Answer:
sum of angles in a quadrilateral is 360
Step-by-step explanation:
3x-15 +3x+15+y+30+D=360
hope that explanation helps
The reciprocal of -13/7 should be -7/13
Answer:
The number is 5
Step-by-step explanation:
Let x be the number
3x+5+x = 25
Combine like terms
4x+5 = 25
Subtract 5 from each side
4x+5-5 = 25-5
4x = 20
Divide by 4
4x/4 = 20/4
x = 5
Answer:
31 Minutes
Step-by-step explanation:
4.78 = 0.15 + 0.58
0.15m = 4.78 - 0.58
m = 4.78 - 0.58 divided by 0.15 = 28 minutes
So in total we have 28 + 3 = 31 minutes