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vfiekz [6]
3 years ago
5

To the nearest tenth, find the approximate distance between points B and D.

Mathematics
2 answers:
ivolga24 [154]3 years ago
7 0

Answer:

Distance = 9.8 units

Step-by-step explanation:

Point B  is (-2,5) and point D is (2,-4)

LEts find the distance between these points. USe distance formula

D=\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}

(-2,5)  is (x1,y1)  and (2,-4) is (x2,y2)

Plug in the values and find out the distance

D=\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}

D=\sqrt{(2+2)^2 +(-4-5)^2}

D=\sqrt{(4)^2 +(-9)^2}

D=\sqrt{97}

Distance = 9.8 units

o-na [289]3 years ago
5 0
The answer is A. 9.8
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Answer:

The number of each type in the pack is 5 of $0.45 comic books and 9 of $0.75 comic books

Step-by-step explanation:

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied.

In this case, the unknowns or unknown variables are:

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y: number of $ 0.75 comic books

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On the other side, the number of $0.45 comic books is 4 more than the number of $0.75 comic books.  Then the equation that represents this situation is:

x+4=y

The system of equations to solve is:

\left \{ {{x*0.45+y*0.75=9} \atop {x+4=y}} \right.

One way to solve a system of equations is the substitution method, which consists of solving one of the unknowns in one of the equations and substituting its value in the next.

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x*0.45 + (x+4)*0.75= 9

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<u><em>The number of each type in the pack is 5 of $0.45 comic books and 9 of $0.75 comic books</em></u>

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