How to subtract this question 91.49-0.7

2 answers:

7 0

1. Line up the decimals
2. Subtract normally as if there were no decimals
3. Move the decimal directly down.
The answer is 90.79

Ilya [14]4 years ago

4 0

We can start by leaving the 9 in the hundreths place alone as this is not affected. We can then subtract 7 from 4 for the tenths place. This gives -3. As this is a negative number, we need to subtract 1 from the next place (the units) and then take another 3 from the tenths place. This gives us an answer of 90.79 (where both the 9's are unaffected).

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4 years ago

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Juli2301 [7.4K]

Let
e = Gibson Explorer’s = 20
v = Gibson Flying V’s

So, our problem is

Maximize
Money = 80e + 5v

Subject to
0 ≤ e ≤ 20
0 ≤ v ≤ 20
0 ≤ e + v ≤ 30

In order to solve this problem, we look at the graph (attached), and find the value of Money =80e + 5v at corner points to find the maximum value of money.

(e,v)=(0,0) >> Money = 80e+5v = 80*0+5*0 = 0
(e,v)=(0,20) >> Money = 80e+5v = 80*0+5*20 = 100
(e,v)=(20,0) >> Money = 80e+5v = 80*20+5*0 = 1600
(e,v)=(20,10) >> Money = 80e+5v = 80*20+5*10 = 1650 (maximum)
(e,v)=(10,20) >> Money = 80e+5v = 80*10+5*20 = 900

So Bob can make the most money = $1,650 when he makes and sell
e = Gibson Explorer’s = 20
v = Gibson Flying V’s = 10