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3 years ago

11

What expression can be used for estimating 868÷28?

1 answer:

telo118 [61]3 years ago

3 0

So u should just do this 868÷28=31 ..ok

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Which is the value of this expression when p=-2 and q=-1?

saul85 [17]

Answer:

D. 4

Step-by-step explanation:

$[(p^2) (q^{-3}) ]^{-2}.[(p)^{-3}(q)^5] ^{-2}\\\\=[(p^2) (q^{-3}) \times(p)^{-3}(q)^5 ]^{-2}\\\\=[(p^{2}) \times(p)^{-3} \times (q^{-3}) \times(q)^5 ]^{-2}\\\\=[(p^{2-3}) \times (q^{5-3}) ]^{-2}\\\\=[(p^{-1}) \times (q^{2}) ]^{-2}\\\\=(p^{-1\times (-2)}) \times (q^{2\times (-2) }) \\\\=p^{2}\times q^{-4} \\\\= \frac{p^2}{q^4}\\\\= \frac{(-2)^2}{(-1)^4}\\\\= \frac{4}{1}\\\\= 4$

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3 years ago

What is the length of a side of a cube with a volume of 216 in3?<br><br><br> inches

yuradex [85]

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4 years ago

b) In a exam, Biraj got 350 marks and failed by 20 marks lf the percentageof pass marks is 40%, what is the full marks

gogolik [260]

Answer:

925 marks.

Step-by-step explanation:

AS Biraj had 20 less marks then the 40% pass mark must be 350+20 = 370.

370 is equivalent to 40%

So 100% = 100*370 / 40

= 925 marks.

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3 years ago

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The following are scores made on a math test. 80, 90, 90, 85, 60, 70, 75, 85, 90, 60, 80 What is the mode of these scores?

puteri [66]

Answer: 90

Step-by-step explanation: The mode is the number that appears most frequently in a data set.

Notice that the score 90 appears more than any other

number in the set.

This means that 90 is the mode.

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3 years ago

This one is for question #7

Varvara68 [4.7K]

Answer:

B

Step-by-step explanation:

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3 years ago

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