Let the 2 digit number be ab remembering that ab=10a+b
a=b-4...........equation 1
10a+b=3(a+b)+2........... equation 2
take a's value in equation 1 and plug it into equation 2
10(b-4)+b=3(b-4)+3b+2
5b=30
b=6 units digit
a=6-4=2 tens unit
number is 26
The answer you already have selected in the image is correct. Even eyeballing it, you can see that the smaller shape fits into the larger shape 4 times.
The equation looks like this:
26=x*3.5+8.50
where x is the number of pen you bought.
We solve it like this:
first, we subtract 8.50 from both sides:
17.50 =3.5*x
now we divide both sides by 3.5:
5=x
so you purchased 5 pens.
Answer:
Graph 1. Parallel
Graph 2. Neither
Graph 3. Neither
Graph 4. Perpendicular
Step-by-step explanation:
Hey!!!
Answers:
1. {d}
2. {a,d,g,f}
3.{g,e,f}
please see attached picture for full solution
Hope it helps
Good luck on your assignment
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