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lana66690 [7]
3 years ago
13

Which of the expressions below can be factored using the difference of squares method?

Mathematics
2 answers:
Alona [7]3 years ago
7 0
The difference of the squares method is a short-cut method that is expressed a2 - b2 = ( a + b ) *(a-b). In this case, a2 and b2 should be perfect squares in which a and b are the square roots. In this case, 100 and 49 are perfect squares, hence the answer is C. 
san4es73 [151]3 years ago
4 0
<span>100x2 - 49y2 is the answer</span>
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Find csc0<br><br> Please Help!!!!!
andreyandreev [35.5K]
<h3>Answer:  -5/4</h3>

=======================================================

Explanation:

The terminal point is at (x,y) = (3,-4)

Apply the pythagorean theorem to find that x^2+y^2 = r^2 solves to r = 5. This is the length of the hypotenuse.

Then we can determine the cosecant of the angle theta using the formula below

csc(theta) = hypotenuse/opposite

csc(theta) = r/y

csc(theta) = 5/(-4)

csc(theta) = -5/4

Side note: csc = 1/sin

7 0
3 years ago
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Please help asap! thx
vovikov84 [41]

Answer:

y = 0

Step-by-step explanation:

The given sinusoidal equation is y = 2 \cdot sin \left(\dfrac{\pi}{2} \cdot x + 3 \right)

The general form of the sin function is presented as follows;

y = A·sin(B·(x - C)) + D

Where;

A = The amplitude

The period, T = 2·π/B

The frequency, f = B/2·π

C = The horizontal shift

D = The vertical shift

By comparison with the given sine function, we have;

The amplitude, A = 2

The frequency, f = B/2·π = π/2/(2·π) = 1/4

The frequency, f = 1/4 Hz

C = The horizontal shift = 3/(π/2) = 6/π

The vertical shift, D = 0

Given that the mid line of the parent function, sin(x), is the line y = 0, and that the vertical shift is 0, the midline of the function, y = 2 \cdot sin \left(\dfrac{\pi}{2} \cdot x + 3 \right), is therefore, the line;

y = 0.

3 0
3 years ago
The science class is taking a trip to the science center. there are 20 students and an unknown number of adult chaperones going.
Alekssandra [29.7K]
The greatest number of adults who can chaperone
35-20 = 15
4 0
3 years ago
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Find how many centimeters are in 4.5 inches, you should
Inessa05 [86]

Answer:

4.5in=11.43cm

Step-by-step explanation:

4.5*2.54=11.43

3 0
3 years ago
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If 2p°and ( p+15)are a pair of complementary angles find them.​
Andrej [43]

Answer:

angles r 50°&40°

Step-by-step explanation:

  • 2p+p+15=90°
  • 3p=90°-15°
  • 3p=75°
  • p=75°/3
  • p=25°

2p=2×25=50°

p+15=25+15=40°

<h3>stay safe healthy and happy.</h3>
7 0
3 years ago
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