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3 years ago

What is the value of the expression? 2 1/4 divided by 1 2/5

Mathematics

2 answers:

HACTEHA [7]3 years ago

5 0

Answer:

The Answer is 1 17/28

Step-by-step explanation:

1) turn the mixed fraction into a regular fraction

2 1/4 divided by 1 2/5 = 9/4 divided by 7/5

2) Then Multiply

9/4 X 7/5= 45/28 (Straight across)

3) Simplify 45/28

Give you 1 17/28

Hopes this helps!

ad-work [718]3 years ago

4 0

Answer:

45/28

Step-by-step explanation:

Convert them to mixed fractions

(2 * 4 + 1) / 4 ÷ (1 * 5 + 2) / 5

8 + 1 / 4 ÷ 5 + 2 / 5

9/4 ÷ 7/5

Flip the second fraction and flip the sign - to multiply.

9/4 × 5/7

9 × 5 = 45

4 × 7 = 28

45/28

This could be left as a fraction or converted to a number:

1.60714285714

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adell [148]

Answer:

$4\dfrac{2}{7}$

Step-by-step explanation:

How to calculate the mean absolute deviation:

Step 1: Calculate the mean.

$\text{Mean}=\dfrac{49+55+52+46+47+42+38}{7}=47$

Step 2: Calculate how far away each data point is from the mean using positive distances. These are called absolute deviations.

$\begin{array}{ccccccc}\text{Sun}&\text{Mon}&\text{Tue}&\text{Wed}&\text{Thu}&\text{Fri}&\text{Sat}\\49&55&52&46&47&42&38\\2&8&5&1&0&5&9\end{array}$

Step 3: Add those deviations together.

$\sum|\text{mean}-x_i|=2+8+4+1+0+5+9=30$

Step 4: Divide the sum by the number of data points.

$\text{MAD}=\dfrac{\sum|\text{mean}-x_i|}{n}=\dfrac{30}{7}=4\dfrac{2}{7}$

8 0

3 years ago

Please help. On a winter day in Alaska, the temperature at noon was -0.6°C. From noon to 3:00, the temperature increased by 1.2°

fomenos

Answer:

1st choice

Step-by-step explanation:

Temp at noon was -0.6. It increases 1.2 until 3.

-0.6+1.2

gets colder 0.4, then 0.6.

-0.6+1.2-0.4-0.6

the only correct way to put this equation as one of the other answers is by putting it as -0.6+1.2+(-0.4)+(-0.6)

hope that helped!

7 0

3 years ago

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kipiarov [429]

Answer: 0. 92 = 92%

100% = 500

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Step-by-step explanation:

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Ierofanga [76]

To find the distance in one turn of the wheel you have to find the circumference of the wheel.

Circumference = pi x d
= 3.14 x 5
= 15.7 cm

therefore the rollerblade wheel will travel 15.7 cm per rotation

hope this helps! if you did not understand a step or concept please let me know!

8 0

3 years ago

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swat32

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