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3 years ago

Maria Spent 40 minutes chatting online. How many minutes did she spend playing games?

Mathematics

2 answers:

Aleks [24]3 years ago

5 0

She spent 10 minutes. 25% x 40 = 10.

Naya [18.7K]3 years ago

4 0

I think the answer is 50 mins, I cross multiplied

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HELP PLEASEEE, I REALLY DO NOT UNDERSTAND THESE QUESTIONS. THANK YOU HELP IS VERY MUCH APPRECIATED!!!

MAVERICK [17]

Answer:

a) $40920

b) $38500

Step-by-step explanation:

Given:

5 employees,

Mean = $40300

Median = $38500

Min = $32000

If he lowest paid employee gets a $3100 raise, then his salary becomes

$32000+$3100=$35100

a) If the mean was $40300, then the sum of 5 salaries is

$\$40300\cdot 5=\$201500$

After raising the lowest salary the sum becomes

$\$201500+\$3100=\$204600$

and new mean is

$\dfrac{\$204600}{5}=\$40920$

b) The lowest salary becomes $35100. It is still smaller than the median, so the new median is the same as the old one.

New median = $38500

5 0

3 years ago

A teacher had t packs of notebooks, with 7 notebooks in each. He distributed 3 packs among his students. How many notebooks does

vaieri [72.5K]

Answer:

m/c

Step-by-step explanation:

6 0

3 years ago

An internet search has 220000 results. How does the value of 2 in the leftmost position compare to the value of other 2 in the n

Lilit [14]

Answer:

its 10x the value.

Step-by-step explanation:

20000 x 10 = 220000

5 0

3 years ago

Find a fraction equivalent to 5/7 whose squared terms add up to 1184.

bogdanovich [222]

The system of equations of two unknowns is formulated and solved.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left\{\begin{matrix} \ \ \ \dfrac{x}{y} = \dfrac{5}{7} \\ x^2+y^2 = 1184 \end{matrix}\right. \ \Longrightarrow \ x=\dfrac{5}{7}y } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left (\dfrac{5}{7}y \right )^2+y^2=1184\ \Longrightarrow\ 25y^2+49y^2=58016 } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{74y^{2}=58016} \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ \ y^{2}=784 } \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ y=\pm\sqrt{784}=\pm28 } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{ x=\dfrac{5}{7}(\pm 28)=\pm 20 } \end{gathered}$}$

The fraction that satisfies the request is $\bf{\dfrac{20}{28}}$ , since in $\bf{\dfrac{-20}{-28}}$ the negative signs are canceled and the first fraction is obtained.

3 0

1 year ago

A car can travel 80 miles an hour. How many miles will the car travel in 6 3/4 hours?

Hoochie [10]

6 3/4= 6.75

80 mph * 6.75 hours = 540 miles total

Final answer: 540 miles

7 0

3 years ago

Read 2 more answers