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PIT_PIT [208]
3 years ago
12

Solve for z:2^3z+9=8^2z+1

Mathematics
2 answers:
Anika [276]3 years ago
4 0

Answer:

Hope this helps

Step-by-step explanation:

Sholpan [36]3 years ago
3 0

Answer:

z = 0.143

Step-by-step explanation:

2³z+9 = 8²z+1

1. Subtract 1 from both sides

2³z+8 = 8²z

2. Solve exponents

8z+8 = 64z

3. Subtract 8z from 64z

8 = 64z-8z

8 = 56z

4. Divide 8 by 56 in order to isolate z

8/56 = z

0.143 ≈ z

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Kabul’s bookshop marks up all books by 40 percent of their cost. The overhead rate is 16 percent of the selling price. What is t
morpeh [17]

Answer:

The net profit rate on the book is 5.41

Step-by-step explanation:

Given as :

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The overhead rate is 16% of selling price

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Let The profit = $p

Let The selling price = s.p

<u>Now, According to question</u>

mark up percentage = \dfrac{s.p - c.p}{c.p}

I.e 40% =  \dfrac{s.p - 18.10}{18.10}

Or, \dfrac{40}{100} + 1 = \dfrac{s.p}{18.10}

Or, \dfrac{140}{100} =  \dfrac{s.p}{18.10}

Or, s. p = \dfrac{140\times 18.10}{100}

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So, selling price of book = s.p = $25.34

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Or, estimated cost = 16% × 25.34

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Hence, The net profit rate on the book is 5.41  Answer

4 0
3 years ago
Use linear regression to find a
Inessa [10]

A function that fits the following points (0,5), (2,-13) is y = 9x + 5

<h3>Equation of a line</h3>

The equation of a line in slope-intercept form is expressed as;

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m is the slope

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Learn more on linear regression here; brainly.com/question/25987747

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2 years ago
Bob and Caitlyn are playing a trading-card game. Between them, they have 81 cards. Bob has 7 fewer cards than Caitlyn.
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40 - 7 = cards Bob has 

= 33 cards bob has 


</span>
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3 years ago
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