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MrMuchimi
3 years ago
7

Six pairs of data yield r=0.444

Mathematics
1 answer:
Naddik [55]3 years ago
3 0

No lo sé cuál es la respuesta favor de hablar en español

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In the given figure AB parallel to CD then value of x is?
Sveta_85 [38]

Answer:

 x = 45

Step-by-step explanation:

AB // CD,

∠AB0 + ∠COB = 180  {Co interior angles}

   75 + ∠COB = 180

             ∠COB = 180 - 75 = 105

∠DOE =∠COB   {Vertically opposite angles}

∠DOE = 105

In ΔDOE,

x + 30 + 105 = 180    {angle sum property of triangle}

      x + 135 = 180

                x = 180 - 135

                x = 45

4 0
3 years ago
The position of an atom moving inside a cathode ray tube is given by the function f(t) = t^3− 4t^2 + 3t where t is in seconds an
murzikaleks [220]

Answer:

A

Step-by-step explanation:

The position of an atom moving inside a cathode ray tube is given by the function:

f(t)=t^3-4t^2+3t

Where f(t) is in meters and <em>t</em> is in seconds.

And we want to determine its instantaneous velocity at <em>t</em> = 2.5 seconds.

The velocity function is the derivative of the position function. Thus, find the derivative of the function:

<em />f'(t)=3t^2-8t+3<em />

<em />

Then the instantaneous velocity at <em>t</em> = 2.5 will be:

f'(2.5)=3(2.5)^2-8(2.5)+3=1.75\text{ m/sec}

Our answer is A.

3 0
2 years ago
Read 2 more answers
william was taking a math test he spent 3/4 of the class time on the test. when he turned it in he noticed there was 13 minutes
Gemiola [76]

Answer:

47 minutes

Step-by-step explanation:

3/4 of an hour is 45 minutes which makes 15 minutes remain and if it is 13 minutes left the 45 + 2 is 47

7 0
2 years ago
The algebra mat below models the equation x+3=5
Akimi4 [234]
X + 3= 5

The answer to this equation is simply 2

to do this:

subtract 3 from both sides of the equation.

3 cancels out, and you are left with this

x=2

so, the answer is x=2

or 2

Hope this helped!
7 0
3 years ago
as part of a grand opening an arcade gave out free tokens to the first 100 customers the graph shows the number of tokens custom
Anna [14]
Customers get 5 tokens per 1.00 time's
100 customers equal 500 tokens.
tokens equal 25 cents
5 tokens per dollar
25 cents times 100 equal 25.00
the arcade gave out 125.00 total.
6 0
3 years ago
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