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3 years ago

I will give crown if answered right i just need to check my work

Mathematics

2 answers:

frutty [35]3 years ago

6 0

Answer:

9x(3x-2) (3x+2)

Step-by-step explanation:

$81x^{3}-36x$

9(9x³ - 4x)

9x(9x² - 4)

Since both terms are perfect squares factor using the difference of squares formula, a² - b² = (a + b) (a - b)

Therefore, 9x(3x-2) (3x+2)

puteri [66]3 years ago

5 0

Answer:

81z^3-36z = 9z(3z-2)(3z+2)

Step-by-step explanation:

(81z^3-36z)=9z(9z^2-4)

9z(9z^2-4)=9z(3z-2)(3z+2)

81z^3-36z=9z(3z-2)(3z+2)

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PLEASEEEE HELPPP!!

viktelen [127]

Answer:distributive

Step-by-step explanation:

5 0

3 years ago

Factor completely n^4 +8n^2 + 15 =

nata0808 [166]

Answer:

The factor form is $n^4+8n^2+15 = \quad \left(n^2+3\right)\left(n^2+5\right)$

Step-by-step explanation:

When it is required to factor the expression given in the problem, we have to first find a common term or terms, which will be found by either grouping the like terms or the splitting of the terms.

Now the expression that is given here is:

$n^4 +8n^2 + 15$

Now, here we will take:

$u=n^2$

Thus we will get:

$n^4 +8n^2 + 15\\=u^2+8u+15$

Now we will do the middle term split as follows:

$u^2+8u+15\\=\left(u^2+3u\right)+\left(5u+15\right)\\=u\left(u+3\right)+5\left(u+3\right)\\=\left(u+3\right)\left(u+5\right)$

Substituting back $u=n^2$ , we will have:

$\left(u+3\right)\left(u+5\right)\\=\left(n^2+3\right)\left(n^2+5\right)$

Hence, the required factor form of the given expression will be:

$n^4+8n^2+15 = \quad \left(n^2+3\right)\left(n^2+5\right)$

3 0

3 years ago

Is a || b? Explain using angle measurements. Your response should contain at least 3 full sentences describing how you determine

aliya0001 [1]

9514 1404 393

Answer:

Step-by-step explanation:

Angles 6 and 9 are alternate interior angles where transversal 'a' crosses parallel lines p and q. As such, they are congruent. This means the measure of angle 6 is the same as that of angle 9, 110°.

Angles 6 and 8 are corresponding angles. If lines 'a' and 'b' were parallel, those angles would be congruent. We know angle 6 has a measure of 110° and angle 8 has a measure of 70°, so the angles are not congruent. Hence, lines 'a' and 'b' are not parallel.

Alternate solutions

Since you are not allowed to plagiarize my answer, you may be interested in other ways to show the same thing. The basic idea is to use angle relationships where transversals cross parallel lines. Ones that can be useful here are ...

corresponding angles are congruent
vertical angles are congruent*
alternate interior (or exterior) angles are congruent
sequential interior (or exterior) angles are supplementary.
angles of a linear pair are supplementary*

The relations marked with an asterisk (*) apply where any lines cross, and have no specific relationship to parallel lines. The remaining relationships only occur if the lines are parallel. Showing one of those is not true will show that the lines are not parallel.

8 0

3 years ago

V=u+ 2at

ExtremeBDS [4]

Answer:

the answer is A 579m/s

Step-by-step explanation:

Given,

v=? u=3m/s a=4m/s^2 and t=72

Now,

v=u+2at

=3+2{4(72)}

= 3+2(288)

=3+576

=579m/s

4 0

3 years ago

Read 2 more answers

Show all work to multiply (3+ Square root of -16)(6- square root of -64)

KIM [24]

Answer:

1042-96i

Step-by-step explanation:

(3 + 16i)(6 - 64i)

6(3 + 16i)(3 - 32i)

(6) 9 - 96i + 48i +1024

5 0

3 years ago