Answer:
t=40
Step-by-step explanation:
The sum of all angles in a triangle will always equal 180°. This means that:
(2t-42)+(4t-49)+(2t-49) = 180°
Let's solve this equation!
(2t-42)+(4t-49)+(2t-49) = 180
First we simplify what's on the left side:
2t-42+4t-49+2t-49 = 180
2t+4t+2t-42-49-49 = 180
8t-140 = 180
*Add 140 to both sides
8t = 180+140
8t = 320
Divide both sides by 8 to know what t means:
t = 320/8
t = 40
In a - 3 = 15, the value of a HAS to be 18.
In a - 3 is greater than or equal to 15, the value of a is any value that is 18 or higher.
Kevin ran 8 miles rounded to the nearest tenth
I ussually think of them as arrows telling me where to go.
if it is > you go ----->
if it is < you go <------
Answer:
The explanation is given below with the diagram.
Step-by-step explanation:
Given:
Δ ABC is an Isosceles triangle with base AB.
D is the midpoint of AB
∴ AD = BD
To Prove:

Proof:
Isosceles triangle property:
If Δ ABC is an Isosceles triangle with base AB, then the two sides are congruent and the base angles are congruent.


