50 points! Multiple choice algebra question. Gilda used the formula f(x) = x/144 to convert square inches to square feet. Find the inverse of f(x). Photo attached. Thank you,

The probability that the mean tariff rate of 400 randomly selected​ railroad-car shipments of ethanol will be within ​$80 of the mean tariff rate of all​ railroad-car shipments of ethanol is: 0.305.

The interpretation of the statement that the probability of the sample mean being within $80 of the population mean is 0.305 is that if we take multiple samples of 400 ethanol railroad-car shipments, about 30.5% of the time, the sample mean tariff rate will be within $80 of the population mean tariff rate.

To arrive at the propability, we will first list the data as follows:

Standard deviation of tariff rates, σ = $1200

Sample size, n = 400

Margin of error, E = $80

Standard deviation of sample mean = σ/√n = 1200/√400 = 60

To find the probability, we need to calculate the z-score for the margin of error.

z = E / standard deviation of sample mean = 80 / 60 = 4/3.

When we use the standard normal distribution table, we will arrive at  the probability of a z-score between -1.33 and 1.33. This probability is approximately 0.305.

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The simplified form of the expression is 71/24.

To simplify the expression 4 - 1/3 - 7/8 + 1/6, we can follow the order of operations, which dictates that we perform multiplication and division before addition and subtraction.

Here's the step-by-step solution:

Find a common denominator for the fractions involved. In this case, the least common denominator (LCD) is 24, which is the least common multiple of 3, 8, and 6.

Convert the fractions to have the same denominator, which is 24:

4 - 1/3 - 7/8 + 1/6

= 4 * 24/24 - 1/3 * 8/8 - 7/8 * 3/3 + 1/6 * 4/4 (Multiplying each fraction by the appropriate form of 1 to get the common denominator)

= 96/24 - 8/24 - 21/24 + 4/24 (Performing the multiplication)

Combine the numerators over the common denominator:

= (96 - 8 - 21 + 4)/24 (Combining numerators)

= 71/24 (Performing the subtraction)

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Answer:

Step-by-step explanation:

It is -12.

The opposite of a positive number would be its negative.

The number of cups of sugar that are there for each cup of flour would be = 1/2 cup of sugar.

The recipe contains sugar of = 3 cups

The recipe contains flour of = 6 cups

If 3cups sugar = 6 cups of flour

X cups sugar = 1 cup of flour

make X the subject of formula;

X = 3×1/6

X = 3/6 = 1/2

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The given formula 9x - 5y = -160 is not in the form of direct variation.

The given formula 9x - 5y = -160 relates the temperature in degrees Fahrenheit y to the temperature in degrees Celsius x.

To determine whether the relationship is a direct variation or not, we need to consider the definition of direct variation.

A relationship is said to be a direct variation if one variable is a constant multiple of the other variable, i.e., y = kx or x = ky, where k is a constant of proportionality.

However, the given formula is not in the form of direct variation. It is a linear equation in two variables, and there is no constant of proportionality present.

Hence, we can conclude that the given relationship is not a direct variation.

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hi

4/7  =   8

7/7 =  ?  

so ?  =  7/7 * 8  /4/7 =   8/4/7 =  8 *7/4 = 4*2*7 /4 =   2*7 = 14

so whole thing  is  14

let's check :    14 * 4/7 =   56/7 = 8

Match initial data. answer is correct.

A circumscribed angle is an angle that has its vertex on the circumference of a circle and whose sides are chords of the circle. The measure of a circumscribed angle is equal to half the measure of the intercepted arc. Circumscribed angles are important in geometry because they are used to prove theorems about angles, chords, and arcs in circles. The opposite angles of a cyclic quadrilateral are always supplementary, and the sum of the angles in a cyclic polygon is always equal to (n-2)180 degrees, where n is the number of sides of the polygon.

If the radius of smaller-saw is 1.25 in, and radius of larger-saw is 2 inches, then larger-saw is 4.71 inches greater the smaller-saw.

The "Circumference" of a circle is defined as the distance around the boundary of a circle, it is also called perimeter of circle;

The diameter of the smaller saw can be calculated as:

⇒ diameter = 2 × radius = 2 × 1.25 inches = 2.5 inches;

The diameter of the larger saw is 1.5 inches greater than the diameter of the smaller saw, which means,

⇒ diameter of larger saw = diameter of smaller saw + 1.5 inches,

⇒ diameter of larger saw = 2.5 inches + 1.5 inches = 4 inches;

So, Circumference of circle is = 2 × π × radius;

The Circumference of "smaller-saw" = 2 × 3.14 × 1.25 inches,

⇒ circumference of smaller saw = 7.85 inches;

circumference of "larger-saw" = 2 × 3.14 × 2 inches

⇒ circumference of larger saw = 12.56 inches;

The difference in circumference between the two saws is:

⇒ circumference of larger saw - circumference of smaller saw

⇒ 12.56 inches - 7.85 inches = 4.71 inches;

Therefore, the circumference of the larger saw is 4.71 inches greater than the circumference of the smaller saw.

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The given question is incomplete, the complete question is

A carpenter has two different-sized circular saws. The smaller saw has the radius as 1.25 inch. The larger saw has a diameter that is 1.5 inches greater than the diameter of the smaller one.

How much greater is the circumference of the larger saw than the smaller saw? Use 3.14 for π

The expression that is equivalent to 6x2y + 2xy^5 include:

2(3x²y + xy^5).

2xy(3x + y⁴)

xy(6x + 2y⁴)

An expression can refer to a variety of things depending on the context in which it is used.

In mathematics and computer programming, an expression typically refers to a combination of numbers, variables, operators, and/or functions that are evaluated to produce a value. For example, "2 + 3" is an expression that evaluates to "5"

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On solving the question, we can say that Therefore, none of the answers to the question's assertions are true.

A mathematical equation is a formula that connects two claims and uses the equals symbol (=) to denote equivalence. An equation in algebra is a mathematical statement that establishes the equivalence of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign places a space between the variables 3x + 5 and 14. The relationship between the two sentences that are written on each side of a letter may be understood using a mathematical formula. The symbol and the single variable are frequently the same. as in, 2x - 4 equals 2, for instance.

Let's use "x" to symbolise box A's weight. Then, we could type:

Given that box B weighs 5 kg more than box A, its weight is "x + 5".

Given that box C weighs 3 kg more than box B, its weight is calculated as "x + 5 + 3" = "x + 8".

We can write: Since we are aware that the combined weight of the three boxes is 51 kg:

[tex]x + (x + 5) + (x + 8) = 51\\3x + 13 = 51\\3x = 38\\x = 12.67\\[/tex]

Therefore, box A weights around 12.67 kg. The weights of boxes B and C may also be ascertained using the equations we discovered earlier:

17.67 kg (x + 5) is the estimated weight of Box B.

The approximate weight of Box C is 25.67 kg (x + 8).

Therefore, none of the answers to the question's assertions are true.

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Answer:

A. 60 miles

Step-by-step explanation:

2 in. = 15mi or like 2in+2in+2in+2in = 8in

15mi+15mi+15mi+15mi = 60mi

2×4 =8

/

/

v

4 × 15mi = 60mi

The expressions that have the same value are: b) 3^4 = 81 and e) 9^2 = 81

To compare the expressions, we can simplify them using the rules of exponents:

a) 3^3 = 27

b) 3^4 = 81

c) 6^2 = 36

d) 6^3 = 216

e) 9^2 = 81

f) 9^3 = 729

Using the above as a guide, we have the following:

Therefore, the expressions that have the same value are: b) 3^4 = 81 and e) 9^2 = 81

So, options b and e have the same value.

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use slope equation -5 - (-3)/(2-1) then solve

The equation representing the relationship between the number of weeks (w) and the number of books collected (b):

b = 10w + 0

b = 10w

We can observe from the table that the number of books collected increases by 10 for each week.

Thus, there is a linear relationship between the number of weeks (w) and the number of books collected (b). We can represent this relationship using the equation:

b = mw + c

where b is the number of books collected, w is the number of weeks, m is the slope (rate of change), and c is the y-intercept (number of books collected at week 0).

The slope (m) is the change in the number of books collected per week, which is 10. We can now find the y-intercept (c) by substituting one of the points from the table into the equation. Let's use the point (1, 10):

10 = 10 * 1 + c

c = 0

Now we have the equation representing the relationship between the number of weeks (w) and the number of books collected (b):

b = 10w + 0

b = 10w

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the data in the form of a table, which shows the total number of books collected (b) for different number of weeks (w).

Weeks (w) Books Collected (b)

1 10

2 20

3 30

4 40

Trisha is collecting books to donate. The table below shows the total number of books collected, b, for different number of weeks, w. Which equation represents the relationship between the number of weeks, w, and the number of books collected, b?

Answer:

Yes, the figure is line symmetric.

A snowflake has six lines of symmetry. Therefore, the correct answer is: 6.

According to the given information, if 5 cups of flour are used in the recipe, we should use 5/3 cups of sugar.

Multiplication is an arithmetic operation that involves combining two or more numbers to get a product. It is a way of repeatedly adding a number to itself a certain number of times. The number being multiplied is called the multiplicand, while the number of times it is being multiplied is called the multiplier. The result of the multiplication operation is called the product

If the recipe requires 2 cups of flour for every 2/3 cups of sugar, we can write this relationship as:

2 cups of flour : 2/3 cups of sugar

To find out how many cups of sugar should be used if 5 cups of flour are included, we can set up a proportion:

2 cups of flour / 2/3 cups of sugar = 5 cups of flour / x cups of sugar

where x is the number of cups of sugar we want to find.

To solve for x, we can cross-multiply:

2 cups of flour * x cups of sugar = 2/3 cups of sugar * 5 cups of flour

2x = (2/3) * 5

2x = 10/3

x = 5/3

Therefore, According to the given information,  if 5 cups of flour are used in the recipe, we should use 5/3 cups of sugar.

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Answer:

If the value of y is directly proportional to the value of x, we can use the formula for direct variation to find the value of x when y = 30. The formula for direct variation is:

y = kx

where k is the constant of proportionality.

To find the value of k, we can use the values given in the problem:

y = kx

12 = k(8)

Solving for k, we get:

k = 12/8 = 3/2

Now that we know k, we can use the formula for direct variation to find the value of x when y = 30:

y = kx

30 = (3/2)x

Solving for x, we get:

x = (30)/(3/2) = 20

Therefore, when y = 30, x = 20

The description that correctly represents g(x) is g of x is a piecewise function, which equals negative 2, when x is less than or equal to negative 1, and it equals the quantity x minus 1 end quantity squared, when negative 1 is less than x is less than or equal to 0, and it equals negative x plus 1, when x is greater than 0 (third option).

Looking at the graph, we can see that:

Thus, the correct piecewise function that represents g(x) is:

g(x) = {-2 if x ≤ -1

{ (x-1)^2 if -1 < x ≤ 0

{ -x+1 if x > 0

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Answer:

-20

Step-by-step explanation:

[tex]\frac{5}{3}x +\frac{1}{3} x=13\frac{1}{3}+\frac{8}{3}x\\\\\frac{6}{3} x = 13 \frac{1}{3} +\frac{8}{3} x\\\\\frac{-40}{3} =\frac{2}{3} x\\\\\frac{3}{2} *(\frac{-40}{3} )\\\\\frac{3}{2} *\frac{2}{3} x\\\\-20 = x[/tex]

Answer: A Map Scale.

Step-by-step explanation:

A Map Scale is the relationship with the ground.

Answer:

The perpendicular bisector of a line segment AB is the line that passes through the midpoint of AB and is perpendicular to AB.

To find the equation of the perpendicular bisector of segment AB, we can follow these steps:

M = ( (x1 + x2)/2, (y1 + y2)/2 )

where A = (x1, y1) and B = (x2, y2).

M = ( (-6 + 14)/2, (4 - 12)/2 ) = (4, -4)

m = (y2 - y1) / (x2 - x1)

m = (-12 - 4) / (14 - (-6)) = -16/20 = -4/5

m_perp = -1/m

m_perp = -1/(-4/5) = 5/4

y - y1 = m(x - x1)

y - (-4) = (5/4)(x - 4)

Simplifying, we get:

y + 4 = (5/4)x - 5

(5/4)x - y - 9 = 0

So, the formula that expresses the fact that an arbitrary point P(x, y) is on the perpendicular bisector of segment AB is:

(5/4)x - y - 9 = 0

The scatter plots that do not show a linear relationship are B and C

The distribution of points on a scatter plot's graph can show a linear relationship between two variables. A linear relationship exists between two variables when there is a consistent change in one variable for every change in the other.

The horizontal axis and the vertical axis of a scatter plot each indicate a separate variable. Each data point is plotted on the graph based on its values for the two variables. If the variables are related to one another linearly, the points will often fall in a straight line.

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The tools you can use to measure the object is Ruler

First you need to Indicate the starting and ending points of the curved line on the string. To determine the distance between the two markings on the string, lay the string flat on a ruler, or a stretched-out measuring tape if the line is curved, and measure the length in between.

Commonly found in bars and restaurants, disposable straws intended for one-time use have a common size of 8.5 inches in length and width. The typical size of a drinking straw is  one that is having a width of 24 inches. At times, you may need a lengthier or broader straw to suit yourself.

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The resale value of the car after 3 years is $9,984.

Since the resale value decreases by 20%. Thus, the resale value of the car will be 80% of its original value.

After the first year, the resale value of the car will be 80% of its original value:

Resale value after 1 year = 80/100 * $19,500 = $15,600

After the second year, the resale value of the car will be 80% of its value after the first year:

Resale value after 2 years = 80/100 * $15,600 = $12,480

After the third year, the resale value of the car will be 80% of its value after the second year:

Resale value after 3 years = 80/100 * $12,480 = $9,984

Therefore, the resale value of the car after 3 years will be $9,984.

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Answer:

It is not a function

Step-by-step explanation:

A function is a rule from x to y that applies to all elements of x. Every element of x should have one image only.

Here, element "1" has two images 3 and 7. Therefore it's not a function.

The equation that shows how the number of soup spoons remaining, y, depends on the number of tables Lauren sets, x, is:

y = 98 - 8x

The initial number of soup spoons, 98, is reduced by 8 for each table Lauren sets. Therefore, the number of soup spoons remaining after x tables have been set is 98 - 8x.

Answer:

Using the FOIL method to multiply (x + 80)(x - 20), we get:

(x + 80)(x - 20) = x^2 - 20x + 80x - 1600

Simplifying the expression, we get:

(x + 80)(x - 20) = x^2 + 60x - 1600

Therefore, the answer is x^2 + 60x - 1600.

Answer:

If the point (1,5) lies on a circle with center (0,0), then the radius of the circle is the distance from the center to the point (1,5), which is:

r = sqrt((1-0)^2 + (5-0)^2) = sqrt(26)

So the equation of the circle is:

x^2 + y^2 = 26

To find a point in quadrant 2 that lies on the circle, we need to find a point with a negative x-coordinate and a positive y-coordinate that satisfies this equation.

Among the given options, only (a) (-5,1) and (e) (-2,3) have a negative x-coordinate. Let's check if they satisfy the equation of the circle:

For point (a) (-5,1):

x^2 + y^2 = 26

(-5)^2 + 1^2 = 26

25 + 1 = 26

This point does not lie on the circle.

For point (e) (-2,3):

x^2 + y^2 = 26

(-2)^2 + 3^2 = 26

4 + 9 = 26

This point also does not lie on the circle.

Therefore, among the given options, there is no point in quadrant 2 that lies on the circle.

Step-by-step explanation:

since the center of the circle is at the origin, that means that the circle is evenly going through all four quadrants - one quarter arc after the other.

the point (1, 5) is in the first quadrant (upper right one, positive x, positive y).

the circle arc in the second quadrant (upper left one, negative x, positive y) is the mirrored image of the arc in the first quadrant across the y-axis.

so, the point on it gets mirrored too.

that means, it's coordinates are then the same y and the x is converted to its negative value :

(-1, 5)

that is the easily identifiable point in the second quadrant that has to be on the circle.

Evander's principal at the beginning of July was approximately $16,533. Rounded to the nearest whole dollar, this is $16,533.

Applying  the formula for simple interest:

Interest = Principal x Rate x Time

Here, we know the interest ($248), the rate (18%), and the time (1/12 of a year for one month, since we're using a 360-day year).

Let the principal = "P":

$248 = P x 0.18 x (1/12)

$248 = P x 0.015

P = $248 / 0.015

P ≈ $16,533.33

Simple interest is described as an interest charge that borrowers pay lenders for a loan.

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