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sammy [17]
3 years ago
13

I need to be able to find the value of x

Mathematics
1 answer:
drek231 [11]3 years ago
8 0
If a 4 sided figure has 360°...for each side we add, we add 180°.

you have a 7 sided figure (360° + 3(180°) = 900°)

adding up your angles (781) and subtract it from 900 =

x = 119°
You might be interested in
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
Find d. Write your answer in simplest radical form.
vekshin1

Answer:

d=8km

Step-by-step explanation:

explanation is in the image above

5 0
2 years ago
What is the inequality to x+3>8
olga2289 [7]

Answer:

x>5

Step-by-step explanation:

Subtract 3 from both sides.

7 0
3 years ago
Barry got a samll sandwich for lunch and ate 1/2 of his sandwich. Jonah got a large sandwich and ate 1/2 of his sandwich. Did Jo
xeze [42]
No, they did not eat the same amount. Barry ate less because his sandwich was smaller, so there would be a smaller half. Jonah ate more because his sandwich was bigger, so he would have eaten a bigger half.
8 0
3 years ago
A coat is on sale for 65% of the original price of $58. Calculate the sale price. Explain please
lys-0071 [83]

Answer:

$37.70

Step-by-step explanation:

65 divided by 100 multiplied by $58 is $37.70

5 0
3 years ago
Read 2 more answers
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