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mylen [45]
3 years ago
13

A. Is the statement​ "Every elementary row operation is​ reversible" true or​ false? Explain.

Mathematics
1 answer:
Tatiana [17]3 years ago
3 0

Answer:

This statement is "TRUE".

Step-by-step explanation:

Every elementary row operation is reversible. You can get the reverse answer  by multiplying by a constant or by multiplying by its inverse. You can  add one row to another row and subtract row 1 from row 2 to get it back.

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(8,9,2 )(3,5,7)(1,3,3)(5,3,2) which does not make up a triangle
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Most likely you are expected to recognize that side lengths 2, 3, 5 will result in a "triangle" of zero area (looks like a line segment).

The appropriate choice is 
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Some authors write the triangle inequality as a + b ≥ c for any assignment of a, b, c to side lengths. The "or equal to ..." allows the triangle to have zero area (looks like a line segment). Other authors insist the inequality not include the "or equal to" case. It looks like your text's author is in the latter camp.
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Eileen collected 98 empty cans to recycle and Carl collected 82 cans they packed and equal number of canes into each of three bo
marta [7]
To solve this you have to add 98 and 82 together then divide by three so the answer would be 60
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3 years ago
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Find the 63rd term of the arithmetic sequence -1, 5, 11, ...−1,5,11,...
Ugo [173]

Answer:

a_6_3=371

Step-by-step explanation:

we know that

In an <u><em>Arithmetic Sequence</em></u> the difference between one term and the next is a constant and this constant is called the common difference

we have

-1,5,11,...

Let

a_1=-1\\a_2=5\\a_3=11

a_2-a_1=5-(-1)=5+1=6

a_3-a_2=11-5=6

The common difference is d=6

We can write an Arithmetic Sequence as a rule

a_n=a_1+d(n-1)

where

a_n is the nth term                

d is the common difference

a_1 is the first term

n is the number of terms

Find the 63rd term of the arithmetic sequence

we have

n=63\\d=6\\a_1=-1

substitute

a_6_3=-1+6(63-1)

a_6_3=-1+6(62)

a_6_3=-1+372

a_6_3=371

6 0
4 years ago
2/7 into percents ??
mafiozo [28]

Answer:

28.57142857 %

Step-by-step explanation:

Convert the fraction to a decimal, then multiply by  100 .

28.57142857 %

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3 years ago
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Find equation of the line passing through the given point in parallel to given equation. write your answer in slope intercept fo
denpristay [2]

Answer:

  • 3) y = (7/2)x -12
  • 4) y = 3x -5
  • 7) y = (1/3)x +4/3
  • 8) y = (-4/3)x +8/3

Step-by-step explanation:

In every case, you can ...

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  • for point (h, k), replace x with (x-h) and y with (y-k), then simplify
  • solve for y (add the opposite of the y-term; divide by the y-coefficient)

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... y = (7/2)x -12

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... y = 3x -5

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... y = (1/3)x +4/3

8) 4(x-2) +3(y -0) = 0 ⇒ 4x +3y -8 = 0

... y = (-4/3)x +8/3

7 0
3 years ago
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