Answer:
x =42
Step-by-step explanation:
x/7 =6
Multiply each side by 7 to isolate x
x/7 *7 = 6*7
x =42
Answer:
15
Step-by-step explanation:
6/10=9/x
cross multiply
6x=9*10
6x=90
x=90/6x=15
Answer:
1. Isosceles Triangle
2. ∠D = 160°
Step-by-step explanation:
1.
7x + 5 + x + 20 + 2x + 5 = 180 (all angles in a triangle add up to 180)
10x = 150
x = 15°
∠A = 7x + 5
sub x = 15°
∠A = 7x + 5
∠A = 120°
∠B = x + 20
x = 15
∠B = 35
∠C = 2x + 5
x = 15
∠C = 35
Base angles are the same, so this triangle is isosceles
2.
3x + (2x - 1) + (x + 3) + (3x - 3) + (x - 2) = 540 (all angles in a 5-sided polygon equals 540°)
10x = 540 + 1 - 3 + 3 + 2
10x = 543
x = 54.3
∠D = 3x - 3
x = 54.3
∠D = 159.9
if you round it, it would about 160°
Answer:
x = -3
Step-by-step explanation:
to solve this equation you should first find the LCD or least common denominator for 2 and 6
the LCD is 6
so you should multiply each side by six
3x + 15 - x - 3 = 6
now combine like terms
2x + 12 = 6
now subtract both sides by 12
2x = -6
lastly divide everything by 2
x = -3
that is your answer
Answer:
c I hope this helps and have a good day