1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scrat [10]
3 years ago
10

1. Find the circumference radius of 14 a. Give an exact answer in terms of . (1 point) b. Use ≈ 22/7 and express your answer as

a fraction in lowest terms. (1 point) c. Use h button on your calculator, and express your answer to the nearest hundredth. (1 point)
Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0

Answer:idk

Step-by-step explanation:

You might be interested in
(Apex!) Select the two values of x that are roots of this equation 3x-5=-2x^2
katovenus [111]

Answer:

B and D

Step-by-step explanation:

Write as a quadratic

-2x² - 3x + 5 = 0

Factor

-2x² - 5x + 2x + 5 = 0

-x(2x + 5) + 1(2x + 5) = 0

(1 - x)(2x + 5) = 0

To make the equation 0, x is either 1 or -5/2.

4 0
3 years ago
. Let X and Y be random variables of possible percent returns (0%, 10%,
bazaltina [42]

(a) The marginal distribution of <em>X</em> is

Pr(<em>X</em> = <em>x</em>) = ∑ Pr(<em>X</em> = <em>x</em>, <em>Y</em> = <em>y</em>)

… = 0.0625 + 0.0625 + 0.0625 + 0.0625

… = 0.25

That is, the first equality follows from the law of total probability, with the sum taken over <em>y</em> from {0, 5, 10, 15}. Each probability Pr(<em>X</em> = <em>x</em>, <em>Y</em> = <em>y</em>) is given in the table to be 0.0625.

Similarly, the marginal distribution of <em>Y</em> is

Pr(<em>Y</em> = <em>y</em>) = 0.25

(b) Yes, they're independent because

Pr(<em>X</em> = <em>x</em>, <em>Y</em> = <em>y</em>) = 0.0625,

and

Pr(<em>X</em> = <em>x</em>) Pr(<em>Y</em> = <em>y</em>) = 0.25 • 0.25 = 0.0625.

(c) The mean of <em>X</em> is

E[<em>X</em>] = ∑ <em>x</em> Pr(<em>X</em> = <em>x</em>)

… = 0.25 ∑ <em>x</em>

<em>… </em>= 0.25 (0 + 5 + 10 + 15)

… = 7.5

and you would find the same mean for <em>Y</em>,

E[<em>Y</em>] = 7.5

The variance of <em>X</em> is

V[<em>X</em>] = E[<em>X</em>^2] - E[<em>X</em>]^2

… = (∑ <em>x</em>^2 Pr(<em>X</em> = <em>x</em>)) - 7.5^2

… = 0.25 (∑ <em>x</em>^2) - 56.25

… = 0.25 (0^2 + 5^2 + 10^2 + 15^2) - 56.25

… = 31.25

and similarly,

V[<em>Y</em>] = 31.25

(each sum is taken with <em>x</em> and <em>y</em> from {0, 5, 10, 15})

7 0
3 years ago
The measure of two angles in a triangle are shown in the diagram what equation can be used to find the value of x
earnstyle [38]

Answer:

Step-by-step explanation:

5 0
3 years ago
Hi I need question 5 solved using SOH CAH TOA!
Bond [772]

According to the trigonometric functions, we can see that angle x can be found through the one that involves the adjacent side and the hypotenuse, which in this case is the cos,

cos(x)=\frac{27}{30}

then, if we apply the inverse we can find the value of x,

\begin{gathered} cos^{-1}(cos(x))=cos^{-1}(\frac{27}{30}) \\ x\cong25.8 \end{gathered}

Answer:

x\cong25.8

5 0
1 year ago
This is part of my knowledge check that's due today at 11:59 am. Please help me on this question
lys-0071 [83]
7 cm (you divide 56 by 8)
6 0
3 years ago
Other questions:
  • The area of the triangle below is __ sq units.<br> A.80<br> B.21<br> C.42<br> D.40
    8·2 answers
  • With regard to mathematics, what is in excepted statement of fact that is used to prove other statements
    15·1 answer
  • 2(n-3)=4n+1 this sucks not knowing the answer
    10·2 answers
  • Help ASAP!!!! Math!!!!
    9·1 answer
  • The dryer cleaning fee for 3 pairs of pants is $18 what is the constant of proportionality
    7·2 answers
  • What is the arithmetic mean of the following numbers? 1, 2, 10, 6, 4, 4, 6, 3, 1, 4
    14·1 answer
  • The quadratic function modeling the height of a ball over time is symmetric about the line , where t is time in seconds. Which s
    6·1 answer
  • Solve 2y - 3 = 4y +6.<br> у<br> DONE
    6·2 answers
  • 16. Solve log 1/8x=-1
    15·1 answer
  • Determine whether or not the lines are parallel based on the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!