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Elina [12.6K]
3 years ago
10

Determine the scale factor of the dilation, if OA = 7 and OA' = 21.

Mathematics
1 answer:
AURORKA [14]3 years ago
7 0

Answer:

i think its 3

Step-by-step explanation:

21/7=3

The second figure OA' divided by first figure OA = 21/7=3

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Given the function f(x) = 2(3)^x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
sleet_krkn [62]

Average rate of change can be calculated by determining the rate of change at x = a, and at x = b

f’(x) =2 (3^x) ln(3)

f’(0) = 2 ln(3)

f’(1) = 6 ln(3)

f’(2) = 18 ln(3)

f’(3) = 54 ln(3)

Average:

at section A = [6 ln(3) – 2 ln(3)]/1 = 4 ln(3)

at section B = [54 ln(3) – 18 ln(3)]/1 = 36 ln(3)

section B is 9 times larger.

Based from the f’(x), f’(x) varies as the power of x. so the greater of value of x, the greater the rate of change.

8 0
3 years ago
A manufacturer of televisions subjects the equipment to a comprehensive testing process for all essential functions before the t
Vikki [24]

Answer:

The value is   P(X \ge 9) = 0.9138

Step-by-step explanation:

From the question we are told that

  The probability of passing the test is  p =  0.95

  The sample size is  n  =  10  

Generally the distribution of the comprehensive testing of equipment  follows a binomial distribution  

i.e  

         X  \~ \ \ \  B(n , p)

and the probability distribution function for binomial  distribution is  

      P(X = x) =  ^{n}C_x *  p^x *  (1- p)^{n-x}

Here C stands for combination hence we are going to be making use of the combination function in our calculators

  Generally the probability that at least 9 pass the test  is mathematically represented as

    P(X \ge 9) =  P(X = 9 ) + P(X = 10 )

=> P(X \ge 9) =  [^{10}C_9 *  (0.95)^9 *  (1- 0.95)^{10-9}] + [^{10}C_{10} *  (0.95)^{10} *  (1- 0.95)^{10-10}]

=> P(X \ge 9) =  [0.3151] + [0.5987]

=> P(X \ge 9) = 0.9138

7 0
3 years ago
Evaluate 5n for n = 2<br> Pls hurry and help- I’ll mark brainliest!!
Sveta_85 [38]

Answer:

10

Step-by-step explanation:

5 times 2 is 10.

Variables!!!!

4 0
2 years ago
Four times a number plus six times a number is equal to 8 times a number plus thirty four
Lunna [17]

4x + 6y = 8z +34
4x+6y - 8z = 34


3 0
3 years ago
A book store contains 75,972 books, divided in three sections: Science, Business, and Math.
Artyom0805 [142]
The answer is 12,662 books in the math section.

Since the science section represents 1/3 of the total books, divide 75,972 by 3.

75,972 ÷ 3 = 25,324 books in the science section.

Now, subtract 25,324 science books from the total number of books.

75,972 - 25,324 = 50,648 remaining books.

Divide the remaining books by 4 and then multiply by 3.

50,648 ÷ 4 = 12,662 • 3 = 37,986 business books.

Add the science books and business books together.

25,324 + 37,986 = 63,310 science and business books.

Subtract 63,310 from 75,972.

75,972 - 63,310 = 12,662 books in the math section.

Hope I helped!
3 0
3 years ago
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