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3 years ago

12

What is the Analysis of Cramer’s rule?

1 answer:

kkurt [141]3 years ago

7 0

Ans: Cramer's rule uses determinants instead of the inverse to solve linear systems of equations. Its major disad- vantage is that you can only solve for one variable at a time - this is why most computer programs do not use this rule to solve systems of equations.

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Find a formula for an arithmetic sequence that begins 80, 83, 86, 89, ...

mel-nik [20]

Answer:

$a_{n}$ = 3n + 77

Step-by-step explanation:

The nth term of an arithmetic sequence is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 80 and d = a₂ - a₁ = 83 - 80 = 3 , then

$a_{n}$ = 80 + 3(n - 1) = 80 + 3n - 3 = 3n + 77

3 0

3 years ago

SOOO I NEED SOME HELP HERE

Afina-wow [57]

Answer:

maybe (2,8) but im not so sure im kinda okay at math

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

which set does square 7 belong to? integers and irrational numbers irrational and real numbers real and rational numbers rationa

IgorC [24]

Answer:

Rational and whole numbers

Step-by-step explanation:

7x7=49 which is a whole number which automatically makes it rational!

3 0

3 years ago

Which expression is equivalent to the following complex fraction? X/x-3/x^2/x^2-9

rewona [7]

Answer:

C) $\frac{x+3}{x}$

Step-by-step explanation:

The given expression is

$\frac{\frac{x}{x-3} }{\frac{x^2}{x^2-9} }$

We rewrite to obtain:

$\frac{x}{x-3} \div \frac{x^2}{x^2-9}$

Multiply the first fraction by the reciprocal of the second to get;

$\frac{x}{x-3} \times \frac{x^2-9}{x^2}$

Factor the numerator using difference two squares;

$\frac{x}{x-3} \times \frac{x^2-3^2}{x^2}$

$\frac{x}{x-3} \times \frac{(x-3)(x+3)}{x^2}$

Cancel out the common factors to get;

$\frac{1}{1} \times \frac{(1)(x+3)}{x}$

This simplifies to;

$\frac{x+3}{x}$

3 0

3 years ago

Read 2 more answers

The function f(x)=x^2 is stretched vertically by a factor of 3, translated 2 units to the right, and translated 3 units down. Wr

podryga [215]

Answer:

f(x)=(3x^2-2)-3

Step-by-step explanation:

Multiply the x^2 by three for the vertical stretch.

Then subtract the two for the right translation.

Then outside the parenthesis subtract the three to shift it down three units.

4 0

3 years ago