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dimulka [17.4K]
2 years ago
14

at the start of 2014 mikes car was worth 12000 thee value of the car decreased by 30% every year work out the value of his car a

t the start of 2017
Mathematics
1 answer:
Bas_tet [7]2 years ago
7 0

Answer:

4116

Step-by-step explanation:

2014

12000÷10=1200 (10%)

1200x3=3600

12000-3600=8400

2015

8400÷10=840

840x3=2520

8400-2520=5880

2016

5880÷10=588

588x3=1764

5880-1764=4116

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8 0
3 years ago
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How many grams of NH3 are required to produce 4.65 g of HF
nignag [31]

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Step-by-step explanation:

Balanced chemical reaction is written first to know the number of moles taking part in original reaction.

NH3 +3 F2 ⇒3 HF  +  NF3

Given:

mass of HF = 4.65

First the number of moles of HF in 4.65 grams is calculated by using the formula:

number of moles (n) = \frac{mass}{atomic mass of 1 mole}

atomic mass of HF = 20 grams/mole

putting the values in the above equation number of moles can be found.

n = \frac{4.65}{20}

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From the equation it can be said that:

1 mole of NH3 reacts to form 3 moles of HF

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8 0
2 years ago
3+2⋅[(2+1)⋅5+8] need the answer please
s2008m [1.1K]

Hey!

----------------------------------------------

Solution:

Remember to follow PEMDAS!

= 3 + 2 ⋅ [(2 + 1) ⋅ 5 + 8]

= 3 + 2 ⋅ [(3) ⋅ 5 + 8]

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= 3 + 2 ⋅ [23]

= 3 + 46

= 49

----------------------------------------------

Answer:

49

----------------------------------------------

Hope This Helped! Good Luck!

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I just searched it online it that's all

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