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attashe74 [19]
3 years ago
9

Please help I rlly need it

Mathematics
2 answers:
kozerog [31]3 years ago
7 0

Answer:

a)78

b)82.95

Step-by-step explanation:

To get the amount something is marked up you just need to multiply it by

1+0.(the%)

so in this case you multiply 60 by 1.30 to get 78

To get a discount you just have to do the same but without the +1

so 88*0.15

should get you the discount amount (13.2)

which you subtract from the original number (88-13.2 = 74.8)

now to get sales tax you would multiply the 79 by 0.05 which is 3.95

and add that to the total of 78.75 since sales tax applies AFTER coupons

Dmitry_Shevchenko [17]3 years ago
6 0
A) 60 • .30 = 18
60 + 18 = $78

B) 88 • .15 = 13.20
88 - 13.20 = 74.8
74.8 • .05 = 3.74
74.8 + 3.74 = $78.54
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Answer:

The number is 133\frac{1}{3}

Step-by-step explanation:

If something is 30% of a whole it means that if whe divide the whole into 100 and take 30, you will get this number. In order to get the whole we need to divide it my the 40 by \frac{3}{10} and so we get.....

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3 years ago
A lit house worker is tracking a boat that is 2.1 km south from her. She is also tracking a boat that is 3.5 km from the tower l
vlada-n [284]

Answer:

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Step-by-step explanation:

We have to find the distance  between two boat

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Please help. urgent. calculate the value of: E= x^3+1/x^3 if 1/x+x=4<br>(picture below)
Lelu [443]

Answer:

52

Step-by-step explanation:

1. We see if we cube both sides of the second equation, then it looks more similar to the first equation (E = x^3 + 1/x^3)

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2. Now we rearrange, because we see x^3 + 1/x^3 in the first equation in this equation

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3. We look at 3x + 3/x and see that it looks like the second equation, so we try factoring it

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we know x + 1/x = 4, so 3(x + 1/x) = 12

x^3 + 1/x^3 +12 = 64

4. Now we subtract and get our answer

x^3 + 1/x^3 = 52

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3 years ago
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