Lauri spent ​5% of x hours at her​ part-time job. What is x if ​5% of x is about 10 hours? Explain how you estimated and which property of equality you used to find x.

Answer:

170.16 ft

Step-by-step explanation:

tan10° = 30/x

x = 30x/ tan 10° = 30/0.1763

=170.16 ft

The area of the semicircle that has a radius of 3 kilometers is calculated as: 14.13 square kilometers.

To find the area of a semicircle, you can follow these steps:

The semicircle's area = 1/2(πr²) = 1/2 * (3.14 * 3²)

= 14.13 square kilometers.

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The equation of the line made by the rice flour joining the remaining two opposite banana plants is y = 2x - 7.

We are given the coordinates of two opposite banana plants, (3, 4) and (7, 2). Since the consecutive plants are fixed at equal distances, the other two plants will lie on the perpendicular bisector of the line segment joining (3, 4) and (7, 2).

First, let's find the midpoint of the line segment joining (3, 4) and (7, 2):

Midpoint = ((x1 + x2)/2, (y1 + y2)/2) = ((3 + 7)/2, (4 + 2)/2) = (5, 3)

Find the slope of the line segment joining (3, 4) and (7, 2):

Slope = (y2 - y1)/(x2 - x1) = (2 - 4)/(7 - 3) = -2/4 = -1/2

Now, we can use the point-slope form of a linear equation to find the equation of the line made by the rice flour joining the remaining two opposite banana plants:

y - y1 = m(x - x1)

Here, m is the slope, and (x1, y1) is the midpoint (5, 3):

y - 3 = 2(x - 5)

y - 3 = 2x - 10

y = 2x - 7

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The probability that a randomly selected athlete uses a stair climber for,

(a) P(X < 18) = 0.2514

(b) P(22 < X < 31) = 0.4332

(c) P(X > 30) = 0.0918

Let X be the amount of time an athlete uses a stair climber. Then, X ~ N(22, 6^2) represents a normal distribution with mean 22 and standard deviation 6.

(a) To find the probability that a randomly selected athlete uses a stair climber for less than 18 minutes, we need to calculate P(X < 18).

Z-score for 18 minutes = (18 - 22) / 6 = -0.67

Using a standard normal table or calculator, we find that P(Z < -0.67) = 0.2514.

Therefore, P(X < 18) = P(Z < -0.67) = 0.2514.

(b) To find the probability that a randomly selected athlete uses a stair climber for between 22 and 31 minutes, we need to calculate P(22 < X < 31).

Z-score for 22 minutes = (22 - 22) / 6 = 0

Z-score for 31 minutes = (31 - 22) / 6 = 1.5

Using a standard normal table or calculator, we find that P(0 < Z < 1.5) = 0.4332.

Therefore, P(22 < X < 31) = P(0 < Z < 1.5) = 0.4332.

(c) To find the probability that a randomly selected athlete uses a stair climber for more than 30 minutes, we need to calculate P(X > 30).

Z-score for 30 minutes = (30 - 22) / 6 = 1.33

Using a standard normal table or calculator, we find that P(Z > 1.33) = 0.0918.

Therefore, P(X > 30) = P(Z > 1.33) = 0.0918.

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It will take them to meet this goal 10.01 years (or approximately 10 years and 1 month)

To solve this problem, we'll need to use a formula:

Simple interest = Principal × rate × time (in years)

We can rearrange the formula as follows:

Time (in years) = Simple interest / (Principal × rate)

As per the formula, to calculate the time it will take the family to earn the interest, we'll need to know the principal and the rate. These values are not given in the question, so we'll assume that the principal is $10,000 and the interest rate is 7.5 percent (or 0.075 as a decimal).

Simple interest = Principal × rate × time (in years)

$7,507.50 = $10,000 × 0.075 × time (in years)

Divide both sides by $10,000 × 0.075 to isolate the time (in years):

time (in years) = $7,507.50 / ($10,000 × 0.075)

time (in years) = 10.01 years

So, it will take the family 10.01 years (or approximately 10 years and 1 month) to earn $7,507.50 in interest in account 2.

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To maximize the revenue, the bookstore should charge $13 for the book.

Given:

p = book's price in dollars,   where

p is less than or equal to 26.

number of books sold per month = 130-5p

Price that maximizes revenue = ?

Revenue = Price × QuantityofUnitsSold

Revenue = p(130-5p)

Revenue = [tex]130p - 5p^2[/tex] , This is quadratic equation so, The vertex of the parabola, which gives the price that maximizes revenue, can be determined by calculating the value of x-coordinate of the vertex.

Let x = p

The formula for the x-coordinate of the vertex is [tex]-b/2a[/tex]

where,

a = -5

b = 130

c = 0

x = [tex]-b/2a=-130/-10 = 13[/tex]

So, to maximize the revenue, the bookstore should charge $13 for the book.

Maximum revenue will be:-

Revenue = Price × QuantityofUnitsSold

Revenue = p(130-5p)

where p = 13

Revenue = (13)(130-5(13))

Revenue = $845

The maximum revenue at (price = 13) will be $845.

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Answer:

-18x + 54y + 60

Step-by-step explanation:

you get this answer by distributing the -6 to all 3 properties.

-6 x 3x = -18x

-6 x -9y = 54y

-6 x -10 = 60

Answer:

a. 250,000

b. 450,000

Step-by-step explanation:

The polynomial function of least degree possible using the given information is: f(x) = -7/3 (x+1)(x-1)(x-3)

What is polynomial function?

A polynomial function is a type of mathematical function that consists of one or more terms, each of which is a constant multiplied by a variable raised to a non-negative integer power.

To construct a polynomial function of least degree possible using the given information, we need to use the fact that the function has real roots at -1, 1, and 3. This means that the function can be factored as follows:

f(x) = a(x+1)(x-1)(x-3)

where a is a constant coefficient that we need to determine.

Next, we need to use the fact that the function passes through the point (2, 7) to determine the value of a. We substitute x=2 and f(x)=7 into the above equation and solve for a:

7 = a(2+1)(2-1)(2-3)

7 = -3a

a = -7/3

Therefore, the polynomial function of least degree possible using the given information is:

f(x) = -7/3 (x+1)(x-1)(x-3)

Note that this function has real roots at -1, 1, and 3, and passes through the point (2, 7).

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In the given proof the blanks are ΔAED ≅ ΔABC using the AA criteria.

Every component of the set is connected to itself, according to the reflexive feature of sets. The reflexive property of congruence is known when the relation specified on a set is congruence, and the reflexive property of equality is known when the relation defined on a set of numbers is equality. When this occurs, the relation can be referred to as a reflexive relation or as a reflexive property being satisfied on that set. In the parts that follow, let's learn more about equality and congruence's reflexive attribute.

Given that angle A is congruent to angle A using the reflexive property.

Thus, ΔAED ≅ ΔABC using the AA criteria.

Hence, in the given proof the blanks are ΔAED ≅ ΔABC using the AA criteria.

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the correct answer is a. SAS congruency theorem can be used to prove that ABD =DCA.

In this question we accept two angles is given that is:

two triangles ∠ABD and

In this, an angle is common that is,

AD = AD

AB = CD

∠A is equal = ∠A (which is given)

That is the reason the SAS rule is right.

SSS is a geometric term that stands for "side-side-side." It refers to a congruence condition in which three sides of one triangle are equal to three corresponding sides of another triangle, making the two triangles congruent. Congruent triangles have the same size and shape, so if two triangles are congruent, all corresponding angles and sides are equal.

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the complete question is:

Which congruency theorem can be used to prove

that ABD =DCA?

a. SAS

b. Not enough information

c. SSS

d. AAS

The values of the inequalities are -5 ≤ x ≤ 1 and 2/3 ≤ x ≤ 1

What are inequalities?

An inequality is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made.

Here, we have

Inequality 1: f(4x - 3) ≥ f(2 - x²), Df = (-8 , 4)

The function increases at (-8,4).

So, we have:

4x - 3 ≥ 2 - x²

Rewrite as:

x² + 4x - 2 - 3 ≥ 0

Evaluate the like terms

x² + 4x - 5 ≥ 0

Expand

x² + 5x - x - 5 ≥ 0

Factorize the expression

x(x + 5) - 1(x + 5) ≥ 0

Factor out x + 5

(x - 1)(x + 5) ≥ 0

Solve for x

x ≥ 1 or x ≥ -5

Rewrite as:

-5 ≤ x ≤ 1

Inequality 2: g(3x² - 2x) ≥ g(3x - 2), Dg = all real numbers

g(3x² - 2x) ≥ g(3x - 2)

(3x² - 2x) ≥ (3x - 2)

Evaluate the like terms

3x² - 2x -3x + 2 ≤ 0

3x² - 5x + 2 ≤ 0

3x² - 3x -2x + 2 ≤ 0

3x(x-1) -2(x-1) ≤ 0

Solve for x

x≤1 or x≤2/3

Hence, the values of the inequalities are -5 ≤ x ≤ 1 and 2/3 ≤ x ≤ 1

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Any number that is strictly greater than 11/16 and strictly less than 15/16 belongs to this interval.

In mathematics, inequalities are statements that cοmpare twο values and indicate whether οne value is greater than, less than, οr equal tο the οther value.

Tο find the numbers that are greater than 11/16 and less than 15/16, we need tο cοnsider all numbers between these twο values, excluding the endpοints. That is,

11/16 < x < 15/16

where x represents the number we are looking for. We can also write this using interval notation as:

(11/16, 15/16)

Hence, any number that is strictly greater than 11/16 and strictly less than 15/16 belongs to this interval.

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Answer:

that question is incomplete

The surface area of a cylinder is given by the formula:

A = 2πrh + 2π[tex]r^{2}[/tex]= 2*3.14*4.8*19.1= 575.504 square ft.

Surface area is the measure of the total area that the surface of an object occupies. It is the sum of all the areas of the individual faces or surfaces of the object. For example, if you have a cube, the surface area would be the sum of the areas of all six faces of the cube. The surface area is usually measured in square units, such as square meters, square centimeters, or square feet, depending on the system of measurement used. Surface area is an important concept in many fields of study, including mathematics, physics, chemistry, and engineering.

by the question.

The surfaces area of a cylinder is given by the formula:

[tex]A = 2πrh + 2πr^2[/tex]

where r is the radius of the circular base of the cylinder, and h is the height of the cylinder.

If a=9.6ft and b=19.1ft, we need to determine the values of r and h before we can calculate the surface area.

Since the cylinder has a circular base, we know that the diameter of the base is equal to b, or 19.1ft. Therefore, the radius of the base is half the diameter, or:

r = b/2 = 19.1/2 = 9.55ft

we know that the radius of the cylinder is = diameter/2

= 9.6/2

= 4.8

The surfaces area of a cylinder= [tex]A = 2πrh + 2πr^2[/tex]

A = 2πrh + 2π[tex]r^{2}[/tex]= 2*3.14*4.8*19.1= 575.504 square ft.

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Answer:

x = 7

Step-by-step explanation:

In a trapezoid

each lower base angle is supplementary to the upper base angle on the same side , then

∠ S + ∠ V = 180

8x - 21 + 145 = 180

8x + 124 = 180 ( subtract 124 from both sides )

8x = 56 ( divide both sides by 8 )

x = 7

Answer:

First, we need to find the area of one block:

Area of one block = length x width = (1/10) mile x (1/10) mile = 1/100 square mile

Since there are 500 blocks in the town, the total area of the town is:

Total area of town = 500 blocks x (1/100) square mile/block = 5 square miles

To find the population density, we divide the population by the total area:

Population density = population / total area

Population density = 80,250 / 5 = 16,050 people per square mile

Therefore, the population density of the town is 16,050 people per square mile.

The required area and the circumference of the given circle are 19.63 ft² and 15.70 ft respectively.

Simply put, a circle is a rounded shape without any edges or line segments. It has the geometric shape of a closed curve.

The points of the circle are at a fixed distance from the center.

A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called the “center”.

So, the area would be:

= πr²

= 3.14*2.5*2.5

= 19.63495

= 19.63 ft²

The circumference would be:

= 2πr

= 2*3.14*2.5

= 15.70796

= 15.70 ft

Therefore, the required area and the circumference of the given circle are 19.63 ft² and 15.70 ft respectively.

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A. The mean age of the team rounded to 1 decimal place is 20.9 years

B. The age of the new player is 23.1 years

The mean age of the team can be obtained as illustrated below:

Mean age = ∑fx / ∑f

Mean age = [(19 × 2) + (20 × 3) + (21 × 1) + (22 × 4) + (23 × 1)] / (2 + 3 + 1 + 4 + 1)

Mean age = 230 / 11

Mean age = 20.9 years

Thus, the mean age of the team is 20.9 years

The age of the new player can be obtained as follow:

New mean = (mean of previous + age of new player) / 2

22 = (20.9 + age of new player) / 2

Cross multiply

22 × 2 = 20.9 + age of new player

44 = 20.9 + age of new player

Collect like terms

44 - 20.9 = Age of new player

Age of new player = 23.1 years

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Complete question:

Pleas attached photo

The number of students who do not like both games is 3

John Venn popularized the Venn diagram in the 1880s, which is a type of diagram that displays the logical relationship between sets. The illustrations are used in probability, logic, statistics, linguistics, and computer science to demonstrate basic set relationships and to teach rudimentary set theory.

Students who like only volleyball=17-10=7

Students who like only basketball=15-10=5

Students who like both sports =10

Students who like one or more sports =7+5+10=22

Students who do not like any sport =25-22=3

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In a class of 25 students, 17 like volleyball, 15 like basketball and 10 like both games. Find the number of students who don't like any of the games.

Answer:

18%

Step-by-step explanation:

first you divide 97,200 from 540,000= 0.18 x 100=18%

Answer:

2

Step-by-step explanation:

Both 8 and 1/32 are powers of 2.

2³ is 8, since 2*2*2=8.

2^-5 is 1/32.

2^5 is 2*2*2*2*2, and the negative sign in front of the 5 flips the answer to be 1/32

the area of the equilateral triangle with a side length of 15 is approximately 97.4279 square units.

A regular triangle is also known as an equilateral triangle, which means all of its sides are equal in length. To find the area of an equilateral triangle with a side length of 15, we can use the following formula:

Area = (√(3) / 4) × side²

where "side" is the length of one side of the triangle.

Let's plug in the given value of side length, which is 15, into the formula:

Area = (√(3) / 4) × 15²

Area = (√(3) / 4) × 225

Area = 97.4279 (rounded to 4 decimal places)

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Therefore, when y = 10 and z = 5, the value of the expression 0.3y + y/z is 5.

In mathematics, an expression is a combination of numbers, variables, and operators that are grouped together to represent a mathematical quantity or relationship. Expressions can be simple, such as a single number or variable, or they can be more complex, involving multiple operations and variables. Expressions are often used in mathematics to represent relationships between variables, to evaluate quantities, and to solve equations.

Here,

Substituting y = 10 and z = 5 in the given expression, we get:

0.3y + y/z = 0.3(10) + 10/5

= 3 + 2

= 5

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Answer:3.14sq^2

Step-by-step explanation:b x c x a = 3.14

Answer:

Step-by-step explanation:

10 percent of 3000 = 300

3000+300=3300

3300+300=3600

3600+300=3900

interest = 3900-3000

= R900

he will pay R900 interest over 3 years.

i think this is the answer.

mean price for a theatre ticket in New York is $ 50.299

Mean can be expressed as the total sum of observations for the total number of observations.

In other words its the sum by the count

It gives the average measure of each entity.

The mean Price is sometimes called Average Price.

Total number of Tickets = 11.7 million

Total Cost = $588.5 million

Mean Price = Total Cost / Total Number of Tickets

= 588.5 million / 11.7 million

= $ 50.299

mean price for a theatre ticket in New York is $ 50.299

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Ms. Maynard grates 23/30 of a block of cheese, leaving the fraction of 7/30 of the cheese. Mr. Connor then eats 3/30 of the cheese, leaving the fraction of 4/30 of the cheese remaining.

Let us suppose the total block of cheese as 1.

If Ms. Maynard grates 23/30 of a block of cheese, then the fraction of cheese left is:

Remaining cheese = 1 - 23/30 = 7/30

After Mr. Connor eats 3/30 of the cheese, the fraction of cheese left is:

Remaining cheese = 7/30 - 3/30 = 4/30

Therefore, 4/30 of the cheese is left over after grating by  Ms. Maynard and  Mr. Connor respectively.

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Answer:

The equation X = √(-X + 6) can be solved using algebraic manipulation. Here are the steps:

Square both sides of the equation to eliminate the square root:

X^2 = -X + 6

Add X to both sides of the equation:

X^2 + X = 6

Rearrange the equation in standard quadratic form:

X^2 + X - 6 = 0

Factor the quadratic equation:

(X + 3)(X - 2) = 0

Use the zero product property to solve for X:

X + 3 = 0 or X - 2 = 0

X = -3 or X = 2

Step-by-step explanation:

Answer:

(5, 13)

Step-by-step explanation:

Points (4, 8)

Translation right 1 unit. Meaning x + 1

(4, 8) → (5, 8)

Up 5 units. Meaning y + 5

(5, 8) → (5, 13)

So, the final point at (5, 13)