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Elza [17]
3 years ago
13

In the figure,(p)parallel(q) and (r)pparallel(s). Match each pair of congruent angles with the reason for their congruency.

Mathematics
2 answers:
klio [65]3 years ago
7 0
Corresponding angles for parallel lines r and s cut by transversal q. Corresponding angles are congruent angles. 
1 and 9
2 and 10
3 and 11
4 and 12

Corresponding angles for parallel lines p and q cut by transversal s. Corresponding angles are congruent angles. 
11 and 15
9 and 13
12 and 16
10 and 14

Corresponding angles for parallel lines p and q cut by transversal r. Corresponding angles are congruent angles. 
1 and 5
3 and 7
2 and 6
4 and 8

Linear pair theorem. These 2 angles are equal to 180°
∠1 + ∠2 = 180
∠3 + ∠4 = 180
∠9 + ∠10 = 180
∠11 + ∠12 = 180
∠5 + ∠6 = 180
∠7 + ∠8 = 180
∠13 + ∠14 = 180
∠15 + ∠16 = 180
∠1 + ∠3 = 180
∠2 + ∠4 = 180
∠9 + ∠11 =180
∠10 + ∠12 = 180
∠5 + ∠7 = 180
∠6 + ∠8 = 180
∠13 + ∠15 = 180
∠14 + ∠16 = 180

Vertical angles theorem. Vertical angles are congruent.
1 and 4
2 and 3
9 and 12 
10 and 11
5 and 8
6 and 7
13 and 16
14 and 15



Mariana [72]3 years ago
5 0

Answer:

∠1≅∠5 by Corresponding angles for parallel line p and q cut by traversal r

∠5≅∠13 by Corresponding angles for parallel line r and s cut by traversal q

∠10≅∠14 by Corresponding angles for parallel line p and q cut by traversal s

∠13≅∠16 by Vertical angles theorem

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Ira Lisetskai [31]

Answer:

$58.50

Step-by-step explanation:

It is given that the student council pays

For per french fry = $0.85

For per soda fry = $1.20

Discount on the combo of  fries and soda = $0.75

Total revenue for one combo = $0.85 + $1.20 - $0.75 = $1.30

Since the total revenue for one combo is $1.30, therefore the total revenue for 45 combo is

Total revenue for 45 combo = 45 × $1.30 = $58.50

Therefore, they will make $58.50 if they sell 45 combos.

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Write an equation in slope-intercept form for the line that satisfies the following condition.
juin [17]

Answer:

d. y= 5x+18

Step-by-step explanation:

y=mx+b is slope intercept form

Now we plug in the information given to us which is slope(m) is 5 and a point (x,y) which is (2,28).

So by substituting we get 28=5(2)+b

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AB=8 and CD =40 find EB ,BC and AC
SIZIF [17.4K]

Answer:

EB=20, BC=8, AC=16

Step-by-step explanation:

The symbols indicate that:

AB=BC  and AE=ED

EB and CD are parallels

AB=BC=8

AC= AB+BC

AC= 8+8

AC=16

To find EB we can use the Cosine Law

For the upper triangle x=∡EAB:

EB^2 = AB^2 + AE^2 -2*AB*AE*Cosx

AB*AE*Cosx= -(EB^2-AB^2 - AE^2)/2 (Part I)

For de big triangle:

DC^2= AC^2+AD^2 -2AC*AD*Cosx

Also:

AC=2*AB

AD=2*AE

DC^2= (2*AB)^2 + (2*AE)^2 -2(2*AB)(2*AE)*Cosx

DC^2= 4*AB^2 +4*AE^2- 8*AB*AE*Cosx

AB*AE*Cosx =-(DC^2-4*AB^2 -4*AE^2)/8 (Part II)

Part I= Part II

-(EB^2-AB^2 - AE^2)/2= -(DC^2-4*AB^2 -4*AE^2)/8

Extracting EB:

EB^2=DC^2/4

EB=DC/2

EB=40/2

EB=20

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