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iren [92.7K]
3 years ago
5

sabine and jack know that 1 kilogram = 2.2 pounds and 1 pound = 0.454 kilogram. they each write an expression to convert 50 poun

ds to kilogram. is either student correct? explain how you know and find the correct answer to nearest kilogram.
Mathematics
1 answer:
zzz [600]3 years ago
5 0

Answer:

50 pounds =  22.7 kilograms

Step-by-step explanation:

Yes both are correct

Sabine :

2.2 pounds =   1 kilogram

     1 pound = 1/ 2.2 kilogram = 0.454 kilogram

50 pounds = 50 * 0.454 =22.7 kilograms

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Ber [7]

Hello from MrBillDoesMath!

Answer:

1/2

Discussion:

6/12 =                            => as 12 = 6*2

6 /( 6*2)  =                      => cancel 6's in num and denom.

1/2

Thank you,

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6 0
3 years ago
Lynn has a box of crayons.
Scrat [10]

Answer:

<em>There are 72 crayons in the box</em>

Step-by-step explanation:

<u>Fractions</u>

To solve this problem we'll manage numbers as fractions to keep the precision up to the end of it.

Lynn has a box of crayons. It's given 4/9 of the crayons are blue. The remaining crayons are:

1-\frac{4}{9}=\frac{5}{9}

From that portion, 65% are red, or equivalently, 35% are yellow.

We write 35% as a fraction:

\displaystyle 35\%=\frac{35}{100}=\frac{7}{20}

Thus, the portion of yellow crayons is:

\displaystyle \frac{7}{20}\cdot \frac{5}{9}=\frac{7}{36}

This fraction of x crayons is equal to 14, thus:

\displaystyle x=\frac{14}{\frac{7}{36}}=14\cdot\frac{36}{7}

x = 72

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7 0
3 years ago
6 sisters share 5 pizzas equally
Crazy boy [7]
# shared / # being shared = 5/6 Each sister gets 5/6 of a pizza.
8 0
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Use Cramers Rule to solve the system <br> 2x - 3y = 11<br> -6x + 8y = 34
Nastasia [14]

Step-by-step explanation:

given :

2x - 3y = 11

-6x + 8y = 34

find : the solutions of the system by using Cramers Rule.

solutions:

in the matrix 2x2 form =>

[ 2 -3] [x] [11]

=

[-6 8] [ y] [34]

D =

| 2 -3 |

|-6 8 |

= 8×2 - (-3) (-6)

= 16-18 = -2

Dx = | 11 -3 |

| 34 8 |

= 11×8 - (-3) (34)

= 88 + 102

= 190

Dy = | 2 11 |

|-6 34 |

= 2×34 - (-6) (11)

= 68 + 66

= 134

x = Dx/D = 190/-2 = -95

y = Dy/D = 134/-2 = -67

the solutions = {-95, -67}

8 0
3 years ago
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Answer:

Step-by-step explanation:

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