Let c be the chairs and t be the tables. This is a system of equations you are dealing with. The first equation tells us that 8 chairs (8c) plus 3 tables (3t) cost $38. So the equation is 8c + 3t = 38. The second equation tells us that 2 chairs (2c) and 5 tables (5t) cost $35. So that equation is 2c + 5t = $35. Solve this system any way you'd like. I used elimination and multiplied the second equation by -4 to get a new equation: -8c - 20t = -140. Now the 8c's eliminate one another leaving you with -17t = -102. Solving for t gives you t = 6. Now sub in that t value in either equation to give you that each chair costs $2.50
Answer:
30 degrees
Step-by-step explanation:
To convert radians to degrees, we multiply by 180 degrees/ pi
pi/6 * 180/pi
The pi's cancel
180/6 = 30
We are left with 30 degrees
Just figure out their max speed, the distance and just tell how fast the animal goes miles(inches, feet, etc) per hour(minutes, seconds, etc.) yw, that should help a bit 4 you
Answer:
when x = 3 1/3, y = 4.5
or
when x =3 , y = 5
Step-by-step explanation:
Here, we want to solve using substitution
xy = 15
let x = 15/y
Put this into the first equation;
3(15/y) + 2y = 19
45/y + 2y = 19
Multiply through by y
45 + 2y^2 = 19y
2y^2 -19y + 45 = 0
2y^2 - 10y - 9y + 45 = 0
2y(y-5) -9(y-5) = 0
(2y-9)(y-5) = 0
2y-9 = 0
or y-5 = 0
2y = 9 or y = 5
y = 9/2 or y = 5
y = 4.5 or y = 5
Recall;
x = 15/y
x = 15/4.5 or x = 15/5
x = 3 1/3 or x = 3
The E in Pemdas stands for exponents.