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attashe74 [19]
3 years ago
15

Circle the number that correctly completes the statement. A pair of shoes is on sale for 45% off the original price. The origina

l price is $38. The sale price is $
Mathematics
1 answer:
Genrish500 [490]3 years ago
7 0

Answer: $20.9

Step-by-step explanation:

Original price= $38

Discount= 45% of 38

=45/100 × 38

= $17.1

Sales price= Original price - discount= 38-17.1 =$20.9

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How much heat in kJ is released when nitrogen and hydrogen react as below to form 100.g ammonia heat equals-92.2kj
tresset_1 [31]

100g of ammonia releases 271.18 kJ of heat.

<u>Explanation:</u>

Given:

N₂ reacts with H₂

The reaction is:

2N₂ + 3H₂ → 2NH₃ + 92.2 kJ

According to the balanced reaction:

2 X 17g of ammonia releases 92.2 kJ of heat

34g of ammonia releases 92.2 kJ of heat

100g of ammonia will release = \frac{92.2}{34} X 100 kJ of heat

                                                 = 271.18 kJ

Therefore, 100g of ammonia releases 271.18 kJ of heat.

8 0
2 years ago
In 10 years, a bank account with a 5.25% annual interest rate earned $18,375 as simple interest. What was the principal amount?
sdas [7]

Answer:

The principal amont was $35,000

Step-by-step explanation:

This is a simple interest problem.

The simple interest formula is given by:

E = P*I*t

In which E are the earnings, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

In this problem, we have that:

E = 18375, t = 10, I = 0.0525

We want to find P. So

E = P*I*t

18375 = P*0.0525*10

0.525P = 18375

P = \frac{18375}{0.525}

P = 35000

The principal amont was $35,000

5 0
2 years ago
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mylen [45]
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3 years ago
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Whitepunk [10]

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animania-1.12.2-1.6.2.jar

4 0
2 years ago
The distance of AB = [?]<br> Round to the nearest tenth.<br> No links and actual help plz!
FrozenT [24]

AB = 5.6
hope this is helpful!
8 0
2 years ago
Read 2 more answers
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