(x, y ) = (- 6, 3 )
Since both equations express y in terms of x, we can equate them
2x + 15 = -
x + 1
( add
x to both sides )
x + 15 = 1 ( subtract 15 from both sides )
x = - 14
( multiply both sides by 3 and divide by 7 )
x = ( 3 × - 14 )/7 = - 6
substitute x = - 6 into either of the 2 equations for y- coordinate )
y = ( 2 × - 6 ) + 15 = 3
solution : (x, y ) = ( - 6, 3 )
Answer:
The number of number of bags of snacks = m = 176
The number of beverages supplied = m + 19 = 176 +9 = 185
Step-by-step explanation:
Let us assume the number of bags of snacks = m
So, the number of beverages supplied = m + 19
Total number of items supplied = 371
⇒ Number of (snacks + beverages) supplied= 371
⇒ m + (m +19) = 371
or, 2 m = 371 - 19 = 352
or, m = 352 / 2 = 176
⇒ m = 176
Hence the number of number of bags of snacks = m = 176
So, the number of beverages supplied = m + 19 = 176 +9 = 185
The answer is 60 because a triangle = 180