<h2>It's <u>1849</u></h2>
I'll explain how I found it without actual multiplication,
So,
Hope this will help....
Square root 50 does not belong....all of the other numbers are rational numbers. square root 50 is irrational.
Answer:
see explanation
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°, thus
∠1 = 180° - (72 + 57)° = 180° - 129° = 51°
The right angle at the left vertex is composed of 72° and ∠2, thus
∠2 = 90° - 72° = 18°
57° and ∠3 form a straight angle and are supplementary, thus
∠3 = 180° - 57° = 123°
∠4 = 180° - (∠2 + ∠3 ) ← sum of angles in a triangle
∠4 = 180° - (18 + 123)° = 180° - 141° = 39°
10 lb
well I could be wrong
-5 and -4.
-5 times -4 is 20 while adding -5 and -4 it equals -9. (don't be very harsh if i got this wrong)
