Answer:
13.5 is your answer
Step-by-step explanation:
Richard is 14 years old and Teo is 6 years old.
Step-by-step explanation:
Let,
Richard's age = x
Teo's age = y
Combined age = 20 years
According to given statement;
x+y=20 Eqn 1
x = 2y+2 Eqn 2
Putting value of x from Eqn 2 in Eqn 1

Dividing both sides by 3

Putting y=6 in Eqn 2

Richard is 14 years old and Teo is 6 years old.
Keywords: linear equation, substitution method
Learn more about substitution method at:
#LearnwithBrainly
Answer:
Angle BCA = 70
Angle CAB = 20
Step-by-step explanation:
Not sure what angle you meant, so I'll give you all of them <3
Angle BCA = 70 degrees, because If two angles form a line, they add up to 180. (110+x=180, x = 70)
Angle CAB = 20 degrees, because there are 180 degrees in a triangle, so 90+70+x=180, x = 20
Hope it helps <3
Thought i answered this one already
a)
m∠2 = 180 - m∠1 - <span>m∠3
</span><span>m∠2 = 180 - 79 - 27
</span><span>m∠2 = 74
b)
</span><span>m∠4 = m3 = 27 (vertical angles)
</span>
c)
m∠6 = 180 - m∠4 -<span>m∠5
</span><span>m∠6 = 180 -27 - 82
</span><span>m∠6 = 71</span>
It’s so cool I don’t understand
Explanation