Mathematics, 30.01.2020 19:44 emacwhaleng

Evaluate the expression 12.6 (2-3) + 2^6 divided by 4
a. -4.6
b. 3.4
c. 21.55
d. 12.85

Answers

$\bf 12.6(2-3)+2^6 \div 4\implies \stackrel{\mathbb{P~E~M~D~A~S}}{12.6(\stackrel{\stackrel{2-3}{\downarrow }}{-1})}+2^6\div 4\implies 12.6(-1)+\stackrel{\stackrel{2^6}{\downarrow }}{64}\div 4 \\\\\\ \stackrel{\stackrel{12.6(-1)}{\downarrow }}{-12.6}+64\div 4\implies -12.6+\stackrel{\stackrel{64\div 4}{\downarrow }}{16}\implies \stackrel{\stackrel{-12.6+16}{\downarrow }}{3.4}$

Answer from: Quest

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

Answer from: Quest

Its a right angled triangle not a right triangle

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Evaluate the expression 12.6 (2-3) + 2^6 divided by 4
a. -4.6
b. 3.4
c. 21.55