19-h-h=-13 solve for h

Does anyone know of a Line Plot Creator I can use? Super simple.

Give an example of multiplying a negative and a positive

two pools are being drained. To start, the first pool had 3100 liters of water and the second had 3472 liters of water. Water is being drained from the first pool at of 21 liters per minute.

Albert says these two systems are similar #1 8x+9y=48 12x+5y=21 #2 8x+9y=48. - 8.5y=-51 Are they similar?

Find the equation of the line that is parallel to y=4/3x-8 that goes through (9,16)

Rahzel wants to determine how much gasoline he and his wife use in a month. He calculated that he used 78 1/3 gallons of gas last month. Rahzel's wife used 41 3/8 gallons of gas last month. How much total gas did Rahzel and his wife use last month.

To win the small county lottery, one must correctly select 3 numbers from 30 numbers. the order in which the selection is made does not matter. how many different selections are possible?

Naya Ironside is a Viking chieftain that is approaching the entrance of a river. The river is defended by guard towers on each riverbank.

Leonard solved this problem. Daryn paid $358.80 for shipping costs to ship 130 boxes for his company. How much did Daryn pay to ship each box? Leonard thought the answer was $2.76. Is Leonard's answer reasonable? A.

Which property can be used to remove parentheses in the expression 1.7 (x+9)