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2 years ago

Convert 3 over 11 to a decimal by long division

1 answer:

3 0

It doesn't matter HOW you do the division. You can use a calculator,
long division, mental math, short division, a slide rule, a Curta, or an
abacus. Every possible method must deliver the same answer. If it
doesn't, then either you made a mistake using it, or else the method
itself doesn't work.

So I'm not going to tell you what method I'm using.

The decimal equivalent of 3 divided by 11 is

0.2727272727... .

In order to be exactly equal to 3/11, the '27's must keep going forever,
and never end.

If you don't have enough time or space on the paper to write an infinite
string of '27's, then you can write some of them and then stop. The more '27's
you write, the closer your decimal will be to 3/11 , so you can get it as close
as you want. But if you ever stop, then it won't be exactly equal to 3/11 .

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LING'S HALLWAY IS 10 FEET LONG AND 4 FEET WIDE. HE PAID $200 TO TILE HIS HALLWAY FLOOR. HOW MUCH DID LING PAY PER SQUARE FOOT FO

ivanzaharov [21]

Answer:

Step-by-step explanation:

10x4/200=5

5 0

3 years ago

If A and B are 7 x 2 matrices, and C is a 4x7

Nata [24]

Answer:

A, B, D, F

Step-by-step explanation:

Matrix operations require that the matrix dimensions make sense for the operation being performed.

Matrix multiplication forms the dot product of a row in the left matrix and a column in the right matrix. That can only happen if those vectors have the same dimension. That is the number of columns in the left matrix must equal the number of rows in the right matrix.

Matrix addition or subtraction operates on corresponding terms, so the matrices must have the same dimension.

The transpose operation interchanges rows and columns, so reverses the dimension numbers. It is a defined operation for any size matrix.

<h3>Defined operations</h3>

A. CA ⇒ (4×7) × (7×2) . . . . defined

B. B -A ⇒ (7×2) -(7×2) . . . . defined

C. B -C ⇒ (7×2) -(4×7) . . . undefined

D. AB' ⇒ (7×2) × (2×7) . . . . defined

E. AC ⇒ (7×2) × (4×7) . . . undefined

F. C' ⇒ (7×4) . . . . defined

5 0

1 year ago

A is a finite non-empty set. The domain for relation R is the power set of A.(Recall that the power set of A is the set of all s

siniylev [52]

Answer:

The answer is "Choice D"

Step-by-step explanation:

Determining the information:

For " $X \subseteq A$ " and " $Y \subseteq A$ ", $X$ relates to $Y$ when $X$ and $Y$ has the same cardinality. therefore, R does not have reflective:

For every " $X \subseteq A$ ", " $X= X$ " So, X not proper subset of $X$ . So, R does not havereflexive.

R does not have symmetry:

For every " $X \subseteq Y$ " ,then, " $Y \subset X$ " is not true because $X$ not relate to $Y$ . So, R is not symmetric.

R does not have antisymmetric:

When $X$ relates to $Y$ and $Y$ is relate to $X$ , then " $X \subset Y$ " and " $Y \subset X$ " $\to X=Y$

Therefore, R is anti-symmetric.

5 0

2 years ago

The sum of a number and its square is 2. Find the number(s).

Yuliya22 [10]

Let x represent the number.
.. x^2 +x = 2
.. x^2 +x +1/4 = 9/4 . . . . add 1/4 to complete the square
.. x +1/2 = ±3/2 . . . . . . . .square root
.. x = -2, 1

Numbers meeting that requirement are -2 and 1.