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Masteriza [31]
3 years ago
12

when 30 bolts are tested for hardness, their indexes have a standard deviation of 3.9. Test the claim that the standard deviatio

n of the hardness indexes for all such bolts is 6.1. use a 0.01 level of significance.
Mathematics
1 answer:
HACTEHA [7]3 years ago
5 0

Answer:

nebraskan Vulunnter na bumaril sa tatlong piliponong sundalo na siyang naging hudyat ng digmaan

Check your spelling or try different keywords

Ref A: D4EA49C383DC4782B921C6733B0FE57B Ref B: SG1EDGE0220 Ref C: 2020-12-08T02:28:46Z

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Choose the correct product of (5x − 11)2. 25x2 − 110x 121 25x2 − 121 25x2 121 25x2 110x 121.
chubhunter [2.5K]

Product is the multiplication of numbers. The product of the (5x-11)² is (25x²-110x+121).

<h3>What is a Product?</h3>

A product is the multiplication of a number or expression to another expression.

We know in order to find the product of (5x-11)², we need to multiply each of the terms inside the bracket to each term in the second bracket. therefore, the solution of the problem can be given as,

(5x-11)^2\\\\= (5x-11) \times (5x-11)\\\\= (5x \times 5x)-(5x \times 11)-(5x \times 11)(11 \times 11)\\\\= 25x^2 - 55x - 55x + 121\\\\= 25x -110x +121

Hence, the product of the (5x-11)² is (25x²-110x+121).

Learn more about the Product:

brainly.com/question/6966983

5 0
2 years ago
Choose the correct answer below:
Anna007 [38]

Answer:

C

Step-by-step explanation:

The answer would have to be C cus it can't be A or D

6 0
2 years ago
(6x – 5) – x=3 =2(x + 1)​
Dmitry_Shevchenko [17]

Answer:

5/7 = x

Step-by-step explanation:

(6x – 5) – x=3 =2(x + 1)​ (distribute them)

6x + 10 - 15x = 3 - 2x  + 2

-9x + 10 = 5 - 2x

10 - 5 = -2x + 9x

5 = 7

5/7 = x

7 0
4 years ago
At 6:00 p.m., the temperature was 55 degrees f. At 11:00 p.m. that same evening, the temperature was 40 degrees f. What real num
tino4ka555 [31]
Am assuming the text of the problem is:

"At 6:00 p.m., the temperature was 55 Fahrenheit. At 11:00 p.m. that same evening, the temperature was 40 Fahrenheit. What real number represents the average change in temperature per hour?"

Average change in temperature per hour = (55 - 40)/(11 - 6)

Average change in temperature per hour = 15/5

Average change in temperature per hour = 3 Fahrenheit per hour
6 0
4 years ago
2 - x = 3<br> What is x????
zavuch27 [327]
X will equals -5 because 2-(-5)=3
6 0
3 years ago
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