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2 years ago

Help with this please?????

Mathematics

1 answer:

yanalaym [24]2 years ago

4 0

The answer is 110 degrees

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PLEASE HELP! THIS IS FOR A UNIT!

AlexFokin [52]

Answer:

$n_{1} =-3+2i\\\\n_{2} =-3-2i$

Step-by-step explanation:

You can see the attached picture

7 0

3 years ago

(b) A basketball player made 2 out of 4 free throws she attempted which is 50%. She wants to know how many consecutive free thro

Dvinal [7]

Answer:

B 75%

Step-by-step explanation:

6 0

2 years ago

18. What is the least common denominator of the following<br> fractions? 3/10 and 1/4

Len [333]

Answer:

The denominators of 3 /10 and 1 /4 are 10 and 4.

The factors of 10 are 2 × 5 and 2 × 2

Therfore the LCD should have two 2's and one 5.

This means the answer is:

2 × 2 × 5 = <u>20</u>

I hope this helps :)

7 0

2 years ago

What is the domain and derivative of f(x)=ln(2xsqrt(2+x))?

harkovskaia [24]

Domain is the numbers yo can use
we has a sqrt and a ln
we cant have any neagtive ln's or sqrts
x cannot be negative
it cannot be 0 either
domain is all numbers bigger than 0

deritivive
apply chain rule
dy/dx(f(g(x))=f'(g(x))g'(x)
and also
dy/dx (lnx)=1/x
and
dy/dx(f(x)g(x))=f'(x)g(x)+g'(x)f(x)
and from experience
dy/dx(sqrtx)=1/(2√x)

so

dy/dx(ln(2xsqrt(2+x)))=
(1/(2xsqrt(2+x))(2)(sqrt(2+x)+(x/(2sqrt(2+x))=
(3x+4)/(2x(x+2))

domain is all real numbers greater than 0
derivitive is $\frac{3x+4}{2x(x+2)}$

7 0

2 years ago

MARKIN BRAINIEST!!! GIVIN 30PTS!!!

Sedbober [7]

Answer:

(-16x² +10x -3) +(4x² -29x -2)
(2x² -11x -9) -(14x² +8x -4)
2(x -1) -3(4x² +7x +1)

Step-by-step explanation:

I find it takes less work if I can eliminate obviously wrong answers. Toward that end, we can consider the constant terms only:

-3 +(-2) = -5 . . . . possible equivalent
-10 -5 = -15 . . . . NOT equivalent
3(-5) -2(5) = -25 . . . . NOT equivalent
-9 -(-4) = -5 . . . . possible equivalent
-7 -(-5) = -2 . . . . NOT equivalent
2(-1) -3(1) = -5 . . possible equivalent

Now, we can go back and check the other terms in the candidate expressions we have identified.

1. (-16x² +10x -3) +(4x² -29x -2) = (-16+4)x² +(10-29)x -5 = -12x² -19x -5 . . . OK

4. (2x² -11x -9) -(14x² +8x -4) = (2-14)x² +(-11-8)x -5 = -12x² -19x -5 . . . OK

6. 2(x -1) -3(4x² +7x +1) = -12x² +(2 -3·7)x -5 = -12x² -19x -5 . . . OK

All three of the "possible equivalent" expressions we identified on the first pass are fully equivalent to the target expression. These are your answer choices.

7 0

3 years ago

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