Round to the nearest hundredth 2.53489

Mathematics

2 answers:

kakasveta [241]3 years ago

3 0

Answer:

2.54

Step-by-step explanation:

2.53489

2.5349

2.535

2.54

Yuliya22 [10]3 years ago

3 0

2.53489 what you do is 4 or less let it rest... 5 or more raise the score
so 9 is greater than five meaning eight will become 9: 2.5349
then: 9 is greater than five meaning the four becomes 5: 2.535
the five is five so the 3 becomes four: 2.54 and your final answer rounded to the nearest hundredth is: 2.54
hope this helps :))

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pychu [463]

$\bf \begin{cases} x^2+y^2=400\\ \boxed{y}=x-28 \end{cases}\qquad \stackrel{\textit{substituting on the 1st equation}}{x^2+\left( \boxed{x-28} \right)^2=400} \\\\\\ x^2+(x^2-56x+28^2)=400\implies x^2+x^2-56x+28^2=400 \\\\\\ 2x^2-56x+784=400\implies 2x^2-56x+384=0 \\\\\\ 2(x^2-28x+192)=0\implies x^2-28x+192=0 \\\\\\ (x-16)(x-12)=0\implies x = \begin{cases} 16\\ 12 \end{cases}$

now that we know what are the x-values, what are the y-values? well, we can just use the 2nd equation, since we know that y = x - 28, then

$\bf y = x - 28\implies \stackrel{\textit{when x = 16}}{y = 16 - 28}\implies y = -12 \\\\\\ y = x - 28\implies \stackrel{\textit{when x = 12}}{y = 12 - 28}\implies y = -16 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (\stackrel{x}{16}~~,~~\stackrel{y}{-12})\qquad,\qquad (\stackrel{x}{12}~~,~~\stackrel{y}{-16})~\hfill$