A plumber comes to the house. He charges $50 for an initial fee plus $30 per hour. The equation C=50 +30h represents the relationship between the quantities in this situation, where C is the cost in dollars for the job and h is the number of hours.

1. Name a possible solution to this equation C=50 + 30h. What does the solution mean?

Answer:

\( {x}^{3} + 7 {x}^{2} + 11x + 2\)

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Answer:

Margin of error = E = 40

Step-by-step explanation:

Assuming 99% confidence level

Given that x = 253.9  

s.d = 63.6

n = 18

Degrees of freedom = df = n - 1 = 18 - 1 = 17

At 99% confidence level the t is, α = 1 - 99% = 1 - 0.99 = 0.01

α/2 = 0.01 / 2 = 0.005

t α/2,df = t,0.005 = = 2.680 (using student t table)

Margin of error = E = t α/2,df * (s.d/√n)

Margin of error = 2.680*63.6/√18

Margin of error = 2.680*63.6/4.242641

Margin of error = 2.680*14.99066265564303

Margin of error = 40.17

Margin of error = E = 40

Answer:

II

Step-by-step explanation:

The base angles of an isosceles trapezoid are congruent.

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-Dante

Answer:

I would say the answer is A.

Step-by-step explanation:

Hope it helps :)

Answer:

what help I can do for you

Answer:

where is the questions

Step-by-step explanation:

you should write correct question

The point (7,84) represents a precise location on a graph or coordinate plane.

A coordinate is a set of values that specifies the position or location of a point in a geometric space.

The point (7,84) represents a specific location on a graph or coordinate plane. The first number, 7, represents the point's position on the x-axis, which is a horizontal line that runs left to right. The second number, 84, represents the point's position on the y-axis, which is a vertical line that runs up and down. Together, the two numbers give us a precise location for the point.

In this situation, we don't have enough context to know what the point (7,84) represents. It could be the location of a city on a map, the amount of rainfall in inches on a specific day, or the price of a stock at a particular time. However, regardless of the situation, the point (7,84) is simply a specific location in a two-dimensional space that has been identified using coordinates.

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Complete Question:

What does the point (7,84) represent in the graph?​ And define the explanation for each value.

Answer:

After 4 coin flips, Johnny should expect to see 3 heads and 1 tails

Step-by-step explanation:

If the coin is 3 times more likely to land on heads than tails, then that means the probability ratio of the coin landing heads to tails is 3 to 1, or 3:1. This means that if a coin is flipped for times, it is statistically probable for the coin to land on heads 3 times, and tails just 1 time. This can be scaled too. If a coin is flipped 8 times, it is probable that the coin will land on heads 6 times, and tails 2 times.

Answer:

d. -5/2x + 5 (negative five-halves x + 5)

Step-by-step explanation:

In order to find the equation for the line that passes through these points, you must identify the slope and y-intercept. You can find the slope by finding the change in y divided by the change in x:

using (0, 5) and (2, 0),

change in y = 5

change in x = -2

(change in y)/(change in x) = -5/2

So, the slope is -5/2. You don't need to calculate the y-intercept since one of the points already is the y-intercept; when x is 0, y is 5, so the y-intercept is 5. Now, you can write your equation:

using y = mx + b, where m = slope and b = y-intercept,

y = -5/2x + 5

Answer:

d

Step-by-step explanation:

The matrix A of the rotation about the y-axis through an angle of π/2 clockwise as viewed from the positive y-axis is \(A=\left[\begin{array}{ccc}0 & 0 & -1 \\0 & 1 & 0 \\1 & 0 & 0\end{array}\right]\).

In mathematics, a matrix is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and columns, which is used to represent a mathematical object or a property of such an object.

To find the matrix A of the rotation about the y-axis through an angle of π/2 (90 degrees) clockwise as viewed from the positive y-axis, we can use the following rotation matrix:

\(A=\left[\begin{array}{ccc}\cos (\theta) & 0 & -\sin (\theta) \\0 & 1 & 0 \\\sin (\theta) & 0 & \cos (\theta)\end{array}\right]\)

Substitute θ with π/2, which is the angle of rotation.

\(A=\left[\begin{array}{ccc}\cos \left(\frac{\pi}{2}\right) & 0 & -\sin \left(\frac{\pi}{2}\right) \\0 & 1 & 0 \\\sin \left(\frac{\pi}{2}\right) & 0 & \cos \left(\frac{\pi}{2}\right)\end{array}\right]\)

Compute the trigonometric values for cos( π/2) and sin( π/2).

cos( π/2) = 0
sin( π/2) = 1

Substitute the computed values back into the matrix.

\(A=\left[\begin{array}{ccc}0 & 0 & -1 \\0 & 1 & 0 \\1 & 0 & 0\end{array}\right]\)

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Answer:

It's (8/3) 6  I took the test and that was the answer. Your Welcome!!!!!!!!!!!!!

Answer:

Its 83 the power of 6. Also Please choose my anwer as brainliest

y = -1/3x + 1

y = -2x - 3

We can compare the equations to the graphs and see which graph represents the intersection point of the two equations.

The first equation, y = -1/3x + 1, has a negative slope (-1/3) and a y-intercept of 1.

The second equation, y = -2x - 3, also has a negative slope (-2) and a y-intercept of -3.

Based on the slopes and y-intercepts, we can identify the correct graph by finding the point where the two lines intersect.

Unfortunately, since the graphs are not provided, I am unable to determine which specific graph shows the solution to the system of linear equations. I recommend referring to the graph representation of the equations and identifying the intersection point to determine the correct graph.

Answer:

Step-by-step explanation:

65 is the sum of 23 and Gail's age:

Let Gali's age be g .

The expression is

\(\\ \sf\longmapsto g+23=65\)

Answer:

Answer:

just place them on the chart

Step-by-step explanation:

Answer:

B.    y= x2 + 3

Step-by-step explanation:

Guided Practice

x

y

0

3

1

4

2

7

3

12

Write a function rule that best models the data in the table.

A.

y = x + 3

B.

y = 3x + 1

C.

y = x2 + 3

The required Lindsey's investment investment worth in four years was $4126.97.

The interest on a deposit that is calculated using both the initial principle and the accrued interest from prior periods is known as compound interest. In other words, compound interest is interest that is earned on interest.

he formula for calculating compound interest is:

A = P * (1 + r/n)^(nt)

where:

A is the end balance (the amount Lindsey's investment will be worth)

P is the principal (the initial amount invested)

r is the annual interest rate as a decimal (6.5% as a decimal is 0.065)

n is the number of times the interest is compounded in a year (in this case, it is compounded annually, so n = 1)

t is the number of years the money is invested for

Substituting the values into the formula:

A = 3250 * (1 + 0.065)^(1 * 4)

A = 3250 * (1.065)^4

A = 3250 * 1.265765

A = 4126.97

So after four years, Lindsey's investment was worth $4126.97.

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Answer:

Step-by-step explanation:

To find the answer to Part A, we can turn this into a simple equation:

192.7 - (2.3 times 25) = temperature, the missing value.

So therefore, after 25 minutes pass, the temperature is equal to

192.7 - 57.5, or:

135.2 = Answer to Part A.

Now, onto Part B. We can use another equation!

192.7 - 2.3x = 100.7

Now, we must solve the given equation, first by taking 100.7 from each side:

192.7 - 2.3x = 100.7

-100.7             -100.7

We are now left with: 92 - 2.3x = 0 - we must now add 2.3x to 2.3x and 0, giving us this:

92 = 2.3x, which is equivalent to 920 = 23x, if that is what you prefer to solve.

To give us our missing value (x), we can divide 920 by 23, giving us: x = 40. This is the answer to Part B: 40 minutes.

I hope this was really helpful! Tell me if you need any more help.

Answer: D. < CBA

Step-by-step explanation:

Answer:

Step-by-step explanation:

ima a braintlest

Answer:

After 17,190 years, the amount of carbon-14 left would be approximately 5 mg.

The half-life of carbon-14 is 5,730 years, which means that every 5,730 years, half of the remaining carbon-14 decays. To calculate the amount of carbon-14 remaining after 17,190 years, we can use the formula:

A = A0 * (1/2)^(t/T)

where:

A0 is the initial amount (80 mg)

t is the time elapsed (17,190 years)

T is the half-life (5,730 years)

A = 80 * (1/2)^(17,190/5,730)

A = 80 * (1/2)^3

A = 80 * (1/8)

A = 10 mg * 1/2

A = 5 mg

Answer:

The area of the circle

Step-by-step explanation:

The area of a circle is given by:

A = pi•r^2

☝️That is "Area equals pi times r squared"

Fun fact: you can use r (radius) or d (diameter) to find the circumference (distance all the way around a circle)

C = pi • d

or C = 2pi • r

But for area (all the space inside)

A = pi • r^2

You get:

Work/Explanation:

When multiplying pi by the square of a circle's radius, we get the circle's area.

This is how it looks in a formula:

\(\bf{\pi\times r^2}\)

Which can be simplified to

\(\bf{\pi r^2}\)

Which is the same as

\(\bf{A=\pi r^2}\)

Hi there!  

»»————-　★　————-««

I believe your answer is:  

Two units left, 7 units up.

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Here’s why:

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Hope this helps you. I apologize if it’s incorrect.  

Answer:

to left and above

Step-by-step explanation:

In this number line, we marked -7/6 to the left of -1, and 4/3 to the right of 1.

To plot the numbers -1 1/6 and 4/3 on a number line, we need to find their relative positions and mark them accordingly.

Let's start with -1 1/6:

-1 1/6 can be written as a mixed number or an improper fraction. To simplify the plotting process, let's convert it to an improper fraction.

-1 1/6 = -(6/6 + 1/6) = -7/6

On the number line, we start from zero and move to the left because it is a negative number. Since -7/6 is less than -1, we will place it closer to zero but to the left of -1.

Next, let's plot 4/3:

4/3 is already in the form of an improper fraction. To plot it, we start from zero and move to the right since it is a positive number. 4/3 is greater than 1, so we will place it to the right of 1.

On this number line, we marked -7/6 to the left of -1, and 4/3 to the right of 1.

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The target weight for the cereal boxes should be set at 770 grams.

To meet the legal requirement, the manufacturer needs to ensure that no more than 9% of their cereal boxes contain less than 700 g. This means that at least 91% of the cereal boxes must contain 700 g or more.

Let's assume that the manufacturer sets the target weight at x grams. This means that they expect most of the cereal boxes to have a weight of x grams. To ensure that at least 91% of the cereal boxes contain 700 g or more, we can set up the following inequality:

0.91(x) + 0.09(x-700) ≥ 700

Solving for x, we get:

x ≥ 770

Therefore, the manufacturer should set the target weight of the cereal boxes to at least 770 grams to ensure compliance with the law.

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Answer:

there will be 16 bags

Step-by-step explanation:

The speed of red light in a diamond, denoted as vred, is approximately equal to the speed of light in a vacuum, c, which is 2.998 × 10^8 m/s, rounded to four significant figures.

According to the principles of optics and the refractive index of a material, the speed of light in a medium is generally lower than its speed in a vacuum. The refractive index of a diamond is approximately 2.42.

To calculate the speed of red light in a diamond, we can use the formula vred = c / n, where c represents the speed of light in a vacuum and n represents the refractive index of the diamond.

Substituting the given values, we have vred = (2.998 × 10^8 m/s) / 2.42. Evaluating this expression yields a result of approximately 1.239 × 10^8 m/s.

Rounding this value to four significant figures, we obtain the speed of red light in a diamond, vred, as approximately 1.239 × 10^8 m/s.

Therefore, the speed of red light in a diamond, rounded to four significant figures, is approximately 1.239 × 10^8 m/s, which is slightly lower than the speed of light in a vacuum, c.

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Answer:

The derivative of f(x,y)=x2 y2 in the direction of the unit tangent vector of the curve r(t)=(cos t t sin t)i (sin t−t cos t)j, t>0 is 2x^2+2y^2

The answer is C    x=m/u