A radioactive element has a half-life of 34 years. How long will it take for 21% of a sample to remain after decay begins? Round your answer to the nearest year.

According to given conditions, I will earn $913,441.60.

What is interest ?

Interest is the cost of borrowing money, usually expressed as a percentage of the amount borrowed. It is also the amount earned on an investment, usually expressed as a percentage of the amount invested. The rate of interest is determined by factors such as the level of risk involved, the term of the loan or investment, and prevailing market conditions.

To calculate the monthly deposit required, we can use the formula for the future value of an annuity:

FV = P * (((1 + r/n)[tex]^{(n*t)}[/tex]- 1) / (r/n))

where FV is the future value, P is the monthly deposit, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years.

In this case, we want to solve for P, so we can rearrange the formula:

P = FV * (r/n) / (((1 + r/n)[tex]^{(n*t)}[/tex]- 1))

Substituting the given values, we get:

P = 600000 * 0.04/12 / (((1 + 0.04/12)[tex]^{(12*25)}[/tex]- 1))

Simplifying and solving for P, we get:

P ≈ $1,518.14 per month

To calculate the interest earned, we can use the formula:

I = FV - P * t

where I is the interest earned, FV is the future value, P is the monthly deposit, and t is the number of years.

Substituting the given values, we get:

I = 600000 - 1518.14 * 12 * 25

Simplifying, we get:

I ≈ $913,441.60

Therefore, according to given conditions, I will earn $913,441.60.

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The value of x in the figure and given in the task content is; x = 64.

As evident in the task content; the figure is a triangle with angle measures; 63°, 56° and (x - 3)°.

Since the sum of interior angles of a triangle is; 180°.

Therefore, we have;

63° + 56° + (x - 3 )= 180°

open parenthesis

63 + 56 + x - 3 = 180°

x = 180 + 3 - 63 - 56

x = 64°.

Ultimately, the value of variable, x from the triangle is; 64°.

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Answer:

Raju spent a total of Rs 919.50. He bought 4 books at Rs 222.75 each, which cost Rs 891, and 2 books at Rs 14 each, costing Rs 28.50

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let's first calculate the total cost of the 4 books that Raju bought:

Cost of 1 book = Rs 222.75

Cost of 4 books = 4 x Rs 222.75 = Rs 891

Now, let's calculate the amount of money Raju received by selling 2 books at Rs 14 each:

Amount received by selling 1 book = Rs 14

Amount received by selling 2 books = 2 x Rs 14 = Rs 28

Therefore, the total cost of 4 books is Rs 891 and the total amount received by selling 2 books is Rs 28. To find Raju's overall expenditure, we need to subtract the amount received from the total cost of 4 books:

Raju's overall expenditure = Total cost of 4 books - Amount received by selling 2 books

= Rs 891 - Rs 28

= Rs 863

Therefore, Raju's overall expenditure is Rs 863.

The expanded form of 19,502 is 1 x 10,000 + 9 x 100 + 5 x 10 + 0 x 1 + 2 x 1

From the question, we have the following parameters that can be used in our computation:

19,502

The number 19,502 in expanded form is:

1 ten thousand + 9 hundreds + 5 tens + 0 ones + 2 units

So, in expanded form, 19,502 is written as:

Represent the words with numbers

So, we have the following representation

10,000 + 9 x 100 + 5 x 10 + 0 x 1 + 2 x 1

Hence, the expanded form is 1 x 10,000 + 9 x 100 + 5 x 10 + 0 x 1 + 2 x 1

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Complete question

5) Which is 19,502 in expanded form.

(a) 1 x 9000 + 10x 50 + 2 x 1

(b) 1 x 1000 + 9 x 1000 + 5 x 100 + 2 x 1

(c) 1 x 10000+ 9 x 1000 + 5 x 100 + 2 x 1

Answer:

Aisha, Arsenio

Step-by-step explanation:

Because it adds up to a total of 180 degrees

The required real diameter of the tin is 250 mm.

Diameter is the length of a straight line drawn through the center of a circular object, such as a circle or sphere. It is the distance between two locations on the object's edge that are furthest apart and pass through the object's center.

Here,

If the diameter of the tin in the picture is 10 cm, then the actual diameter of the tin can be calculated as:

To convert the actual diameter to millimeters (mm), we can multiply by 10:

Therefore, the real diameter of the tin is 250 mm.

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Full Question:
See the attached.

The population of 2 guppy fishes that grows at a rate of 1700% per month indicates;

A population growth formula is a formula of the form; A = P·(1 + r)^t, where, A is the amount after a period of t months, (or days or years), at a growth rate of r.

Number of guppy fish bought = 2

Rate at which guppy populations grow = 1700% per month

The formula that models the population of guppies can be obtained as follows;

The population growth equation is an exponential formula that can be modeled using the following equation;

Where;

A = The number after the number of months

P = The initial population of the guppy fish = 2

r = The percentage growth rate = 1700%

t = The time of growth in months = 4

Therefore, after 4 months the population of guppy fish will be;

A = 2 × (1 + 17)^4 = 209952

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The inequality expression x - 5 > 10 has its solution to be x > 15

From the question, we have the following parameters that can be used in our computation:

x - 5 > 10

The above is an inequality; this is so because an inequality is a mathematical statement that compares two values or expressions, typically using symbols such as < , >, ≤, or ≥

Add 5 to both sides of the inequality expression

So, we have the following representation

x - 5 + 5 > 10 + 5

Evaluate the like terms

So, we have the following representation

x > 15

The above expression cannot be further simplified

Hence, the solution to the expression is x > 15

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Answer: 15

Step-by-step explanation: to find a percent of a number you use the formula :  ( % x N )/100 where N is the number you are trying to find the percent of. So here 15x100= 1500 and this divided by 100 is 15

Answer:

15

Step-by-step explanation:

of means "x"

15% of which were well done

who is the which they refer here?

15% of 100 burgers were well done

15% x 100 burgers

15/100 x 100 burgers = ans

Answer:

Step-by-step explanation:

I don’t understand this app how do I use it

The coordinates of each point after the quadrilateral RSTU is rotated 90 degrees about the origin are;

M = (1, 2)

N = (2, 4)

P = (4, 5)

Q = (3, 3)

The coordinates of the quadrilateral RSTU is

R = (1, -2)

S =(2, -4)

T = (4, -5)

U = (3, -3)

When the quadrilateral RSTU is rotated 90 degrees about the origin, it forms the quadrilateral MNPQ which has the coordinates

M = (1, 2)

N = (2, 4)

P = (4, 5)

Q = (3, 3)

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Answer:

10

Step-by-step explanation:

(-9,5) (-9,-5)

[tex]x_{1} = -9\\y_{1} =5\\x_{2} =-9\\y_{2} =-5[/tex]

[tex]\sqrt{(x_{2}-x_{1})^{2} + (y_{2} -y_{1} )^{2} }[/tex]

[tex]\sqrt{(-9-(-9)^{2} +(-5-5)^{2} }[/tex]

[tex]\sqrt{(-9+9)^{2}+(-5-5)^{2} }[/tex]

[tex]\sqrt{(0)^{2}+(-10)^{2} }[/tex]

[tex]\sqrt{0+100}[/tex]

[tex]\sqrt{100} =[/tex] 10

The correct option is (b) i.e. the given inequality best describes the situation.

What is an inequality?

inequality, a declaration of the relation of greater, greater than or equal to, smaller, or less than or equal to between two numbers or algebraic expressions. Theorems are statements of fact that express an inequality. Inequalities can also be expressed as questions that are solved using methods similar to those used to solve equations.

Given : She receives 80 rewards points just for signing up

           She earns 11.5 points for each visit to the movie theater

the min. number of visits she needs to visit = v

and, She needs at least 210 points for a free movie ticket.

So, The inequality can be written as :

reward points + 11.5 points per visit ≥ 210

          80 + 11.5 v ≥ 210

or, 210 ≤  80 + 11.5 v

So, The correct option is (b).

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Answer:

Step-by-step explanation:

We can use the Pythagorean theorem to find the distance from second base to home plate, which is the diagonal of a right triangle with legs of 60 feet each:

d = sqrt(60^2 + 60^2) = sqrt(7200) ≈ 84.85 feet

So the total distance that you ran is:

60 + 60 + 84.85 ≈ 204.9 feet

Rounded to the nearest tenth, the answer is:

204.9 feet ≈ 204.9 feet

The answer of the question based on monthly installment is Anver's monthly installment is R6 253.27.

What is Formula?

In mathematics,  formula is  set of symbols or expressions representing mathematical relationship or the rule. Formulas are often used to describe and solve the problems in mathematics, science, engineering, and other fields.

To determine the amount of the loan, we can calculate 85% of the price of the van, which is the amount that Anver would have to borrow after paying the 15% deposit:

Amount of loan = 85% of R392 900

= 0.85 x R392 900

= R333 965

To determine the monthly installment, we need to use the formula for the present value of an annuity:

PV = PMT x (1 - (1 + r/n)^(-nt)) / (r/n)

We can calculate the annual interest rate by adding 1% to the prime rate. According to the South African Reserve Bank, the prime rate in September 2013 was 9%.

Annual interest rate = prime rate + 1%

= 9% + 1%

= 10%

Therefore, we can substitute the given values into the formula:

PV = R333 965

r = 10% / 12 = 0.8333%

n = 12

t = 72 / 12 = 6

Rearranging the formula to solve for PMT, we get:

PMT = PV x (r/n) / (1 - (1 + r/n)^(-nt))

Substituting the values, we get:

PMT = R6 253.27 (rounded to two decimal places)

Therefore, Anver's monthly installment is R6 253.27.

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Answer:

DG = 12 , GC = 24

Step-by-step explanation:

DC is a median of Δ ABC

on each median the distance from the vertex to the centroid is twice as long as the distance from the centroid to the midpoint, that is

GC = 2 DG , then

DG + GC = DC , that is

DG + 2 DG = 36

3 DG = 36 ( divide both sides by 3 )

DG = 12

thus

DG = 12 and GC = 2 × 12 = 24

Solution is in the attachment!! :)

The relation given is a function since each of the input value only maps to a single output value.

A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.

Given are set of coordinate values of a relation.

We have to determine whether the relation is function or not.

The points are,

{(-3, -8), (3, 6), (5, -5), (7,-6), (10, 6)}

Domain of the relation are {-3, 3, 5, 7, 10}

Range of the relation are {-8, 6, -5, -6, 6}

We can see that each of the input value only maps to a single output value.

So the relation is a function.

Hence the relation is a function.

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To solve this division problem, we can use the rule "division is the same as multiplication by the reciprocal".

So, 1/2 ÷ 7 is the same as 1/2 x 1/7.

Multiplying the numerators and denominators, we get:

1/2 x 1/7 = 1/14

Therefore, 1/2 divided by 7 is equal to 1/14.

Answer: 1/14

Step-by-step explanation:

To solve 1/2 divided by 7, you would first make 7 a fraction as well, which is 7/1. Then you do the inverse operation and fraction which is multiplying. So now, the question is 1/2 multiplied by 1/7. That equals 1/14

[tex]~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$900\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ t=years\dotfill &10 \end{cases} \\\\\\ A = 900[1+(0.03)(10)] \implies A = 1170~\hfill \stackrel{ \textit{it grew by} }{\text{\LARGE 270}}[/tex]

If the container is closed rectangular it has six faces - a top, a bottom, and four rectangular sides. If the container has an opening, it has five faces - a top, a bottom, and four rectangular sides.

The number of faces of any geometry can vary depending on its specific shape and design. In geometry, a face is a flat surface that forms part of the boundary of a solid object.

For example, a cube has six faces, a rectangular prism has six faces, and a sphere has no faces (because it is a curved surface with no edges or corners).

The number of faces in a container can vary depending on its shape and whether it has any openings. Here are some common types of containers and the number of faces they have:

Rectangular container: If the container is completely closed, it has six faces - a top, a bottom, and four rectangular sides. If the container has an opening, it has five faces - a top, a bottom, and four rectangular sides.

Circular container: If the container is completely closed, it has two faces - a top and a bottom. If the container has an opening, it has three faces - a top, a bottom, and a curved side.

Cylindrical container: If the container is completely closed, it has three faces - a top, a bottom, and a curved side. If the container has an opening, it has four faces - a top, a bottom, a curved side, and an additional flat side where the opening is located.

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Answer:

Step-by-step explanation:

Therefore, the likelihood of a thunderstorm is roughly 0.2174, or a 21.74% chance that one will occur.

The study of random events or phenomena falls under the category of probability, which is a branch of mathematics. It is a way to quantify the possibility or likelihood of an event happening. A number between 0 and 1, where 0 denotes an improbable occurrence and 1 denotes a certain event, is used to express probability. By dividing the number of favorable outcomes by the total number of possible outcomes, one can determine the probability of an occurrence. In many disciplines, including statistics, economics, engineering, and science, probability is used to make predictions and well-informed choices in uncertain situations.

given

We must divide the amount of beneficial outcomes (chances of a thunderstorm) by the total number of possible outcomes in order to express the suggested degree of likelihood as a probability value between 0 and 1 inclusive.

When the likelihood of a thunderstorm is stated as "5 in 23," it indicates that out of a possible 23, 5 outcomes are likely to be favorable.

Therefore, the likelihood of a rainstorm is:

P (thunderstorm) is the ratio of the number of successful outcomes to all other possible outcomes.

Thunderstorm P(thunder) = 5 / 23

As a result, the probability value for the indicated degree of likelihood can be expressed as:

P(thunderstorm)= 5/230.2174

Therefore, the likelihood of a thunderstorm is roughly 0.2174, or a 21.74% chance that one will occur.

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The equations of the relationship are

A: y = 1/4x

B: y = 2/5x

From the question, we have the following parameters that can be used in our computation:

The graph

We can see that the lines pass through the origin

This means that the equations can be represented as

y = mx

Where

m = slope

From the graph. we have

A = (8, 2)

B = (5, 2)

When these points are substituted, we have

A: 8m = 2

B: 5m = 2

When solved, we have

A: m = 1/4

B: m = 2/5

So, the equations are

A: y = 1/4x

B: y = 2/5x

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Answer:60

Step-by-step explanation:

100- 25= 75

75/1.25=60

Answer:

Step-by-step explanation:

he recives 8.52

Answer: $8.52

Step-by-step explanation:

First, you have to calculate how much Tommy spent, which is shown below:

2 x 3.99 = 7.98

7.98 + 3.5 = 11.48

Now that we know Tommy spent 11.48, we just subtract that from 20

$20.00 - $11.48 = $8.52

Answer:

Lamar claims that the weight of her cat is "almost 11 pounds".

Since Lamar is using the word "almost", we can assume that she means the weight of her cat is very close to 11 pounds, but not exactly 11 pounds.

Therefore, we can represent Lamar's claim with the inequality:

B) w < 11

This is because if the weight of Lamar's cat is almost 11 pounds, but not exactly 11 pounds, then the weight must be less than 11 pounds.

The area of the image of the triangle under T is 5/9.

What is Triangle?

In geometry, a triangle is a closed two-dimensional shape with three straight sides and three angles. It is one of the basic shapes in geometry and is characterized by its three vertices (points where two sides intersect) and three sides (line segments that connect the vertices). The sum of the interior angles of a triangle is always 180 degrees, and the length of each side is less than the sum of the lengths of the other two sides.

To show that T maps the given triangle to the domain D, we need to find the image of the three vertices of the triangle under T and then show that the image lies inside D.

Let's first consider the vertex (0,0) of the triangle. Applying T, we get T(0,0) = (0,0). So the image of the vertex (0,0) is the origin, which clearly lies inside D.

Now let's consider the vertex (1,1) of the triangle. Applying T, we get T(1,1) = (0,2), which lies on the y-axis and satisfies y²=4-4x, so it lies inside D.

Finally, let's consider the vertex (u,0) of the triangle, where 0≤u≤1. Applying T, we get T(u,0) = (u²,0). This lies on the x-axis and satisfies y²=4-4x only when x=1, which is outside D. Therefore, the image of this vertex is not inside D.

Hence, we can conclude that T maps the triangle to the domain D, except for the line segment {(u,0):0≤u≤1}.

To evaluate the area of the image, we can use the fact that the area of the image of a region under a transformation is equal to the absolute value of the determinant of the Jacobian matrix of the transformation, multiplied by the area of the original region.

The Jacobian matrix of T is given by

J(T) = [2u -2v]

[2v 2u]

The absolute value of the determinant of this matrix is 4u² + 4v², so the area of the image of the triangle is

∫∫R 4u²+4v² dA,

where R is the region in the uv-plane corresponding to the triangle.

Integrating over R, we get

∫0 ∫v 4u²+4v² dudv

= ∫0 (4/3) (1-v³+3v²) dv

= (4/3) (1/4 - 1/16 + 1/3 - 1/12)

= 5/9.

Therefore, the area of the image of the triangle under T is 5/9.

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(Total saplings- Saplings with a height greater than 27 1/4 inches) = Number of saplings with a height of 27 1/4 inches or less.

To find the height of an object in mathematics, you must first identify the shape of the object. Then, use the relevant formula for the shape to calculate the height. For example, if the object is a right triangle, the height can be found by using the Pythagorean Theorem. Additionally, if the object is a rectangle, you can use the formula for the area of a rectangle to calculate the height. Finally, if the object is a circle, you can use the formula for the circumference of a circle to find the height.

To solve this question, we will use the numerical approach. First, we need to subtract the number of saplings with a height greater than 27 1/4 inches from the total number of saplings. Then, we subtract the result from the total number of saplings. The result will be the number of saplings with a height of 27 1/4 inches or less.

Therefore, the equation is (Total saplings- Saplings with a height greater than 27 1/4 inches) = Number of saplings with a height of 27 1/4 inches or less.

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There are 3.79 litres in 4 quarts.

Unit conversion is the conversion between different units and measurements of the same quantity through a process of multiplication or division. In mathematics, conversion is the process of changing values ​​in one form to another form like Inches to millimeters or liters to gallons.

Given in the table

1 quart = 0.9464 liter

4 quarts = 4 × 0.9464 litre

4 quarts = 3.7856 litres

hundredths means 2 digit right to the decimal point

3.7856 litres rounded to nearest hundredths

= 3.79 litres

Hence, 3.79 litres are there in 4 quarts.

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Answer:

26

Step-by-step explanation:

[tex] \sqrt{ {24}^{2} + {10}^{2} } = 26[/tex]

Answer:

----------------------------

Given is the right triangle with legs of 24 and 10.

Find the hypotenuse using Pythagorean theorem: