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ZanzabumX [31]
3 years ago
5

Nick has a box of ornaments that he uses to

Mathematics
1 answer:
Lelu [443]3 years ago
7 0

Answer:

18

Step-by-step explanation:

6 + 6 + 6 = 18

If this helps, please give me branliest! I need it.

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PLEASE PLEASE HELP!!!!!
kodGreya [7K]
We need 6.5% to a decimal so..
6.5% /100 = 0.065

$21.30 X 0.065 = 1.3845 tax on the shirt
 
So.. we add the price of the shirt, and the amount of tax on the shirt
$21.30 + 1.3845 = $22.6845

Answer = $22.68
3 0
3 years ago
You invest $2,000.00 at a rate of 4% APR for a 3 months. How much interest did you earn?
Naya [18.7K]
<span>1) If you invest $2,000.00 at a rate of 4% APR for 3 months and the interest is compounded monthly then in 3 months.It will be worth $2,020.07.
So subtracting $2,000 from $ 2,020.07
we get.
<span>$20.07

2) </span></span><span>I = Prt </span>
<span>I = 4,000 * 0.05 </span>
<span>I = $200 

</span><span>200 / 10 = 20 hours of work</span>
4 0
3 years ago
Read 2 more answers
Please help me with this
dexar [7]

Answer:0.28divide by7

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Use the exponential decay​ model, Upper A equals Upper A 0 e Superscript kt​, to solve the following. The​ half-life of a certai
Akimi4 [234]

Answer:

It will take 7 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

A=A_0 e^{kt}

Where,

A_0 = Initial amount of the substance,

If the half life of the substance is 19 years,

Then if t = 19, amount of the substance = \frac{A_0}{2},

i.e.

\frac{A_0}{2}=A_0 e^{19k}

\frac{1}{2} = e^{19k}

0.5 = e^{19k}

Taking ln both sides,

\ln(0.5) = \ln(e^{19k})

\ln(0.5) = 19k

\implies k = \frac{\ln(0.5)}{19}\approx -0.03648

Now, if the substance to decay to 78​% of its original​ amount,

Then A=78\% \text{ of }A_0 =\frac{78A_0}{100}=0.78 A_0

0.78 A_0=A_0 e^{-0.03648t}

0.78 = e^{-0.03648t}

Again taking ln both sides,

\ln(0.78) = -0.03648t

-0.24846=-0.03648t

\implies t = \frac{0.24846}{0.03648}=6.81085\approx 7

Hence, approximately the substance would be 78% of its initial value after 7 years.

5 0
3 years ago
3) Your piggy bank has only nickels and dimes. There 21 coins totaling
zysi [14]
There are 14 nickels and 7 dimes.
(You can check by multiplying 14 by 5 for nickels and 7 times 10 for dimes. This would add up to 1.35)

5 0
2 years ago
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