Answer:
(-8,4)
Step-by-step explanation:
Given: 2x-3y=-28 and x+6y=16
solve for a variable and then substitute back into other equation
x + 6y = 16
x = 16 - 6y; now use this in the other equation
2x - 3y = -28; substitute into x
2(16 - 6y) - 3y = -28; distribute 2
32 - 12y - 3y = -28; combine y's
32 - 15y = -28; isolate 15y
32 + 28 = 15y; add the numbers
60 = 15y; divide by 15
y = 4
Now use this to plug into other equation
x + 6y = 16; y=4
x + 6(4) = 16;
x + 24 = 16; subtract 24 from both sides
x = -8
The sum of interior angels of a pentagon is 550
Answer:
y=-18
Step-by-step explanation:
Answer:
The clown has 363 yellow balloons
Step-by-step explanation:
The clown has 165 red balloons.
Let us say the clown has x yellow balloons
The question tells us that this value is 198 balloons less than the yellow ones.
This means that if we add 198 to the number of red balloons we should get x - the number of yellow ones.
x = 165 +198 = 363 balloons
Therefore, the clown has 363 yellow balloons
