2 years ago

HELP ME I NEED HELP QUICK

Mathematics

1 answer:

vova2212 [387]2 years ago

8 0

Answer:

Step-by-step explanation:

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I need help with this question. Please thanks

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Work out an estimate for 456.2-51<br> _______<br><br> 0.0512

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Derek uses a 136 cm flat steel bar that weighs 4 kg to make rack in the garage. Determine the weight of a 170 cm steel bar

Bumek [7]

The weight of a 170 cm steel bar will be 5 Kg

Step-by-step explanation:

Derek uses a 136 cm flat steel bar that weighs 4 kg to make rack in the garage.

1 kg = 1000 gm

So the weight of 1 cm steel bar will be $\frac{4 }{136}$ kg

Weight of 1 cm bar = $\frac{4000}{136}$ gm

Let the weight of a 170 cm steel bar will be $\frac{4000 }{136}$ × $170$ gm

⇒ $4000$ × $1.25$ gm

⇒ 5000 gm

⇒5 kg

Hence, the weight of a 170 cm steel bar will be 5 Kg

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2 years ago

together Alice & Mindy have saved $490 for a trip this summer. Amy has saved $54 more than Mindy. How much has each person s

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Alice saved 218 and mindy saved 218+54

Step-by-step explanation:

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A cell phone company has a basic monthly plan of $40 plus $0.45 for any minutes used over 700. Before receiving his statement, J

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Ok so we know he used over 700 because he was charged more than 40. Then we take the $8.10 and divide 0.45 into it. This then gives you 18 more minutes. Then add 18 to 700 and you get 718 min.

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