Answer:
4 pencil & 2 ruler = $8
2 pencil & 4 ruler = $10
let the no. of Pencil be X and no. of ruler be Y
4x + 2y = 8
2x + 4y= 10
solving the equation by elimination method,
multiplying eq 2 with 2
4x + 2y = 8
4x + 8y = 20
subtracting,
- 6 y = -12
y = 2
2x + 4(2)= 10
2x + 8 = 10
2x = 10 - 8
2x = 2
x = 1
Cost of 3 ruler + 3 pencil
= 3(1) + 3(2)
= 3 + 6
= 9
<h2 /><h2>= $9</h2>
Answer:
-525
Step-by-step explanation:
please mark brainlyest
Answer:
im broke so i robbed u
Step-by-step explanation:
<span>To solve this we need two conversion factors: 1yd = 3ft, and 1min = 60s. To convert the units, you need to manipulate the conversion factor so that the units in the denominator cancel the units in the denominator: (39ft/min) * (1yd/3ft) = 13yd/min. The units of ft cancel out leaving 13yd/min. (13yd/min) * (1min/60s) = 0.217yd/s</span>
