Hey!
Let p = cost of a pen
<span>Let n = cost of a notebook </span>
<span>The info in the question leads to two equations: </span>
<span>1) 2p + 3n = 5.55 </span>
<span>2) p + 2n = 3.50 </span>
<span>Multiply equation 2) by 2 to get the new system of equations </span>
<span>1a) 2p + 3n = 5.55 </span>
<span>2a) 2p + 4n = 7.00 </span>
<span>Subtract equation 1a) from equation 2a) to get </span>
<span>n = 1.45 ...................... that's the cost of one notebook </span>
<span>~~~~~~~~ </span>
<span>To check, you could go on to figure out p, which turns out to be 0.60 . Put in those values of n and p into the original equations to verify.</span>
Hope this helps! ~Nadia~
Answer:(5,8)
Step-by-step explanation: you just move5 to the rigth to get 3 and move 8 down to get -1
Answer:
26m
Step-by-step explanation:
8m x 2 = 16
5m x 2 = 10
16m + 10m = 26m of wires
Step-by-step explanation:
A. Range = highest quantity – lowest quantity
140000 – 122000
18000
B. 125000 + 128000+122000+133000+140000/5
Ans: 129600
