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Leno4ka [110]
2 years ago
12

Use substitution to solve the system. y = 2x+8 -3x+2y = 13

Mathematics
1 answer:
Lisa [10]2 years ago
4 0

Step-by-step explanation:

Use substitution to solve the system.

y = 2x+8______equation1

-3x+2y = 13______equation2

sub y into equation 2

-3x+2(2x+8)=13

-3x+4x+16=13

x+16=13

x=13-16

x=-3

sub X into equation 1

y=2x+8

y=2(-3)+8

y= -6+8

y=2

x= -3 y=2

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2 years ago
In the figure below, ∠DEC ≅ ∠DCE, ∠B ≅ ∠F, and segment DF is congruent to segment BD . Point C is the point of intersection betw
Rzqust [24]

Answer:

Step-by-step explanation:

Given:

∠DCE ≅ ∠DEC

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To prove:

ΔABC ≅ ΔGFE

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                  Statements                            Reasons

1). ∠DCE ≅ ∠DEC                                1). Given

2). ∠ACB ≅ ∠GEF                               2). Vertically opposite angles to the

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3). ∠B ≅ ∠F                                         3). Given

4). DB ≅ DF                                         4). Given

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2 years ago
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so substitute what you know

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divide by 3.14
351 = r^2(4.3333)
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81 = r^2
r = 9 inches


6 0
3 years ago
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