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Mice21
2 months ago
13

Sari estimated the quotient of 120.78 ÷ 9.9 to be 12. She said that her estimate is slightly greater than the actual answer. Is

she correct? Is her estimate reasonable? Explain.
Mathematics
2 answers:
tester [12.3K]2 months ago
6 0
Sari's claim is incorrect because dividing 120.78 by 9.9 equals approximately 12.2, and since 12 is less than 12.2, her estimate is not actually greater than the true result.
Zina [12.3K]2 months ago
4 0

Answer: Sari’s estimate was reasonable, but her belief that it slightly exceeds the actual quotient is wrong. Rounding 120.78 down to 120 and 9.9 up to 10 results in an estimate lower than the true value because the dividend is reduced and the divisor is increased.

Step-by-step explanation:

Hope this helps :D

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There are 28 people on a martial arts course. 13 are female and 15 are male. What fraction of the people are male? ​
lawyer [12517]

Answer:

15/28

Step-by-step explanation:

There are 28 participants total, with 15 being male, resulting in a fraction of 15/28

6 0
27 days ago
The savings account offering which of these APRs and compounding periods offers the best APY?
zzz [12365]
\bf \qquad \qquad \textit{Annual Yield Formula}
\\\\
~~~~~~~~~~~~\textit{4.0784\% compounded monthly}\\\\
~~~~~~~~~~~~\left(1+\frac{r}{n}\right)^{n}-1
\\\\
\begin{cases}
r=rate\to 4.0784\%\to \frac{4.0784}{100}\to &0.040784\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{monthly, thus twelve}
\end{array}\to &12
\end{cases}
\\\\\\
\left(1+\frac{0.040784}{12}\right)^{12}-1\\\\
-------------------------------\\\\
~~~~~~~~~~~~\textit{4.0798\% compounded semiannually}\\\\


\bf ~~~~~~~~~~~~\left(1+\frac{r}{n}\right)^{n}-1
\\\\
\begin{cases}
r=rate\to 4.0798\%\to \frac{4.0798}{100}\to &0.040798\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{semi-annually, thus twice}
\end{array}\to &2
\end{cases}
\\\\\\
\left(1+\frac{0.040798}{2}\right)^{2}-1\\\\
-------------------------------\\\\


\bf ~~~~~~~~~~~~\textit{4.0730\% compounded daily}\\\\
~~~~~~~~~~~~\left(1+\frac{r}{n}\right)^{n}-1
\\\\
\begin{cases}
r=rate\to 4.0730\%\to \frac{4.0730}{100}\to &0.040730\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{daily, thus 365}
\end{array}\to &365
\end{cases}
\\\\\\
\left(1+\frac{0.040730}{365}\right)^{365}-1
7 0
1 month ago
Read 2 more answers
One of the points on the previous graph is the ordered pair(6,$15). What does the point represent? How can you use that order pa
tester [12383]

Answer:

Each coordinate pair indicates the quantity of crates and its associated cost. You can calculate the unit rate by performing division to find the y-value when the x-value equals 1.

Step-by-step explanation:

6 0
1 month ago
Read 2 more answers
Robby had 4 4/9 bags of pet food.All of the bags held the same amount of food when they were full.Of Robby's 4 4/9 bags of pet f
Zina [12379]

Respuesta: 1.8 bolsas

Explicación paso a paso:

A partir de la pregunta, considerando que Robby tiene 4 4/9 bolsas de comida para mascotas, 2/5 eran comida para perros.

2/5 de 4 4/9 = comida para perros.

Convierte 4 4/9 a fracción impropia= 40/9.

2/5 de 40/9 implica 2/5 × 40/9.

= 16/9.

= 1.78 o 1.8.

Espero que esto sea útil, por favor marca como la mejor respuesta.

4 0
2 months ago
an administrator is asked to file papers in a box which has the following dimensions:height 15cm, width 300mm and depth 0.2m. ca
Leona [12618]

Answer:

900cm^3

Step-by-step explanation:

1 cm equals 10 mm

x equals 300mm (by cross multiplication)

1cm times 300mm divided by 10mm equals 10mm times x divided by 10mm

Thus, 30cm equals x

30cm equates to 300mm

1m equals 100cm

0.2m equals x

1m times x divided by 1m equals 0.2m times 100cm divided by 1m

x equals 0.2 times 100cm

x equals 20cm

0.2m converts to 20cm

Length equals 15cm

Width equals 30cm

Height equals 20cm

Volume is length times width times height

Volume equals 15cm times 30cm times 20cm

Volume equals 450cm^2 times 20cm

Volume equals 900cm^3

6 0
1 month ago
Read 2 more answers
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