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tigry1 [53]
3 years ago
11

Help me Help me Help me

Mathematics
1 answer:
koban [17]3 years ago
6 0

Answer:

For the first one is 75 and 30 looks on a calculator add 75+75+30=180

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By what percent must we decrease the number A to obtain the number 4A/5?
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\bf \cfrac{4A}{5}\implies \cfrac{4}{5}\cdot A\impliedby \textit{A is being reduced to four fifths} \\\\\\ \stackrel{\textit{let's convert four fifths to percentage}}{\cfrac{4}{5}\cdot 100\implies \cfrac{400}{5}\implies 80}


so 4/5 of A is really 80% of A then.

since a whole A is 100% of A, 100% - 80% = 20%, A is being reduced by 20%, namely 1/5.

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According to the graph, the value of the constant in the equation below is 80 and is denoted as option D.

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Read more about Graph here brainly.com/question/19040584

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