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strojnjashka [21]
3 years ago
14

Which is the best estimate of -14 1/9 (-2 9/10)?-42-282842​

Mathematics
1 answer:
Leona [35]3 years ago
5 0
The answer would be 20
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What is the value of k ?
seropon [69]
K=10
Here is the equation

180-115=65

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3 years ago
Solve each equation for the given variable a-2b=-10 for b
Ymorist [56]
A-2b=-10
add 2b on both sides
a=2b-10
add 10 to both sides
a+10=2b
divide both sides by 2
a/2+10/2=a/2+5=b
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Alex purchased a new car for $28,000. The car's value depreciates 7.25% each year. What will be the value of the car 5 years aft
Anestetic [448]
A = 28000(0.9275)^5

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Hoped this helped 
8 0
3 years ago
Solve the system of equations -2x+y=5 x-3y=-30
EastWind [94]
-2x+y=5
x-3y=-30 so you can multiply the bottom equation by 2 you'll get 2x-6y=-60

-2x+y=5
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5 0
3 years ago
Element X decays radioactively with a half life of 9 minutes. If there are 890 grams of Element X, how long, to the nearest tent
elena-s [515]

Answer:

13.18651685

13.9

Explain:

890-238=652
652/890=0.7325842697 (Find out the percentage)

We know that 1 gram of Element X will be fully decayed in 18 minutes and half of it in 9 minutes.

0.7325842697x18=13.18651685

As you see 18/13.18651685 will equal to 18 (not exactly since it is rounded)

And of course we need to round it to nearest tenth. So the answer would be 13.9!

3 0
2 years ago
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