-4-9 =-13
4-9=-5
-4+(-9): +positive sign and -negative sign=- negative sign
-4-9=-13
-4+9=5
4+9=13
Answer:
-4+ (-9)
-4+(-9)
Step-by-step explanation:
-4-9=-13 and-4+(-9)=-13
which means they're equivalent to each other
6
2
Answer: (B) SinA = 4/5
Step-by-step explanation: Sine= O/H or opposite of hypotenuse so in regards to the triangle opposite is 28 and hypotenuse 35 or 28/35 which also equals 4/5
For 80 people, Elena would need
14 packs of plates and 10 packs of cups
She would have at least 80 of each.
I am not completely sure of this, sorry if wrong.
80 people
8 cups per pack
6 plates per pack
8, 16, 24, 32, 40, 48, 56, 64, 72, 80
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84
LCM (least common multiple) = 24
so you add 5.5 from 19 to get the answer