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Anna007 [38]
3 years ago
6

A store bought a bike for $145. They marked up the cost by 150%. What is the new selling price?

Mathematics
1 answer:
makvit [3.9K]3 years ago
5 0

150% = 1.50

145 x 1.50 = 217.50

 the selling price is $217.50

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24 is 20% of what number
jekas [21]
24 is 20% of 120 

Convert your percentage into a decimal:
\frac{20}{100} = 0.2

Divide 24 by your decimal:
\frac{24}{0.2} = 120

6 0
3 years ago
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Pls help no links pls
Leviafan [203]

Answer:

the answer is A

Step-by-step explanation:

x + 10 = 2x - 4 \\ 10 + 4 = 2x - x \\ x = 10 + 4 \\ x = 14

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3 years ago
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The population of a city of 826,000 people decreases 3% per year.
Lubov Fominskaja [6]

Answer:

588200

Step-by-step explanation:

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5 0
3 years ago
A person invests $2,740 in an account that earns 4.3% annual interest. Find when the value of the investment reaches $7,000. If
Juli2301 [7.4K]

So, to set up your equation is the hardest part. If you remember the basic format, you're set.

I(t) = P * (1+r%)^t

t= time and this will be our variable

Initial amount P = $2740

Rate = 4.3% which converts numerically into .043

I(t) = 7000

Before we get to find out how to find how many years it takes to get to $7000, set up the basic equation by plugging in what we know.


I(t) = $2740(1+4.3%)^t

I(t)=2740(1.043)^t

Now plug in for $7000 for I(t)

7000=2740(1.043)^t                 Divide both sides by 2740

7000/2740 = 2740/2740(1.043)^t

2.55474453=(1.043)^t

Now you can solve for t in two ways. You can either use the natural log or graph it on your graphing calculate and see when the two equations meet.

In your calculator you can set up:

ln(2.55474453)/ln(1.043) = t                 which is the method I prefer since it's much simpler

t=22.278528

but you can also graph it in your ti-84

with

y1=2.55474453

y2=(1.043)^x

and find where they intersect on the graph.

either way it'll be the same answer

3 0
3 years ago
Log3 a/3 = ??????????????????????????
Naddik [55]
We have that
<span>Log3 a/3
</span>Rewrite log3(a/3) using the change of base <span>formula

we know that
</span>The change of base rule can be used if a and b are greater than 0 and not equal to 1, and x is greater than 0<span>.
</span>so
loga(x)=<span>logb(x)/<span>logb<span>(a)
</span></span></span>Substitute in values for the variables in the change of base <span>formula
</span>
in this problem
b=10
a=3
x=a/3

log3(a/3)=[log (a/3)]/[log (3)]

the answer is
[log (a/3)]/[log (3)]

8 0
3 years ago
Read 2 more answers
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