$x-number\ of\ stools\\y-number\ of\ chairs\\\\ \left \{ {{y+x=16} \atop {3x+4y=55}} \right. \\\\From\ first\ equation:\\\\y=16-x\\\\Substract\ to\ second\ equation:\\\\3x+4(16-x)=55\\3x+64-4x=55\\3x-4x=55-64\\-x=-9\\x=9\\\\y=16-9=7\\\\ \left \{ {{y=7} \atop {x=9}} \right.$

7 0

3 years ago

A triangular window pane has a base of 30 inches and a height of 24 inches.What is the area of the window pane?

densk [106]

54 or it 180 i got 54 by adding 30 and 24in and got 180 by multiplying

8 0

2 years ago

Read 2 more answers

Which situation would not be represented by the integer -9?

Aneli [31]

The correct answer would be

A football pass of 9 yards

6 0

2 years ago