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Artemon [7]
3 years ago
12

(please explain how you got your answer, thank you)

Mathematics
1 answer:
Andrej [43]3 years ago
8 0
A, 20%, because 21 divided by 105 times 100 is 20%.
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Joe buys groceries for his grandfather the groceries cost $42 plus 5% tax joe wants to know the total cost of the groceries incl
vekshin1
<h3>Answer: $44.10</h3>

====================================================

Work Shown:

5% = 5/100 = 0.05

5% of 42 = 0.05*42 = 2.10

tax = $2.10

total cost including tax = $42 + $2.10 = $44.10

----------

An alternative is to multiply 42 by 1.05 to get

1.05*42 = 44.10

We get the same answer. The 1.05 refers to 1 + 0.05 where the "1" is 100% and the 0.05 is 5%, so the two combine to 105%, meaning the total cost is 105% of the cost before tax is considered.

7 0
3 years ago
Write the equation for the translation. y=cos x; translated 5 units right.
Rainbow [258]

Answer:

B: y=cos(x-5). I'm sorry I can't really explain.

8 0
3 years ago
Help me with this!! Will mark Brainliest
tatiyna

Answer:

TU = 19 cm

coz both the triangles are same.

6 0
3 years ago
The cost of rubens large storage unit $285.47 per month. If Ruben pays in advance for 2 years of storage,how much will he pay in
Mrrafil [7]
285.47 * 24 = 6851.28

$6851.28 for 2 years 
4 0
3 years ago
Read 2 more answers
Find the inverse of function f<br> f(x)9x+7
kap26 [50]

The inverse of function f(x) = 9x+7 is f-1(x) = x/9 - 7/9

<h3>How to determine the inverse of the function?</h3>

The function is given as:

f(x) = 9x + 7

Express f(x) as y

y = 9x + 7

Swap the positions of x and y in the above equation

x = 9y + 7

Subtract 7 from both sides

9y = x - 7

Divide through by 9

y = x/9 - 7/9

Express as an inverse function

f-1(x) = x/9 - 7/9

Hence, the inverse of function f(x) = 9x+7 is f-1(x) = x/9 - 7/9

Read more about inverse functions at:

brainly.com/question/14391067

#SPJ1

5 0
2 years ago
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