1 car - 4 wheels
1 motorcycle - 2 wheels

x - number of cars
y - number of motorcycles

so, there are 70 vehicles: x + y = 70
and all togeather they've got 258 wheels: 4*x + 2*y = 258
because each car has 4 wheels, so all car wheels = 4*x,
likewise 2*y for motorcycles

x + y = 70 /* 4
4 x + 2y = 258

4 x + 4 y = 280 (R1)
4 x + 2y = 258 (R2)

2y = 22 /:2 it is R1 - R2
x = 70 - y

y = 11 /motorcycles
x = 70 - 11 = 59 /cars

check:
59 + 11 = 70 ok
59 * 4 + 11 * 2 = 236 + 22 = 258 ok

5 0

3 years ago

Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest:

hichkok12 [17]

Answer:

Step-by-step explanation:

0.36|6=0.366

8 0

3 years ago

On a coordinate plane, a line goes through points (1, negative 1) and (2, 4). This graph displays a linear function. What is the

Nikolay [14]

Bueno yo no sé djdjxsdcv