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4 years ago

Help with this math.

Mathematics

1 answer:

valentinak56 [21]4 years ago

6 0

Answer:

Step-by-step explanation:

Mean: Add them all up then divide that sum by how many there are.

Median: They are in number order, so that makes median and mode very very nice. For an odd number of points, you choose the middle point, for an even number of points (which we have) take the two and find the average of those two. That is, add the two up then divide them by two, it's basically taking their mean. since there are 20 you take the 10th and 11th numbers.

Mode: Again, super easy since they are in number order, just look for the number that appears the most. If none do, there is no mode. Hint, there is a number that appears twice.

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At a movie theater, at least 60% of the seats must be full to recover operating costs. On Thursday, 146 out of 200 seats are occ

Softa [21]

$1-\frac{146}{200}\\1-\frac{73}{200}\\1-0.73\\0.27\\0.27*200\\54$

54 seats

27 percent

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3 years ago

Solve the inequality 2 (m+3) +1 > 23

Rasek [7]

Answer:

m>8

Step-by-step explanation:

The first step will be to distribute the 2, so that the equation becomes 2m + 6 + 1 > 23.

From here we should combine like terms, which just means adding 6 and 1, so that the equation is now 2m+7>23. Now, we just subtract 7 on both sides, which brings leave us with 2m > 16.

Lastly dividing by 2 on both sides, the answer is m>8

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3 years ago

A sensor output was acquired for 32 seconds at a rate of 200 Hz and spectral analysis was performed using FFT. If the data set w

VashaNatasha [74]

Complete Question

A sensor output was acquired for 32 seconds at a rate of 200 Hz and spectral analysis was performed using FFT. If the data set was split into 5 segments (each 6.4 seconds long), what is the resulting:

a)F minimum

b) F maximum

c) Frequency resolution

Answer:

a) $Fmax=100Hz$

b) $Fmin=0Hz$

c) $F_r=0.0313$

Step-by-step explanation:

From the question we are told that:

Time $t=32sec$

Frequency $F=200Hz$

Segments $\mu=5$

Generally the equation for Frequency Range is mathematically given by

$Fmax=\frac{F}{2}$

$Fmax=100Hz$

Therefore

a) $Fmax=100Hz$

b) $Fmin=0Hz$

Generally the equation for Frequency Resolution is mathematically given by

$F_r=\frac{F}{N}$

Where

N=The Total dat points

N=Sampling Frequency *Time

$N=200*32$

$N=6400$

Therefore

$F_r=\frac{200}{6400}$

$F_r=0.0313$

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3 years ago

Which line has a constant of proportionality between y and x of 4/3

Licemer1 [7]

Answer:

Line A: constant of proportionality is 4/3

Step-by-step explanation:

The equation in question is y = (4/3)x, where (4/3) is the constant of proportionality as well s the slope of the line. The only line here that has a slope greater than 1 is the blue line (A).

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3 years ago

Read 2 more answers

-16-4 = ? 4.? = 4. So, -16-4=

PIT_PIT [208]

Answer:

It's -16-4

Step-by-step explanation:

Therefore its negative mins a neg so its like a debt mins a debt so it remains a debt.

Therefore its- 20

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3 years ago

Read 2 more answers