Math. competition prep. 1

A box contains 30 balls red and white balls the probability of getting a red is 0.3 then , then the number of the red balls = ......

• 15

• 3

• 9

• 10

The sample space of tossing a coin twice = .........

• {H,T}

• {HH,TT}

• {HH , HT , TT ,TH}

• {HT , TH}

The sum of each two consecutive angles in a parallelogram = ..... 

• 90

• 180

• 80

• 110

Tags

CCSS.HSG.C.A.3

(2 - 2) x (3 - 4)

• 8

• -4

• 6

• 0

Tags

CCSS.7.NS.A.3

 $\sqrt{64+36}=8+.......$  

• 1

• 5

• 6

• 2

  $If\ \left(AB\right)^2\ =\ 36\ \ and\ C\ and\ D\ divide\ \overline{AB\ \ }into\ 3\$   $equal\ parts\ ,then\ AC=.....cm$  

• 2

• 3

• 9

Tags

CCSS.HSG.CO.C.10

If -2X < - 8 , then X ...........

• <4

• <-4

• >-4

• x>4

Tags

CCSS.6.EE.B.8

If -x>-3 , then ...............

• x < 3

• x<-3

• x>3

Tags

CCSS.6.EE.B.8

AB=26 cm , AC = 30 cm , AD = 24 cm. BC = ..........cm.

• 10

• 28

• 18

• 13.7

Tags

CCSS.HSG.CO.C.9

In triangle ABC if m(<A) = m(<B)+m(<C) ,then <C is ..........

• acute

• right

• obtuse

Tags

CCSS.8.G.A.5