30 + 4x + 2 + 180 - (8 + 6x) = 180;The sum of all angles in a triangle is 180
32 + 4x - 8 - 6x = 0
2x = 24
x = 12
Bolded part, explanation: On a straight line, the sum of all angles is 180 degrees. We have the value of outside the triangle, the exterior angle, which, when is added with interior angle, gives 180 degrees. So we substract 8 + 6x from 180, that's the third angle in a triangle.
Answer:
Step-by-step explanation:
im not sure but i think its 5
Answer:
a²+9a+18
Step-by-step explanation:
axa+ax3+6xa+6x3
Answer:
Step-by-step explanation:
BASE + 3x = 22.85.....................equation 1
BASE + 10x = 40..........................equation 2
BASE = 40 - 10x
NOW SUBSTITUTE (40-10x) FOR BASE IN THE FIRST EQUATION
40 - 10x + 3x = 22.85
-7x = 22.85 - 40
-7x = -17.15
x = -17.15/-7
x = $2.45 IS THE PRICE FOR EACH POUND.
BASE + 10 x 2.45=40
BASE + 24.50=40
BASE = 40-24.50
BASE = 15.50 IS THE BASE PRICE FOR THE DELIVERY.
PROOF
15.50+3*2.45=22.85
15.50+7.35=22.85
22.85=22.85
The answer is C. This is because the formula to find the perimeter is Length+length+width+width. So, 1.2 + 1.2 + 0.6 + 0.6 = 3.6
