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2 years ago

1/5 of 30 students in the class where left-handed how many of the students were left-handed

Mathematics

2 answers:

rewona [7]2 years ago

5 0

6 students were left handed

Charra [1.4K]2 years ago

4 0

Hi there.

All we have to do is change the fraction into a decimal and multiply.

$\frac{1}{5}$ = 0.20

30 · 0.2 = 6

6 students were left-handed.

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What value of x satisfies this equation, 4/5 x - 6 = -2 ? Group of answer choices

andrew11 [14]

Answer:

Step-by-step explanation:

4/5 x -6 = -2

4 x -30 = -10

-120 = -10

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2 years ago

After substituting, what is the first operation performed when evaluating 5+(9x-3)+2 for x = 5?

Anarel [89]

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Multiplication

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2 years ago

Read 2 more answers

Solve each equation. List any restrictions. Check your solutions. <br> 12/x+11=17

Thepotemich [5.8K]

12+11x=17x11x+12=17x
(both sides of the equation)
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(Subtract 17x from both sides)
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(Subtract 12 from both sides)
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2 years ago

Morgan works for a company that ships packages and must measure the size of each box that needs to be shipped. Morgan measures a

barxatty [35]

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3 years ago

Please help I have spent hours trying to do...

Igoryamba

Answer:

914.4 mm
0.0479594 km

Step-by-step explanation:

For units conversion, use a conversion factor ratio with the units you do want in the numerator and the units you don't want in the denominator. The numbers in the numerator and denominator give the ratio a value of 1: the numerator is equal to the denominator--just in different units.

1. For feet to mm, you need a couple of additional conversion factors besides the ones shown:

1 foot = 12 in

1 cm = 10 mm

So, the conversion is ...

$(3\text{ ft})\times\dfrac{12\text{ in}}{1\text{ ft}}\times\dfrac{2.54\text{ cm}}{1\text{ in}}\times\dfrac{10\text{ mm}}{1\text{ cm}}=3\times12\times2.54\times10\text{ mm}\\\\=\boxed{914.4\text{ mm}}$

2. The additional factor you need for this problem is ...

1 mile = 5280 feet

So, the conversion is ...

$(157\text{ ft})\times\dfrac{1\text{ mi}}{5280\text{ ft}}\times\dfrac{1\text{ km}}{0.62\text{ mi}}=\dfrac{157}{5280\times0.62}\text{ km}\\\\\approx\boxed{0.0479594\text{ km}}$

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<em>Additional comment</em>

You can use Google to do units conversion by typing "3 feet to mm" or "157 feet to km". However, the conversion factor for the latter will be more exact than the one given in this problem. Hence the Google answer to the second question will not be applicable here.

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2 years ago