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bonufazy [111]
3 years ago
11

Which of the following statements is NOT true regarding an expression written in scientific notation in teh form of a x 10^n?

Mathematics
2 answers:
labwork [276]3 years ago
7 0
The best and most correct answer among the choices provided by your question is the third choice or letter C which states that " <span>Doubling n results in a doubling of the value of the expression."</span>


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
GrogVix [38]3 years ago
5 0

Answer:

Option C                                  

Step-by-step explanation:

Given : An expression written in scientific notation in the form of a\times 10^n

Let x=a\times 10^n

To find : Which statement is not true for the expression.

Solution :10^n is a power, with a base of 10 and an exponent of "b".

''n" is associate whole number like the quantity of places the decimal "moves".


→  When the exponent "n" is positive (and not zero), the number "x" is greater than one.

→ The larger the exponent "n", the larger the number "x".

→  When the exponent "n" is negative, the number "x" is between zero and one.

→ The smaller the exponent "n", the nearer the quantity "x" is to zero.  

From the above statements we say that  Option C - Doubling n results in a doubling of the value of the expression is incorrect or not true

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Answer:1=d 2=d 3=a 4=a 5=c 6=b 7=b

Step-by-step explanation:

8 0
3 years ago
A simple random sample of size nequals17 is drawn from a population that is normally distributed. The sample mean is found to be
IRINA_888 [86]

Answer:

95% confidence intervals about the population mean is

(51.7656 , 60.2344)

Step-by-step explanation:

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

Given random sample of size 'n' =17

Given mean of the sample 'x⁻' = 56

Given standard deviation of sample 's' = 10

95% confidence intervals about the population mean is determined by

(x^{-} - t_{0.05} \frac{s}{\sqrt{n} } ,x^{-} + t_{0.05} \frac{s}{\sqrt{n} } )

Degrees of freedom

ν = n-1 = 17-1 =16

t₀.₀₅ = 1.7459  (from t-table)

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

95% confidence intervals about the population mean is determined by

(x^{-} - t_{0.05} \frac{s}{\sqrt{n} } ,x^{-} + t_{0.05} \frac{s}{\sqrt{n} } )

(56 - 1.7459 \frac{10}{\sqrt{17} } ,56 + 1.7459 \frac{10}{\sqrt{17} } )

( 56 - 4.2344 , 56 + 4.2344)

<em>(51.7656 , 60.2344)</em>

<u>Conclusion:</u>-

<em>95% confidence intervals about the population mean is </em>

<em>(51.7656 , 60.2344)</em>

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3 years ago
tamie uses 2/3 of a cup of water with 1/6 of a pound of flour to make a paste for a sculpture she is creating how many cups of w
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Answer: 12/18

Step-by-step explanation:

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for a fund raising activity, the student council rented a popcorn machine for $.50 pee day. they plan to sell the popcorn for $1
GrogVix [38]
In sorry but I dont know the answer
7 0
3 years ago
A kite is designed on a rectangular grid with squares that measure 1cm by 1 cm. A hexagonal piece within the kite will be reserv
Nata [24]

Answer:

The answer is the first answer

P = 8 + 4√13 cm

A = 36 cm²

Step-by-step explanation:

* Lets study the figure

- Its a kite with two diagonals

- The shortest one is 12 cm

- The longest one is 26 ⇒ axis of symmetry of the kite

- the shortest diagonal divides the longest into two parts

- The smallest part is 8 cm and the largest one is 18 cm

* To find the area reserved for the logo divide

 the hexagonal piece into two congruent trapezium

- The length of the two parallel bases are 4 cm and 8 cm and

  its height is 3 cm

- The length of non-parallel bases can calculated by Pythagoras rule

∵ The lengths of the two perpendicular sides are 2 cm and 3 cm

- 3 cm is the height of the trapezium

- 2 cm its the difference between the 2 parallel bases ÷ 2

  (8 - 4)/2 = 4/2 = 2 cm

∴ The length of the non-parallel base = √(2² + 3²) = √13

* Now we can find the area of the space reserved for the logo

- The area of the trapezium = (1/2)(b1 + b2) × h

∴ The area = (1/2)(4 + 8) × 3 = (1/2)(12)(3) = 18 cm²

∵ The space reserved for the logo are 2 trapezium

∴ The area reserved for the logo = 2 × 18 = 36 cm²

* The area of the reserved space for the logo = 36 cm²

* The perimeter of the reserved space for the logo is the

  perimeter of the hexagon

∵ The lengths of the sides of the hexagon are:

   4 cm , 4 cm , √13 cm , √13 cm , √13 cm , √13 cm

∴ The perimeter = 2(4) + 4(√13) = 8 + 4√13 cm

* The perimeter of the reserved space for the logo = 8 + 4√13 cm

4 0
3 years ago
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