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JulsSmile [24]
3 years ago
12

PLEASE last one to graduate!!

Mathematics
1 answer:
daser333 [38]3 years ago
8 0

Answer:

y=4\sin(\frac{3}{2}x+\frac{2\pi}{3})

Step-by-step explanation:

The graph of the cosine function can be obtained by shifting the sine function to the left by \frac{\pi}{2} units.

The given cosine function is:

y=4\cos(\frac{3}{2}x+\frac{\pi}{6})

When we shift this function to the left by \frac{\pi}{2} units, we obtain a sine function

y=4\sin(\frac{3}{2}x+\frac{\pi}{6}+\frac{\pi}{2})

y=4\sin(\frac{3}{2}x+\frac{2\pi}{3})

These two functions have the same graph

The second option is correct.

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Which figure could be the result of dilating this triangle with a scale factor greater than 1? On a coordinate plane, a triangle
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Answer:

3rd answer choice

Step-by-step explanation:

7 0
3 years ago
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The area in square feet of a rectangular field is x^2-100x+2400. The width, in feet is x-40. What is the length, in feet?
sattari [20]

Answer:

x-60

Step-by-step explanation:

You have to factor out the quadratic.

You know that one of the factors is x-40.

To factor:

Find a number that when added to -40, gives you -100, and also when multiplied, gives you 2400.

That such number is -60.

Add an x before it, and you get (x-60)

3 0
3 years ago
Your job in a company is to fill quart-size bottles of oil from a full 30-gallon oil drum. Then you are to pack 8 quarts in a ca
emmainna [20.7K]

Answer: 15 cases

Step-by-step explanation:

1 gallon = 4 quarts

Hence from 30 gallon oil drum, 30 x 4 = 120 quart-size bottles can be filled.

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6 0
3 years ago
Two in-line skaters, Nell and Kristin, start from the same point and skate in the same direction. Nell skates at 16 miles per ho
Paha777 [63]
First, we count how far reached the Nell:
3,5 * 16 = 56 miles

Secondly, we count how far reached the Kristin:
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The results that Kristin about seven miles driven more than Nell.
8 0
3 years ago
On a journey of 600 km, a train was delayed 1 hour and 30 min after having covered 1/4 of the way. To arrive on time at the dest
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Answer:

10 hours

Step-by-step explanation:

(150/x) + 1.5 + (450/(x+15)) = 600/x

Multiply through by x(x + 15):

150(x + 15) + 1.5x(x + 15) + 450x = 600(x + 15)

150x + 2250 + 1.5x^2 + 22.5x + 450x = 600x + 9000

150x + 2250 + 1.5x^2 + 22.5x + 450x - 600x - 9000 = 0

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x = (-22.5 +/- sqrt(22.5^2 - 4(1.5)(-6750))) / (2*1.5)

x = (-22.5 +/- sqrt(506.25 + 40500)) / 3

x = (-22.5 +/- sqrt(41006.25)) / 3

x = (-22.5 +/- 202.5) / 3

x = 180/3 or -225/3

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But a negative number doesn't make sense, so therefore x = 60, so the journey took 600/60 = 10  hours.

6 0
3 years ago
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