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3 years ago

(1). Simplify.

Mathematics

2 answers:

Brut [27]3 years ago

7 0

$22 \div (9 + 2) = 2$
22/11
=2

Akimi4 [234]3 years ago

7 0

Answer:

1) $22\div (9+2)=2$

2) $8+3\cdot 42=134$

3) Option A - $(12+6)\div(3+3)$

4) Option D - $(75-5)\times 1+4$

Step-by-step explanation:

1) Simplify $22\div (9+2)$

Solution :

Add the terms in bracket,

$22\div (9+2)=22\div 11$

Divide,

$22\div (9+2)=2$

2) Evaluate $8+3\cdot 42$

Solution :

Solve the dot product,

$8+3\cdot 42=8+126$

Add the terms,

$8+3\cdot 42=134$

3) Which expression has a value of 3?

Solution : Solve each expression,

A. $(12+6)\div(3+3)$

$(12+6)\div(3+3)=18\div 6=3$

B. $(12+6)\div3+3$

$(12+6)\div3+3=18\div 3+3=6+3=9$

C. $12+6\div(3+3)$

$12+6\div(3+3)=12+6\div 6=12+1=13$

D. $12+(6\div3+3)$

$12+(6\div3+3)=12+(2+3)=12+5=17$

Option A is correct.

4) Which expression has a value of 74?

Solution : Solve each expression,

A. $(75-5)\times(1+4)$

$(75-5)\times(1+4)=70\times 5=350$

B. $75-5\times(1+4)$

$75-5\times(1+4)=75-5\times 5=75-25=50$

C. $75-(5\times1+4)$

$75-(5\times1+4)=75-(5+4)=75-9=66$

D. $(75-5)\times 1+4$

$(75-5)\times 1+4=70\times 1+4=70+4=74$

Option D is correct.

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