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3 years ago

Square root of 49/64 answered as a fraction

Mathematics

1 answer:

pshichka [43]3 years ago

3 0

Answer:

Hey there!

That would be 7/8

Let me know if this helps :)

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const2013 [10]

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3 years ago

You were told that the amount of time lapsed between consecutive trades on the New York Stock Exchange followed a normal distrib

uysha [10]

Answer:

Step-by-step explanation:

Given that that (X) the amount of time lapsed between consecutive trades on the New York Stock Exchange followed a normal distribution with a mean of 15 seconds.

i.e. X is normal with mean = 15 and unknown std deviation $\sigma$

Given that $P(X$

i.e. P( $z$

z=-1.475 (from normal table)

Hence $\frac{13-15}{\sigma}=-1.475\\\sigma = 1.356$

Using this we find P(X>17) = $P(Z>\frac{17-15}{1.356} \\=P(Z>1.475)\\=0.5-0.428\\=0.072$

6 0

3 years ago

Which line is perpendicular to y=5x-8?

Softa [21]

A is perpendicular because 5x flipped is -1/5x

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3 years ago

ILL BRAINLIST!!! DUE AT 9 plzzz ANSWRR!!! 7th grade!! :)))

marusya05 [52]

Answer: object 1 is traveling 30 minutes than object 2

Step-by-step explanation:

Q1- 70

Q2- 100

100-70=30

I hope that made sense.

4 0

3 years ago

WORTH 100 POINTS

guajiro [1.7K]

Answer:

The problem does not work.

Step-by-step explanation:

The plane with speed of 31 mph will cover 640 miles in $\frac{640}{31} = 20.64$ hours.

Now, it burns 5 gallons of gas every 3 minutes i.e. 0.05 hours.

So, it will burn in 20.64 hours $\frac{5 \times 20.64}{0.05} = 2064$ gallons.

Now, the helicopter with speed of 45 mph will cover 640 miles in $\frac{640}{45} = 14.22$ hours.

Now, it burns 7 gallons of gas every 5 minutes i.e. 0.083 hours.

So, it will burn in 14.22 hours $\frac{7 \times 14.22}{0.083} = 1194.48$ gallons.

But both of them starts with only 80 gallons of fuel.

Therefore, the problem does not work. (Answer)

4 0

4 years ago