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3 years ago

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9

Mathematics

1 answer:

navik [9.2K]3 years ago

7 0

2n-9 Bc math yep
Huhhhhhh

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use the pythagorean theorem to find the missing side length. 2 write sin, cosine, tangent of each angel.

Harlamova29_29 [7]

Answer:

1) $x=5\sqrt{3}$

2) $sin(a)=5\sqrt{3}/14$

$sin(b)=11/14$

$cos(a)=11/14$

$cos(b)=5\sqrt{3}/14$

$tan(a)=5\sqrt{3}/11$

$tan(b)=11/5\sqrt{3}$

Step-by-step explanation:

The Pythagorean Theorem is:

$a^{2}=b^{2}+c^{2}$

Where a is the hypotenuse and b and c are the legs.

The missing side lenght is one of the legs, then you must solve for one of them. Therefore, this is:

$x=\sqrt{(14yd)^{2}-(11yd)^{2}}=5\sqrt{3}yd$

MEASURE OF ANGLE:

Keep the identities on mind:

$sin\alpha=opposite/hypotenuse$

$cos\alpha=adjacent/hypotenuse$

$tan\alpha=opposite/adjacent$

Susbstitute values, then:

$sin(a)=5\sqrt{3}/14$

$sin(b)=11/14$

$cos(a)=11/14$

$cos(b)=5\sqrt{3}/14$

$tan(a)=5\sqrt{3}/11$

$tan(b)=11/5\sqrt{3}$

4 0

4 years ago

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Please answer!!!!!!!!!

Inessa05 [86]

Answer:

Step-by-step explanation:

Got it right on the quiz.

3 0

3 years ago

We want to find the zeros of this polynomial:

fredd [130]

Answer:

x = -3 and x = -3/2

Step-by-step explanation:

After writing down the polynomial, split it; put a line between 3x^2 and -18x. Look and 2x^3 + 3x^2 and -18x - 27 separately and factor them both:

p(x) = 2x^3 + 3x^2 - 18x -27

p(x) = x^2(2x+3) -9(2x+3)

Now notice how x^2 and -9 have the same factor (2x+3). That means x^2 and -9 can go together:

p(x) = (x^2 - 9)(2x+3)

Factor it once more because there's a difference of squares:

p(x) = (x+3)(x-3)(2x+3)

Now just plug in whatever makes the each bracket equal 0:

x = -3, x = 3, and x = -3/2

Those are your zeros.

8 0

3 years ago

How many times larger is 4 x 10 ^16 than 4 x 10^6?

elena-14-01-66 [18.8K]

Answer:

10^10 times

Step-by-step explanation:

To find it we will divide:

4 x 10^16 / 4 x 10^6 =
4/4 x 10^(16 - 6) =
1*10^10=
10^10 times

The first number is 10^10 times larger

8 0

3 years ago

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Is x^2-3x-23 polynomial

umka2103 [35]

Answer:

Yes

Step-by-step explanation:

6 0

3 years ago

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9​

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9