47°
B.
37°
C.
53°
D.
180°
The correct answer is 370. A system of equations can be used, where h represents the number of calories in a hamburger and f represents the number of calories in an order of fries. The equation 2 h plus 3 f equals 1,700 represents the fact that 2 hamburgers and 3 orders of fries contain a total of 1700 calories, and the equation h equals f plus 50 represents the fact that one hamburger contains 50 more calories than an order of fries. Substituting f plus 50 for h in 2 h plus 3 f equals 1,700 gives 2, parenthesis, f plus 50, close parenthesis, plus 3 f, equals 1,700. This equation can be solved as follows:
2 f plus 100 plus 3 f equals 1,700
5 f plus 100 equals 1,700
5 f equals 1,600
f equals 320
The number of calories in an order of fries is 320, so the number of calories in a hamburger is 50 more than 320, or 370.
2. 120 + 25x = 45x
3. 100 - 6x = 160 - 10x
plz help me.
Answer:
The average was 259.24 in 1996.
Step-by-step explanation:
In order to find the year that the average, "y", is 259.24 we need to apply this value on the given expression, as done below:
The average was 259.24 after 26 years, therefore it was in 1996.
First , you need to use elimination method .In the elimination method you either add or subtract the equations to get an equation in one variable .
I hope that's help !