Answer:
°
Step-by-step explanation:
(The sum of angles on a triangle is
°)

(Angles of a straight line sums to
°)

Elimination can be used to find the value of one variable:



Now, the value of
can be found by using substitution:



I hope this helps :)
Answer:
ab, ac, bc
Step-by-step explanation:
a=30, b=60, c=180-(30+60) = 180-90=90
Answer:
t < 10.2
Step-by-step explanation:
Step 1: Add 6.2 to both sides.
Therefore, the answer is t < 10.2.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Answer:
see explanation
Step-by-step explanation:
Given
2BD = 7BT , then
2(d - b ) = 7(t - b) ← distribute both sides
2d - 2b = 7t - 7b ( add 7b to both sides )
2d + 5b = 7t, thus
2
+ 5
= 7t
+
= 7t
= 7t , thus
t = 
= ![\left[\begin{array}{ccc}3\\5\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%5C%5C5%5C%5C%5Cend%7Barray%7D%5Cright%5D)
Hence T = (3, 5 )