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3 years ago

Use estimation to place the decimal in the product to make the correct product

Mathematics

1 answer:

umka2103 [35]3 years ago

3 0

Answer:

It is based on how many decimal places are in the equation.

40.5 /3 = 13.5

2.52 / 0.6=4.2

150.88 / 4= 37.72

1.54 /7 = .22

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Please help ASAP! Correct answer only! This assignment is due today.

astra-53 [7]

Answer:

<em>Probability ≈ 0.0714</em>

Step-by-step explanation:

Consider permutation and combination;

$Total Combinations - 8C4,\\8C4 = 8! / 4! * ( 8 - 4 )!,\\8 * 7 * 6 * 5 / 4!,\\\\Total Combinations = 70,\\\\Combinations of Dance Classes - 5C4,\\5C4 = 5! / 4! * ( 5 - 4 )!,\\5 * 4 * 3 * 2 * 1 / 4 * 3 * 2 * 1,\\\\Dance Classes = 5,\\\\Probability - 5 / 70 = 0.0714,\\Conclusion; Probability = ( About ) 0.0714$

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3 years ago

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations.

allsm [11]

Answer:

Step-by-step explanation:

5+12-2+7

17-2+7

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4 years ago

I need to know what the answer is to 4/9 - 1/12.

masha68 [24]

You get a common denominator. It's 36. Then multiply accordingly to get 16/36-3/36 = 13/36. Hope this helps.

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4 years ago

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3 years ago

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Guess the rule and add the next number in the sequence.<br> 1, 5, 13, 25, 41, ?

WINSTONCH [101]

Suspect: we start adding 4, later 8, 12, 16...

Therefore, the next number is 41 + 20 = 61.

Now, we try to guess the rule.

Note that, the numbers that we add are multiples of 4. Try to write the sequence in a different way like this:

1, 1 +4, (1+4) +8, ((1+4)+8)+12, (((1+4)+8)+12) +16, ...

1, 1+4, 1 + 4(1+2), 1 + 4(1+2+3), 1+ 4(1+2+3+4)...

You must to know that 1+2+3+...+ n = n(n+1)/2

Then, the nth numbers of the sequence must to be 1 + 4n(n+1)/2 = 1+2n(n+1) = a_n

Check the formula:

n = 0 then a_0 = 1+ 0

n=1 then a_1 = 1 +2(2) = 5

n=2 then a_2 = 1 +2(2)(3) = 13

n=3 then a_3 = 1 +2(3)(4) = 25

n=4 then a_4 = 1 +2(4)(5) = 41

n=5 then a_5 = 1 +2(5)(6) = 61

....

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3 years ago