What did you say about that problem
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:
about 37.7 feet
Step-by-step explanation:
If the outside wheels are turning twice as fast, they go twice the distance in the same time. The distance they travel is proportional to the radius of the circle, so the outside circle must have twice the radius of the inside circle.
Adding 6 ft to the radius of the inside circle doubles the radius, so the inside circle's radius must be 6 feet. Then the circumference of the inside circle is ...
C = 2πr = 2π(6 ft) = 12π ft ≈ 37.7 ft
Answer:
True False True
Step-by-step explanation:
1. A circle has 360 degrees in its interior. 360 - 130 (this is given) degrees = 230 degrees. This means it's TRUE
2. The area of the shaded sector is the degrees in the central angle that contains the sector, multiplied by the area of the circle. This means that the area is pi*r^2*angle. The radius is 10, and the angle is 230 degrees, so the answer is 100*230/360 pi = 23000/360 pi, which simplifies to 575/9 pi. This is FALSE.
3. The area of the shaded sector is area of the circle - area of the shaded sector. The area of the circle is pi r^2, which is 100 pi. 100 pi - 575/9 pi = 325pi/9, so this is TRUE
Answer
i dont know
Step-by-step explanation:
i cant really see it