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Alekssandra [29.7K]
3 years ago
6

How do you find the answer to 8/10 divided by 1/5

Mathematics
2 answers:
kherson [118]3 years ago
8 0

When fractions are divided by each other, you're really multiplying by the "multiplicative inverse". This is the fraction, but flipped.


\frac{8}{10} \div \frac{1}{5} = \frac{8}{10} \times \frac{5}{1} \\\\So\\\frac{8}{10} \times \frac{5}{1} = \frac{40}{10} = 4

irakobra [83]3 years ago
6 0
1/5 x 2 to get 2/10 so now they have common denominators and 8 divides by 2 is 4 so your answer is 4
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Explain how to write the rational number 3.21 in the form a/b
PSYCHO15rus [73]
As an improper fraction it is 321/100 and a a proper mixed fraction it is 3 and 21/100
5 0
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Can someone help me ? Its due today please
anastassius [24]

Answer:

x=3

y=5

Step-by-step explanation:

3x+2y=19

- 2x+2y=16

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x=3

3(3)=9

19-9=10

10÷2=5

y=5

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Write an equation that equals 65
Ilya [14]
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100 points. Easy question. <br><br> Topic: Fractions.<br><br> ONLY COMPLETE QUESTION 1
Basile [38]

Answer: 1/4 full.

Step-by-step explanation:

The question is asking for how much gas will be left in the tank after 2/3 of the gas in the tank is used.

There is currently 3/4 of the tank remaining.

To find 2/3 of 3/4, you can multiply the fractions together.

Do this by multiplying both numerators and both denominators:

\frac{2}{3} *\frac{3}{4} = \frac{2*3}{3*4} = \frac{6}{12}

Then, subtract 6/12 from 3/4. You can do this by simplifying the first fraction to 2/4 (divide both the numerator and denominator by 3).

3/4 - 2/4 = 1/4

There will be 1/4 of the tank left.

6 0
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The angle of depression from the top of a building to a point
AleksandrR [38]

The distance between point on the ground from the top of the building is 396 meter, if the building is 280 m high and The angle of depression from the top of a building to a point  on the ground is 45 degrees.

Step-by-step explanation:

The given is,

                 The angle of depression from the top of a building to a point  on the ground is 45 degrees.

                 Height of the building is 280 meter.

Step: 1

                 Given diagram is a right angled diagram,

                 For right angle triangle,

                              90° = 45° + 45°    

                                     = 90°  

                 Trignometric ratio,

                            sin ∅ = \frac{Opp}{Hyp}....................(1)

                For the above ratio take the bottom angle, that is angle of depression from the top of a building to a point  on the ground is 45 degrees.

                 Where, Opp side = 280 meters

                               Hyp side = x

                                           ∅ = 45°

                 Equation (1) becomes,

                                  sin 45° = \frac{280}{x}

                          0.70710678 =  \frac{280}{x}

                                            x =  \frac{280}{0.70710678}

                                            x = 395.979

               Distance between point on the ground from the top of the building,  x ≅ 396 meter                                                

                Trignometric ratio,

                                     cos ∅ = \frac{Adj}{Hyp}

                                   Cos 45 = \frac{Adj}{396}

                                         Adj = (0.70710678)(396)

              Bottom length, Adj = 280 meter

Result:

           The distance between point on the ground from the top of the building is 396 meter.

8 0
3 years ago
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