The answer to this question is A: 72 x 20 + 72 x 3
Answer:
Yes
Step-by-step explanation:
1 is 4.50
4.50*2=9
<em>4.50+4.50</em>
<em>(4+4) + (0.50+0.50)</em>
4.50*4=18.00
<em>4.50+4.50+4.50+4.50</em>
<em>(4+4+4+4) + (0.50+0.50+0.50+0.50)</em>
4.50*7= 31.50
<em>4.50+4.50+4.50+4.50+4.50+4.50+4.50 0.50</em>
<em>(4+4+4+4+4+4+4) + (0.50+0.50+0.50+0.50+0.50+0.50+0.50)</em>
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Sorry if I confused you more when I broke it down. I just remembered the easiest way I learned
Answer:
b=-2aH
Step-by-step explanation:
H=-b/2a
Apply cross multiplication
H×2a=-b
2aH=-b
In the question you are to find positive b not negative b so you have to take negative b to the left hand side of the equation to become positive b and take 2aH to the right hand side to become -2aH
therefore b=-2aH
Answer:
3x-3 i think
Step-by-step explanation:
9x-6x = 3x 5-8 = -3