Kendra bought a pair of $125 jeans for $93.75. What percent was taken off from the original price?

The ratio of Anson's savings to Billy's savings after the book fair was 20 : 3

Let's start by setting up some equations:

Let A be the amount of money Anson had before giving 1/10 of his savings to Billy, and let B be the amount of money Billy had at that time.

We know that the ratio of Anson's savings to Billy's savings was 3:11 before the transfer, so:

A/B = 3/11

We also know that after the transfer, Anson had 9/10 of his original savings left, so:

Anson's new savings = 9/10 A

And Billy had 1/10 of Anson's original savings, plus his original savings, so:

Billy's new savings = B + 1/10 A

We're also told that both Anson and Billy spent the same amount of money at a book fair.

Let's call that amount X.

So after the book fair:

Anson's new savings = 9/10 A - X

Billy's new savings = B + 1/10 A - X

Finally, we're told that the ratio of Anson's savings to Billy's savings was 1:9, and that Billy had $264 more than Anson. So:

(9/10 A - X)/(B + 1/10 A - X) = 1/9

B + 1/10 A - X = 264 + (9/10 A - X)

Simplifying the second equation, we get:

1/10 A + X = 264

Substituting X = 1/10 A + 264 into the first equation, we can solve for B:

(9/10 A - (1/10 A + 264))/(B + 1/10 A - (1/10 A + 264)) = 1/9

8/9 A - 2640 = B/9

B = 8/9 A - 23760

Now we can substitute this expression for B into the equation we found for X:

X = 1/10 A + 264

And we can substitute both expressions into the equation we found for Billy's new savings:

(B + 1/10 A - X) = (8/9 A - 23760 + 1/10 A - (1/10 A + 264))

Simplifying, we get:

B = 8/9 A - 23760

X = 1/10 A + 264

B + 1/10 A - X = 7/9 A - 24024

So we know that Anson had 7/9 of his original savings left after the book fair, and Billy had 2/9 of Anson's original savings plus $264:

Anson's new savings = 7/9 A

Billy's new savings = 2/9 A + 264

We also know that before the transfer, the ratio of Anson's savings to Billy's savings was 3:11. So we can set up another equation:

A/B = 3/11

Substituting our expression for B from earlier, we get:

A/(8/9 A - 23760) = 3/11

Solving for A, we get:

A = $83160

So Anson had $83160 before giving 1/10 of his savings to Billy, and Billy had $30360 at that time.

After the book fair, Anson had $50400 left, and Billy had $8316 + $264 = $8580.

Therefore, the ratio of Anson's savings to Billy's savings after the book fair was:

50400/8580 = 20/3 = 20 : 3

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Let's assume the number to be x.

According to the problem statement, the sum of a number and its reciprocal is 2 1/6 or 13/6.

So we can set up the equation:

x + 1/x = 13/6

Multiplying both sides by 6x, we get:

6x^2 + 6 = 13x

Bringing all the terms to one side, we get:

6x^2 - 13x + 6 = 0

We can solve for x using the quadratic formula:

x = [13 ± sqrt(13^2 - 4(6)(6))] / (2*6)

x = [13 ± sqrt(169)] / 12

x = [13 ± 13] / 12

So, x can be either 2/3 or 3/2. Therefore, the number is either 2/3 or 3/2.

A percentage of 25% οf the kids were οn the winning team.

Percentage is a way οf expressing a prοpοrtiοn οr fractiοn as a number οut οf 100. It is denοted by the symbοl "%".

Tο find the percentage οf kids οn the winning team, we can use the fοrmula:

percentage = (part/whοle) x 100%

In this case, the "part" is the number οf kids οn the winning team, which is 15. The "whοle" is the tοtal number οf kids whο played, which is 60. Substituting these values, we get:

percentage = (15/60) x 100% = 0.25 x 100% = 25%

Therefοre, 25% οf the kids were οn the winning team.

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Answer:

Dear Mary,

I understand your concerns about the cost of attending college and how it might not be worth it in the end. However, earning a college degree can significantly increase your earning potential and lead to greater job opportunities. In fact, individuals with a bachelor's degree earn an average of $1 million more over their lifetime compared to those with only a high school diploma. Moreover, pursuing a degree in chemical engineering can open doors to highly rewarding and well-paying career paths.

I agree that the published costs of attendance on college websites can be overwhelming, but keep in mind that these figures are often the maximum amount and many students receive financial aid to reduce their expenses. Financial aid comes in many forms, including scholarships, grants, work-study programs, and loans. Scholarships and grants do not have to be repaid, so it's worth exploring those options first. Loans can be daunting, but they can also be manageable if you borrow responsibly and budget accordingly.

It's understandable that you may feel uncertain about whether you qualify for financial aid or not, but it's always worth applying. Many families are surprised to find out that they qualify for aid that they didn't expect. The Free Application for Federal Student Aid (FAFSA) is the form used to determine your eligibility for federal and state financial aid, and it's free to complete. Private institutions may also require additional forms, so make sure to check each college's financial aid website for more information.

As for student loans, there are many repayment plans available, and you can choose one that works best for your budget. If you're having trouble finding a job after graduation, you can apply for deferment or forbearance to temporarily suspend your payments. It's important to have a plan in place for repayment, but it's also important not to let the fear of repayment stop you from pursuing your dreams.

I hope this information helps you make a more informed decision about your college plans. Remember, investing in your education can have long-lasting benefits and lead to a brighter future.

Best regards,

[Your Name]

Step-by-step explanation:

Answer:

a) The minimum normal value of the platelet count of a healthy person in usual form is 105,000,000,000 per liter (or 105 x 10^9 per L).

b) The platelet count of Allen in the usual form is 65,000,000,000 per liter (or 65 x 10^9 per L).

c) Allen needs to gain 40,000,000,000 more platelets per liter (or 40 x 10^9 per L) to reach the normal value of a healthy person.

[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]

Here's your Answer ~

A.) minimum number of platelet count for a healty person :

[tex]\qquad \sf\dashrightarrow \:105000000000 \: \: per \: litre[/tex]

[ That's the usual form, you just need to add 9 zeros to the value ]

B.) The value of platelet count of Allen :

[tex]\qquad \sf\dashrightarrow \:65000000000 \: \: per \: litre[/tex]

C.) platelet count she should gain to be equal to the normal value :

[tex]\qquad \sf  \dashrightarrow \: 105 \times 10 {}^{9} - 65 \times 10 {}^{9} [/tex]

[ taking 10⁹ common ]

[tex]\qquad \sf  \dashrightarrow \: 10 {}^{9} (105 - 65)[/tex]

[tex]\qquad \sf  \dashrightarrow \: 40 \times 10 {}^{9} \: \: per \: \: litre[/tex]

In normal value, it will be :

[tex]\qquad \sf\dashrightarrow \:40000000000 \: \: per \: litre[/tex]

The area in square miles (rounded to the nearest integer) is:

area = 2,492 square miles.

Here we need to perform a change of units from acres to square miles. We know the relation:

1 square mile = 640 acres.

And we want to find the area of a park with 1,505,011 acres in square miles.

We can rewrite the relation above as:

1 acre = (1/604) square miles.

Then the area of the park will be:

Area = 1,505,011 acres  = 1,505,011*(1/604) square miles

Area = 2,491.74 square miles.

Rounding to the nearest integer we will get:

area = 2,492 square miles.

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Answer:

490 newtons

Step-by-step explanation:

(a) The probability that exactly one letter will be placed in the correct envelope is 1/2.

(b) The probability that exactly n−1 letters will be placed in the correct envelopes is 0.

(a) There are three possible ways that one letter can be placed in the correct envelope (A in A, B in B, or C in C) and six total possible arrangements of the letters (ABC, ACB, BAC, BCA, CAB, CBA).

Solving for the probability:

P = 3/6 = 1/2

(b) If n−1 letters are placed in the correct envelopes, then the remaining letter must also be placed in the correct envelope, resulting in all n letters being placed in the correct envelopes. Therefore, it is impossible for exactly n−1 letters to be placed in the correct envelopes.

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Match the description with the step accordingly:

How many times larger is 2 × 10⁻² then 3 × 10⁻⁶: Divide the larger Scientific Notation by the smaller Scientific Notation - divide coefficients and subtract exponents.

Difference between 2 × 10⁻² and 3× 10⁻⁶: Subtract by getting the same exponent to be like terms.

400 times 2 × 10³: Multiply by changing the number to Scientific Notation - multiply coefficients and add exponents.

Scientific notation is a way of expressing numbers that are too large or too small (usually would result in a long string of digits) to be conveniently written in decimal form.

To find How many times larger is 2 × 10⁻² then 3 × 10⁻⁶. Divide the larger Scientific Notation by the smaller Scientific Notation - divide coefficients and subtract exponents. That is:

(3 × 10⁻⁶)/(2 × 10⁻²) = 3/2 × 10⁻⁶⁻⁽⁻²⁾ = 1.5×10⁻⁴

To find the difference between 2 × 10⁻² and 3× 10⁻⁶. Subtract by getting the same exponent to be like terms. That is:

2×10⁻² - 3×10⁻⁶ = (2 × 10⁻²) - (0.0003× 10⁻²)

                           = (2 - 0.0003) × 10⁻²

                           = (2 - 0.0003) × 10⁻²

                           = 1.9997× 10⁻²

For 400 times 2 × 10³. Multiply by changing the number to Scientific Notation - multiply coefficients and add exponents. That is:

400 × 2 × 10³ = 4 × 10² × 2 × 10³

                     = 4 × 2 × 10³ × 10²

                     = 4 × 2 × 10³⁺²

                     = 8 × 10⁵

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Another inequality that describes the solutions would be: x ∈ (4, ∞)

What is inequality ?

In mathematics, an inequality is a statement that compares two values, expressions, or quantities, and asserts that they are not equal. Inequalities are often expressed using inequality symbols such as < (less than), > (greater than), ≤ (less than or equal to), or ≥ (greater than or equal to).

The inequality 3x > 12 can be solved by dividing both sides by 3:

3x/3 > 12/3

x > 4

This means that all values of x greater than 4 are solutions to the inequality 3x > 12.

This notation represents the interval of all real numbers greater than 4, including 4 itself. The symbol "(" means that 4 is not included in the interval, while "∞" indicates that the interval extends indefinitely to the right.

Therefore, Another inequality that describes the solutions would be: x ∈ (4, ∞)

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The answer to this question is as follows Given that this is a equation contradiction, 4C(-3) = 8 cannot be satisfied for any value of C. As a result, this equation cannot be solved.

A mathematical equation links two statements and utilises the equals sign (=) to indicate equality. In algebra, an equation is a mathematical assertion that proves the equality of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign separates the numbers by a gap. A mathematical formula may be used to determine how the two sentences on either side of a letter relate to one another. The logo and the particular piece of software are usually identical. like, for instance, 2x - 4 = 2.

4C(-3) = 8

The phrase 4C(-3), which calls for multiplying 4 by the value of C when it equals -3, has to be evaluated.

4C(-3) = 4 x C(-3) (-3)

We must now determine what C(-3) is. This requires entering -3 for the C expression:

C(-3)

By understanding that this phrase refers to the value of C when it is equal to -3, we can make it simpler. C(-3) thus equals 3.

When we add this value back into the formula, we obtain:

4C(-3) = 4 x C(-3) = 4 x (-3) = -12

But, because we were informed that 4C(-3) = 8, we have:

8 = -12

Given that this is a contradiction, 4C(-3) = 8 cannot be satisfied for any value of C. As a result, this equation cannot be solved.

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The dimensions of the rectangle are: length: 20 units and width: 3 units.

To solve the problem, we can set up an algebraic equation using the formula for the area of a rectangle, which is A = length × width.

Let x be the length of the rectangle, and x - 17 be the width.

Then we can set up the equation:

60 = x(x - 17)

Simplifying the equation gives us:

x² - 17x - 60 = 0

Now we can factor the equation:

(x - 20)(x + 3) = 0

This gives us two possible solutions for x:

x = 20 or x = -3

However, since the length of a rectangle cannot be negative, we can disregard the second solution.

Therefore, the length of the rectangle is 20 units, and the width is 20 - 17 = 3 units.

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The domain of the piecewise function g of x is (–∞, 2) ∪ (2, ∞)

What are Functions?

A function is a mathematical rule that takes an input value and produces a unique output value. It can be thought of as a machine that transforms input values into output values.

The domain of the piecewise function g of x is (–∞, 2) ∪ (2, ∞), since the expression x squared plus 2 times x minus 8 is equal to zero when x is equal to negative 4 and 2, but the function is undefined at x equals negative 4 and x equals negative 5 due to the logarithmic function.

Therefore, the domain is all real numbers except for x equals negative 4 and x equals negative 5.

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Answer:

Ava has 25 books initially, then gives away 7 books, leaving her with 25 - 7 = 18 books.

After Tom gives her 12 books, she will have 18 + 12 = 30 books.

Therefore, Ava has 30 books now.

Answer:

She would have 30 books

Step-by-step explanation:

25 - 7 + 12 = 30

The ordered pair (1,-3) is a solution to the given system, while the ordered pair (0,0) is not

practice is a great way to help you understand how to determine whether ordered pairs are solutions to a given system. In this case, we are looking at the system:

3x+y=0

x+2y=-5

To determine whether the ordered pairs (0,0) and (1,-3) are solutions, we need to plug them into the equations and see if they make the equations true.

For the first ordered pair (0,0), we plug in x=0 and y=0 into the equations:

3(0)+(0)=0

(0)+2(0)=-5

The first equation is true, but the second equation is not. Therefore, (0,0) is not a solution to the system.

For the second ordered pair (1,-3), we plug in x=1 and y=-3 into the equations:

3(1)+(-3)=0

(1)+2(-3)=-5

Both equations are true, so (1,-3) is a solution to the system.

In conclusion, the ordered pair (1,-3) is a solution to the given system, while the ordered pair (0,0) is not.

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The missing sides are 6.9 cm and 9.8 cm

A right triangle, also known as a right-angled triangle, is a triangle that has one angle measuring 90 degrees, which is known as a right angle. The side opposite the right angle is called the hypotenuse, while the other two sides are called the legs or the adjacent and opposite sides.

We know that;

Sin 35 = opposite/12

Opposite = 12 sin 35

= 6.9 cm

Cos 35 = adjacent/12

adjacent = 12 cos 35

adjacent = 9.8 cm

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Using the slope-intercept form we know that Astrid is correct as the slope of the line is -4.

You can use the slope-intercept formula, y = mx + b, when you know the slope of the line to be studied and the provided point is also the y-intercept (0, b).

The formula's symbol b stands for the y value of the y-intercept point.

y=mx+b is a formula that expresses a line's slope and y-intercept.

The point where the line crosses the y-axis is known as the y-intercept and is typically represented in coordinate form as (0,b).

So, according to the given description of the slope-intercept form, we know that:

m = -4 and b = 1/3

Hence, we know that Astrid is correct.

Therefore, using the slope-intercept form we know that Astrid is correct as the slope of the line is -4.

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Answer:

Neil:

Sima:

Step-by-step explanation:

Neil:

Sima:

The expression can be written as a single logarithm using the laws of logarithms as: 2logx(y)+logx(z/y).

The exponent or power to which a base must be increased in accordance with the laws of logarithms to arrive at a certain number. If bx = n, then x is the logarithm of n to the base b, which is expressed mathematically as x = logb n

Using the laws of logarithms, we can combine the given expression as follows:

2 log(x) - log(y) + log(z)

Now, using the law of logarithmic addition, we can combine the second and third terms as follows:

2 log(x) + log(z/y)

Therefore, the given expression as a single logarithm is:

2 log(x) + log(z/y)

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The electric field outside the pipe is E(r) = σa² / ε_0r².

The electric field inside the pipe is E(r) = σa²/ ε_0r.

Assuming the metallic pipe is infinitely long, we can use Gauss's Law to determine the electric field both inside and outside the pipe.

Let's consider a cylindrical Gaussian surface of radius r and length L, with its axis coinciding with that of the pipe.

By Gauss's Law, the electric flux through the surface is given by:

Φ_E = ∫ E . dA = E x 2πrL

where;

The charge enclosed by the Gaussian surface is given by:

Q_enc = σ x π(2a)² x L

= 4πa²σL

where;

By Gauss's Law, the electric flux through the Gaussian surface is also given by:

Φ_E = Q_enc / ε_0

where;

Equating the two expressions for Φ_E, we get:

E x 2πrL = 4πa²σL / ε_0

Simplifying, we get:

E = σa² / ε_0r for r < a

E = σa² / ε_0r^2 for r > a

Therefore, the electric field inside the pipe (r < a) is inversely proportional to the distance from the axis, while outside the pipe (r > a) it is inversely proportional to the square of the distance from the axis.

To summarize:

Outside the pipe: E(r) = σa² / ε_0r²

Inside the pipe: E(r) = σa² / ε_0r

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Answer:

18/40

or

9/20

Step-by-step explanation:

13 marbles are initially removed.

40 - 13 = 27

1/3 of that is removed.

27 - 9 = 18

We take whatever is left over (18 marbles), and put it in a fraction to represent what fraction is left over from 40.

18/40

or

9/20

The factored form of the expression is 8(x+7).

The expression 8x+56 can be factored by finding the common factor of both terms. The common factor in this case is 8, since 8 can be evenly divided into both 8x and 56.

To factor the expression, we can use the distributive property to pull out the common factor of 8 from both terms:

8x+56 = 8(x+7)

Therefore, the factored form of the expression is 8(x+7).

Answer: 8(x+7)

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If f(x)=2x+1 and g(x)=x^2 +5, the value of  g(f(2)) = 30.

The question is asking to evaluate the composition of the two functions, g(f(2)). This means that first the innermost function, f(2), needs to be evaluated, and the result substituted in place of f(2) in the expression for g(f(2)).

First, evaluating f(2) yields f(2) = 2*2 + 1 = 5. Then, substituting 5 in place of f(2) in the expression for g(f(2)) yields g(f(2)) = g(5) = 5^2 + 5 = 30.

Therefore, the answer to the question is g(f(2)) = 30.

A composite function is a function evaluated on another function.

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Answer:

V(t)= 900(0.8) ^t

Step-by-step explanation:

900[tex]x^{3}[/tex]=460.8

      [tex]x^{3}[/tex]=0.512

        x=0.8

Answer:

b

Step-by-step explanation:

Answer:

csc(0)= 25/7

sec(0)= 25/24

cot(0)= 24/7

Step-by-step explanation:

Answer:

csc Θ = 25/7

sec Θ = 25/24

cot Θ = 24/7

Step-by-step explanation:

csc Θ = 1/sin Θ

sin Θ = opp/hyp

csc Θ = hyp/opp

csc Θ = 25/7

sec Θ = 1/cos Θ

cos Θ = adj/hyp

sec Θ = hyp/adj

sec Θ = 25/24

cot Θ = 1/tan Θ

tan Θ = opp/adj

cot Θ = adj/opp

cot Θ = 24/7

The cost per square foot of the remaining sheet metal is $4.10.

To find the cost per square foot of the remaining sheet metal, we can first calculate how much sheet metal is remaining by solving the equation:

7.6X - 3.5X = 65.6

where X is the amount of sheet metal remaining in square feet.

Simplifying the left side of the equation gives:

4.1X = 65.6

Dividing both sides by 4.1 gives:

X = 16

Therefore, the amount of sheet metal remaining is 16 square feet.

To find the cost per square foot, we can divide the cost of the remaining sheet metal by the amount of sheet metal remaining:

$65.60 / 16 sq. ft. = $4.10 per square foot.

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The value of x is 18.4.

Right angled triangle are those triangle for which one of the angle is 90 degrees.

Given that,

sin (2x + 7)° = cos (3x - 9)°  [Equation 1]

We have the trigonometric rule that,

cos (θ) = sin(90 - θ)

So, cos (3x - 9)° = sin (90 - (3x - 9))

So from equation 1,

sin (2x + 7)° = sin (90 - (3x - 9))

Equating,

2x + 7 = 90 - (3x - 9)

2x + 7 = 90 - 3x + 9

2x + 7 = 99 - 3x

5x = 92

x = 18.4

Hence the value of x is 18.4.

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Each child will receive 0.8 (or 4/5) of a cake.

To solve this problem, we need to divide 4 small cakes equally among 5 children. This means we need to divide the total number of cakes by the number of children.

To represent this visually, we can draw 4 small cakes and divide them into 5 equal parts. Each part represents the portion of a cake that each child will receive.

The drawing is in the image attached.

Therefore, each child will receive 0.8 (or 4/5) of a cake.

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