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Different ______ of an element have different numbers of electrons.1.ions2.isotopes3.compounds4.atoms

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Answer: 1. Ions

Explanation: Ions of an element are formed when an atom lose or gain electrons and thus different ions will have different electrons.

For example Na^+ with 10 electrons is formed when Na with 11 electrons loses one electron. Na^- with 12 electrons is formed when Na with 11 electrons gains one electron.

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The graph represents function 1 and the equation represents function 2: A graph with numbers 0 to 4 on the x-axis and y-axis at increments of 1. A horizontal straight line is drawn joining the ordered pairs 0, 3 and 4, 3. Function 2 y = 6x + 1 How much more is the rate of change of function 2 than the rate of change of function 1? A. 5 B. 6 C. 7 D. 8

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The graph represents function 1 and the equation represents function 2: A graph with numbers 0 to 4 on the x-axis and y-axis at increments of 1. A horizontal straight line is drawn joining the ordered pairs 0, 3 and 4, 3. Function 2 y = 6x + 1 How much more is the rate of change of function 2 than the rate of change of function 1? A. 5 B. 6 C. 7 D. 8

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The sum of two numbers is 42 . The smaller number is 10 less than the larger number. What are the numbers?

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The sum of two numbers is 42 . The smaller number is 10 less than the larger number. What are the numbers?

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A proportion is an equation that states two _____ are equal. 1. Variables 2. Ratios 3. Expressions 4. Numbers

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A proportion is an equation that states two _____ are equal. 1. Variables 2. Ratios 3. Expressions 4. Numbers

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At the city museum, child admission is $6.40 and adult admission is $9.60. On Tuesday, 160 tickets were sold for a total sales of $1305.60. How many adult tickets were sold that day? numbers of adult tickets

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X = children

Y = adult

6.40x + 9.60y = 1305.60

x + y =160

x=160-y

6.40(160-y) + 9.60y = 1305.60

1024 + 6.40y +9.60y = 1305.60

1024 = 3.2y = 1305.60

3.2y = 281.6

Y = 281.6/3.2 = 88

 So 88
adult tickets were sold

 

Double check now

X = 160-y

X=160-88 = 72

6.40 x 72 = 460.80

9.60 x 88 = 844.80

844.80 + 460.80 = 1305.60 this checks

88 + 72 = 160 this checks

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Samples of size n = 90 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator, and the variance is found for each sample. What is the distribution of the sample variances?

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Answer:

chi square distribution with df = n-1

Step-by-step explanation:

Given that sample of size n=90  are randomly selected from the population of numbers (0 through 9) produced by a random-number generator

Since sample size is large and randomness is followed we can assume that the variable follows a normal distribution.

Hence the sample variance would follow a chi square distribution with degree of freedom = n-1\=89

This is because we have frac{x-mu}{sigma} is standard normal hence square will be a chisquare variate.  When we sum n variates we get chi square distribution with df n-1

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Let f(x)=5/x and g(x) =2x^2+5x. What two numbers are not in the domain of F o G?

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Answered by answersmine AT 22/10/2019 – 03:33 AM

F(x)=5/x
g(x)=2(x^2)+5x
f(x) has a domain of all real numbers excluding zero
g(x) has a domain of all real numbers
fog(x)=5/(2(x^2)+5x)
fog(x)=5/(x(2x+5))
fog(x) has a domain that excludes both zero and -5/2

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The sum of three consecutive natural numbers is 528, find the numbers.

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The sum of three consecutive natural numbers is 528, find the numbers.

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Two groups of students were asked how many hours they spent reading each day. The table below shows the numbers for each group: Group A 1 2 1 1 3 3 2 2 3 Group B 3 2 3 2 2 2 1 1 2 Based on the table, which of the following is true? The interquartile range for Group A students is 0.5 less than the interquartile range for Group B students. The interquartile range for Group A students is equal to the interquartile range for Group B students. The interquartile range for Group A employees is 0.5 more than to the interquartile range for Group B students. The interquartile range for Group A employees is 1 more than the interquartile range for Group B students.

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Solution:

Data represented as number of hours spent in studying by Group A Students:

 1,2,1,1,3,3,2,2,3

Arranging it in ascending order: 1,1,1 ,2, 2, 2, 3, 3, 3,

As number of terms is odd, The median will be middle value of observation.Which is 2.

The Data arranged in ascending order are , (1,1,1,2),2(2,3,3,3).

Median of (1,1,1,2) = Q_{1}=1

Median of (2,3,3,3)=Q_{3}=3

D_{1}=Interquartile Range =Q_{3}-Q_{1}=3-1=2

For Data Set 2,

The Data for group B students are:  3   2 3 2 2 2 1 1 2

Arranging in ascending order: 1,1,2,2,2,2,2,3,3

total number of observation = 9

Median = 2

Arranging the data as : (1,1,2,2) 2,(2,2,3,3)

Median of (1,1,2,2)= Number of observation is 4 which is even , so Median=Q_{1} =  frac{1+2}{2}=frac{3}{2}

Median of (2,2,3,3)=Q_{3}frac{3+2}{2}=frac{5}{2}

S=Interquartile Range = Q_{3}-Q_{1}=frac{5}{2}-frac{3}{2}=1

D_{1}= S + 1

Interquartile range for Group A Students =Interquartile range for Group B students + 1

Option (D) The interquartile range for Group A employees is 1 more than the interquartile range for Group B students is true.

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Rewrite 35 +63 as two factors. One factor is the GCF and the other is the sum of two numbers that do not have a common factor

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Answered by answersmine AT 22/10/2019 – 03:45 AM

To find this answer you would need to first find the GCF, which would be 7. Next, you would take both numbers (35 and 63) and divide them by 7, getting 5 and 9, and adding them together you would get 14. So your answer would be 7 and 14, since when you multiply those numbers, you get 98, which is the sum of 35 and 63.

Post your answer

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What is the range of the function f(x) = – 1/3 |x − 1| − 2? all real numbers all real numbers less than or equal to −2 all real numbers less than or equal to 1 all real numbers greater than or equal to −2

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What is the range of the function f(x) = – 1/3 |x − 1| − 2? all real numbers all real numbers less than or equal to −2 all real numbers less than or equal to 1 all real numbers greater than or equal to −2

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What are other questions similar to?: If f(x) = x^2 – 9 / x^2 – 4, the domain of x is all real numbers except A) -2 and 2 B) -3 and 3 C) 0 D) 2 E) 2 and 3. (The answer for this question is A)

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What are other questions similar to?: If f(x) = x^2 – 9 / x^2 – 4, the domain of x is all real numbers except A) -2 and 2 B) -3 and 3 C) 0 D) 2 E) 2 and 3. (The answer for this question is A)

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The sum of two numbers is 52. The difference is 38. What are the two numbers?

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The sum of two numbers is 52. The difference is 38. What are the two numbers?

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List the set of all even numbers between 2 and 10, inclusive.

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List the set of all even numbers between 2 and 10, inclusive.

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S(n) is function that squares numbers. It can be written in equation form as S(n)=n^2. What is the value of S(13)?

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S(n) is function that squares numbers. It can be written in equation form as S(n)=n^2. What is the value of S(13)?

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Select the true statement about the series, ¾ + 7/8 + 11/12 + 15/16… A) The Series Given is n/n+1, where n is the natural number B)The series is divergent C)The series is n+4/s +4 times the sequence, where S and N are natural numbers D)The series is Convergent

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Select the true statement about the series, ¾ + 7/8 + 11/12 + 15/16… A) The Series Given is n/n+1, where n is the natural number B)The series is divergent C)The series is n+4/s +4 times the sequence, where S and N are natural numbers D)The series is Convergent

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Given int variables k and total that have already been declared, use a for loop to compute the sum of the squares of the first 50 counting numbers, and store this value in total. thus your code should put 1*1 + 2*2 + 3*3 +… + 49*49 + 50*50 into total. use no variables other than k and total.

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Given int variables k and total that have already been declared, use a for loop to compute the sum of the squares of the first 50 counting numbers, and store this value in total. thus your code should put 1*1 + 2*2 + 3*3 +… + 49*49 + 50*50 into total. use no variables other than k and total.

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Prove that for all natural numbers n 8n-3n is divisible by 5

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Prove that for all natural numbers n 8n-3n is divisible by 5

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Find a linear approximation of the function f(x)=sqrt[3]{1+x} at a=0, and use it to approximate the numbers sqrt[3]{.96} and sqrt[3]{1.02}

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Answer:

5 in 0.05 is 10 times greater than 5 in 0.005.

Step-by-step explanation:

To find : In which number does the digit 5 have greater value 0.05 or 0.005 how many times as great is it and how do you know ?

Solution :

According to the place value stem,

Ones      Tenths      Hundredths     Thousandths

 0              0                   5                                           – 0.05

 0              0                   0                        5                 – 0.005

In 0.05 5 is in hundredths place and in 0.005 5 is in thousandths place.

So, 5 in 0.05 is 10 times greater than 5 in 0.005.

As 0.05=5times frac{1}{100}

0.005=5times frac{1}{1000}

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Write the ratio as a ratio of whole numbers using fractional notation. Write the fraction in simplest form. 8 to 30

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Write the ratio as a ratio of whole numbers using fractional notation. Write the fraction in simplest form. 8 to 30

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Gino is buying wood screws at the corner hardware store. The table shows different numbers of bags of screws and their corresponding prices. Bags of Screws Price ($) 2 10 4 20 7 35 According to the table, the relationship between the number of bags and the price is .

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Gino is buying wood screws at the corner hardware store. The table shows different numbers of bags of screws and their corresponding prices. Bags of Screws Price ($) 2 10 4 20 7 35 According to the table, the relationship between the number of bags and the price is .

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The sum of two numbers is 44 . Their difference is 22 .

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The sum of two numbers is 44 . Their difference is 22 .

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The ratio of two numbers is 5/6. the second number is 16 less than twice the first number. find both numbers

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Answer:

Number of copy machines must be made to minimize the unit cost=160.

Step-by-step explanation:

We are given that the unit cost function C ( the cost in dollars to make each copy machine)

If machines are made =x

Then the unit cost function is given by

C(x)=0.8x^2-256x+25939

We have to find the number of copy machines for  minimize the unit  cost

C(x)=0.8x^2-256x+25939

Differentiate with respect to x

Then we get

frac{mathrm{d}C}{mathrm{d}x}=1.6x-256 ……(equation I)

To find the value of x then we susbtitute frac{mathrm{d}C}{mathrm{d}x} is equal to zero

frac{mathrm{d}C}{mathrm{d}x}=0

1.6x-256=0

1.6x=256

x=frac{256}{1.6}

By using division property of equality

x= 160

Again differentiate the equation I with respect to x then we get

frac{mathrm{d}^2 C}{mathrm{d}^2 x}=1.6 >0

Hence, the unit cost is minimize for x=160

Therefore, the number of copy machines must be made to minimize the unit cost =160

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What is the domain of the functionf(x)=x+1/x^2-6x+8 ? all real numbers all real numbers except –1 all real numbers except –4 and –2 all real numbers except 2 and 4

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What is the domain of the functionf(x)=x+1/x^2-6x+8 ? all real numbers all real numbers except –1 all real numbers except –4 and –2 all real numbers except 2 and 4

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Which of the following catorgories of numbers describes the square root of 12

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Which of the following catorgories of numbers describes the square root of 12

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