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Valentin [98]
3 years ago
15

Help asap please please

Mathematics
2 answers:
Gelneren [198K]3 years ago
7 0

Answer:

Find the unit rate, then multiply by 7

Step-by-step explanation:

Find the unit rate

35/5 = 7

Then multiply by the number of songs that we want to download

7*7

vfiekz [6]3 years ago
3 0

You know total time for 5 songs, so find the time for one song, which is the unit rate ( time for one song) then multiply the unit rate by number of songs you want to download.

The answer is:

By finding the unit rate and multiplying it by 7

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Which equation represents a line parallel to the line shown on the graph? On a coordinate plane, a line goes through (0, 8) and
dezoksy [38]

Answer:

  • B) y = negative 4 x + three

Step-by-step explanation:

<u>Find the slope of the line that goes through (0, 8) and (2, 0):</u>

  • m = (y₂ - y₁)/(x₂ - x₁)
  • m = (0 - 8) / (2 - 0) = -8/2 = -4

Parallel lines have equal slopes.

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2 years ago
On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º.
andrew-mc [135]

Answer:

There are 180 degrees in a triangle so it is 80 degrees

4 0
2 years ago
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To illustrate the effects of driving under the influence of alcohol, a police officer brought a DUI simulator to a local high sc
nexus9112 [7]

Answer:

Check the explanation

Step-by-step explanation:

Here we have to first of all carry out dependent sample t test. consequently wore goggles first was selected at random for the reason that the reaction time in an emergency taken with goggles would be greater than the amount of reaction time in an emergency taken with not so weakened vision. So that we will get the positive differences d = impaired - normal

b)

To find 95% confidence interval first we need to find sample mean and sample sd for difference d = impaired minus normal.

We can find it using excel that is in the first attached image below,

Therefore sample mean ( \bar{X}_{d} ) = 0.98

Sample sd ( \bar{S}_{d} ) = 0.3788

To find 95% Confidence interval we can use TI-84 calculator,

Press STAT ----> Scroll to TESTS ---- > Scroll down to 8: T Interval and hit enter.

Kindly check the attached image below.

Therefore we are 95% confident that mean difference in braking time with impaired vision and normal vision is between ( 0.6888 , 1.2712)

Conclusion : As both values in the interval are greater than 0 , mean difference impaired minus normal is not equal to 0

There is significant evidence that  there is a difference in braking time with impaired vision and normal vision at 95% confidence level .

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2 years ago
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skad [1K]
The answer may be $2,160.
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F(x) = (1/4)^x. for x = -3
Trava [24]
Plug in -3 for x into the equation.

(1/4)^-3

And solve

(1/4)^-3 = 64
7 0
2 years ago
Read 2 more answers
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