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Anit [1.1K]
3 years ago
11

What is the component of a universal matrix retainer that serves to hold the matrix band securely in the retainer?

Mathematics
1 answer:
ioda3 years ago
8 0

Answer: Spindle

Step-by-step explanation:

in Chapter

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A multiple choice test has four possible answers for each question. Let X be the number of correct responses in a test of 100 qu
dimulka [17.4K]

Answer:

a. 4.33.

Step-by-step explanation:

If there is only one correct answer out of four alternatives, the expected proportion of correct answers is p =0.25

Sample size (n) = 100 questions

The standard deviation of a proportion 'p' is given by:

s=\sqrt{\frac{p*(1-p)}{n} }

Applying the given data:

s=\sqrt{\frac{0.25*(1-0.25)}{100}}\\s=0.0433

If X is the number of correct responses in 100 guesses, the standard deviation of X is:

\sigma = n*s=100*0.0433\\\sigma = 4.33

The standard deviation of X is 4.33 questions.

7 0
3 years ago
Dec 18, 11:45:23 AM
cestrela7 [59]

Answer: 68*

Step-by-step explanation: In pic

7 0
3 years ago
Find the area of the shaded region. use 3.14 for pi.
stepan [7]

Answer:

18 0 - 60 = 120 \\  \\  \frac{120}{360}  \times \pi {r}^{2}  \\  \frac{1}{3} \times 3.14 \times 4 \times 4 \\  = 16.75 {u}^{2}

<em>Answer</em><em> </em><em>B</em><em> </em><em>is</em><em> </em><em>correct</em><em>.</em>

8 0
3 years ago
Please help I don't under stand how to do this ​
stealth61 [152]
You want to figure out what the variables equal to, all of these are parallelograms meaning opposite sides and angles are equal to each other.

In question 1 start with 3x+10=43, this means that 3x is 10 less than 43 which is 33, 33 divided by 3 is 11 meaning x=11.

Same thing can be done with the sides 124=4(4y-1), start by getting rid of the parentheses with multiplication to get 124=16y-4, this means that 16y is 4 more than 124, so how many times does 16 go into 128? 8 times, so x=11 and y=8

Question 2 can be solved because opposite angles are the same in a parallelogram, so u=66 degrees

You can find the sum of the interial angles with the formula 180(n-2) where n is the number of sides the shape has, a 4 sided shape has a sum of 360 degrees, so if we already have 2 angles that add up to a total of 132 degrees and there are only 2 angles left and both of those 2 angles have to be the same value then it’s as simple as dividing the remainder in half, 360-132=228 so the other 2 angles would each be 114, 114 divided into 3 parts is 38 so u=66 and v=38

Question 3 and 4 can be solved using the same rules used in question 1 and 2, just set the opposite sides equal to each other
6 0
2 years ago
What is the value of z?
Ipatiy [6.2K]

Answer:

z = 23 degrees.

Step-by-step explanation:

The 3 angles of a triangle add up to 180 degrees. Therefore:

62 + 95 + z = 180

z = 180 - 95 - 62

z = 180 -  157

x = 23 degrees (answer).

8 0
3 years ago
Read 2 more answers
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