Answer:
x = 4
Step-by-step explanation:
Sum of angles (in degrees) in a triangle = 180
so
60 + 70 + 12x + 2 = 180
Add like terms
132 + 12x = 180
subtract 132 from both sides
12x = 48
divide both sides by 12
x = 4
Answer:
48
Step-by-step explanation:
Given
4a² + 6a - 3(a + 4) + 15 ← distribute parenthesis
= 4a² + 6a - 3a - 12 + 15 ← collect like terms
= 4a² + 3a + 3 ← substitute a = 3 into the expression
= 4(3)² + 3(3) + 3
= 4(9) + 9 + 3
= 36 + 9 + 3
= 48
Answer:18
Step-by-step explanation:
Sin72=cosy
0.9511=cosy
Y=cos(inverse)0.9511
Y=18
Answer:
36 and 45
Step-by-step explanation:
Answer:
(1,-4)
Step-by-step explanation:
Hello!
In the image attached, I graphed the Linear Equations, and the solution is at the point of intersection of the two lines.
The point is on x-value 1 and y-value -4, so the solution is (1,-4).