Please help and please make sure it’s right

Answer:

Step-by-step explanation:

True-False questions consists of 2 possible answer, which are 50% each, so basically is Charlie was just guessing 201 questions, which means his possibility of getting everything correct is \(\frac{1}{2^2^0^1}\), which is really small, his chance of getting 53,7% correct is \(\frac{1}{2^2^0^1 * 0.537}\) which is roughly arround \(\frac{1}{2^2^0^0}\)

The equation representing the cost of a bag is 2x + 18 = $68 and for each bag Britney has to pay $25.

Let us consider  'x' be the total cost representing amount of money to check each bag under the weight limit.

Additional amount to pay per bag for over weight limit is equal to $9

Total amount paid by Britney to check both the bags = $68

Equation represents the cost of bags is equal to :

2x + 2(9) = $68

⇒ 2x + 18 = $68

⇒ 2x = $68 - $ 18

⇒ 2x = $50

⇒ x = $50 / 2

⇒ x = $25

Therefore, the equation which represents the cost of a bag is 2x + 18 = $68 and cost for each bag is $25.

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To give your daughter $50,000 towards her college education in 15 years, you must set aside approximately $14,803.42 today.

To calculate the amount of money you need to set aside today, we can use the concept of future value of a lump sum. The future value is the amount of money an investment will grow to in the future, given a certain interest rate and time period.

In this case, we want to determine the present value (the amount you need to set aside today) to achieve a future value of $50,000 in 15 years, assuming an annual interest rate of 9 percent. The formula to calculate present value is:

Present Value = \(Future Value / (1 + Interest Rate)^T^i^m^e\)

Plugging in the values, we have:

Present Value = \($50,000 / (1 + 0.09)^1^5\)

Present Value ≈ $14,803.42

Therefore, you would need to set aside approximately $14,803.42 today in order to accumulate $50,000 for your daughter's college education in 15 years, assuming an annual interest rate of 9 percent.

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Answer:

Answer

If we add 76+(-90)-(-48)=34

Slope of the line passing through (-5,-4)  and (-1,3)is 1.75

The slope formula

slope = (y₂ - y₁) / (x₂ - x₁)

Notice that the slope of a line is easily calculated by hand using small, whole number coordinates. The formula becomes increasingly useful as the coordinates take on larger values or decimal values.

The  points belong to an increasing, linear function.

Equation: y = 1.75x + 4.75.

m=7/4=1.75.

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The curve that describes the level curve of value c of the surface \(z=x^{2}/4 + y^{2}/25\)  where c < 0 is a hyperbola i.e., the correct option is B.

To find the level curve, we set the surface equation equal to the constant value c:
\(c = x^{2}/4 + y^{2}/25\)
Since c is negative, let's rearrange the equation to isolate the terms with x and y:
\(y^{2}/25 - x^{2}/4 = -c\)
Now, we can rewrite the equation in a more recognizable form by dividing both sides by -c:
\(y^{2}/(25 * -c) - x^{2}/(4 * -c) = 1\)
This equation represents a hyperbola, as it has the general form of the equation for a hyperbola centered at the origin:
\(x^{2}/a^{2} - y^{2}/b^{2} = 1\)
Therefore, the level curve is a hyperbola.

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Answer:

364.5789473684211

Step-by-step explanation:

If the polygon is a square the other 2 coordinates are

The length of line in an ordered pair is calculated using the formula

d = √{(x₂ - x₁)² + (y₂ - y₁)²}

where

d = distance between the points

x₂ and x₁ = points in x coordinates

y₂ and y₁ = points in y coordinates

distance between points  (0, 0) and (3, 2) is the diagonal of the polygon calculated as follows

d = √{(x₂ - x₁)² + (y₂ - y₁)²}

d =√{(3 - 0)² + (2 - 0)²}

d =√{9 + 4}

d = √13 units

this is the hypotenuse

from Pythagoras theorem

let length of one side be x

√13² = x² + x²

13 = 2x²

6.5 = x²

x = 2.5495

x = 2.55 units

In ordered pair this is 2.55 units from the origin in the x and y direction

(0, 2.55) and (2.55, 0)

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Answer:

x + 5/4

Step-by-step explanation:

Answer:

Explanation:

Given the expression;

simplifying;

we have;

Therefore;

the slope of the graph is 3 and the y-intercept is -27. This means that the graph crosses the y-axis at the point (0,-27).

Answer:

y = -3x - 27

Step-by-step explanation:

9x - 3y = 81

-3y = 9x + 81

-3y/3 = 9x/3 + 81/3

-y = 3x + 27

y = -3x - 27

Answer:

aprox: 9 years?

Step-by-step explanation:

im sorry if this is wrong!

Answer:

2xy is l c m

Step-by-step explanation:

2xy is present in 4x^2y

Answer:

Your photo wont show up

Step-by-step explanation:

Answer:

Hello

1.  B. 2.35 * 10^11

2. A. 3 * 10^-2

The perimeter of a square is 80 minus 64 y units. Which expression can be used to show the side length of one side of the square?

Answer · 1 vote

Perimeter of the square80-64yA square has 4 sides, so divide the perimeter by 4:(80-64y) / 480 divided by 4 is 2064y divided by 4 is 16yOne side of the ..

Answer:

Its C

Step-by-step explanation:

took the test

Answer:

147

Step-by-step explanation:

angles x and 33 are supplementary so

x + 33 = 180

x = 180 - 33

x = 147

Answer:

\( \frac{1}{3} - \frac{1}{2} + \frac{2}{5} \)

\( = \frac{10 - 15 + 2 \times 6}{30} \)

\( = \frac{10 - 15 + 12}{30} \)

\( = \frac{ - 5 + 12}{30} \)

\( = \frac{7}{30} \)

Answer:

\( \frac{1}{3} - \frac{1}{2} + \frac{2}{5} \)

\( = \frac{10 - 15 + 2×6}{30} \)

\( = \frac{10 - 15 + 12}{30} \)

\( \frac{-5 +12}{30} \)

= 7 /30

Answer:

Take-home pay is the net amount of income received after the deduction of taxes, benefits, and voluntary contributions from a paycheck.

Step-by-step explanation:

Hope this helps!

The rate of change of the function that has a graph that passes

through the points (-1, 3) and (-2,-4) is slope and is equal to 7.

We have given two points  (-1, 3) and (-2,-4) .

Rate of change of graph is given by slope

Using slope formula , we get

      m = -4 - 3 / -2 - (-1)

      m = -7 / -2 + 1

      m = -7 / -1

       m = 7

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Answer:

Given:

radius of bigger half circle[R]=(7+7+14)/2=14cm

radius of smaller half circle [r]=14/2=7cm

Area of shaded region =1/2[πR² -πr²]

=1/2×22/7×[14²-7²]=231cm²

Area of shaded region=231cm²

Answer:

We'll need 2 points so we'll choose (-6, 0) and (0, -3).  

Let's calculate the slope (or 'm') using

Slope or m = (Y2 -Y1) ÷ (X2 -X1)

Slope ('m') = (-3 -0) / (0, - -6) = -3 / 6 = -1/2

Then we calculate the equation using:

(y - y1) = m • (x -x1)

(y - 0) = -1/2 * (x - -6)

y = -1/2 x -3

Source: http://www.1728.org/distance.htm

Step-by-step explanation:

Answer:

Step-by-step explanation:

X-intercept:  (-6, 0)

Y-intercept:  (0, -3)    ⇒   b = -3

Slope:   \(m=\dfrac{y_2-y_1}{x_2-x_1}\)

\(m=\dfrac{0+3}{-6+0}=-\dfrac12\)

Slope-intercept form  y = mx + b

\(y=-\frac12x-3\)        {multiply both sides by 2}

2y = - x - 6          {add x to both sides}

x + 2y = - 6

Answer:i think its 115 degres

Step-by-step explanation:

The required value of EC is 5 units.

Since DE is parallel to BC, we can use the property of similar triangles to set up a proportion:

AD/DB = AE/EC

We know that AD + DB = AB = x + 5. Since D is a point on AB, we can express AD and DB in terms of x:

AD = x, DB = x + 5 - x = 5

We also know that AE = 3 and ED = x + 1. Using these values, we can express AD in terms of ED:

AD = ED - AE = (x + 1) - 3 = x - 2

Substituting these values into the proportion, we get:

(x - 2)/5 = 3/EC

Multiplying both sides by 5EC, we get:

x - 2 = 15/EC

Multiplying both sides by EC, we get:

EC(x - 2) = 15

Expanding the left side, we get:

ECx - 2EC = 15

Solving for EC, we get:

EC = 15/(x - 2)

We are given that EC = x, so we can set these expressions equal to each other:

x = 15/(x - 2)

Multiplying both sides by (x - 2), we get:

x(x - 2) = 15

Expanding the left side, we get:

x² - 2x = 15

Bringing all terms to one side, we get:

x² - 2x - 15 = 0

We can factor this quadratic equation:

(x - 5)(x + 3) = 0

Therefore, x = 5 or x = -3. We reject x = -3 since we are given that EC > 0. Thus, the length of EC is: EC = x = 5.

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Yes, the tangent constraint can be applied between a line and an arc in many CAD (Computer-Aided Design) software programs.

In CAD, a tangent constraint is a geometric constraint that forces two entities (lines, arcs, circles, etc.) to share a common tangent at their point of contact. When you apply a tangent constraint between a line and an arc, the software will ensure that the line and the arc are always tangent to each other at their point of intersection.

This constraint is useful for designing mechanical components, such as gears or cams, where you need to ensure that the contact between two parts is smooth and continuous. It is also commonly used in architecture, where a building's curved surfaces may need to be tangent to adjacent straight lines or walls.

In short, the tangent constraint can be applied between a line and an arc, and it is a useful tool in many different fields of design.

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The degrees of freedom for a goodness-of-fit test with 7 categories is 6, and this value is used to determine the critical value for the chi-square test statistic.

The degrees of freedom (df) for a goodness-of-fit test with k categories is calculated as (k-1), where k represents the number of categories or groups being compared. Therefore, for a goodness-of-fit test with 7 categories, the degrees of freedom would be 6.

The goodness-of-fit test is a statistical test that assesses whether a set of observed data fits a particular theoretical distribution. The test involves comparing the observed frequencies of data in each category with the expected frequencies based on the theoretical distribution. The chi-square test is commonly used for this purpose.

The degrees of freedom in a chi-square goodness-of-fit test are important because they determine the critical value of the test statistic. The critical value is compared to the calculated chi-square value to determine whether the observed data fits the theoretical distribution.

If the calculated chi-square value is greater than the critical value, then the observed data does not fit the theoretical distribution and the null hypothesis is rejected. If the calculated chi-square value is less than the critical value, then the observed data fits the theoretical distribution and the null hypothesis is not rejected.

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To test whether each regression parameter is equal to zero at a 0.05 level of significance, we can perform a t-test using the estimated coefficient, standard error, and degrees of freedom.

The null hypothesis is that the coefficient is equal to zero, and we reject the null hypothesis if the p-value is less than 0.05. In this case, we find that both b0 and b1 have p-values less than 0.05, indicating that they are significantly different from zero.

The estimated regression parameters indicate that for every additional hour of weekly usage, the annual maintenance expense increases by b1. The intercept, b0, represents the expected annual maintenance expense when weekly usage is zero.

These interpretations are reasonable, as they align with our understanding of how the two variables are related and are supported by the statistical significance of the regression coefficients.

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Using the given formula, y = b tanθ / 2, with b = 100ft and θ = 16°, (b) we find that the height of the triangle is 29.01 ft when θ = 16°.

The given function is y=50 tanθb, Where, θ = 16°, and the length of the base is 100ft. As we know, the length of the base, b is given by :b = 2y / tanθ

Therefore, y = b tanθ / 2. We have b = 100ft, and θ = 16°So, y = b tanθ / 2y = 100 tan16° / 2y = 29.01 ft

Therefore, the height of the triangle when θ = 16° is 29.01 ft. In this problem, the given function is y=50 tanθb and we are to find the height of the triangle when θ=16°.

Here, we are given that the architect reduces the length of the base of the triangle to 100ft, which means the value of b has changed, and it is now 100ft. With this information, we can solve the problem by first finding the value of y using the formula y = b tanθ / 2, where b = 100ft and θ = 16°.

We plug in these values and calculate y, which turns out to be 29.01ft. Therefore, the height of the triangle when θ = 16° is 29.01 ft.

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Answer:

y= 65x+5

200 miles from the starting line

Step-by-step explanation:

so sorry no one has helped you but i hope this helps!

in order to find the slope intercept equation of this we have to look at the information. it says charlie has a 5 mile headstart and so that gives us our y-intercept or B

and then it says he goes 65mph meaning every hour he will go 65 miles so that gives us 65x because the x will represent the hours he is driving

so that leaves us with our equation of y=65x+5

and we have the plus 5 at the end because he will always have that 5 mile headstart

and then for the second part of the question it says where will be at 3 o'clock

so that means if he starts at 12 and now its 3 that means he drives 3 hours

so if you plug the 3 hrs into the equation we just created

it will give us 200 miles from the starting point at 12pm.

anyways hope this helps if it did please leave a like, rate it, and give me the brainliest if possible.

have a great day!

Answer: 2.2 and/or 2.20 the zero doesn't matter

Step-by-step explanation:

4 goes into 8, 2 times bring the 2 up (4x2=8)

8-8=0

Bring down the next 8

4 goes into 8, 2 times bring the 2 up (4x2=8)

8-8=0

4 goes into 0, 0 times

0-0=0 bring up the 0 or don't

you should get 2.2 and/or 2.20