A chemistry set costing 38.50 marked up 32% in cost

Mathematics

2 answers:

shtirl [24]3 years ago

5 0

38.50 + 32% = 50.82 (selling price)
50.82-38.50= 12.32 (marked up price)

Elden [556K]3 years ago

3 0

Revenue- 36.30 profit-8.80

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<img src="https://tex.z-dn.net/?f=5x-4%2B2%28x-4%29%3D16" id="TexFormula1" title="5x-4+2(x-4)=16" alt="5x-4+2(x-4)=16" align="ab

mariarad [96]

Answer:

$\boxed{x = 4}$

Step-by-step explanation:

=> 5x-4+2(x-4) = 16

Expanding the brackets

=> 5x-4+2x-8 = 16

Combining like terms

=> 5x+2x-4-8 = 16

=> 7x - 12 = 16

Adding 12 to both sides

=> 7x = 16+12

=> 7x = 28

Dividing both sides by 7

=> x = 4

3 0

3 years ago

Read 2 more answers

Solve the following equation for x. 7x^2-112=0

xxMikexx [17]

Answer:

x = 4 or x = -4

Step-by-step explanation:

3 0

4 years ago

Is -0.625 a rational number, why

Brut [27]

Yes because it is a terminating decimal and could be converted as a fraction (:

3 0

4 years ago

The accompanying table shows the number of bacteria present in a certain culture over a 4 hour period, where x is the time, in h

Vlad [161]

Answer:

Step-by-step explanation:

I really hope you know how to use your calculator to find regression equations, because in this forum it is impossible to teach you how to do that. I ran the data through my calculator and got the exponential equation as

$y=1963.56(1.14)^x$ which means at 4 hours, we started with 1963 bacteria and it is growing at a rate of 114% each hour. Since we started out with an x value of 0, and that value represents the number of bacteria after 4 hours, then time 0 is 4 hours, which means that time 12 is 16 hours. We replace the x in the equation with a 12 and do the math: