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3 years ago

O is the center of the circle. Assume that lines that appear to be tangent are tangent. What is the value of x?

Mathematics

1 answer:

Anna [14]3 years ago

4 0

Answer:

Step-by-step explanation:

We know that radius of a circle is perpendicular to the tangent of the circle at the point of contact.

$\therefore x\degree +90\degree +90\degree+124\degree =360\degree\\\therefore x\degree +304\degree =360\degree\\\therefore x\degree =360\degree-304\degree\\\huge\purple{\boxed{\therefore x\degree =56\degree}}$

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Expand $\left(x^2 \frac{1}{x}\right)^3$. (Write the terms with higher degree first, so for example an $x^2$ term would come befo

Ilya [14]

Answer:

$x^6+3x^3+3+\dfrac{1}{x^3}$

Step-by-step explanation:

We can use the pascal triangle to find the coefficients of the expasion of the cube. It holds that

$(x^2 + \dfrac{1}{x})^3=(x^2)^3+3(x^2)^2\dfrac{1}{x}+3x^2(\dfrac{1}{x})^2+(\dfrac{1}{x})^3\\\\=x^6+3x^4\dfrac{1}{x}+3x^2\dfrac{1}{x^2}+\dfrac{1}{x^3}\\\\=x^6+3x^3+3+\dfrac{1}{x^3}$

4 0

3 years ago

PLEASE HELP! Write a numerical expression involving division in which the first step in evaluating the expression is addition. D

Tanzania [10]

4/(1+3) or $\frac{4}{1+3}$

Addition is the first step for two reasons.
1) the Order of Operations requires you do operations in parentheses first
2) the division cannot be performed until you know what you're dividing

8 0

3 years ago

What number must be added to the expression below to complete the square? x2-5x

kati45 [8]

Answer:

6.25

Step-by-step explanation:

(x-a)^2=x^2-2ax+a^2

2a=5

a=2.5

2.5 ^ 2 = 6.25

3 0

3 years ago

If 50 is increased by 80%, what is the new amount?

Bingel [31]

90

Hope this helps!!:)

7 0

2 years ago

Read 2 more answers

any whole number containing 3 or more digits can be ÷ by 4 if the last two digits form a number that is divisible by 4 why?

NARA [144]

Answer:

100 is always divisible by 4. Therefore it doesn't matter which number is up front.

the two other digits are important because there are 2-digit-numbers that are not divisible by four. "14" is not divisible by four, but "24" is.

34 isn't divisible, 44 is, 54 isn't.

So both digits will need to form a number that is divisible by 4, or it will not work.

Step-by-step explanation:

n/A

8 0

2 years ago