Someone help please?

Answer:

When a card is chosen at random with replacement five times, X is the number of times a prime number is chosen.          Here the card is chosen with replacement.  This implies probability for choosing a prime number remains the same as the previously drawn card is replaced.

The sample space= {1,2,3,4,5,6,7,8,9,10}

Prime numbers = {2,3,5,7}

Prob for drawing prime number = 4/10 = 0.4

is the same when replacement is done.

Also there are two outcomes either prime or non prime.  Hence in this case, X the no of times a prime number is chosen, is binomial with p =0.4 and q = 0.6 and n=5

When a card is chosen at random without replacement three times, X is the number of times an even number is chosen.

Prob for an even number = 0.5

But after one card drawn say odd number next card has prob for even number as 5/9 hence each draw is not independent of the other.  Hence not binomial.

When a card is chosen at random with replacement six times, X is the number of times a 3 is chosen.

Here since every time replacement is done, probability of drawing a 3 remains constant = 1/10 = 0.3

i.e. each draw is independent of the other and there are only two outcomes , 3 or non 3. Hence here X is binomial.

When a card is chosen at random with replacement multiple times, X is the number of times a card is chosen until a 5 is chosen

Here X is the number of times a card is chosen with replacement till 5 is chosen.  This is not binomial.  Here probability for drawing nth time correct 5 is  P(non 5 in the first n-1 draws)*P(5 in nth draw) = 0.1^(n-1) (0.9)

Because nCr is not appearing i.e. 5 cannot appear in any order but only in the last draw, this is not binomial.

Step-by-step explanation:

Answer:

Step-by-step explanation:

hope this is helpful to anyone in the future!

Answer:

Answer is 225.

We have to find the sum of 15 terms of the series

sigma 1 to 15 (2n-1)

This can be split as per summation terms as

sigma 2n - sigma 1

sigma 2n can again be simplified by taking 2 outside

sigma 2n= 2 times sum of natural numbers of 1 to 15

= 2(15)(16)/2= 240

sigma 1= 1+1+...15 times= 15

Hence final answer is

= 2 times sigma n - (n) = 240-15 = 225.

Step-by-step explanation:

Step-by-step explanation:

Question 2) Answer

Use Arithmetic Series Formulas:

a) Nth term = F + (N - 1) x D, where F=First term, N=Number of terms, D=Common difference

6th row = 23 + (6 - 1) x -3

            = 23 + (5) x -3

            = 23 + (-15)

            = 8 - number of boxes in the top row.

b) Sum = N/2[2F + (N - 1) x D]

            = 6/2[2*23 + (6 - 1) x -3]

             = 3  [46  +    (5) x -3 ]

             = 3  [46  +      -15 ]

             = 3  [ 31 ]

             = 93 - total number of boxes in the entire display.

Question 3) Answer

Sum of the 8 first terms of the geometric progression with the first term 50 and the common ratio of 2:

=50 + 5*2 + 50*2^2 + . . . + 50*2^7

= 50*(1 + 2 + 2^2 + . . . + 2^7) = 50*(2^8-1)

= 50*(256-1) = 50*255

= 12750 Answer

I am also attached the solved question of this assignment please check and enjoy. Thanks

Answer:

1400 dollars

Step-by-step explanation:

Let the original price = 100

Less: saving of 40%   =  40

Reduced price            = 60

Reduce price of 60 is equivalent to 840 dollars

Hence original price of 100 is equivalent to

100/60 = x/840

Or x = 1400 dollars.

Original price actual = 1400 dollars.

Verify: Original price = 1400

           Less: 40%      =    560

            Reduced price  = 1400-560 =840 (given)

Hence verified

Answer:

the answer would be c. 0.40x

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.

Before we can solve this problem we need to turn the percentage into decimal form. We do this by moving the decimal to digits to the left like so...

40.0%    ⇔    0.40

Now that we have the percent in decimal form we can create the algebraic expression. To be able to find the percent of a number, we have to multiply the decimal form of the percent by the given number. That being the case the expression would be....

[tex]0.40x[/tex]

Therefore, the answer would be c. 0.40x

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

We are given

The average income, I, in dollars is

[tex]I=-425x^2+45500x-650000[/tex]

(a)

now, we are given

average income is $275000

so, [tex]I=275000[/tex]

now, we can set them equal

and then we can solve for x

[tex]275000=-425x^2+45500x-650000[/tex]

[tex]-425x^2+45500x-925000=0[/tex]

we will have to use quadratic formula

[tex]x=\frac{-45500+\sqrt{45500^2-4\left(-425\right)\left(-925000\right)}}{2\left(-425\right)}:\quad \frac{-\sqrt{45500^2-1572500000}+45500}{850}[/tex]

[tex]x=\frac{-45500-\sqrt{45500^2-4\left(-425\right)\left(-925000\right)}}{2\left(-425\right)}:\quad \frac{\sqrt{45500^2-1572500000}+45500}{850}[/tex]

we get

[tex]x=27.28199[/tex]

[tex]x=79.776[/tex]

we need to find youngest age

It means that we need to choose smallest value

so,

[tex]x=27[/tex]............Answer

(b)

we are given

x=40

so, we can plug it and find I

[tex]I=-425(40)^2+45500(40)-650000[/tex]

[tex]I=490000[/tex]..............Answer

To find the youngest age for an average income of $275,000 for a lawyer, one would solve the quadratic equation formed by setting the income function equal to $275,000 and choosing the positive solution. The predicted average annual income of a 40-year-old lawyer is calculated by plugging 40 into the income function and rounding to the nearest dollar.

The student asked two questions about a quadratic function representing the average income of a lawyer by age.

Finding the youngest age for a certain average income

To find the youngest age at which the average income of a lawyer is $275,000, we set the quadratic income function I = -425x^2 + 45,500x – 650,000 equal to $275,000 and solve for x. After simplifying, we get a quadratic equation that can be solved using factorization, completing the square, or applying the quadratic formula. Once we find the values for x, we select the positive solution since age cannot be negative, and round it to the nearest year.

Predicted average annual income for a 40-year-old lawyer

To determine the average income for a 40-year-old lawyer, we substitute x = 40 into the given income model and calculate the value of I. The result will be the predicted average annual income of a 40-year-old lawyer, rounded to the nearest whole dollar.

Im not sure but i multiplied and got 1.134 for my answer

Answer:

1/6

Step-by-step explanation:

sim[le thought

Staci has vacuumed 1/6 of the entire house tonight.

The student's question concerns the portion of housework completed by Staci. As one of her chores, Staci must vacuum 1/2 of the house. She has already vacuumed 1/3 of her share tonight. To find out what part of the entire house has been vacuumed, we multiply the two fractions together.

Staci's share to vacuum is 1/2 of the house.

She has completed 1/3 of her share, which is 1/3 of 1/2.

To calculate the portion she has vacuumed, we multiply 1/2 by 1/3:

(1/2) x (1/3) = 1/6.

Therefore, Staci has vacuumed 1/6 of the entire house tonight.

Final answer:

To find the discount percentage, subtract the sale price from the original price, divide the difference by the original price, and multiply by 100. Paolo's hat was discounted by 20%.

Explanation:

To calculate the percentage of the discount that Paolo received on the hat, we need to find the difference between the original price and the sale price, and then divide that difference by the original price. Afterward, we multiply the result by 100 to get the percentage.

The original price of the hat was $35, and Paolo paid $28. The difference between the original price and the sale price is $35 - $28 = $7. Therefore, the discount is $7.

Now, we calculate the percentage discount: ($7 / $35) x 100 = 20%. So, the hat was discounted by 20%.

x + 5.39 > 4.48

   -5.39   -5.39

x            > -0.91

Answer: x > -0.91

The answer is B I hope I helped

The measure of an interior angle of a regular septagon is approximately 128.6 degrees, calculated using the formula (((n-2) times 180) / n), where n is the number of sides.

To find the measure of an interior angle of a regular septagon (a seven-sided polygon), we can use the formula for finding the measure of an interior angle in any regular polygon: ((n-2) times 180) / n, where n is the number of sides in the polygon. For a septagon, n = 7.

Using the formula: ((7-2) times 180) / 7 = (5 times 180) / 7 = 900 / 7 ≈ 128.6 degrees.

Therefore, the measure of an interior angle of a regular septagon is approximately 128.6 degrees. Hence, the correct answer is B.) 128.6.

Answer:

[tex]\left \{ {{x+y=745} \atop {23.50x+58.75y=29,668.75}} \right.[/tex]

Step-by-step explanation:

1. You must analize the information given in the problem.

2. The first equation:

- [tex]x[/tex] represents the number of copies of the home edition sold and [tex]y[/tex] represents the number of copies of the business edition sold.

- A total of 745 copies were sold last week.

- Therefore, if you add the number of copies of the home edition sold and the number of copies of the business edition sold, you will obtain a total of 745 copies, which you can express as below:

[tex]x+y=745[/tex]

3. The second equation:

-  The cost of each version is:

[tex]23.50x\\58.75y[/tex]

- If the company earned a total of $29,668.75, you have:

[tex]23.50x+58.75y=29,668.75[/tex]

Answer:

The given Expression is

[tex]4\sqrt{16x^4y^12[/tex]

= 4 × terms under square root are non negative.so we can break it into different terms.

= 4 × √16 ×[tex]\sqrt{x^4}\times\sqrt {y^{12}}[/tex]

Breaking into factors

= 4 × [tex]\sqrt{2\times2\times\times2\times2 } \times\sqrt{x \times x \times x \times x } \times \sqrt{ y \times y \timesy \times y \timesy \times y \times y \times y \times y \times y \times y \times y \times y \times y[/tex]

= 4× [tex]2 \times2 \times x \times x \times y\times y\times y\times y\times y\times y[/tex]

= 16× [tex]x^{1+1}\times y^{1+1+1+1+1+1}[/tex]

= 16 [tex]x^2 y^6[/tex]

The solution of the expression 4√(16x⁴y¹²) will be 16x²y⁶.

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

The given expression is  4√(16x⁴y¹²). The expression will be solved as:-

E =  4√(16x⁴y¹²)

E = 4 √ [( 4 x 4 ) ( x² x x² ) ( x⁶ x x⁶ )]

E = 4 ( 4 x x² x y⁶ )

E = 16x²y⁶.

Therefore, the solution of the expression 4√(16x⁴y¹²) will be 16x²y⁶.

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Two-fifths of 1/4 acre is [tex]\(\frac{1}{10}\)[/tex]  acre planted in orange trees.

Sure, here's a detailed stepwise solution with explanation:

1. **Understand the problem**: The Avocados own a 1/4 acre orchard, and two-fifths of the orchard is planted in orange trees. We need to find the fraction of an acre planted in orange trees.

2. **Identify the fractions**: Let's represent the fractions given in the problem:

  - Fraction of the orchard planted in orange trees: [tex]\( \frac{2}{5} \) - Total acreage of the orchard: \( \frac{1}{4} \)[/tex]

3. **Multiply the fractions**: To find the fraction of an acre planted in orange trees, we multiply the fraction of the orchard planted in orange trees by the total acreage of the orchard.

4. **Perform the multiplication**: Multiply the fractions:

  [tex]\[ \frac{2}{5} \times \frac{1}{4} \] \[ = \frac{2 \times 1}{5 \times 4} \] \[ = \frac{2}{20} \][/tex]

5. **Simplify the fraction**: The fraction[tex]\( \frac{2}{20} \) can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2. \[ \frac{2}{20} = \frac{1}{10} \][/tex]

6. **Interpret the result**: The simplified fraction  [tex]\( \frac{1}{10} \)[/tex] represents one-tenth of an acre planted in orange trees.

7. **Conclusion**: Therefore, one-tenth of an acre is planted in orange trees in the Avocados' orchard.

The roots of a polynomial written in the form

[tex] (x-x_1)(x-x_2)(x-x_3)\ldots(x-x_n) [/tex]

Are exactly

[tex] x_1,\ x_2,\ x_3,\ldots x_n [/tex]

The multiplicity of a solution [tex] x_i [/tex] is how many times the parenthesis [tex] (x-x_i) [/tex] appears in the factorization of the polynomial.

So, if we write the powers explicitly, your polynomial is written as

[tex] (x + 5)^3(x - 9)^2(x + 1) = (x + 5)(x + 5)(x + 5)(x - 9)(x - 9)(x + 1) [/tex]

Which means that the solutions are:

The roots of  [tex]f(x) = (x + 5)^3(x-9)^2(x+1)[/tex] are:

-5 with multiplicity 3

9 with multiplicity 2

-1 with multiplicity 1

The given function is:

[tex]f(x) = (x + 5)^3(x-9)^2(x+1)[/tex]

The roots of the function [tex]f(x) = (x + 5)^3(x-9)^2(x+1)[/tex] are the values of x that makes f(x) to be zero

To find the roots of the function [tex]f(x) = (x + 5)^3(x-9)^2(x+1)[/tex], equate each of the terms to zero

The multiplicity of the roots is the power of the term from which the root is gotten

Equate each of the terms to zero

[tex](x+5)^3 = 0\\x + 5 = 0\\x = -5[/tex]

Since the power is 3, the multiplicity is 3

One root is -5 with a multiplicity of 3

[tex](x-9)^2 = 0\\x - 9 = 0\\x = 9[/tex]

Since the power is 2, the multiplicity is 2

One root is 9 with a multiplicity of 2

[tex](x+1)^2 = 0\\x +1 = 0\\x = -1[/tex]

Since the power is 1, the multiplicity is 1

One root is -1 with a multiplicity of 1

Therefore, the roots of  [tex]f(x) = (x + 5)^3(x-9)^2(x+1)[/tex] are:

-5 with multiplicity 3

9 with multiplicity 2

-1 with multiplicity 1

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[tex]f(x)=x^2-8\\\\g(x)=2x-5\\\\f(g(x))\to\text{instead of x write the equation of the function g(x)}\\\\f(g(x))=(2x-5)^2-8=(2x)^2-2(2x)(5)+5^2-8\\\\=4x^2-20x+25-8=4x^2-20x+17\\\\\text{used}\ (a-b)^2=a^2-2ab+b^2[/tex]

[tex]g(f(x))\to\text{instead of x write the equation of the function f(x)}\\\\g(f(x))=2(x^2-8)-5=(2)(x^2)+(2)(-8)-5=2x^2-16-5=2x^2-21[/tex]

y = - [tex]\frac{1}{4}[/tex] x + 3

the equation of a line in slope-intercept form is

y = mx +c ( where m is the slope and c the y-intercept )

rearrange x + 4y = 12 into this form

subtract x from both sides

4y = - x + 12 ( divide all terms by 4 )

y = - [tex]\frac{1}{4}[/tex] x + 3 ← in slope-intercept form

Hello,

This number is already in stranded form.

If you want it in scientific notation its : 5.4003*10^6

Hope this helps a bit.

Answer:

[tex]5.4x10^{6}[/tex]

Step-by-step explanation:

The standard form refers to the way of writing large numbers in a smaller expression using power of 10, this is also called scientific notation.

To write this number in standard form, we have to the decimal point to the position between the 5 and the 4, and all spaces jumped represent the exponent of the 10 power, as follows

[tex]5400300=5.4x10^{6}[/tex]

Therefore, the standard form would be

[tex]5.4x10^{6}[/tex]

56/7=8

Alexander was paid $8 per hour

For this problem, you don't need to know how much the pencils cost. You're only finding how much the 10 nickels are worth.

Start by knowing how much one nickel is worth. A nickel is worth five cents in US currency. Since you know the worth of one nickel, you can find the worth of ten nickels by multiplying ten nickels by five cents (0.05).

Multiply 10 by 0.05.

10 * 0.05 = 0.5

0.5 is equal to 50 cents in US currency, so this means that Ginger has 50 cents to spend to buy pencils at the school store.

Answer:

A

Step-by-step explanation:

Hope this helps

36 times 0.25 is 9

9+36=45

The original price was $45

Answer: (x - [tex]2i\sqrt{13}[/tex])(x + [tex]2i\sqrt{13}[/tex])

Step-by-step explanation:

x² + 52 = 0

x² = -52

[tex]\sqrt{x^{2} } = \sqrt{-52}[/tex]

x = +/-  [tex]\sqrt{52}[/tex]

x = +/-  [tex]i\sqrt{2*2*13}[/tex]

x = +/-  [tex]2i\sqrt{13}[/tex]

(x - [tex]2i\sqrt{13}[/tex])(x + [tex]2i\sqrt{13}[/tex]) = 0

100 (1 + 0.1)^8

= 100 (1.1)^8

= 214

Answer

214 trucks registered in the city at the end of Year 8

Answer:

You should find the discounted price of the gear first.

The discount should be calculated on the original $100 price.

Step-by-step explanation:

Now let's check the answer options:

You can simplify the problem by calculating 33% of $100.

You should find the discounted price of the gear first.

The tax should be calculated on the original $100 price.

The discount should be calculated on the original $100 price.

Answer:

You should find the discounted price of the gear first.

The discount should be calculated on the original $100 price.

Step-by-step explanation:

Your Welcome;)

Answer:

8 cookies

Step-by-step explanation

We start with 9 cookies:

9

"Giving away" 8 means subtracting 8 from 9:

9 - 8 = 1

"Buying" 7 more means adding 7 to 1:

1 + 7 = 8

Therefore, the kid has 8 cookies.

The relationship between Kelvin and degrees Celsius is not proportional in any way.

The temperature is the degree of the hotness and the coldness.

We know that

1 Kelvin = -273.15 degree Celsius

Kelvin is a unit of absolute temperature used in measurements and it can also be associated with degrees Celsius.

0 Kelvin is equivalent to -273.15 degrees Celsius.

In order to solve for the unit of temperature, the equation is:

T(Kelvin)= T(degrees Celsius) + 273.15

T(degrees Celsius) = T(Kelvin) - 273.15

The relationship between Kelvin and degrees Celsius is not proportional in any way.

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Answer:

The answer is b.

Step-by-step explanation:

You could represent the phone service price with an equation that is

y = 0.07x + 18

So the intercept in y is 18 when x is zero, that is the minimum price of the phone service.