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3 years ago

Solve the system graphically: b x−y=0 2x+3y=−5 x= y=

Mathematics

1 answer:

vlabodo [156]3 years ago

6 0

Answer:

(-1,-1)

Step-by-step explanation:

x=y

2x+3x=-5

x=-1

y=-1

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Use the area model to find the product of 28×32

Rudiy27

When u times 28 by 32 you will get 896..I'm not sure if this is what u were asking for but if so here you go :)

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3 years ago

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In the diagram below segment DEF is shown (since all three letters are shown, they are collinear). If

monitta

Answer:

x = 4

Step-by-step explanation:

Given

DE = 3x + 2, EF = x + 5, DF = 23

As per segment addition postulate

DE + EF = DF

Substituting values:

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3 years ago

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3 years ago

Suppose a change of coordinates T:R2→R2 from the uv-plane to the xy-plane is given by x=4v−2u−3, y=−1+5u+4v.

mrs_skeptik [129]

Answer:

a) ∣∣∂(x,y)/∂(u,v)∣∣ = 28

b)Area = 197.12

Step-by-step explanation:

a) Find the absolute value of the determinant of the Jacobian

Change of coordinates

x = 4v -2u-3

$\frac{dx}{du} = -2$

$\frac{dx}{dv} = 4$

y = -1+5u+4v

$\frac{dy}{du} = 5$

$\frac{dy}{dv} = 4$

Then

∣∣∂(x,y)/∂(u,v)∣∣=∣det | =| $\begin{array}{cc}-2 & 4 \\ 5 & 4\end{array}$ |

∣∣∂(x,y)/∂(u,v)∣∣ = ∣(-2)(4)-(5)(4)∣ = 28

b) The area of the region in the xy -plane is the area of the region in the uv-plane multiplies by the absolute value of the determinant of the Jacobian.

Thus

Area = (7.04)(28)

Area = 197.12

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