Answer: A △ABC such that the bisectors of ∠ABC and ∠ACB meet at a point O.
To prove :
∠BOC=90
o
+
2
1
∠A
Step-by-step explanation: In △BOC,
∠1+∠2+∠BOC=180
o
In △ABC,
∠A+∠B+∠C=180
o
∠A+2(∠1)+2(∠2)=180
o
2
∠A
+∠1+∠2=90
o
∠1+∠2=90
o
−
2
∠A
Let the number of History books be x. Then:-
x + x - 59 = 343
2x = 402
x = 201
So there are 201 History books and (201 - 59) = 142 Chemistry books.
Answer:
5/3
Step-by-step explanation:
3y = 5x - 6
y = 5/3x - g
using y = mx + b
gradient = m
gradient = 5/3
Answer:
The 4th bubble
Step-by-step explanation:
Combine like terms
Answer:
6
Step-by-step explanation:
There is no perfect square root of 40 but when calculated it would be 6.33 which rounds down to 6.