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Lera25 [3.4K]
3 years ago
8

Can someone help please I’m having trouble with this and I have a test

Mathematics
1 answer:
BigorU [14]3 years ago
8 0

Answer:

x ≈ 36 feet

Step-by-step explanation:

we can use cosine (adjacent side / hypotenuse)to solve this question:

cos 77° = 8 / x

x = 8 / cos 77°

x = 35.5632...

x ≈ 36 feet

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what is the polynomial function of lowest degree with leading coefficient of 1 and roots 2 and 1 + square root2
Marta_Voda [28]
If the roots to such a polynomial are 2 and 1+\sqrt2, then we can write it as

(x-2)(x-(1+\sqrt2))

courtesy of the fundamental theorem of algebra. Now expanding yields

(x-2)(x-1-\sqrt2)=x^2-2x-(1+\sqrt2)x+2(1+\sqrt2)=x^2-(3+\sqrt2)x+2+2\sqrt2

which would be the correct answer, but clearly this option is not listed. Which is silly, because none of the offered solutions are *the* polynomial of lowest degree and leading coefficient 1.

So this makes me think you're expected to increase the multiplicity of one of the given roots, or you're expected to pull another root out of thin air. Judging by the choices, I think it's the latter, and that you're somehow supposed to know to use 1-\sqrt2 as a root. In this case, that would make our polynomial

(x-2)(x-(1+\sqrt2))(x-(1-\sqrt2))=x^3-4x^2+3x+2

so that the answer is (probably) the third choice.

Whoever originally wrote this question should reevaluate their word choice...
5 0
3 years ago
Solve an equation x/17= -4
Rainbow [258]

Answer:

-68

Step-by-step explanation:

X/17=-4

X=-68

So the answer is -68

6 0
3 years ago
From a hot air balloon that is between his house and parade, john measures the angle of depression to his house of 35 and to the
igomit [66]

4500 feet

Step-by-step explanation:

We can begin by finding x using the tangent rule;

The tangent of the angle = the length of the opposite side / the length of the adjacent side

Tan 35 = 3500 / x

X = 3500 / tan 35

X  = 3500 / 0.7

X = 5000

Now that we have x we can calculate the value of ? using the same tangent rule;

Tan 42 = ? / 5000

? =  tan42 * 5000

? = 0.9 * 5000

? = 4500

Learn More:

For more on trigonometry check out;

brainly.com/question/12710176

brainly.com/question/11275089

#LearnWithBrainly

4 0
4 years ago
Read 2 more answers
Is there a way to find figure out a function with just the X & Y intercepts. I know there are convertors to find the X &
AlladinOne [14]

Answer:

Step-by-step explanation:

yes, since that are 2 points:

y-int is (0, y)

x-int is (x, 0)

since you need only two points for a function with no restrictions, we can use y and x intercepts as points

3 0
4 years ago
Finding missing angles please help!!! pls
Alex73 [517]

Answer:

x = 15

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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