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MArishka [77]
2 years ago
10

2.) FIND EF.

Mathematics
1 answer:
Naddika [18.5K]2 years ago
8 0

The measure of EF from the given diagram is 6 units

<h3>Secant secant theorem</h3>

The theorem states that if two secants are drawn from an external point to a circle, then the product of the measures of one secant's external parts is the same as the product of the other external part.

Mathematically according to the given figure;

4(4+2x) = 5(5+x)

Expand

16 + 8x = 25 + 5x

Collect the like terms

8x - 5x = 25 - 16

3x = 9

Divide both sides by 3

3x/3=. 9/3

x = 3

Find EF

EF = 2x

EF = 2(3) = 6

Hence the measure of EF from the given diagram is 6 units

Learn more on secant theorem here: brainly.com/question/10732273

#SPJ1

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Width is 4

60 divide by 15 is 4.

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"A TV show has 24 episodes. Due to the lack of time, you can only watch 5 of them. However, in order to get a gist of what the s
Juli2301 [7.4K]

Answer:15504

Step-by-step explanation:

We know to select any r no of non-consecutive  element for n consecutive elements is given by

^{n-k+1}C_k i.e. \left ( ^{n-k+1}_k \right )

Here n=24 and r=5

Therefore no of ways=^{24-5+1}C_5

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4 0
4 years ago
Which is an ordered pair on the line 2.5,14 2.25,12 1.25,5 1.5,9
Savatey [412]
I would think that all but one point would be on the line.  One way to approach this problem is to find the equation of the line based upon any two points chosen at random, and then determine whether or not the other points satisfy this equation.  Next time, would you please enclose the coordinates of each point inside parentheses:  (2.5,14), (2.25,12), and so on, to avoid confusion.
                                                               14-12
slope of line thru 1st 2 points is   m = ----------------  =  2/0.25 = 8
                                                              2.50-2.25

What is the eqn of the line:     y = mx + b becomes

                                               14 = (8)(2.5) + b; find b:

14-20 = b = -6.  Then,   y = 8x - 6.

Now determine whether (12,1.25) lies on this line.  

Is 1.25 = 8(12) - 6?  Is 1.25 = 90?  No.  So, unless I've made arithmetic mistakes, (1.25, 5) does not lie on the line thru (2.5,14) and (2.25,12).

Why not work this problem out yourself using my approach as a guide? 



5 0
3 years ago
Ellen types 205 words in five minutes. Which student has the same typing speed as Ellen?
Arada [10]

Answer:

B. Bradley

Step-by-step explanation:

We know that Ellen can type 205 words in 5 minutes. To start comparing to the other students, we need to find out how many words she can type per minute. We can divide 205 by 5 to get our answer.

x=\frac{205}{5}

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<u>Ellen can type 41 words per minute</u>. To find our answer we must find how many words per minute the other students can type. Lets start with the first and go down from there:

Alissa:

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x=11

It can't be Alissa.

Bradley:

x=\frac{328}{8}

x=41

Your answer is B. Bradley

6 0
4 years ago
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