Let x be the unknown number. 5 times that number means 5x. If we subtract 189 from this number, we get 5x-189.
Also, half the original number is x/2.
The two operations output the same result, so we have the following equation:
Subtract x/2 from both sides and add 189 to both sides to get
Multiply both sides by 2 to get
Finally, divide both sides by 9:
Is there any more details? Is the triangle an isosceles? Equilateral?
The distributive property applies.
x + 2x + 13x = (1 + 2 + 13)x = 16x
Answer:
B) 2w + 3c = 9.45 AND 4w + 5c = 14.75
Step-by-step explanation:
Let us represent:
Number of water bottles = w
Number of bag of chips = c
Hence:
Samaia buys two water bottles and three bags of chips for $9.45.
2w + 3c = 9.45......Equation 1
Abdullah goes to the same store and buys four water bottles, as Samaia, and five bags of chips, same as ones Samaia bought, for $14.75.
4w + 5c = 14.75......Equation 2
Which choice below accurately represents a system of equations, w for water bottles and c for chips, for this scenario?
Option B) 2w + 3c = 9.45 AND 4w + 5c = 14.75 is the correct option.
914.4 divided by 3 is 304.8. (304.8 millimeters in a foot)