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KengaRu [80]
3 years ago
6

If a=15 and b=6, then 9a²-48ab+64b²=?​

Mathematics
1 answer:
photoshop1234 [79]3 years ago
5 0

Answer:

9

Step-by-step explanation:

Value of 'a' = 15

Value of 'b' = 6

Simplifying the expression given in question,

9a^{2} -48ab+64b^{2}

=> (3a)^{2} - 2*3a*8b+(8b)^{2}

=>(3a-8b)^{2}

Putting 'a' & 'b' in above expression ,

(3a-8b)^{2} = (3*15-8*6)^{2} = (45-48)^{2}  = (-3)^{2} =9

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Which option gives you more snack when spending the same amount of money?
Oksi-84 [34.3K]

Answer:

Spending the same amount of money, Cheetos gives more snacks than Doritos, since with the same money more ounces of the product will be obtained.

Step-by-step explanation:

Given that the Doritos package costs $ 4.39 and contains 11.5 ounces of product, the price of each ounce of said snack comes from the following calculation:

4.39 / 11.5 = X

0.38 = X

Therefore, each ounce of Doritos costs $ 0.38.

In turn, the Cheetos package costs $ 3.24 and contains 9.75 ounces of snacks, so its price per ounce is obtained through the following calculation:

3.24 / 9.75 = X

0.33 = X

Thus, each ounce of Cheetos costs $ 0.33.

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3 years ago
The local newspaper has letters to the editor from 80 people. If this number represents 2​% of all of the​ newspaper's readers,
FrozenT [24]

Answer:

The local newspaper has letters to the editor from 80 people. If this number represents 2% of all of the newspaper's readers, how many readers does the newspaper have?

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2%ofx=80

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3 years ago
If two fair dice are rolled, what is the conditional probability that the first one lands on 6 given that the sum of the dice is
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So we need to know the likelihood for each sum. the first sum is 2, and there is no way for one of the die to equal 6 if the sum is 2, therefore the probability is 0. The same applies when the sum is 3, 4, 5, and 6. Once the sum gets to 7, you must evaluate all possible options.
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For 8, the options are 2&6, 3&5, 4&4, 5&3, 6&2. so of the 5 choices, there is only one option, therefore the probability is 1/5.
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kolbaska11 [484]

Answer:

≈8.59 to 8.6 cm

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2 years ago
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