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Harrizon [31]
3 years ago
12

This question is 11 points

Mathematics
2 answers:
kipiarov [429]3 years ago
8 0

Answer:

A = 60

B = 55

C = 65

Step-by-step explanation:

The sum of the angles of a triangle is 180

A + B+C = 180

x+ x-5 + 65 = 180

Combine like terms

2x+60 =180

Subtract 60 from each side

2x= 180-60

2x= 120

Divide by 2

2x/2 = 120/2

x= 60

A = 60

B = 60-5= 55

C = 65

Readme [11.4K]3 years ago
6 0

Answer:

Angle A: 60°

Angle B: 55°

Angle C: 65°

Step-by-step explanation:

180° = 65° + x + (x-5)

Subtract 65° from both sides

115° = x+(x-5)

115° = 2x-5

Add 5 to both sides

120° = 2x

Divide both sides by 2

x = 60°

Angle A: 60°

Angle B: 55°

Angle C: 65°

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What will be angle COD If: angle COD minus angle KOD equals 61degrees and angle COD minus angle KOC equals 53degrees?
kenny6666 [7]

Use algebra for such problems
let, Angle COD = x
Angle KOD = y
Angle KPC = z
Given ,. x - y = 61° ( Equation 1 )
x - z = 53° ( Equation 2 )
Subtract 1st equation from 2nd and you'll get :

z - y = 8° ( Equation 3 )
Now since , x + y + z = 180° ( Equation 4 )
Add Equation 3 to Equation 4 and you'll get
x + 2z = 188° ( Equation 5)
From Equation 2 we know that , x -z = 53°
or, x = 53° + z ( Equation 6 )
Put this value of 'x' in Equation 5 and solve for z. you'll get :
(53° + z) + 2z = 188°
or
3z = 188 - 53 = 135°
solving for z we get
z = 45°
put this value of z in Equation 5
x + ( 2 x 45° ) = 188°
or
x = 188° - 90° = 98°
hence , Angle COD = 98°














5 0
3 years ago
If f(x) = 2x + 3 and g(x) = x^2 + 1,find f(g(3)).<br> A.) 23<br> B.) 47<br> C.) 82<br> D.) 90
marta [7]
The answer is A). 23. 
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Step-by-step explanation:

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