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spin [16.1K]
4 years ago
14

First choose which of the following statements are correct. If there is more than one reason why the system is not in echelon fo

rm, type the letters as a comma separated list. If the system is in echelon form, make sure to type D as your answer. A. The system is not in echelon form because a variable is the leading variable of two or more equations. B. The system is not in echelon form because the system is not organized in a descending "stair step" pattern so that the index of the leading variables increases from the top to bottom. C. The system is not in echelon form because not every equation has a leading variable. D. The system is in echelon form.

Mathematics
1 answer:
tensa zangetsu [6.8K]4 years ago
3 0

Answer:

D. The system is in echelon form.

Step-by-step explanation:

Check attachment

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Help me pleaseeeeeee
Yuri [45]

Answer:

See below ~

Step-by-step explanation:

A lies between 665 and 670.

Let's answer the questions asked.

<u>A rounded to the nearest ten</u>

  • As the ones place value of A is clearly greater than 5, it will round up
  • The nearest ten is <u>670</u>

<u></u>

<u>A rounded to the nearest hundred</u>

  • As the tens place value of A is greater than 5, it will round up
  • The nearest hundred is <u>700</u>
3 0
2 years ago
Read 2 more answers
When we first learn arithmetic, we focus on working with whole numbers. Then, we extend our understanding to fractions and negat
vodka [1.7K]

Answer:

I don't think I can remember every skill I was taught through the years but in Kindergarten we used Number Sense so we could understand the meaning of more and less also there's estimation and  PEMDAS. I've also learned how to round up so that the solution is at least around those numbers if the skill is to be applied.

hope that helps

Step-by-step explanation:

3 0
2 years ago
Original price: $32 ;Markup: 12.5% ;what is Retail Price
Trava [24]
12.5% = .125
32 x .125 = 4
32 + 4 = $36
6 0
3 years ago
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The value of a book is $150 and decreases at a rate of 4% per year. Find the value of the book after 12 years
nevsk [136]
If it decreases at 4% every year, then its value becomes:

100% - 4% = 96% = 96/100 = 0.96

At the end of the 1 year its value becomes:  150*(0.96)

At the end of the 2 years its value becomes:  150*(0.96)*(0.96) = 150*(0.96)²

At the end of the 3 years its value becomes:  150*(0.96)*(0.96)*(0.96) = 150(0.96)³

So similarly at the end of 12 years, its value becomes 150*(0.96)¹²

=50*(0.96)¹²    simplify with calculator.

<span>≈ 91.91

Value at the end of 12 years becomes ≈ $</span><span>91.91

I hope this helps.
</span>
8 0
3 years ago
A circle has a diameter of 10 inches. Which expression could be used to find the area of the circle?
Alex777 [14]
The area would be expressed as 2( pie ) ( 5 ) !
8 0
3 years ago
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