find 45% of 170
give simple working out :0

Answer:

x = 2

Step-by-step explanation:

- 3x + 7 = 2x - 3 ( subtract 2x from both sides )

- 5x + 7 = - 3 ( subtract 7 from both sides )

- 5x = - 10 ( divide both sides by - 5 )

x = 2

Answer:

527.79

2πrh+2πr

2π 7• 5+2π7

The solution to the inequality is x > 1

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

3x - 1 > 2

Subtract -1 from both sides of the expression

So, we have

3x > 3

Divide both sides by 3

This gives

x > 1

Hence, the solution is x > 1

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The price per book is $3.50, the knitting needle is $3.20, the yarn is  $3.20 and the total spent is $63.70. Then, the number of members present there are 7 members.

An equation is a formula that connects two expressions with an equal sign and expresses their equivalence.

Given the price of the book is $3.50. The price of a knitting needle is $3.20. And, the price of the yarn is $5.40. The total amount spent by the member is $63.70.

Let us consider the number of members as x. The given situation is written in an equation as,

[tex]\begin{aligned} 3.50 + 3.20x + 5.40x &= 63.70\\8.60x& = 63.70 - 3.50\\8.60x& = 60.20\\x &= \frac{60.20}{8.60}\\x &= 7\end{aligned}[/tex]

The required answer is 7.

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The expression for the probability density function of the Weibull distribution will be: f(x) = k * x^(k-1) * e^(-x^k)

The expression for the probability density function (pdf) of a Weibull distribution is given by:

f(x) = k * x^(k-1) * e^(-x^k)

where:

x is the random variable

k is the shape parameter, which determines the shape of the distribution

e is the base of the natural logarithm

The shape parameter can take on any positive value, and the distribution is typically characterized by a shape that is either increasing or decreasing, depending on the value of k.

If the value of the k is less than 1, the distribution has a decreasing hazard rate, indicating that the failure rate decreases over time.

If the value of the k is greater than 1, the distribution has an increasing hazard rate, indicating that the failure rate increases over time.

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The interpretation is that 18% of the variation in the dependent variable can be explained by the variation in the independent variable.

Coefficient of determination R²

The percentage of variance in the dependent variable that is explained by the independent variable is shown by the coefficient of determination.  R² value is always in the range between 0 and 1. As opposed to 1, which shows that the independent variable fully explains the variation in the dependent variable, 0 means that the independent variable is utterly ineffective at predicting the variance in the dependent variable. It is stated as a percentage.

Interpretation of

R²=0.18

Since

R² is expressed in percentage terms,

R²=0.18

=18/100

=18%

Accordingly, the variation in the independent variable can account for 18% of the variation in the dependent variable. 82% of the variance is unaccounted for and cannot be attributed to the independent variable.

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The full question would be

How do you interpret a coefficient of determination, r 2, equal to 0.18 A? The interpretation is

The temperature during the afternoon in Chicago is 2°F

What is meant by the temperature of a place?

The average air temperature throughout a specific time period, typically a day, a month, or a year, as measured by a thermometer that has been properly exposed determines the temperature of a place.

Given,

 The overnight temperature in Chicago =  -7°F

The temperature that had risen during the afternoon = 9°F

From this data, we can see that there is no temperature change during the morning in Chicago.

That means the temperature remained constant throughout the night till the next morning.

Therefore the temperature during the afternoon in Chicago = -7+9 = 2°F.

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Answer:

The actual dimensions of the kitchen are  12 feet by 14  feet

Step-by-step explanation:

The kitchen's real measurements are 12 feet by 14 feet.

Detailed explanation:

4 / 0.8 = 5, 7 / 1.4 = 5. The actual drawing ratio is a 5:1 ratio.

Consequently, 2.4 inches multiplied by 5 is 12 feet and 2.8 inches multiplied by 5 equals 14 feet.

12 ft. x 14 ft.

Find the scale of the drawing

[tex]\frac{0.8}{4} \frac{in}{ft.} = \frac{1.4}{7} = 0.2 \frac{in}{ft.}[/tex]

To determine the precise dimensions subtract 0.2 from the measurements on the scale illustration to get 12 feet (2.4/0.2).

2.8/0.2 = 14 ft

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The conversions are 0.261 kg, 300000 seconds, 947.4 cm and 730 L.

a. 261 g to kg

For converting grams to kg, we divide by 1000.

(261 / 1000)= 0.261 kg

The number of significant figures in 261 g is 3 and the number of significant figures in the answer 0.261 kg is also 3.

b. 3 days to seconds

1 day = 24 hours, 1 hour = 60 minutes, 1 minute = 60 seconds

1 day = 24 x 60 x 60 seconds

Therefore, 3 days = 3 x 24 x 60 x 60 seconds = 2, 59, 200 seconds

Since, the number of significant figures in 3 days is 1, hence we write 2, 59, 200 as 300000 seconds, such that it has 1 significant figure.

c. 9, 474 mm  to cm

For converting mm to cm, we divide by 10

(9474 / 10) = 947.4 cm

The number of significant figures in 9, 474 mm is 4 and the number of significant figures in the answer 947.4 cm is also 4.

d. 0.73 KL to L

1 KL = 1000 L

0.73 KL = 0.73 X 1000 L = 730 L

The number of significant figures in 0.73 KL is 2 and the number of significant figures in the answer 730 L is also 2.

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An algorithm to find the substring from the given string that is the same when read forwards and backwards in python language.

Here's a basic algorithm in Python to find the longest palindromic substring:

def longest_palindromic_substring(input_str):

   n = len(input_str)

   if n == 0:

       return ""

   dp = [[False for _ in range(n)] for _ in range(n)]

   longest_len = 1

   longest_start = 0

   for i in range(n):

       dp[i][i] = True

   for start_idx in range(n - 1, -1, -1):

       for end_idx in range(start_idx + 1, n):

           if input_str[start_idx] == input_str[end_idx]:

               if end_idx - start_idx == 1 or dp[start_idx + 1][end_idx - 1]:

                   dp[start_idx][end_idx] = True

                   if end_idx - start_idx + 1 > longest_len:

                       longest_len = end_idx - start_idx + 1

                       longest_start = start_idx

   return input_str[longest_start : longest_start + longest_len]

The above algorithm uses dynamic programming to solve the problem in O(n^2) time complexity, where n is the length of the input string.

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Ayana's sandcastle is 1/8 foot taller than her sister's.

Fractions in Math, represent a numerical value that expresses a part of a whole. The whole can be any number, specific value, or a thing.

Given,

Ayana's sandcastle was 1/2 of a foot tall

Her sister's was 3/8 of a foot tall.

Difference between the height of the both sandcastle

= 1/2 - 3/8

= (4 - 3)/8

= 1/8

Hence, Ayana's sandcastle is taller than her sister's by 1/8 foot.

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Maximum number of voters support renovation project is 44082.

Margin of error provides a clearer understanding of what a survey’s estimate of a population characteristic means.  it’s expressed with a plus and minus sign together, e.g. + or -1%.

A recent survey of 250 citizens showed that 56% favored a renovation project for the local library.

The survey had a margin of error of ±1.9%.

Total number of voters in the town = 78,717

56% of 78717= 44081.52 ⇒44082(rounded to nearest whole number)

Hence, maximum number of voters support renovation project is 44082.

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The number of people took more than 25 minutes to finish a crossword is 9.

A stem and leaf plot also called a stem and leaf diagram is a way of organizing data into a form that makes it easy to observe the frequency of different types of values. It is a graph that shows numerical data arranged in order. Each data value is broken into a stem and a leaf.

A stem and leaf plot is represented in form of a special table where each first digit or digit of data value is split into a stem and the last digit of data in a leaf.

From the given stem and leaf plot, we have

10, 11, 14, 24, 25, 26, 27, 28, 34, 34, 40, 42, 45 and 47

So, the number of people took more than 25 minutes is 9.

Therefore, the number of people took more than 25 minutes to finish a crossword is 9.

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The angle of depression from the top of the cliff to the edge of the water

is 54.46°.

Trigonometric functions, often known as circular functions, are, in a nutshell, the functions of the angle of a triangle. This indicates that the relationship between a triangle's angles and sides is provided by these trig functions. The basic trigonometric functions are sine, cosine, tangent, cotangent, secant, and cosecant.

Given the height of the cliff = 70 feet,

the lake water reaches 50 ft away from the cliff.

distance from the base of the cliff to lake water = 50 feet

the angle of depression is found by tanФ

where Ф = angle of depression

tanФ = perpendicular/base

perpendicular = height = 70 feet

base= 50 feet

tanФ = 70/50

Ф = tan⁻¹(1.4)

Ф = 54.46°

Hence angle of depression is 54.46°.

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The scalars 0 and any scalar with magnitude 0 satisfy the equation 4(2−5)(4,4) = 0 for every pair of vectors (4,4).

Vectors are mathematical objects that have both magnitude and direction. They can be multiplied by scalars, which are non-zero real numbers.

In this case, we are looking for non-zero scalars that satisfy the equation 4(2−5)(4,4)=0 for every pair of vectors (4,4).

To begin, we simplify the equation.

The expression 2−5 equals to -3, so

=> 4(-3)(4,4) = 4(-12,-12).

Next, we multiply 4 by -12 to get -48. The expression

=> 4(-12,-12) = (-48,-48).

Now, we need to find non-zero scalars that multiply (-48,-48) to give us a zero vector, which is a vector with magnitude of 0 and direction undefined.

Any scalar that satisfies this condition is a solution. For example, the scalar 0 satisfies this condition because

=> 0 * (-48,-48) = (0,0).

Additionally, any scalar with magnitude 0 will also satisfy this condition because the product of a vector and a scalar with magnitude 0 is always the zero vector.

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The slopes of perpendicular lines are opposite reciprocals and hence option D is correct

The slope of the given line is 3/8, so its opposite reciprocal is -8/3. From the options we have to find a line with this slope.

In the given line, it was easy to find the slope because the equation is in slope-intercept form, but in the options the equations are in standard form,

If we solve this for y we get the slope-intercept form,

Thus the slope of a line whose equation is in standard form is,

• Option A: a = 3, b = 8. The slope is -3/8 → ,not perpendicular

• Option B: a = 3, b = -8. The slope is 3/8 → ,not perpendicular

• Option C: a = -8, b = 3. The slope is 8/3 → ,not perpendicular

• Option D,: a = 8, b = 3. The slope is -8/3 → ,this line is perpendicular, to the given line

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Answer:

Step-by-step explanation:

You would need 100 ounces of apples to get 100% of your daily vitamin C.

We know that 8 ounces of apples contains 8% of your daily vitamin C.

To find out how many ounces of apples are needed to get 100% of your daily vitamin C, we can use the following proportion:

(8 ounces / 8%) = (x ounces / 100%)

where x represents the number of ounces needed for 100% of the daily vitamin C.

To solve for x, we can cross-multiply and divide:

8 ounces * 100% = 8% * x ounces

8 ounces * 100 = 8 * x ounces

800 = 8x

x = 100

Therefore, you would need 100 ounces of apples to get 100% of your daily vitamin C.

Integers include zero, a positive natural number, and a negative integer represented by a minus sign, and the missing integers in the given situation are 5 < √48 < 7.

Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers.

The inverse additives of the equivalent positive numbers are the negative numbers.

The boldface Z is a common mathematical symbol for the set of integers.

An integer, pronounced "IN-tuh-jer," is a whole number that can be positive, negative, or zero and is not a fraction.

Integer examples include -5, 1, 5, 8, 97, and 3,043. 1.43, 1 3/4, 3.14, and other numbers that are not integers are some examples.

So, we have:
__ < √48 < __

We know that:

√48 = 6.92

Then,

5 < √48 < 7

Therefore, integers include zero, a positive natural number, and a negative integer represented by a minus sign, and the missing integers in the given situation are 5 < √48 < 7.

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Complete question:

Use the integers that are closest to the number in the middle.

__ < √48 < __.

Answer: 264

Step-by-step explanation:

calculated each area, shown in the picture above

The current age of the artifact is 1600 years

Let's call the current age of the artifact "a" and the current age of the book "b".

The artifact is four times as old as the book, so we have:

a = 4b

In 200 years, the artifact will be a + 200 and the book will be b + 200.

From the problem, we know that in 200 years:

a + 200 = 3 (b + 200)

Expanding the right side:

a + 200 = 3b + 600

Substituting a = 4b:

4b + 200 = 3b + 600

Solving for b:

b = 400

So the current age of the book is 400 years old.

Recall that

a = 4b

So, we have

a = 400 * 4 = 1600

And the current age of the artifact is 4 times that, or 1600 years old.

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Ten percent of the 30 team members which means that  [tex]$\dfrac{10}{100} \cdot 30 = 3$[/tex]  team members are new to the team. So, the answer is 6 new team members. Option D is correct.

To understand how we got the answer, we need to understand the concept of "percentage". The percentage is a way of showing a number as a fraction of 100. So, 10% means  [tex]$\dfrac{10}{100}$[/tex].

Now, if we multiply this fraction by the total no. of team members, we'll find the no. of new team members.

[tex]$\dfrac{10}{100} \cdot 30 = 3$[/tex]

So, 10% of the 30 team members are equal to 3 team members, and that's why the answer is D-6.

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The process of converting a hexadecimal value to octal involves two steps: first converting the hexadecimal value to binary, and then converting the binary value to octal.

Hexadecimal is a number system that uses 16 digits, from 0 to 9 and A to F, to represent values. It is commonly used in computer science, as it provides a concise representation of binary data.

To convert a hexadecimal value to an octal value, the hexadecimal number must first be converted to binary, and then the binary number must be converted to octal.

The octal number system uses 8 digits, 0 to 7, to represent values. To convert a binary number to octal, the binary number is split into groups of 3 bits each, starting from the rightmost bit.

The value of each group is then found by adding up the values of the bits that are turned on.

In this case, the unsigned hexadecimal value is given, and we need to find its unsigned octal equivalent.

To do this, we first convert the hexadecimal value to binary. We then group the binary digits into groups of 3 bits each and find the octal equivalent of each group.

The final answer is the concatenation of the octal values of each group, from left to right.

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Answer:

The rule for this geometric sequence is that the number is being halved each time. This can be expressed as a general rule as follows: an = a1 * (1/2)^n-1 , where a1 is the first term, n is the number of the term in the sequence, and an is the nth term. Therefore, the nth term of this sequence is an = 64 * (1/2)^n-1.

The percentage of companies that use video ads in the sample is the statistic.

Here, the concern is to estimate the percentage of companies that use video ads.

He took a sample of 125 companies to inquire whether or not they use video ads.

So, the percentage of companies that use video ads in the sample is the statistic.

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Answer:

To solve the inequality ≤ \frac{3}{8}, we need to find all the values of x that will make the inequality true. We can start by setting the inequality equal to zero and solving for x.

x ≤ \frac{3}{8}

To graph the solution on a number line, we can use an open circle at \frac{3}{8} to indicate that the value is not included in the solution. So the solution set is: (-∞,3/8)

To solve the inequality > -\frac{9}{5}, we need to find all the values of x that will make the inequality true. We can start by setting the inequality equal to zero and solving for x.

x > -\frac{9}{5}

To graph the solution on a number line, we can use an open circle at -\frac{9}{5} to indicate that the value is not included in the solution. So the solution set is: (-9/5, ∞)

Step-by-step explanation:

The volume of a triangular pyramid can be found using V = 1/3AH where A = area of the triangle base, and H = height of the pyramid or the distance from the pyramid's base to the apex.

A tetrahedron is a polyhedron in geometry that has four triangular faces, six straight edges, and four vertex corners. It is often referred to as a triangle pyramid. The simplest regular convex polyhedron is the tetrahedron. A triangle base, three triangular faces, and a common vertex make up the geometric shape known as a triangular pyramid.

The formula for calculating the volume of a triangular pyramid is Volume= 1/3 × Base area × Height. The dimensions required to find the surface area of a triangular pyramid are the side, height, and slant height.

Note that an overview was given as your information is incomplete.

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Answer:

375

Step-by-step explanation:

Formula+ Number x 100/percent= 345x100/92=375

Answer:220.5

Step-by-step explanation:

Do 315 - 30%

You saved $135 off the original price of the guitar. The original price is $450. The sale price is 30% off the original price.

Answer:

b+52<72

Step-by-step explanation:

The condition "y divide by 7 then add 2" can be represented as expression,    [tex]\frac{y}{7} +2[/tex]

An expression is a sentence with at least two numbers or variables having mathematical operation. Math operations can be addition, subtraction, multiplication, division.

For example, 2x+3

Given that,

A condition,

y divide by 7 then add 2

Here, we have to apply two operation to complete this expression,

1.  Division

2. Addition

First, doing division operation,

y divide by 7

⇒  y/7

Now, second operation which is addition of 2

⇒  [tex]\frac{y}{7} + 2[/tex]

Hence, the expression is   [tex]\frac{y}{7} + 2[/tex]

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