)

Lahenda võrrand u2−16=0u^2-16=0u2−16=0

Taanda: 4x−22x−1\frac{4x-2}{2x-1}2x−14x−2​ (a)

Tegurda: 2x2+x=2x^2+x=2x2+x= (a)

(13)−1=\left(\frac{1}{3}\right)^{-1}=(31​)−1=

(13)−2=\left(\frac{1}{3}\right)^{-2}=(31​)−2=

3−2=3^{-2}=3−2=

(22)2=\left(2^2\right)^2=(22)2= (a)

Astenda: (−2a3)2=\left(-\frac{2a}{3}\right)^2=(−32a​)2=

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Koonda sarnased liikmed: $8xy+6x-5y+8-3xy-7x+6y-9=$

(a)

Lahenda võrrand $u^2-16=0$

Taanda: $\frac{4x-2}{2x-1}$

(a)

Tegurda: $2x^2+x=$

(a)

$\left(\frac{1}{3}\right)^{-1}=$

$\left(\frac{1}{3}\right)^{-2}=$

$3^{-2}=$

$\left(2^2\right)^2=$

(a)

Astenda: $\left(-\frac{2a}{3}\right)^2=$