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tester [92]
3 years ago
6

. If x = 7 + 4√3 then find the value of x2 – 1/x2

Mathematics
2 answers:
Katyanochek1 [597]3 years ago
8 0
Hfudeuxbdjxjdjxxjdjxhjsjdjdjd
inessss [21]3 years ago
5 0

Answer:

you can use mathpapa it works

Step-by-step explanation:

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High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The engineers
Maurinko [17]

Answer:

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(536.46, 603.54)

Step-by-step explanation:

<u><em>Step:-1</em></u>

Given that the mean of the Population = 540HP

Given that the size of the sample  'n' = 9

Given that the mean of the sample = 570HP

Given that the sample standard deviation = 30HP

<u><em>Step(ii):-</em></u>

<u><em>Degrees of freedom = n-1 =9-1 =8</em></u>

<u><em>t₀.₀₀₅ = 3.3554</em></u>

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(x^{-} - t_{\frac{0.01}{2} ,8} \frac{S.D}{\sqrt{n} } ,x^{2}  + t_{\frac{0.01}{2},8 } \frac{S.D}{\sqrt{n} } )

(570-3.354\frac{30}{\sqrt{9} } , 570+3.354\frac{30}{\sqrt{9} } )

(570 - 33.54 , 570+33.54)

(536.46 , 603.54)

<u><em>Final answer</em></u> :-

<em>The 99% of a confidence interval for the average maximum HP for the experimental engine.</em>

<em>(536.46, 603.54)</em>

<em></em>

4 0
3 years ago
Stefan borrowed 8,950 for an engagement ring. At a 6.85% simple interest rate, how much total will he have paid after 6 years
jonny [76]

Answer:

2a + 4 > 12

Step-by-step explanation:2a + 4 > 12

7 0
3 years ago
17.a. Three numbers have HCF of 12 and LCM 720. If two of the
ivolga24 [154]

Answer:

Yes it is true and 4 mark not ture

Step-by-step explanation:

3 0
3 years ago
According to a recent study, the carapace length for adult males of a certain species of tarantula are normally distributed with
seraphim [82]
Idk tbh sorry bye ok hbye
3 0
3 years ago
In a nursery class of 18 pupils, the average is
melamori03 [73]

Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

Average ages = 4.5

Average = total/no. of pupil

4.5 = x/18

x = 81

8 0
3 years ago
Read 2 more answers
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