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Otrada [13]
3 years ago
15

Which step in this problem is incorrect ?

Mathematics
1 answer:
shepuryov [24]3 years ago
3 0
I need to write at least 20 charachers,soooooo...
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Which method would be the easiest way to solve the system
Makovka662 [10]
Elimination would be the best
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36% of what number is 18?
QveST [7]
Let the no. be x
A/Q
=> 36 × x /100 = 18
=> x = 18 × 100 / 36
=> x = 50
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3 years ago
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Solve the following system. x squared / 25 + y squared / 100 = 1 x squared + y squared = 25
umka2103 [35]

Answer :

  • \frac{1}{100} (4 {x}^{2}  +  {y}^{2} )

  • \frac{dy}{dx}  =  \frac{ - x}{y}

8 0
4 years ago
3cis(5pi/4) in polar form
madreJ [45]
Rectangular form:
z = -2.1213203-2.1213203i

Angle notation (phasor):
z = 3 ∠ -135°

Polar form:
z = 3 × (cos (-135°) + i sin (-135°))

Exponential form:
z = 3 × ei (-0.75) = 3 × ei (-3π/4)

Polar coordinates:
r = |z| = 3 ... magnitude (modulus, absolute value)
θ = arg z = -2.3561945 rad = -135° = -0.75π = -3π/4 rad ... angle (argument or phase)

Cartesian coordinates:
Cartesian form of imaginary number: z = -2.1213203-2.1213203i
Real part: x = Re z = -2.121
Imaginary part: y = Im z = -2.12132034
8 0
3 years ago
Solve -5(3n + 4) = 40.
Sveta_85 [38]
N=-4
Distribute the -5
-15n-20=40
-15n=60
n=-4

3 0
2 years ago
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