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vazorg [7]
3 years ago
14

A notebook costs $6.50 plus sales tax. After sales tax, the notebook is $6.89. What is the sales tax rate?

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
8 0

Answer:

6% tax

Step-by-step explanation:

6.89=6.5x

x=1.06

stellarik [79]3 years ago
7 0

Answer

6%

Step-by-step explanation:

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Please I need the answer only​
lawyer [7]

Answer:

w = 1.6

Step-by-step explanation:

Given w varies inversely as \sqrt{x} then the equation relating them is

w = \frac{k}{\sqrt{x} } ← k is the constant of variation

To find k use the condition when x = 4, w = 4

k = w\sqrt{x} = 4 × \sqrt{4} = 4 × 2 = 8

w = \frac{8}{\sqrt{x} } ← equation of variation

When x = 25, then

w = \frac{8}{\sqrt{25} } = \frac{8}{5} = 1.6

6 0
3 years ago
Find the maximum value of the function <br><img src="https://tex.z-dn.net/?f=%20-%208%20%2B%202x%20-%204x%20%5E%7B2%7D%20" id="T
Mkey [24]

Answer:

x = \frac{-b}{2a}

Step-by-step explanation:

Start by using P.E.M.D.A.S.

-8 is a 2x is b and -4x^{2} is c.

7 0
4 years ago
5/7 = x/11 round your answer to the nearest tenth.
Scilla [17]

Answer:

7.9

Step-by-step explanation:

Multiply both sides of the equation by 11. This cancels out the fraction so 11 * 5/7 = x

lmk if I misunderstood the question or need to elaborate

6 0
3 years ago
Read 2 more answers
What is 100x82727=x?
Nadusha1986 [10]

Answer:

8272700

Step-by-step explanation:

Just add two zeros in the end

4 0
2 years ago
Read 2 more answers
Brandon has 32 stamps. he wants to display the stamps in rows,with the same n
AleksandrR [38]
Okay, let's work this out...
What we know:
-32 stamps in all
- rows (horizontal)
- same # in each
What we "want to know" :
- # of combinations (different)
Problem Solving :
This is actually very easy its just the words than get ya!
1st : we need to figure out the factors of 32...
In other words, we need to figure out _x_=32 and how many different combinations and ways there are!
Note:(* means multiplication)
#1: What are the factors of 32?
32: 1*32 , 2*16 , 4*8
32: 32*1 , 16*2 , 8*4
The factors (not including 1 are 2,4,8,16)
Now, as you can see, there are 4 ways to get 32 as shown first.
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That ¦ is 1 way with 16 in 2 rows. Basic multiplication, 16*2=32 or 16+16=32.
But, this is also a way,
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Now there should be 2 in each row and 16 rows. Again 2*16=32 or 2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2=32
That's two ways so far.
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Another way which is 4 rows with 8 in each.
4*8=32 or 8+8+8+8=32
But, this is also a way,
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Now that is 8 rows with 4 in each. 8*4=32 or 4+4+4+4+4+4+4+4=32
That was our fourth way.
Again NOT including 1. If you include 1 then there will be 6 ways but aside from that there are 4 ways.
I hope that helped I worked hard typing this all for you. Any questions just ask!
3 0
3 years ago
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