Carrie said "448 rounds to 500 because 448 rounds to 450 and 450 rounds to 500." Is she correct? Explain.

Mathematics

2 answers:

mestny [16]3 years ago

7 0

Answer:

no she is not correct because it would have to be 450 in order to round to 500

CaHeK987 [17]3 years ago

6 0

Answer: No she is not correct

Step-by-step explanation:

She is saying that 448 rounds to 500 but 448 actually rounds to 400

so it would going to have to be 450 or higher to round to 500

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Mrs. Rodriguez wants to pay her restaurant bill which is $24.00. A 6% tax is added by the waitress. If Mrs. Rodriguez wants to l

Elis [28]

Answer:

30.53

Step-by-step explanation:

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6 0

3 years ago

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Which equation is the direct variation equation if f(x) varies directly with x and f(x)=-18 when x=3

Otrada [13]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{f(x)}{y}=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=-18\\
x=3
\end{cases}\implies -18=k3
\\\\\\
\cfrac{-18}{3}=k\implies -6=k\qquad therefore\qquad \boxed{\stackrel{f(x)}{y}=-6x}$