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3 years ago

Please help thanks thanks thanks ty

Mathematics

1 answer:

Archy [21]3 years ago

3 0

Answer:

104 degrees

Step-by-step explanation:

First let's start by finding Angle DGC. Since Angle FGD and DGC are a linear pair, Angle DGC = 180-90 = 90 degrees.

Next we need to find GDC

Angles in a triangle add up to 180 degrees therefore...

Angle GDC + DCG + DGC = 180

Plug in the values we found into the equation

Angle GDC + 37 + 90 = 180

Angle GDC + 127 = 180

Angle GDC = 53

Therefore Angle ADC = 53 + 51 = 104 degrees

Since ABCD is a parallelogram, then opposite angles are equal therefore...

Angle B = 104 degrees

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Andreas93 [3]

Answer:

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Step-by-step explanation:

Given the equation:

y''' + 9y' = 0

The characteristic equation :

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Solving for r, we get r = 0 and r = ± 3i

The general equation for such equation is :

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Given:

y(0) = 6

Thus, Applying in the above equation, we get

6 = C₁ + C₂ .......................................................1

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Thus, Applying in the above equation, we get

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y'' = -9C₂cos 3x - 9C₃sin 3x

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y''(0) = 18

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18 = -9C₂

or,

C₂ = -2

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3 years ago

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3 years ago

Read 2 more answers

A sells to b an item at 15% profit. B sells the same item to c at 20% profit. If c pays $1656 for it. What is the price at which

andrew11 [14]

Answer:

The price at which A bought the item is $1200.

Step-by-step explanation:

Suppose, the price at which A bought the item is $x$ dollar.

A sells the item to B at 15% profit. That means, the selling price to B $= x+(0.15*x)=1.15x$ dollar.

B sells the same item to C at 20% profit. That means, the selling price to C $= 1.15x+(1.15x*0.20)=1.38x$ dollar.

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3 years ago