syedriv2020 syedriv2020
  • 03-06-2020
  • Mathematics
contestada

Mongoose McHuffy has a bike shop. He only has bicycles and tricycles in stock. In total he has 21 items in stock with a total of 51 wheels. Can you tell Mongoose McHuffy how many bicycles and tricycles he has?

Respuesta :

Аноним Аноним
  • 03-06-2020

Answer:

12 bikes

9 tricycles

Step-by-step explanation:

x+y=21

2x+3y=51

x=-y+21

2(-y+21)+3y=51

-2y+42+3y=51

y+42=51

y=9

x=12

Answer Link

Otras preguntas

Helpppppppppppppppppp
△SZO≅△AVL. If m, angle, O, equals, 16, degreesm∠O=16 ∘ and m, angle, Z, equals, 144, degreesm∠Z=144 ∘ , find m, angle, Am∠A.
Write out at least three steps on how you solve for side AB
Why does Johnny tell Ponyboy he could never use a gun?
Do iron nails rust more in salt water than in vinegar? Please answer ASAP.
Iodine-131 is used to treat a hyperactive thyroid gland. the half-life of iodine 131 is 8.02 d. If a hospital receives a 215.25 g shipment of iodine 131, how mu
If AC = 32 and BC = 24, find AB.
2. I invited Jeff to come for lunch but he wasn't hungry. (he / already / eat / lunch) ​
5x-4y=17 2x-3y=11 Solve with elimination method
Please help verify the identity of cos (x+ -5pi/4) = -sqrt2/2 (cos x + sin x)