Answer:
90°
Step-by-step explanation:
Angles in a triangle add up to 180°
The two angles you have add up to 90°
You need another 90° to make it 180°
Slope: (y2-y1)/(x2-x1)
(-13-(-7)) = -6
-6/3 = -2
x - 3 = 3, x = 6
The solution: x = 6
Answer:
B, C,
Step-by-step explanation:
A - This is addition. Finding a product refers to multiplication, so this is not correct.
B - This is multiplication of 5x × 5y, exactly two factors, so this is correct.
C - This is multiplication of (x-y) × (x+y). Each equation inside the parenthesis equals one factor, so this is multiplication of exactly two factors. This answer is also correct.
D - This is multiplication of three factors, x × y × z, and is not correct.
Answer:
Richard is twenty-six and Teo is ten.
Step-by-step explanation:
Let x = Richard's age and y = Teo's age
x = 2y + 6
(2y + 6) + y = 36
3y + 6 = 36
-6 -6
3y = 30
y = 10
x = 2(10) + 6
x = 20 + 6
x = 26
Richard is 26
Teo is 10