Question

Pls answer just the answers to all of these but the 1st question!

Answer 1

$\huge \colorbox{red}{solve \: the \: equations}$

$6 = > 2y + 7 = 3 \\ \\ 2y = 3 - 7 \\ \\ 2y = - 4 \\ \\ y = \frac{ - 4}{2} \\ \\ y = - 2$

$7 = > 4b + 3 = - 9 \\ \\ 4b = - 9 - 3 \\ \\ 4b = 12 \\ \\ b = \frac{12}{4} \\ \\ b = - 3$

$8 = > 2 + 17 = 5k \\ \\ 19 = 5k \\ \\5k = 19 \\ \\ k = \frac{19}{5}$

$9 = > - 6t - 7 = 17 \\ \\ - 6t = 17 + 7 \\ \\ - 6t = 24 \\ \\ t = \frac{24}{ - 6} \\ \\ t = 4$

$10 = > 8n + 16.2 = 1.6 \\ \\ 8n = 1.6 - 16.2 \\ \\ 8n = - 14.6 \\ \\ n = \frac{ - 14.8}{8} \\ \\ n = - 1.825$

$11 = > - 5g + 2.3 = 18.8 \\ \\ - 5g = - 18.8 - 2.3 \\ \\ - 5g = - 21.1 \\ \\ g = \frac{ - 21.1}{ - 5} \\ \\ g = 4.22$

$\huge\colorbox{yellow}{multiply \: or \: divide}$

$1 = > - 6.2 \times 5.6 \\ \\ = - 34.72 \\ \\ = > \frac{868}{25} \: or \: - 34 \times \frac{18}{25}$

$2 = > \frac{8}{3} \times ( - 2 \frac{1}{2}) \\ \\ = \frac{8}{3} \times ( \frac{ - 5}{2}) \\ \\ = \frac{ - 4}{3} \times 5 \\ \\ = \frac{20}{3} \\ \\ = - 6 \frac{2}{3}$

$3 = > \frac{5}{2} \div ( \frac{ - 4}{5}) \\ \\ = \frac{ - 5}{2} \times \frac{5}{4} \\ \\ = \frac{ - 25}{8} \\ \\ = - 3 \frac{1}{8} \: or \: - 3.125$

$4 = > - 18.6 \div ( - 3) \\ \\ = 18.6 \div 3 \\ \\ = 6.2 \\ \\ = \frac{31}{5} \: \: or \: \:6 \frac{1}{5}$

$\huge \colorbox{cyan}{multiple \: choice}$

$\large{ \underline{ \underline{ \pink{ \tt{ \orange{ question}}}}}}$

==》which fraction is not equivalent to 0.75 ?

$\colorbox{pink}{answer = > option(c)}$

==》Obviously the value of the fractions:

3/4 , 15/20, 9/12 is equal to 0.75

==》The value of the fraction 6/9 to is 0.667

==》therefore the fraction 6/9 is not equivalent to 0.75

▪︎How to find equivalent fractions?

==》Two frations are equivalent when they have the same value when written in lowest terms. The fraction 6/8 is equal to 3/4 when reduced to lowest terms.

==》To find equivalent fractions, just multiply the numerator and denominator of that reduced fraction (3/4) by any interger number, ie, multiply by 2, 3, 10, 30

▪︎6/8 is equivalent to 3/4 because 3 x 2 = 6 and 4 x 2 = 8

▪︎9/12 is equivalent to 3/4 because 3 x 3 = 9 and 4 x 3 = 12

▪︎12/16 is equivalent to 3/4 because 3 x 3 = 12 and 4 x 3 = 16 and so on

==》Equivalent fractions may look different, but when you reduce then to the lowest terms you will get the same value.

==》 If any fraction is not reduced to lowest terms, you can get other equivalent fractions just dividing both numerator and denominator by the same number.

Bè BrÁiNlY

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