Answer:
ROI = 150
Step-by-step explanation:
ROI = (25,000-10,000)/10,000 ×100=150
I need help with this as well
What is the length of DD'?
Answer:
The length of DD' is [tex]\sqrt{29}[/tex] or 5.39 units.
Step-by-step explanation:
The distance formula is
[tex]Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
From the given figure it is clear that the coordinates of D are (2,0) and coordinates of D' are (7,2).
Using distance formula we get
[tex]DD'=\sqrt{(7-2)^2+(2-0)^2}[/tex]
[tex]DD'=\sqrt{25+4}[/tex]
[tex]DD'=\sqrt{29}[/tex]
[tex]DD'\approx 5.39[/tex]
Therefore the length of DD' is [tex]\sqrt{29}[/tex] or 5.39 units.
What is the value of the missing number in the sequence below? 4, 12, 36,___, 324, 972, 2916
The missing number will be 108. The sequence is; 4, 12, 36,108, 324, 972, 2916.
What is a sequence?It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.
The given sequence is;
4, 12, 36,108, 324, 972, 2916
It is observed from the sequence that the following sequence follow a specific rule in which the progressive term is multiplied by a factor of 3.
[tex]\rm 4 \times 3 = 12 \\\\ 12 \times 3 = 36 \\\\ 36 \times 3 =108[/tex]
Hence, the missing number will be 108.
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A wood frame costs $1.50. Use a property to write an equivalent expression for the cost of a wood frame.
Which sentence is an example of the distributive property
The distributive property of multiplication is a very useful property that lets you simplify expressions in which you are multiplying a number by a sum or difference. The property states that the product of a sum or difference, such as 6(5 – 2), is equal to the sum or difference of the products – in this case, 6(5) – 6(2).
Remember that there are several ways to write multiplication. 3 x 6 = 3(6) = 3 • 6.
3 • (2 + 4) = 3 • 6 = 18.
Distributive Property of Multiplication over Addition
The distributive property of multiplication over addition can be used when you multiply a number by a sum. For example, suppose you want to multiply 3 by the sum of 10 + 2.
3(10 + 2) = ?
According to this property, you can add the numbers and then multiply by 3.
3(10 + 2) = 3(12) = 36. Or, you can first multiply each addend by the 3. (This is called distributing the 3.) Then, you can add the products.
The multiplication of 3(10) and 3(2) will each be done before you add.
3(10) + 3(2) = 30 + 6 = 36. Note that the answer is the same as before.
You probably use this property without knowing that you are using it. When a group (let’s say 5 of you) order food, and order the same thing (let’s say you each order a hamburger for $3 each and a coke for $1 each), you can compute the bill (without tax) in two ways. You can figure out how much each of you needs to pay and multiply the sum times the number of you. So, you each pay (3 + 1) and then multiply times 5. That’s 5(3 + 1) = 5(4) = 20. Or, you can figure out how much the 5 hamburgers will cost and the 5 cokes and then find the total. That’s 5(3) + 5(1) = 15 + 5 = 20. Either way, the answer is the same, $20.
The two methods are represented by the equations below. On the left side, we add 10 and 2, and then multiply by 3. The expression is rewritten using the distributive property on the right side, where we distribute the 3, then multiply each by 3 and add the results. Notice that the result is the same in each case.
Vonda works between 30 and 32 hours per week at a hair salon. she pays a one time $250 chair rental fee, and earns $40 per hour that she works. the hours she works are rounded to the nearest quarter hour. the function p(h)=40h−250 represents vonda's weekly pay as a function of hours worked. what is the practical domain of the function?
The practical domain of the function p(h) = 40h - 250 for Vonda's weekly pay is between 30 and 32 hours, inclusive, with increments of 0.25 hours. These values represent all the possible hours Vonda can work in a week.
To determine the practical domain of the function p(h) = 40h - 250, we need to consider the range of hours that Vonda works. The problem states that Vonda works between 30 and 32 hours per week, and her hours are rounded to the nearest quarter hour. Therefore, the possible values for h (in hours) are:
30.0030.2530.5030.7531.0031.2531.5031.7532.00Hence, the practical domain of the function p(h) is all the values between 30 and 32, inclusive, measured in quarter-hour increments.
If f(x) = 2x - 7, what is the value of f(2)?
A.-3
B.-5
C.5
D.3
One of the parking lot lights at a hospital has a motion detector on it, and the equation (x+10)2+(y−8)2=16 describes the boundary within which motion can be sensed.
What is the greatest distance, in feet, a person could be from the parking lot light and be detected?
HELP!!! What is the slant height x of the square pyramid? Express your answer in radical form.
To find the slant height of a square pyramid, we can use the Pythagorean theorem. The theorem should be applied as follows: A² = (y² + h²), to solve for A which is the slant height. Radical form implies that the answer will include the square root symbol.
Explanation:The question asks to find out the slant height x of a square pyramid. In order to do that, we have to invoke the Pythagorean theorem (x² + y² = h²). Here, x represents the slant height, y could be the half of the side of the base of the pyramid and h is the height from the base to the tip of the pyramid. Assuming that the pyramid is a right pyramid, the Pythagorean theorem applies.
So, the equation becomes A² = y² + h², where A is the slant height we are looking for. We solve for A to get, A = √(y² + h²). This is your slant height in radical form.
Please note you would need specific values for y and h to compute the numerical value of A.
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Russ is constructing the inscribed circle for △ABC . He has already used his compass and straightedge to complete the part of the construction shown in the figure.
What could be his next step?
A)Use the straightedge to draw a line through point N that intersects BC¯¯¯¯¯ .
B) Use the straightedge to draw the line through points M and P.
C) Place the point of the compass on point C and draw an arc that intersects AC¯¯¯¯¯ and BC¯¯¯¯¯ .
D)Place the point of the compass on point N and draw an arc that intersects AB¯¯¯¯¯ and BC¯¯¯¯¯ .
Answer: The answer is (C) Place the point of the compass on point C and draw an arc that intersects AC and BC.
Step-by-step explanation: Given that Russ is constructing the inscribed circle for △ABC and he has already used his compass and straightedge to complete the part of the construction shown in the given figure. We are to find his next step.
Since Russ has already constructed the angle bisector of ∠B, so next he shoul construct the angle bisector of either ∠A or ∠C. Since the steps for constructing angle bisector of ∠A are not in the options, so he should go with ∠C. For that, he must place the point of the compass on the point C and draw an arc that intersects AC and BC.
Thus, (C) is the correct option.
Can someone check my answer?
For y = x2 − 4x + 3,
Determine if the parabola opens up or down.
State if the vertex will be a maximum or minimum.
Find the vertex.
Find the x-intercepts.
Describe the graph of the equation.
Show all work and use complete sentences to receive full credit.,
Angles X and Y are supplementary. Angle X is 3 times the measure of angle Y. What is the measure of angle X?
Answer:
The measure of ∠X is 135°
Step-by-step explanation:
Given that angles X and Y are supplementary and also angle X is 3 times the measure of angle Y.
we have to find the measure of angle X.
Since X and Y are the supplementary therefore these add up to 180° i.e
[tex]\angle X+\angle Y=180\°......(1)[/tex]
Also angle X is 3 times the measure of angle Y i.e
[tex]\angle X=3\angle Y[/tex]
Substitute this value in equation (1), we get
[tex]3\angle Y+\angle Y=180\°......(1)[/tex]
[tex]4\angle Y= 180\°[/tex]
[tex]\angle Y=\frac{180\°}{4}=45\°[/tex]
[tex]\angle X=3\times 45\°=135\° [/tex]
Hence, the measure of ∠X is 135°
angle measure represented by 4.5 rotations counterclockwise
Please help me, i don't understand how to do this.
Solve V = 1 3 πr2h for h.
A) 3V πr2
B) V 3πr2
C) r sqrt 3V π
D) V - 1/3 πr2
Where is the vertex of the parabola?
y = x2 + 6x + 7
above the x-axis
on the x-axis
on the y-axis
below the x-axis
Answer:
below the x axis
Step-by-step explanation:
i took the test
Out of 1100 discs tested 13 are defective. Estimate the number of defective discs in a batch of 41000
Some people say that more babies are born in september than in any other month. to test this claim, you take a simple random sample of 150 students at your school and find that 21 of them were born in september. you are interested in whether the proportion born in september is higher than 1/12—what you would expect if september was no different from any other month.
Final answer:
To test whether the proportion of babies born in September is higher than the expected proportion of 1/12, we can use hypothesis testing. Given a sample of 150 students, with 21 of them born in September, we calculate the test statistic, compare it to the critical value, and make a decision.
Explanation:
To test whether the proportion of babies born in September is higher than the expected proportion of 1/12, we can use hypothesis testing. Let's set up the hypotheses:
Null Hypothesis (H0): The proportion of babies born in September is equal to 1/12.
Alternative Hypothesis (Ha): The proportion of babies born in September is greater than 1/12.
We can use a one-sample proportion test to test these hypotheses. Given that we have a simple random sample of 150 students at your school and 21 of them were born in September, we can calculate the sample proportion: 21/150 = 0.14.
Next, we calculate the test statistic using the formula: test statistic = (sample proportion - null proportion) / standard error. The null proportion is 1/12 = 0.0833, and the standard error is √[(null proportion * (1 - null proportion)) / sample size]. Calculating the test statistic gives us: test statistic = (0.14 - 0.0833) / √[(0.0833 * (1 - 0.0833)) / 150] = 2.92 (rounded to two decimal places).
Finally, we compare the test statistic to the critical value(s) at a chosen significance level to make a decision. The critical value(s) depend on the significance level and the direction of the alternative hypothesis. If the test statistic falls in the rejection region (i.e., it is greater than the critical value), we reject the null hypothesis and conclude that the proportion of babies born in September is higher than 1/12.
4(x − 3) − 5(x + 1) = 3 Which of the following algebraic properties is not needed to solve this equation?
is -3 larger than -2?
only answer if you know and not for the points
At the beginning of an experiment, there are 600 grams of contaminants. Each hour, half of the contaminants are filtered out. How many grams of contaminants remain after 4 hours?
what ones are relatively prime?
A) 11 & 121
B) 35 & 125
C) 39 & 75
D) 34 & 49
Answer:
it is 34 and 49
Step-by-step explanation:
because i'm big smart
CAN SOME ONE HELP ME WITH THIS HURRY PLEASE
p[x]=5b exponent x what do the a and b in exponential function represent
Triangle ABC has vertices A(4, 5), B(0, 5), and C(3, –1). The triangle is translated 3 units to the left and 1 unit up. What are the coordinates of B' after the translation?
a.(1, 6)
b.(–3, 6)
c.(0, 0)
d.(3, 1)
Answer:
b. [tex](-3,6)[/tex]
Step-by-step explanation:
We have been given that triangle ABC has vertices A(4, 5), B(0, 5), and C(3, –1). The triangle is translated 3 units to the left and 1 unit up.
To find the coordinates of B', we will shift x-coordinate of point B to left by 3 units and y-coordinate of point B to 1 unit up.
After the given transformation the coordinates of point B' would be:
[tex]B(0,5)\rightarrow B'((0-3),(5+1))\rightarrow (-3,6)[/tex]
Therefore, the coordinates of point B' are [tex](-3,6)[/tex] and option 'b' is the correct choice.
The Polynomial Remainder Theorem
The Polynomial Remainder Theorem in mathematics states that the remainder of dividing a polynomial P(x) by (x - a) is P(a). This theorem is linked to the Binomial theorem for series expansions and is useful in graphing and solving polynomials and quadratic equations.
Explanation:The Polynomial Remainder Theorem is a concept in mathematics associated with series expansions and equation graphing. This theorem states for a given polynomial P(x) and a number a, when P(x) is divided by the binomial (x - a), the remainder is P(a). This is a crucial concept when graphing polynomials, as understanding the remainder can assist in predicting the behavior of the polynomial curve. The theorem is tied to the Binomial theorem which provides a series expansion for expressing powers of a sum of terms (a + b)^n in terms of a and b.
To solve quadratic equations, which are second-order polynomials, the Polynomial Remainder Theorem can also be utilized. It can further clarify the solutions of quadratic functions when they are graphed. Furthermore, in the realm of function graphing, the theorem aids in visualizing how different terms contribute to the shape of the polynomial curve.
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Hey can somebody help me? I know it seems easy but I forgot the process on how to do this. Thanks in advance!
---------------------------------
1 1/2 - 1/2 = ???
Show your work please so I understand
Triangle ABC is translated on the coordinate plane below to create triangle A'B'C':
If parallelogram EFGH is translated according to the same rule that translated triangle ABC, what is the ordered pair of point H'?
The new coordinates of Point H' will be (6, -5) after the translation.
Triangle ABC is translated on the coordinate plane below to create triangle A'B'C':
If parallelogram EFGH is translated according to the same rule that translated triangle ABC.
How to find the point after translation?In the triangle, point A is moved 5 units to the right side and down 6 units.
If we count the same amount of space right side and down from point H, we will end up on a point (6, -5).
Therefore, The new coordinates of Point H' will be (6, -5) after the translation.
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kat had 2 3/5 bags of carrots.she gave 3/4 of a bag of carrots To her sister which shows how many bags of carrots kat had left
Whole numbers are written on cards and then placed in a bag. Pilar selects a single card, writes down the number, and then places it back in the bag. She repeats this 46 times.
Pilar calculates the relative frequency of each number card.
Outcome 1 2 3 4 5
Relative Frequency 0.05 0.35 0.26 0.13 0.21
Which statement about Pilar's experiment is true?
The outcomes do not appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
The outcomes appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
The outcomes do not appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Pilar's experiment.
The outcomes appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Pilar's experiment.
Answer:
Option 1
The outcomes do not appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
Step-by-step explanation:
Given :
The outcomes are : 1 2 3 4 5
The Relative Frequency : 0.05 0.35 0.26 0.13 0.21
To find : Which statement about Pilar's experiment is true?
Solution :
We can see the outcomes do not appear to be equally likely.
Since 0.05 and 1 are not close in number range along with the other options.
So, The outcomes do not appear to be equally likely.
Uniform probability model - A model in which every outcome has equal probability.
But in given case, Probabilities in Pilar's experiment does not support a uniform probability model.
So, A uniform probability model is not a good model to represent probabilities in Pilar's experiment.
Therefore, Option 1 is correct.
The correct statement about Pilar's experiment is: A) The outcomes do not appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
To determine whether a uniform probability model is appropriate, we need to assess if each outcome has the same likelihood of occurring. In a uniform probability model, if there are 'n' possible outcomes, each outcome has a probability of 1/n.
In Pilar's experiment, she selects a card 46 times, and we are given the relative frequencies of the outcomes 1 through 5. If the outcomes were equally likely, we would expect each number to have a relative frequency of approximately 1/5, since there are 5 different numbers.
Let's calculate the expected relative frequency for each number if the outcomes were equally likely:
Expected relative frequency for each number = 1/5 = 0.2.
Now, let's compare this with the given relative frequencies:
Number 1 has a relative frequency of 0.05 Number 2 has a relative frequency of 0.35 Number 3 has a relative frequency of 0.26 Number 4 has a relative frequency of 0.13 Number 5 has a relative frequency of 0.21These relative frequencies are not close to the expected relative frequency of 0.20 for a uniform distribution. Since the relative frequencies vary significantly from one another, the outcomes do not appear to be equally likely. Therefore, a uniform probability model, which assumes equal likelihood for all outcomes, would not be a good fit for Pilar's experiment.
Hence, the correct conclusion is that the outcomes do not appear to be equally likely, and thus a uniform probability model is not suitable for representing the probabilities in Pilar's experiment.
The complete question is Whole numbers are written on cards and then placed in a bag. Pilar selects a single card, writes down the number, and then places it back in the bag. She repeats this 46 times.
Pilar calculates the relative frequency of each number card.
Outcome 1 2 3 4 5
Relative Frequency 0.05 0.35 0.26 0.13 0.21
Which statement about Pilar's experiment is true?
A) The outcomes do not appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
B) The outcomes appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Pilar's experiment.
C) The outcomes do not appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Pilar's experiment.
D) The outcomes appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Pilar's experiment.
What is the image of the point (4,-2) after a rotation 270 degree clockwise about the origin?
Answer:
The image of the point (4, -2) is (2, 4).
Step-by-step explanation:
Since, the rule of rotation 270 degree clockwise about the origin is,
[tex](x,y)\rightarrow (-y,x)[/tex]
Where, (-y,x) is the image of the point (x,y),
Thus, by the above rule,
[tex](4,-2)\rightarrow (-(-2), 4)[/tex]
Hence, the image of the point (4, -2) is (2, 4).