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3 years ago

Is the number 15 prime or composite?

Mathematics

1 answer:

kramer3 years ago

6 0

It is composite because it can be factored out as 5x3 or 15x1

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Find the solutions to x2 = 28.

mr Goodwill [35]

Answer: $x = \pm2\sqrt{7}\\\\$

Work Shown:

$x^2 = 28\\\\x = \pm\sqrt{28}\\\\x = \pm\sqrt{4*7}\\\\x = \pm\sqrt{4}*\sqrt{7}\\\\x = \pm2\sqrt{7}\\\\$

This can be rewritten into $x = 2\sqrt{7} \ \text{ or } \ x = -2\sqrt{7}$

7 0

3 years ago

Which statement about the dilation of these triangles is true?

Arisa [49]

The scale factor is 7

7 0

3 years ago

Write an equation for the n th term of the arithmetic seqeuence. Then find a{10}. 100,110,120,130

lord [1]

Answer:

100+10n

Step-by-step explanation: a(10)

100+10(10)

100+100 = 200

7 0

3 years ago

Explain why 30 divided by x is the same as 30 -x-x-x-x-x-x equal 0

sattari [20]

The value would be zero (0) bcuz if all ends up being 0 no matter how many zeros then yes it would be 0 as the value

7 0

3 years ago

How to evaluate polynomial function

Katen [24]

Answer:

"Evaluation" mostly means "simplifying an expression down to a single numerical value". Sometimes you will be given a numerical expression, where all you have to do is simplify; that is more of an order-of-operations kind of question

example: So let we are given a polynomial function as:

$f(x)=x^4+3x^3-x^2+6$ and we are aksed to evaluate this polynomial at $x=-3$

Then the value of the polynomial will be:

$f(-3)=(-3)^4+3\times (-3)^3-(-3)^2+6\\\\f(-3)=81+3\times (-27)-9+6\\\\f(-3)=81-81-9+6\\\\f(-3)=-3$

Hence on evaluating the polynomial function f(x) at $x=-3$ we get the value of the polynomial function as $-3$ .

7 0

4 years ago