How do I find the answer for this equation 20x+15y = 330, when x+y = 18

When all three bulbs are turned on at once, the bulbs flicker, but then the fuse blows and all the lights go out. This is because during the brief period of "flickering," the current in the main line was 1.2 amps + 1.2 amps + 1.2 amps = 3.6 amps.

125hours equal days equal hours

Identify the independent and dependent variables. Dave is conducting an experiment to see how many inches of rainfall occurs each month of the year. A. Independent: location of the rain Dependent: number of days of the month B.

The cable company charges $30 to install new supplies at your house. Each month the cable bill is $75. Which equation models the total cost for cable over time?

Omar has 2and 3/4 cups of dough to make dumplings. if he uses 3/16 cup of dough for each dumpling, how many dumplings can omar make

What is the graph of y = x - 3 (shown below) translated up 2 units?

Ben bowled 143 and 216 in his first two games. What must he bowl in his third game to have an average of at least 170?

Estimate the value of ^50

Daniel worked for 213 hours and earned $18.20. How much would he make if he worked for 514 hours?

Is 4 a solution of 2x = 8