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faltersainse [42]
3 years ago
7

A certain backpack costs $22, and there is 4% sales tax. What is one way to determine what the amount of sales tax will be? Sele

ct from the drop-down menus to correctly complete the statement. 1% of $22 is $ Choose... , so 4% of $22 is $ Choose... .
Mathematics
1 answer:
Mademuasel [1]3 years ago
8 0

Answer:

$0.88

Step-by-step explanation:

cost per 1% = 22 ÷ 100 = 0.22

⇒ cost of 4% = 4 x 0.22 = 0.88

Or

4% = 4/100 = 0.04

⇒ 4% of 22 = 0.04 x 22 = 0.88

Step-by-step explanation:

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For the function f(x)=5x^3-6, find f^-1
max2010maxim [7]

Answer:

f^{-1} means the inverse function

f^{-1} = \sqrt[3]{(x + 6)/5}

Step-by-step explanation:

f^{-1} means the inverse function

to find an inverse function, flip the x and y variables and solve for y

f(x) = 5x^3 - 6

y = 5x^3 - 6

x = 5y^3 - 6

x + 6 = 5y^3

(x + 6)/5 = y^3

\sqrt[3]{(x + 6)/5} = y

5 0
3 years ago
I need help with 6,7,8,9
algol [13]
Hi there!


6. x² + 6x = 27
subtract 27 on both sides to make the equation equal to 0.
x² + 6x - 27 = 0
(x - 3)(x + 9) = 0
x - 3 = 0                    x + 9 = 0
     x = 3                           x = -9

7. k² - 13k + 36 = 0
(k - 9)(k - 4) = 0
k - 9 = 0               k - 4 = 0
     k = 9                     k = 4


8. g(x) is translated up 5 from f(x).

9. g(x) is reflected by x-axis, then translated 3 down from f(x).



Hope this helped! :)
7 0
3 years ago
This graph represents a proportional relationship between the number of months, x, data is used on a cell phone and the total co
Julli [10]

Answer:

It would be y = 40x

The new equation is y = 45x

Step-by-step explanation:

I did the other question you put ;)

5 0
3 years ago
Read 2 more answers
Help please anyone I really need it.
alekssr [168]

Answer:

[See Below]

Step-by-step explanation:

Hey~There!

______________________

➜ To solve this, we have to subtract:

  • 100-13=87

➜ To make sure we are correct, we add:

  • 87+13=100

______________________

So your answer would be \bold~x=87.

______________________

Hope~this~helps~Mate!\\-Your~Friendly~Answerer,~Shane ヅ

6 0
4 years ago
A function is created to represent the amount of texts sent each month. What restrictions would be made to the range?. The range
forsale [732]
A range is the amount of time from a start of the action up to the end of the action so in your question where a function is created to present the amount of text sent each month. So the best possible restriction of the range is "The range would only include positive integers"
6 0
4 years ago
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