3 years ago

What are some important concepts to understand in algebra?

Mathematics

1 answer:

givi [52]3 years ago

5 0

Answer:

what you do on one side you do on the other

Step-by-step explanation:

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Anton [14]

Answer: The last one.

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3 years ago

Karen is paid $6.25 per hour. Last week she worked 4 hours on Monday, 3 ½ hours on Tuesday, 5 hours on Wednesday, 2 hours on Thu

dolphi86 [110]

Answer: 118.75

Step-by-step explanation: Add up all numbers first

(4 + 3.5+ 5 + 2 + 4.5) = 19 hours

then multiply 19 by 6.25

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3 years ago

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Which of the following are mutually exclusive events?

Alexandra [31]

Answer: A

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2 years ago

24% of students buy there lunch, 190 students bring their lunch from home. How many students are there in total

miv72 [106K]

so we know that 24% of the students buy their lunch at the cafeteria, and 190 students brownbag.

well, 100% - 24% = 76%, so the remainder of the students, the one that is not part of the 24% is 76%, and we know that's 190 of them.

since 190 is 76%, how much is the 24%?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 190&76\\ x&24 \end{array}\implies \cfrac{190}{x}=\cfrac{76}{24}\implies 4560=76x \\\\\\ \cfrac{4560}{76}=x\implies 60=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{total amount of students}}{190+60\implies 250}$