Name the variables: 23xy - 4

Answer:

-0.3

Step-by-step explanation:

X---Y---Z. XY+Y ---} 7x+4x+3 ---} 10x+3=0 ---} 10x=-3 ---} x=-0.3

Answer:

Chill, it ain't complicated

Step-by-step explanation:

A histogram is basically a bar graph but there's no space between the bars.

The graph has to be the dependent component (the score) against the independent component (the number of students who took the math quiz)

Depending on your size of paper pick a simple scale (1 cm could be either 5% or 10%)

Leave some space between the y (vertical) axis and the first bar.

Do them in the order they appear, i.e 75, 95... 80

The result of Multiplying 138.2 km by 3.5 km is 483.7 km².

To perform the indicated calculation, we need to multiply 138.2 km by 3.5 km.138.2 km x 3.5 km = 483.7 km²

The result of multiplying 138.2 km by 3.5 km is 483.7 km².

When dealing with significant figures, we should consider the least precise measurement involved in the calculation, which in this case is 3.5 km (with two significant figures). Therefore, we should round the answer to the same number of significant figures, resulting in 480 km².

So, rounding according to the rules for significant figures, the result of the calculation 138.2 km x 3.5 km is approximately 480 km².

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Answer:

\(3x = 84 - 2y - - - (i) \\ 9x = 8y - 24 - - - - (ii) \\ from \: (ii) \\ 3(3x) = 8y - 24 \\ but \: from \: (i) \: \: 3x = 84 - 2y \\ hence \: put \: (i) \: in \: (ii) \\ 3(84 - 2y) = 8y - 24 \\ 252 - 6y = 8y - 24 \\ 276 = 14y \\ y = \frac{138}{7} \\ x = \frac{104}{7} \)

Step-by-step explanation:

d the house Lee will work per week

Answer:

d

Step-by-step explanation:

The exact value of x (the hypotenuse) is  √170

We can use the Pythagorean theorem, which states that for any right triangle with legs of lengths a and b, and hypotenuse of length c, we have:

c^2 = a^2 + b^2

In this case, we have a = 7 and b = 11, so we can substitute these values into the formula:

x^2 = 7^2 + 11^2

Simplifying the right-hand side:

x^2 = 49 + 121

x^2 = 170

Taking the square root of both sides:

x = √170

Therefore, the exact value of x is √170

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Answer:The answer in a fraction is 405/916 and the decimal form is 0.44213973

…

Step-by-step explanation:

Answer:

34x-5 = 2x/27+10

or, 34x-5=(2x+270)/27

or, 918x - 135=2x+270

or, 918x-2x=270+135

or, 916x= 405

or, x = 0.44

Answer:

yes you may use the answer will be 100% correct

Answer:

For this case we can make the following rule of three:

1 1/2 ---------> 3/4

x --------------> 9

We clear the value of x:

x = ((9) / (3/4)) * (1 1/2)

Rewriting we have:

x = ((9) * (4/3)) * (1 1/2)

x = (36/3) * (1 1/2)

x = (12) * (1 1/2)

x = (12) * (3/2)

x = 18

Answer:

you would need 18 quarts of sparkling water to mix with 9 quarts of grape juice

Answer:

the value of angle A is 82.819°

Answer:3.92

Step-by-step explanation:

find 1/5 of 9.8kg

=1.96kg

3/5 of pears = 1.96*3=5.88kg

apples= 2/5 so 1.96*2=3.92kg

OR 9.8-5.88=3.92kg

Answer:

3.92kg of Apples

Step-by-step explanation:

The size of Pears weight is 3/5 of 9.8kg...

=3/5 * 9.8

=3 * 9.8/5

=29.4/5

=5.88kg

Thus, the size of the Apples will be 9.8kg - 5.88kg

= 3.92kg.

Thus, the farmer sold 3.92kg of Apples at the farmer's market.

The movement of the particle on the circle is its displacement.

The value of dy/dt at this time is -9/2.

Differentiation is a process, in Maths, where we find the instantaneous rate of change in function based on one of its variables.

A particle moves on the circle x^2 + y^2=25 in the XY-plane for time t≥0. At the time when the particle is at the point (3,4), dxdt=6.

The equation of the circle is given as:

\(\rm x^2 + y^2=25\)

Differentiate with respect to time

\(\rm 2x \times \dfrac{dx}{dt}+2y \times \dfrac{dy}{dt}=0\)

Substitute all the values in the equation

\(\rm 2x \times \dfrac{dx}{dt}+2y \times \dfrac{dy}{dt}=0\\\\2(3) \times 6+2(4)\times \dfrac{dy}{dt}=0\\\\ 6 \times 6+8 \times \dfrac{dy}{dt}=0\\\\ 36+8\times \dfrac{dy}{dt}=0\\\\ 8\times \dfrac{dy}{dt}=-36\\\\ \dfrac{dy}{dt}= \dfrac{-36}{8}\\\\ \dfrac{dy}{dt}= \dfrac{-9}{2}\)

Hence, the value of dy/dt at this time is -9/2.

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Answer:

H=42 cm

Step-by-step explanation:

21/7=3

14*3=42

The quadrilateral described by the coordinates (0,0), (0,b), (a,b), and (a,0) in the first coordinate plane, where a is not equal to b, is a rectangle due to its right angles and equal opposite sides.

The quadrilateral described by the coordinates (0,0), (0,b), (a,b), and (a,0) in the first coordinate plane, where a is not equal to b, is actually a rectangle.

A rectangle is a quadrilateral with four right angles (90-degree angles). In this case, the sides connecting (0,0) to (0,b) and connecting (a,0) to (a,b) are vertical and have the same length of b, while the sides connecting (0,0) to (a,0) and connecting (0,b) to (a,b) are horizontal and have the same length of a. Thus, all four angles of the quadrilateral are right angles.

Since the opposite sides of the quadrilateral are parallel and equal in length, and all angles are right angles, the most accurate classification for this quadrilateral is indeed a rectangle.

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The tire with a diameter of 22 units will travel a certain distance in 3 rotations. To calculate this distance, we need to find the circumference of the tire, which is equal to the product of its diameter and π (pi).

By multiplying the circumference by 3 (representing 3 rotations), we can determine the total distance traveled by the tire.

The formula for the circumference of a circle is given by C = πd, where C represents the circumference, π is approximately 3.14, and d is the diameter of the circle. In this case, the diameter of the tire is 22 units.

Using the formula, we can calculate the circumference of the tire as C = 3.14 * 22 = 69.08 units.

To find the distance traveled in 3 rotations, we multiply the circumference by 3: 69.08 * 3 = 207.24 units.

Therefore, the tire will travel approximately 207.24 units in 3 rotations.

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Step-by-step explanation:

y = x - 4 and y = 4x + 2

=> x - 4 = 4x + 2

=> 3x = -6

=> x = -2

y = x - 4 = (-2) - 4 = -6

The solutions are x = -2 and y = -6.

Answer:

x = -2

y = -6

Step-by-step explanation:

y = x - 4

y = 4x + 2

y = y

then:

x-4 = 4x+2

x - 4x = 4 + 2

-3x = 6

x = 6/-3

x = -2

y = x - 4

y = -2 - 4

y = -6

Answer:

Bravery

Step-by-step explanation:

I took the test just now, and it was correct!

The number of cords in 1 m³ are 0.3 based on their dimensions 8 ft, 4 ft and 4 ft.

Number of cords will be calculated by the formula -

Number of cords = total volume ÷ volume of one cord

Total volume is 1 m³

Volume of one cord is further given by the formula -

Volume of one cord = length × breadth × height

Keep the values in formula -

Volume of one cord = 8 × 4 × 4

Performing multiplication on Right Hand Side of the equation

Volume of one cord = 128 ft³

As per the known information, 1 feet is 0.305 meter

So, 1 ft³ = 0.028 m³

Volume of one cord = 128 × 0.028

Performing multiplication

Volume of one cord = 3.63 m³

Now calculating the number of cords

Number of cords = 1/3.63

Performing division

Number of cords = 0.3

Thus, there are 0.3 cord.

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Answer:

8 hours.

Explanation:

An Equation can be created:

y = 38 + 6.30t   ("t" denotes time taken in hours and "y" amount cost)

============

Solve for t, given amount cost: $88.40

38 + 6.30t = 88.40

6.30t = 88.40 - 38

6.30t = 50.4

t = 50.4/6.3

t = 8

So, they can use the meeting room for 8 hours.

The equation is

So

FOR 8 HOURS

Answer:

it is more easier to use a histogram and accurate

Answer:

Line graph

Step-by-step explanation:

A line graph is specifically used to display data that changes over time, a line plot uses several points connected by straight lines on an x and y axis.

I wouldn't choose a histogram because a histogram is used to summarize continuous data.

As well as I wouldn't use a circle graph becasue it is often used to show the percentage of of population who gave a certain answer.

At a 95% confidence level, the approximate margin of error for determining wait times in the express lines is approximately 2.8 minutes.

The margin of error is a measure of the uncertainty or variability in the data collected from a sample when estimating a population parameter. It represents the range within which the true population parameter is likely to fall.

To calculate the margin of error, several factors need to be considered, including the sample size and the desired confidence level. In this case, the grocery store manager randomly timed customers to estimate the wait times. Let's assume they collected a sufficiently large sample size.

For a 95% confidence level, we can use the standard Z-score associated with a 95% confidence level, which is approximately 1.96. This Z-score corresponds to a two-tailed test and encompasses 95% of the area under a normal distribution curve.

The formula to calculate the margin of error is:

Margin of Error = Z * (Standard Deviation / √Sample Size)

Since the problem doesn't provide the standard deviation or sample size, we can't calculate the exact margin of error. However, assuming a typical standard deviation for wait times and a reasonably large sample size, we can estimate the margin of error to be approximately 2.8 minutes, rounded to the nearest tenth.

Keep in mind that to obtain a more accurate margin of error, the specific values of the standard deviation and sample size need to be known. Additionally, this estimation assumes the data follows a normal distribution, which may not always be the case in practice.

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The approximate area of the trapezoid is determined as  13.95 unit².

The approximate area of the trapezoid is calculated as follows;

Area = ¹/₂(b₁ + b₂)h

Where;

The y-coordinates of the points on the curve at x=3/2 and x=4 is calculated as follows;

y(3/2) = - (3/2)²/2 + 3/2 + 5

y(3/2) = -9/8 + 3/2 + 5

y(3/2) = 5.375

y(4) = -4²/2 + 4 + 5

y(4) = -8 + 9

y(4) = 1

h = 5.375 - 1 = 4.375

The approximate area of the trapezoid is calculated as;

Area = ¹/₂(5.375 + 1) x 4.375

Area = 13.95 unit²

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3a - 4b

substitute a = a and b= 6 in the above

3a - 4(6)

3a - 24

Answer:

the answer is $20.33 I hoñe it helps

Answer:

There are three possible types of solutions for a system of nonlinear equations involving a parabola and a line.

Step-by-step explanation:

68% falls within 83.4 ± 13.3 = (70.1, 96.7)

95% falls within 83.4 ± 2 * 13.3 = (56.8, 110)

99.7% falls within 83.4 ± 3 * 13.3 = (43.5, 123.3)

Empirical rule states that for a normal distribution, 68% falls within one standard deviation from the mean, 95% falls within two standard deviation from the mean and 99.7% falls within three standard deviation from the mean.

Given that mean = 83.4, standard deviation = 13.3, hence:

68% falls within 83.4 ± 13.3 = (70.1, 96.7)

95% falls within 83.4 ± 2 * 13.3 = (56.8, 110)

99.7% falls within 83.4 ± 3 * 13.3 = (43.5, 123.3)

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n = - 3

How is the given equation  \(5^{n} =\frac{1}{125}\)   solved to find n ?

Converting the fraction to negative exponential form,

\(5^{n} ={125}^{-1} \\\\5^{n} ={(5^{3})}^{-1} \\\\\text{We know } (a^{n} )^{m} =a^{nm} \\\\\text{Applying this exponent power rule in the above expression},\\\\5^{n} = 5^{-3} \\\\\text{As the corresponding exponents are equal}\\\\n= -3\)

What are laws of exponents?

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Area of the figure is 150 units²

A semicircle is a half of a circle or the locus of all points that are equidistant from two endpoints on a diameter of a circle. It can be thought of as a curved shape that looks like half of a circle, with a flat side on one end.

The area of a semicircle can be found using the formula:

Area = (πr²)/2

where r is the radius of the circle.

Area of given figure= Area of rectangular part + Area of semicircle-Area of semicircle

=10×15

=150units².

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The complete question is;

Find the Area of the figure below, composed of a rectangle and one semicircle,

with another semicircle removed. Round to the nearest tenths place.

Image is attached below.

Answer:

m = 24

Step-by-step explanation:

m + 7° + 2m + 11° = 90°

3m + 18° = 90°

3m = 90°- 18°

3m = 72

(divide both sides by 3)

therefore : m = 24