Mathematics, 26.06.2019 08:00 ecoagro1934

On the album "1989" by taylor swift, blank space is 12 seconds longer than shake it off. if the combined time of the two songs is 7 minutes and 30 seconds, now long is shake it off? give your answer in minutes and seconds.

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Answer from: heysonic91

Shake it off it 7 minutes and 18 seconds long

Step-by-step explanation:

Given :

Blank Space is 12 seconds longer than Shake It Off.

The combined time of the two songs is 7 minutes and 30 seconds.

To Find : The time of shake it off song

Solution :

Since the combined time = 7 minutes and 30 seconds.

Since 1 minute = 60 seconds

So, 7 minutes = 60*7= 420 second

So, 7 minutes 30 seconds = 420+30 = 450 seconds

So, the combined time = 450 seconds

Since blank space is 12 seconds longer.

So, length of shake it off song = 450-12 =438 seconds.

Since 60 seconds = 1 minute

So, 1 second = $\frac{1}{60}$

So, 438 second = $\frac{438}{60} = 7.3 minutes$

Since 1 minute = 60 seconds

So, 0.3 minutes = 0.3*60 =18 seconds

Thus 438 seconds = 7 minutes and 18 seconds.

Hence , Shake it off it 7 minutes and 18 seconds long

Answer from: ohana76

3 minutes and 39 seconds.

Step-by-step explanation:

Let x be the length of blank space and y be the length of shake it off.

We have been given that on the album "1989" by Taylor Swift, Blank Space is 12 seconds longer than Shake It Off. We can represent this information as:

x=y+12...(1)

We are also told that the combined time of the two songs is 7 minutes and 30 seconds.

1 minute = 60 seconds.

7 minutes = 60*7 seconds = 420 seconds

7 minutes and 30 seconds = (420+30) seconds = 450 seconds.

We can represent this information as:

x+y=450...(2)

We will use substitution method to solve our system of equations. Upon substituting equation (1) in equation (2) we will get,

y+12+y=450

y+12+y-12=450-12

y+y=450-12

2y=438

Let us divide both sides of our equation by 2.

$\frac{2y}{2}=\frac{438}{2}$

y=219

Now let us convert our answer in minutes and seconds.

219 seconds = 3 minutes and 39 seconds.

Therefore, Shake it off is 3 minutes and 39 seconds long.

Answer from: Quest

1. y=32. x=-13. n=-40

Answer from: Quest

Intersecting secant-tangent theorem states that if a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.so to break it down: 1. pq acts as the tangent and ps as the secant with an intersection at p.sr = 21rp = 3x + 3pq = 4x + 4following to equation: tangent squared = the two segments multiplied by each otherso (4x + 4) ^ 2 = (3x + 3) • (21) simplifies to 16x^2 - 31x - 47 = 0 or (16x - 47)(x + 1) x = -1 or x = 47/162. pq acts as the tangent and ps as the secant with an intersection at p (again! )sr = 16rp = xpq = 15(15) ^ 2 = 16 • x225 = 16xx = 225/163. the interesting chords are proportional to each other so a ratio is possible to set up: ap dp 10 3 + x = = —— = pc pb 8 xcross multiple to get 10x = (3 + x)(8)x = 12

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On the album "1989" by taylor swift, blank space is 12 seconds longer than shake it off. if the comb...