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

7 0

3 years ago

Can someone help?<br><br> Find the mean of the data in the bar chart below.

KatRina [158]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Algebra question(s), please help!!!!

Angelina_Jolie [31]

Answer:

For part A

10.08x=y

Step-by-step explanation:

252/25=10.08

x=number of hours=25

y=how much earned=252

10.08(25)=252

3 0

3 years ago

Simplify expression -(20 +d)

Verizon [17]

Answer:

-d-20

Step-by-step explanation:

Hope this helps!

5 0

2 years ago