Grade 9 - Math Genius Online Club

Convert 11000110₂ into a number in base eight.

• 36₈

• 306₈

• 216₈

• 612₈

The factors of 4a² - 16 are

• 4(a-2)(a-2)

• 4(a-2)(a + 2)

• (a-2)(a + 2)

• 4(a + 2)(a + 2)

The process of expressing an algebraic expression in terms of its factors is called _____.

• equation

• rational numbers

• factorization

• sentence

State the value of the underlined digit in the number 110011_{2 ,} in base ten.

• 8

• 16

• 32

• 64

Change of subject of a formula means______.

• Rearranging the formula so that a different letter or symbol become the subject

• replacing the letter of the subject

• Dividing both sides by a certain symbol

• None of the above

Making x the subject of the formula y = x + 17 gives

• x = y/17

• x = y + 17

• x = 17y

• x = y - 17

The factors of ab + ac are

• a (b + c)

• (a + b) (a + c)

• (a + c) (a + b)

• (a + b) c

(3x + 4y)(9x² −12xy + 16y²) is equal to

• 27x³ - 64y³

• 27x³ + 64y³

• 64x³ + 27y³

• 64x³ - 27y³

 

Express 124₈ as a number in base five.

• 312₅

• 213₅

• 314₅

• 413₅

A number is subtracted from 52 and result is divided by 6,the answer is twice the original number, the number is

• 2

• 4

• 6

• 8