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Over [174]
3 years ago
14

A student claims that 8^3 •8^-5 is greater than 1..

Mathematics
1 answer:
zhenek [66]3 years ago
8 0
Ok, so if you do the math.. 8³ •8^-5 =512.0000305
So, in conclusion... the student is correct..
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Ralph buys a desk that regularly sells for $250 and a desk chair that regularly sells for $145. both items are on sale at 15% of
Lunna [17]
C) (0.85 + x/100)(250+145) does not give the correct answer.

Explanation
A) works; adding the two costs together is 250+145=395.  We multiply this by 0.85 because 100%-15%=85%=0.85.  We also have x% tax, which is represented by x/100, added to 100% of the value, or 1.00.  Altogether this gives us 
395(0.85)(1+x/100) = 395(0.85 + (0.85x/100)) = 395(0.85) + 395(0.85x/100)
= 395(0.85) + 395(0.0085x)
B) works; we have 250+145 for the original price; we have 85% = 0.85 of the value; we also have 100% + x%, which is (100+x)/100.
C) does not work; (0.85+x/100)(395) does not take into consideration that you are finding the tax after taking the 85%.  This will simplify out to
0.85*395 + (x/100)(395) = 335.75 + 395x/100 = 335.75 + 3.95x, which is too much.
D) works; simplifying the expression from A, we have 395(0.85) + 395(0.0085x) = 335.75 + 3.3575x.
6 0
3 years ago
Three less than the product of 6 and a number is 45. What is the number?
strojnjashka [21]

Answer: 8

Step-by-step explanation:

6x-3=45

6x=48

x=8

5 0
2 years ago
art supplies in washington DC cost 28 dollars if the sales tax is 6 percent what was the total cost of supplies
vova2212 [387]
(28 : 100) *6 = 1.68 (tax)

28 + 1.68 = 29.68 (total cost)
5 0
3 years ago
Juan is a teacher who has an annual salary of 65,798. how has to pay an income tax of 5%. What is the amount of state income tax
charle [14.2K]
He has to pay $3,289.90
7 0
2 years ago
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KonstantinChe [14]

Answer:

<h2>Sorry I couldn't find it.</h2>

Step-by-step explanation:

<h3>:((((((((((((((((((((((</h3>
3 0
2 years ago
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