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Salsk061 [2.6K]
3 years ago
15

A calculator was purchased for $29. The wholesale cost was $20. What was the percent markup?

Mathematics
1 answer:
Oxana [17]3 years ago
5 0
If you would like to find the percent markup, you can calculate this using the following steps:

x% of $20 is $29
x% * 20 = 29
x/100 * 20 = 29
x = 29 * 100 / 20
x = 145%

145% - 100% = 45%

The correct result would be 45%.
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The temperature was -14°F at 8 a.m.

At noon is was 10 degrees warmer - the temperature increase was 10°F
-14°F + 10°F = -4°F

The tempertaure increase between noon and 4 p.m. was twice the previous increase in temperature, which was 10°F.
10°F x 2 = 20°F

We want to know the temperature at 4 p.m. so we just add it up to the previous result.
-4°F + 20°F = 16°F

16°F is the correct answer
4 0
3 years ago
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How many terms are in the expression? 9a + 6b + 3c + 1 A) 1 B) 2 C) 3 D) 4
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Answer:

D.) there is 9a and 6b ,3c and 1 thats four different terms

Step-by-step explanation:

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7 0
2 years ago
12) The school that Danielle goes to is selling tickets to a choral performance. On the first day of
kicyunya [14]

Answer:

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Step-by-step explanation:

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5a + 9b = 144

14a + 6b = 192

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6 0
3 years ago
The population of a county is growing at a rate of 9% per year, compounded continuously. How many years will it take for the pop
torisob [31]

Answer:

t=15.4\ years

Step-by-step explanation:

The  exponential growth function compounded continuously is equal to

A=P(e)^{rt}  

where  

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r is the rate of growth in decimal  

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e is the mathematical constant number

we have  

A=4x\\P=x\\ r=9\%=9/100=0.09  

substitute in the function above

4x=x(e)^{0.09t}    

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Take natural log of both sides

ln(4)=ln[(e)^{0.09t}]

ln(4)=0.09t(ln(e))

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t=ln(4)/0.09

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8 0
4 years ago
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Answer:

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Step-by-step explanation:

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6 0
3 years ago
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