The key idea here is that we can't have half a pack (the store owner would be really angry if you cut the packs!). therefore we are really finding the least common multiple of 14 and 5. to find lcm is really hard to explain with the limited technology on this website. i highly recommend you search up ladder method online. i can, however, tell you that the lcm of 14 and 5 is 70 so 70 is the minimum NUMBER of markers (not packs) that blaaine would have to buy.
Answer:
the second choice
Step-by-step explanation:
2 has to be divided into 8 parts in total which is shown by option B
Answer:
x=6 and y=2
Step-by-step explanation:
3x+5y=28
−4x−5y=−34
Add these equations to eliminate y:
−x=−6
Then solve −x=−6 for x:
−x=−6
(Divide both sides by -1)
x=6
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
3x+5y=28
Substitute 6 for x in 3x+5y=28:
(3)(6)+5y=28
5y+18=28 (Simplify both sides of the equation)
5y+18+−18=28+−18 (Add -18 to both sides)
5y=10
(Divide both sides by 5)
y=2
Answer:
The answer to your problem is x=-1,y=9
Step-by-step explanation:
(-1,9)
Multiply bottom equation by -3 to add and eliminate y’s.
So...
5x-15y=10
+-9x+15y=18
You get -4x=28 so x=-7
Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3
Check in other equation
3(-7)-5(-3)=
-21+15=-6
So x= -7 and y= -3