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goldenfox [79]
3 years ago
12

Alicia buys a 5-pound bag of rocks for a fish tank. She uses 2 3/8 pounds for a small fish bowl How much is left?​

Mathematics
1 answer:
Likurg_2 [28]3 years ago
5 0

Answer:

2.625 pounds are left or 2 5/8

Step-by-step explanation:

So if your going to be subtracting a fraction from a whole number your going to have to consider the fact that the whole number can be divided up into that fraction.

So in this equation we are subtracting 2 3/8 from 5, we are going to take one from 5 and make it into a fraction so we can subtract:

5 = 4 8/8

Now we subtract 2 3/8 from 4 8/8

4 8/8 - 2 3/8 = 2 5/8

so there's your answer 2 5/8 pounds are left over, but if you wanted the answer in a decimal you would divide 5 by 8:

5/8 = 0.625

you then add 0.625 to 2:

2 + 0.625 = 2.625

And that is also your answer: 2.625 lbs. were left over.

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\sqrt{5x} + √6 = √9


The first step is to get \sqrt{5x} by itself. We can do this by subtracting \sqrt{6} from each side, and simplifying \sqrt{9}


\sqrt{5x} = 3 - \sqrt{6}


Now we square both sides


5x = (3 - \sqrt{6})²


Using the formula (a - b)² = a² -2ab + b², (3 - \sqrt{6})² = 15 - 6\sqrt{6}


5x = 15 - 6\sqrt{6}


x = \frac{15 - 6\sqrt{6}}{5}

8 0
3 years ago
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Jia is tiling a floor. The floor is a square with side
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Answer:

36 tiles

Step-by-step explanation:

First, find area of the square floor knowing the formula as;

Area= s^{2}

where s= side of a square.

If one side of the floor is 12 feet, then Area= 12^{2} = 144ft^{2}

Next, find the area of each tile using the same formula and given s=2 feet;

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To find the number of tiles needed to cover entire floor, divide area of the floor by area of one tile; 144 / 4 = 36 tiles

5 0
3 years ago
The factor tree for 1,764 is shown.
Rashid [163]

Answer:

42

Step-by-step explanation:

               |--------------1764------------|

               |                                      |

              2                           |-------882-----------|

                                           |                            |

                                          2               |--------441------|

                                                           |                      |

                                                   |------9-----|        |----49---|

                                                   |               |        |             |

                                                  3              3      7            7

From the factor tree we see that

1764 = 2^2 \times 3^3 \times 7^2

Now we need to find the square root of 1764.

\sqrt{1764} = \sqrt{2^2 \times 3^2 \times 7^2} = \sqrt{(2 \times 3 \times 7)^2} = \sqrt{(42)^2} = 42

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Vinil7 [7]

Answer:

A - 270°

Step-by-step explanation:

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90-60-30=0/. 4-2=2 and 7-2=5

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