Maggie made 3kg of fudge. She and her friends

Ответ:

blazecarley

01.04.2021

1 1/4 kg

Step-by-step explanation:

Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?

The kg of fudge thay maggie and her friends ate is calculated as:

Initial kg of fudge - kg of fudge left

= 3 kg - 1 3/4 kg

3/1 kg - 7/4 kg

Lowest common denominator = 4

= 12 - 7/4 kg

= 5/4 kg

= 1 1/4 kg

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artemiscrock1350

17.11.2020

The options are

$(A)8^{-1} (B)9^{-2} (C)\dfrac{9^8}{9^4} (D)\frac{9^8}{9^{10}} (E)9^{-6}\cdot 9^3 (F)9^5 \cdot 9^{-7$

$(B)9^{-2} \\ (D)\frac{9^8}{9^{10}} \\ (F)9^5 \cdot 9^{-7$

Step-by-step explanation:

Given the fraction $\dfrac{1}{81}$

$\dfrac{1}{81}=\dfrac{1}{9^2}=9^{-2$

Any option that gives a form equivalent to any of the above is valid.

Option B= $9^{-2}$ which is equivalent

In Option D: $\frac{9^8}{9^10}=9^{8-10}=9^{-2}$

In Option F: $9^5 \cdot 9^{-7}=9^{5-7}=9^{-2}$

Therefore, Options B, D and F are equivalent.

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