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Vadim26 [7]
3 years ago
6

Solve the following system of equations using the substitution method

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
4 0

Answer:

the answer is x5.5

Step-by-step explanation:

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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
What are two or more geometric figures that are identical in shape although not necessarily the same size?
Andrei [34K]

Unless I am misreading, the question, or don't know all of it, there can be an infinite number of similar shapes. Three are give to you at the bottom of this answer, but there are many more possibilities.

3 0
3 years ago
How many solutions does an equation of the form x^2- k^2= 0 have?
N76 [4]
1. Use Difference of squares: a^2-b^2=(a+b)(a-b)
(x+k)(x-k)=0

2. Solve for x and k
x=+-k
k=+-x
8 0
3 years ago
What is 4 multiplied by pi multiplied by 4.6 to the power of 3
kow [346]

Answer:

193,153.72460551

Step-by-step explanation:

Multiply 4 times pi or 3.14 if you are rounding. Then multiply that number by 4.6

Lastly once you done all of put it to the po wer of 3

4 0
1 year ago
Read 2 more answers
I need your help please​
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see the steps from the pic

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