Answer:
Step-by-step explanation:
94.6
Can someone help me with this question!!
Thanks.
Answer:
T = 19 cause you add 5 and 1 and subtract it by 44 and divide it by 2
At the end of 1st Quarter of 2009 the median price of a single-family home in Charleston/No. Charleston was $184,990. Single-family home prices in Charleston/No. Charleston decreased from the 1st Qtr of 2008 by 8.15%. NOTE: Depreciation means a negative value for r. (a). Estimate the median price of a single-family home in the 1st Qtr of 2008.
(b). If the median price of a single-family home falls at the same rate for the next 2 years, estimate the median price of a single-family home in the 1st Qtr of 2011.
The estimated median price of a single-family home in Charleston/No. Charleston in the 1st Quarter of 2008 is $201,048. If the median price continues to decrease at the same rate for the next two years, the estimated median price of a single-family home in the 1st Quarter of 2011 would be $144,458.
(a) To estimate the median price of a single-family home in the 1st Quarter of 2008, we need to calculate the original price before the 8.15% decrease. Let's assume the original price was P. The price after the decrease can be calculated as P - 8.15% of P, which translates to P - (0.0815 * P) = P(1 - 0.0815). Given that the end of 1st Quarter of 2009 median price was $184,990, we can set up the equation as $184,990 = P(1 - 0.0815) and solve for P. This gives us P ≈ $201,048 as the estimated median price of a single-family home in the 1st Quarter of 2008.
(b) If the median price of a single-family home falls at the same rate for the next two years, we can calculate the price for the 1st Quarter of 2011 using the estimated median price from the 1st Quarter of 2009. Starting with the median price of $184,990, we need to apply an 8.15% decrease for two consecutive years. After the first year, the price would be $184,990 - (0.0815 * $184,990) = $169,805.95. Applying the same percentage decrease for the second year, the price would be $169,805.95 - (0.0815 * $169,805.95) = $156,012.32. Therefore, the estimated median price of a single-family home in the 1st Quarter of 2011 would be approximately $144,458.
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Simplify the following expressions. Type out and label your answers for A and B.
The value of the expression \(7^{-8} . 7^6\) is 1/7
The value of the expression \(3. 3^7\) is \(3^8\).
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
A)
\(7^{-8} . 7^6\)
= \(7^{-8 + 6}\)
= \(7^{-2}\)
= 1/7
B)
3. \(3^7\)
= \(3^1.3^7\)
= \(3^{1 + 7}\)
= \(3^8\)
Thus,
The value of the expression is 1/7 and \(3^8.\)
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The Earth has a diameter of about 7,917.5 miles. What is the surface area of our planet? (Show your work, including the formula, along with your answer. Round your answer to the nearest tenth)
Answer:
196,836,571.6 miles²
Step-by-step explanation:
the earth is shaped like a sphere. the surface area of the earth can be determined by calculating the surface area of a sphere
surface area of a sphere = 4πr²
π= 3.14
r = 7,917.5 / 2 = 3958.75 miles
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero
4 x 3.14 x 3958.75² = 196,836,571.6 miles²
The ratio of number of text messages sent by Lucas to the number of text messages sent by his sister is 4 to 9. Lucas sent 72 text messages. How many text messages did his sister send?
Answer:The number of text messages sent by his sister=162
Step-by-step explanation:
Step 1
The ratio of number of text messages sent by Lucas to the number of text messages sent by his sister =4 to 9= 4:9
Number of text messages sent by Lucas =72
Total ratio is given as 4+ 9= 13
Step 2
such that the total number of messages sent by Lucas and by his sister will be calculated as
Ratio of text messages sent by Lucas/ total ratio x Total messages = Number of text messages sent by Lucas . Let X = Total number of messages
4/13 x X = 72
X=72 x 13 / 4 =234
Therefore, The number of text messages sent by his sister= ratio of text messages sent by his sister/ Total ratio x Total number of messages =
9/13 X 234= 162 messages
How do I determine maximal velocity from the acceleration vs time graph?
To determine the maximal velocity from an acceleration vs. time graph, you need to follow these steps:
Identify the time interval during which the acceleration remains constant or nearly constant. This interval can be identified as a straight line on the graph.
Calculate the acceleration value during this interval by finding the slope of the line. The slope is the change in acceleration divided by the change in time.
Use the acceleration value and the time interval to calculate the change in velocity during this interval using the formula:
Δv = aΔt
Where Δv is the change in velocity, a is the acceleration, and Δt is the time interval.
Add the change in velocity to the initial velocity at the start of the time interval to obtain the maximal velocity. If the initial velocity was zero, then the maximal velocity will be equal to the change in velocity.
vmax = vi + Δv
Where vmax is the maximal velocity and vi is the initial velocity.
Note that this method assumes that the acceleration is constant or nearly constant during the time interval of interest. If the acceleration changes significantly during this time interval, you will need to break it down into smaller intervals and repeat the above steps for each interval to determine the maximal velocity.
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Factorise the link expression 5(x- 2) - y(2-x)
Step-by-step explanation:
5(x- 2) - y(2-x)
5(x- 2) - -y(x-2)
5(x- 2) + y(x-2)
=(5+y) (x-2)
in how many different ways can the letters of the word detail' be arranged in such a way that the vowels occupy only the odd positions?
The number of ways in which the word detail can be arranged in such a way that the vowels occupy only the odd positions is 36.
We will find the number of permutations in which the word DETAIL can be arranged such that the vowels occupy odd positions.
The vowels are E, A and I. They can occupy 1st, 3rd and 5th position in any order. Hence, the number of ways to do that is 3! = 6.
Now, the consonants D, T and L can occupy 2nd, 4th and 6th position in any order. Hence, the number of ways to do that is 3! = 6.
Hence,
Total number of ways = 3! * 3! = 6*6 = 36.
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If
x
=
9
and
y
=
−
2
, evaluate the following expression:
2
x
y
Answer:
solution,
given,
x=9 and y=-2
now,
2xy
= 2*9 * -2
= 18 * -2
= -36#
The value 2xy is -36.
What is evaluation?Evaluation is the structured interpretation and giving of meaning to predicted or actual impacts of proposals or results.
Given that, x = 9 and y = -2
2xy = 2*2*-9 = -36
Hence, The value 2xy is -36.
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the meaure of the exterior angel of a hexagon are x,3x,,4x,5x,8x, and 9x find the meaure of the larget exterior angel
The largest exterior angle of hexagone is 108°.
Given that exterior angle of a hexagon are x, 3x, 4x, 5x, 8x and 9x.
Exterior angles are those that run parallel to a polygon’s inner angles but are located outside of polygon.
We know that sum of exterior angle of any polygon is 360°.
So, sum of exterior angle of hexagon will be 360°.
x + 3x + 4x + 5x + 8x + 9x = 360°
30x = 360°
x = 360° / 30
x = 12°
Now the largest angle = 9 * 12 = 108°
Therefore, the largest angle of hexagon is 108°.
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ABCD is a parallelogram. Find mzB.
Answer:
m∠B = 121°
Step-by-step explanation:
\(10x-19=9x-5\)
\(10x=9x+14\) (add 19 on both sides)
\(x=14\) (subtract 9x on both sides)
\(9(14)-5 = 126-5=121\)
Answer: m∠B=121°
Step-by-step explanation:
The opposite angles of the parallelogram are equal
Hence,
(10x-19)°=(9x-5)°
10x-19=9x-5
10x-19-9x=9x-5-9x
x-19=-5
x-19+19=-5+19
x=14
Hence,
m∠B=(9(14)-5)°
m∠B=(126-5)°
m∠B=121°
1. What is the m2<5? Explain how you know. (2 points)
2.What is the measure of the sum of the angles in a triangle? (2 points)
3. L3 is in a triangle with L4 and L5. Write and solve an equation to find the m L3. (2 points)
4. What is the measure of a straight angle? (2 points)
5. L2 is in a straight line with L1 and L3. Write and solve an equation to find the m L2 (2 points)
Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data. (a). Choose the best answer for residuals plot A. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases. B. The fanned pattern indicates that the linear model is not appropriate. C. The model's predicting power increases as the values of the explanatory variable increases. The scattered residuals plot indicates an appropriate linear model. (b). Choose the best answer for residuals plot A. The scattered residuals plot indicates an appropriate linear model. B. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship is not linear. C. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases.
Residual Plot A indicates that the linear model is not appropriate because the fanned pattern shows that the model's predicting power decreases as the values of the explanatory variable increases. Residual Plot B indicates that the linear model is appropriate because the scattered residuals suggest a linear relationship.
Residual Plot A shows a fanned pattern which indicates that the linear model is not appropriate. This means that the model's predicting power decreases as the values of the explanatory variable increases. This suggests that the relationship between the dependent and independent variables is not linear and a different model may be necessary. Residual Plot B, on the other hand, shows a scattered pattern which suggests that the linear model is appropriate. The scattered pattern indicates that the data points are randomly distributed, which is a sign of a linear relationship. This indicates that the linear model is an appropriate fit for the data.
the complete question is :
Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data. (a). Choose the best answer for residuals plot A. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases. B. The fanned pattern indicates that the linear model is not appropriate. C. The model's predicting power increases as the values of the explanatory variable increases. The scattered residuals plot indicates an appropriate linear model. (b). Choose the best answer for residuals plot A. The scattered residuals plot indicates an appropriate linear model. B. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship is not linear. C. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases.
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Analyze the diagram below and complete the instructions that follow.
K
B
A
гс
F
E
Given that ZCFE ZCFA, mZCFB = 68°, and mZEFD= 62°, find the measure of ZAFD.
The measure of ZAFD is 50 degrees.
Based on the given information:
ZCFE is congruent to ZCFA.
mZCFB = 68°.
mZEFD = 62°.
To find the measure of ZAFD, we can use the fact that angles in the same segment of a circle are equal.
Since ZCFE and ZCFA are congruent, angle ZCFE is equal to angle ZCFA.
Therefore, mZCFA = mZCFE.
Now, let's find the measure of angle ZCFE:
mZCFE = mZCFB + mZEFD (Angle Addition Postulate)
mZCFE = 68° + 62°
mZCFE = 130°
Since ZCFA is congruent to ZCFE, we can conclude that mZCFA is also equal to 130°.
Now, to find the measure of ZAFD, we need to consider the angles in the quadrilateral ZAFD.
The sum of the angles in a quadrilateral is always 360°.
mZAFD + mZAFB + mZBFD + mZBFA = 360°
We know that mZAFB and mZBFD are equal to 90° because they are right angles (angle AFB and angle BFD are right angles in the diagram).
Therefore, we can rewrite the equation as:
mZAFD + 90° + 90° + mZBFA = 360°
Simplifying:
mZAFD + 180° + mZBFA = 360°
Rearranging the equation:
mZAFD + mZBFA = 360° - 180°
mZAFD + mZBFA = 180°
We know that mZBFA is equal to mZCFA, which is 130°.
Substituting the known values into the equation:
mZAFD + 130° = 180°
Subtracting 130° from both sides:
mZAFD = 180° - 130°
mZAFD = 50°
Therefore, the measure of ZAFD is 50 degrees.
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Ms. Adams needs to make 50 ml of 15% saline solution. However, she only has bottles of 7.5% and 20% solution. How many milliliters of each does she need to mix?
Answer: 20 mL of 7.5% solution and 30 mL of 20% solution
Step-by-step explanation:
Let the amount of 7.5% solution in mL be \(x\) and the amount of 20% solution in mL be \(y\).
Then, we know that \(x+y=50\) (from the total amount) and that \(0.075x+0.20y=50(0.15)\) from the concentration.
\(x+y=50 \implies y=50-x\\\\\therefore 0.075x+0.20(50-x)=50(0.15)\\\\0.075x+10-0.20x=7.5\\\\-0.125x=-2.5\\\\x=20\\\\\implies y=50-20=30\)
Scott drove 754 miles in 13 hours how many miles would he drive in 8 hours
You would divide 13 by 754=58
Then 58 times 8= 464
So 464 miles
Victor wants to buy fertilizer for his yard. The yard measures 35 feet by 55 feet. The directions on the bag of fertilizer say that one bag will cover 1,240 sq ft.
How many bags of fertilizer should Victor buy to be sure that he covers the entire yard?
Answer:
2 bags
Step-by-step explanation:
area of the yard= 35*55= 1925 ft²
1 bag covers 1240 ft²,
required number:
1925/1240= 1.55 ≈ 2 bags
so 2 bags needed to cover the area of the yard fully
What are the solutions of the inequality 2x² x 6 0?
The solutions of the inequality \(2x^{2} + x - 6 = 0\) are 3/2, -2. This can be found by using the Quadratic Formula, which states that for any quadratic equation of the form \(ax^{2} +bx + c = 0\), the solutions are \(x = -b +/-\sqrt{b^{2} -4ac} /2a\).
Discriminant: b² - 4 a c = 1 - 4(2)(-6) = 1 + 48 = 49
Solution 1: x = \(-b + \sqrt{b^{2} -4ac} /2a\) = (-1 + √49)/(2×2) = (-1 +7)/4 = 6/4 = 3/2
Solution 2: x = \(-b-\sqrt{b^{2} -4ac} /2a\)= (-1 - √49)/(2×2) = -8/4 = -2
So, the two solutions are 3/2 and -2.
The equation can also be written as,
\(2x^{2} +4x -3x-6=0\)
\(2x(x+2) -3(x+2) = 0\)
\((2x-3)(x+2) = 0\)
x = 3/2, -2
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Marian Plunket owns her own business and is considering an investment. if she undertakes the investment, it will pay $28,000 at the end of each of the new 3 years. the opportunity requires an initial investment of $7,000 plus an additional investment at the end of the second year of $35,000. what is the NPV of this opportunity if the interest rate is 8% per year? Should Marian take it?
The NPV is positive, it is worth taking the Investment.
Net Present Value (NPV) is an assessment method that determines the attractiveness of an investment. It is a technique that determines whether an investment has a positive or negative present value.
This method involves determining the future cash inflows and outflows and adjusting them to their present value. This helps determine the profitability of the investment, taking into account the time value of money and inflation.The formula for calculating NPV is:
NPV = Σ [CFt / (1 + r)t] – CIWhere CFt = the expected cash flow in period t, r = the discount rate, and CI = the initial investment.
The given problem can be solved by using the following steps:
Calculate the present value (PV) of the expected cash inflows:
Year 1: $28,000 / (1 + 0.08)¹ = $25,925.93Year 2: $28,000 / (1 + 0.08)² = $24,009.11Year 3: $28,000 / (1 + 0.08)³ = $22,173.78Total PV = $72,108.82
Calculate the PV of the initial investment: CI = $7,000 / (1 + 0.08)¹ + $35,000 / (1 + 0.08)²CI = $37,287.43Calculate the NPV by subtracting the initial investment from the total PV: NPV = $72,108.82 – $37,287.43 = $34,821.39
Since the NPV is positive, it is worth taking the investment.
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What is the equation of the line that passes through the point (8, 6) and has a slope
of 1/4
Answer: explanation
Step-by-step explanation:
The equation of the line will be y=Ax+B where we have to identify the constants A and B. Since the slope will be 1/4 we must have A=1/4. Since we need the line to pass through the point (-8,6) we have 6=(1/4)(-8)+B which is the same as 6=-2+B or B=8. Thus, y=(1/4)x+8.
What is the volume of a storage container that measures 14 ft long,ft wide, and ft high?
Answer:
2744 ft^2
Step-by-step explanation:
volume= length x width x height
14 x 14 x 14 = 2744
What is the quotient? a-3/7 / 3-1/21
The quotient of a-3/7 / 3-1/21 is 3/2(a - 3)
The quotient of a-3/7 / 3-a/21 is -3
Determining the quotient of a division operationFrom the question, we are to determine the quotient of the given division operation.
The given division operation is
a - 3/ 7 / 3 -1 / 21
That is,
a - 3/ 7 ÷ 3 -1 / 21
This becomes
a - 3 / 7 × 21 / 3 -1
a - 3 / 7 × 21 / 2
3(a - 3) / 2
= 3/2(a - 3)
If we are to find the quotient of
a - 3/ 7 / 3 -a / 21
This becomes
a - 3/ 7 ÷ 3 - a / 21
a - 3/ 7 × 21 / 3 - a
21(a -3) / 7(3 - a)
3( a - 3) / (3 -a )
Multiply the numerator and the denominator by -1
-1 × 3( a - 3) / -1 × (3 -a )
-3( a - 3) / (-3 + a)
-3( a - 3) / (a - 3)
= -3
Hence, the quotient is -3
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The table shows the estimated number of bees, y, in a hive x days after a pesticide is released near the hive.
A 2-column table with 6 rows. The first column is labeled number of days with entries 0, 10, 20, 30, 40, 50. The second column is labeled estimated number of bees with entries 10,000; 7,500; 5,600; 4,200; 3,200; 2,400.
Which function best models the data?
y = 9,958(0.972)x
y = 0.972(9,958)x
y = 9,219x– 150
y = –150x + 9,219
Answer:
A
Step-by-step explanation:
y = 9,958(0.972)x
Function which best models the given data is -150x + 9219.
What is the solution of an equation?A solution is an assignment of values to the unknown variables that makes the equality in the equation true.
According to the given question
y represents the number of bees.
and, x represents the number of days.
Since, we have to find the function to represent the given data.
As, we know the given data are the solution of any function, so they must satisfy the function. For this we will take any value of x and y and check whether it satisfy the given function or not.
From the given data,
Let check for the point (0, 1000).
Substitute (0, 1000) in the given function one by one.
For, y = 9,958(0.972)x
At, x = 0
We get y = 0
⇒ ( 0, 1000) is not the solution of the function 9958(0.72)x
For, y = 0.972(9,958)x
At, x = 0
we get y = 0
⇒ (0, 1000) is not the solution for the function 0.972(9958)x
For, y = 9219x - 150
At x = 0
we get y = -150
⇒ (0, 10000) is not the solution of function, 9219x -150
For, y = -150x + 9219
At x = 0
y = 9219 which is nearly equals to 10000 because y is the estimated number of bees.
⇒ (0, 10000) is the solution of the given function y = -150x + 9219 .
Hence, the function which best models the given data is -150x + 9219.
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true or false? Induction is a kind of thinking you use to form general ideas and rules based on mathematical formulas?
your answer is false
(4a–3)^(2)–16 wirte the expresion as a product
Answer: 16a^2−24a−7
Step-by-step explanation:
F(x)=1/x. g(x)=x-4 Can you evaluate (g o f)(0) why or why not.
(g o f)(0) cannot be evaluated due to the undefined nature of f(x) at x = 0.
To evaluate (g o f)(0), we need to substitute 0 into the composite function (g o f)(x) = g(f(x)). However, we encounter an issue when considering the function f(x) = 1/x.
The function f(x) has a vertical asymptote at x = 0, which means the function approaches infinity as x approaches 0 from the left or right. This implies that f(x) is undefined at x = 0. Since f(x) is undefined at 0, we cannot evaluate (g o f)(0) since it requires the input of f(x) at x = 0.
In other words, we cannot substitute 0 into f(x) to obtain a valid value to use in the function g(x) = x - 4.
Therefore, (g o f)(0) cannot be evaluated due to the undefined nature of f(x) at x = 0.
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jeff paid $4773 for 6 identical printers and 3 identical cameras. ron bought 4 such printers and 6 such cameras and paid $5002 in all. what is the cost of each printer?
The cost of each printer is $568.
Find cost per unitTo find the cost of each printer, we need to use a system of equations.
Let's call the cost of each printer "p" and the cost of each camera "c".
The first equation we can create is: 6p + 3c = 4773
The second equation we can create is: 4p + 6c = 5002
Now we can use the elimination method to solve for one of the variables.
Let's eliminate the "c" variable by multiplying the first equation by -2: -12p - 6c = -9546
And then add the two equations together: -8p = -4544
Now we can solve for "p" by dividing both sides by -8: p = 568
So the cost of each printer is $568.
To find the cost of each camera, we can plug the value of "p" back into one of the original equations and solve for "c":
6(568) + 3c = 4773
3408 + 3c = 4773
3c = 1365
c = 455
So the cost of each camera is $455.
Therefore, the cost of each printer is $568 and the cost of each camera is $455.
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P = x y . Find P when: x = 8 and y = − 11
Answer:
P= -88
Step-by-step explanation:
Since P=xy (Or x times y)
We can solve it since we know that x and y is: 8 and -11
So 8 times -11
Which is -88
Thus P= -88
Hope this helps!
Elaine is buying cube shaped blocks for a craft project. She needs the dimensions to the cubes to be less than 5 inches along each edge. Which of the following would work according to the size she needs?A. Cubes with a volume of 216 in³B. Cubes with a volume of 125 in³C. Cubes with a volume of 64 in³D. Both B and C would work
Answer: To determine if a cube with a given volume is suitable for Elaine's project, we need to check if the edge length of the cube is less than 5 inches.
The formula for the volume of a cube is V = s^3, where s represents the length of each side of the cube.
Let's calculate the edge length for each given volume option:
A. Cubes with a volume of 216 in³:
Taking the cube root of 216, we get ∛216 = 6. This means each side of the cube is 6 inches long. Since 6 is not less than 5, option A does not work.
B. Cubes with a volume of 125 in³:
∛125 = 5. This means each side of the cube is 5 inches long. Since 5 is equal to 5, option B does work.
C. Cubes with a volume of 64 in³:
∛64 = 4. This means each side of the cube is 4 inches long. Since 4 is less than 5, option C does work.
D. Both B and C would work:
Based on the analysis above, option B (volume of 125 in³) and option C (volume of 64 in³) both have edge lengths less than 5 inches, so they would work for Elaine's project.
Therefore, the correct answer is D. Both B and C would work.
how do you increase 220 by 5%
Step-by-step explanation:
Increase the number by 5% of its value.
Percentage increase = 5% × 220
New value =
220 + Percentage increase =
220 + (5% × 220) =
220 + 5% × 220 =
(1 + 5%) × 220 =
(100% + 5%) × 220 =
105% × 220 =
105 ÷ 100 × 220 =
105 × 220 ÷ 100 =
23,100 ÷ 100 =
231