Answer:
<em>m∠C = 30° </em>
Step-by-step explanation:
If ΔADB is an equilateral, then m∠A = m∠ADB = m∠DBA = 60°
If ΔDBC isosceles with DB ≅ BC, then m∠C = m∠BDC ;
m∠C + m∠BDC = m∠DBA = 60° ⇒ <em>m∠C = 30°</em>
Answer:
3 and 7/10
Step-by-step explanation: convert how much daria walked in the morning to a denominator of 10 and then add
Answer:
y=x+1
or x=y-1
Step-by-step explanation:
Answer:
<h2><em><u>ᎪꪀsωꫀᏒ</u></em></h2>
➪-263
Step-by-step explanation:
-3x²-20
-3(-9)²-20
-3(81)-20
-243-20
-263
Answer:
a= -6
Step-by-step explanation:
Given
a=2+3a+10
In order to find the value of a, we have to isolate a on a single side of the equation
So,
subtracting 3a from both sides
a-3a = 2+10+3a-3a
=>a-3a=12
=> -2a = 12
Dividing both sides by -2
=> -2a/-2 = 12/-2
=> a = -6
The value of a in the given equation is -6 ..