Final amount = 6675, interest earned will be 675
A thermometer is taken from a room where the temperature is 20°C to the outdoors, where the temperature is 6°C. After one minute the thermometer reads 13°C. (Round your answers to one decimal place.) (a) What will the reading on the thermometer be after one more minute? eC (b) When will the thermometer read 7°C? min
The problem requires us to determine the readings of the thermometer after one more minute and the time it would take for the thermometer to read 7°C.The reading on the thermometer after one more minute is given by the formula: T = Te + (Ta - Te)(1 - e-k(t-t0))
Where T is the temperature of the thermometer after t minutes Ta is the ambient temperature of the thermometer Te is the initial temperature of the thermometer, and k is the constant of proportionality Given that Ta = 6°C, Te = 20°C, and T = 13°C for t = 1 minute. We can determine k as follows:
T - Te = (Ta - Te)(1 - e-k(t-t0))
13 - 20 = (6 - 20)(1 - e-k(1-0))
-7 = -14e-k
We can then solve for k by dividing both sides by -14, thus:
k = ln(1/2) = -0.693
We can now determine the temperature of the thermometer after one more minute, thus:
T = Te + (Ta - Te)(1 - e-k(t-t0))
T = 20 + (6 - 20)(1 - e-(-0.693)(2-1))
= 16.7°C
The reading on the thermometer after one more minute is 16.7°C. To determine when the thermometer will read 7°C, we set T = 7°C in the formula:
T = Te + (Ta - Te)(1 - e-k(t-t0))7
= 20 + (6 - 20)(1 - e-(-0.693)(t-1))
Simplifying the equation gives:
e-(-0.693)(t-1) = 0.5ln(0.5)(t-1)
= -0.693t
= -0.693 / ln(0.5) + 1t
≈ 4.8 minutes
The thermometer will read 7°C after about 4.8 minutes.
To know more about thermometer visit:
https://brainly.com/question/31385741
#SPJ11
Given the similarities statement HIJ ~ WXY which angle corresponds with
Answer:
I
Step-by-step explanation:
determine the area under the standard normal curve that lies between z-2 and z-0.1 round to four decimal places.
The area under the standard normal curve is 0.4374
How to determine the area under the standard normal curve?From the question, we have the following parameters that can be used in our computation:
Distribution = standard normal curve
The area = between z = -2 and z = -0.1
First, we calculate the z-scores at z = -2 and z = -0.1
Using a z-table (see attachment), we have
z(-2) = 0.02275
z(-0.1) = 0.46017
The area is then calculated as
Area = 0.46017 - 0.02275
Evaluate the difference
Area = 0.4374
Hence, the area is 0.4374
Read more about z-scores at
https://brainly.com/question/29538019
#SPJ1
A structural break occurs when we see A. an unexpected shift in time-series data. B. a number of outliers in cross-section data. C. a general upward trend over time in time-series data. D. an independent variable is correlated with the dependent variable but there is no theoretical justification on for the relationship.
A structural break occurs when we see A. an unexpected shift in time-series data.
It is the change in a time series's data-generating mechanism, it is a phenomenon that occurs when a significant event or structural shift in the economy alters the underlying data-generating mechanism. A structural break can happen for several reasons, including natural catastrophes, changes in economic policy, new inventions, and other reasons that alter the way the data is generated.
In the presence of a structural break, we can't assume that the relationships between variables before and after the break are the same. The primary objective of identifying structural breaks in the time-series is to detect changes in the behavior of the series over time, such as changes in the variance of the series, changes in the mean of the series, and changes in the covariance of the series. So therefore the correct answer is A. an unexpected shift in time-series data, the structural break occurs.
To know more about economic policy visit:
https://brainly.com/question/30104789
#SPJ11
Kayla rode her bike 75 miles home from college one weekend and then rode the bus back to college. It took her 2 hours less to ride back to college on the bus than it took her to ride home on her bike, and the average speed of the bus was 10 miles per hour faster than kayla’s biking speed. Find kayla’s biking speed
When Kayla rode her bike home from college one weekend, her biking speed is 15 miles per hour
Speed is defined as the ratio between the distance and the amount of time an object traveled.
speed = distance/time
If the average speed of the bus was 10 miles per hour faster than Kayla’s biking speed, we have:
average speed of the bus = 10 mph + biking speed
let x = biking speed
y = average speed of the bus
y = 10 + x
Covering the same distance of 75 miles, calculate the time it took her riding the bus and the bike.
time = distance/speed
time riding the bus = 75 miles/(10 + x)
time riding the bike = 75 miles/x
If it took her 2 hours less to ride back to college on the bus than it took her to ride home on her bike
time riding the bus = time riding the bike - 2
75 miles/(10 + x) = (75 miles/x) - 2
75/(10 + x) = (75 - 2x)/x
Multiplying both sides by x(10 + x),
x(10 + x)[75/(10 + x)] = x(10 + x)[(75 - 2x)/x]
75x = 750 - 20x + 75x - 2x^2
2x^2 + 20x - 750 = 0
x^2 + 10x - 375 = 0
(x - 15)(x + 25) = 0
x = 15 ; x = -25
Since we cannot have negative amount of time, choose x = 15.
Hence, Kayla's biking speed is 15 miles per hour.
Learn more about speed here: https://brainly.com/question/6504879
#SPJ4
Your friend writes 1.475% as a decimal. Is your friend correct? Explain your reasoning. 1.475% = 1.475% = 147.5
Answer:
no because the decimal doesn't have a % sign its 147.5
solve the following equations step by step
x + 7 = 4
\( \large \text{Answer} \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \)
\(x - 7 = 4 \\ x - 7 + 7 = 4 + 7 \\ x = 4 + 7 \\ x = 11\)
Since your answer is ' 11 '
♡ hope it was helpful for you ♡~
Answer:
Thank you for points
Step-by-step explanation:
Thank you
Seven gallons of a sugar solution was mixed with 4 gallons of a 80 percent sugar solution to make an 72 percent sugar solution. Find the percent concentration of the first solution. (a) 70% (b) 61% (c) 69% (d) 67%
Answer:
67%
Step-by-step explanation:
Let the percentage of the first solution = x
7 gallons + 4 gallons = 11 gallons
Our system of equation is
Seven gallons of a sugar solution was mixed with 4 gallons of a 80 percent sugar solution to make an 72 percent sugar solution.
7 gallons × x % + 4 gallons × 80% = 72% × 11 gallons
= 7x + 3.2 = 7.92
Collect like terms
7x = 7.92 - 3.2
7x = 4.72
x = 4.72/7
x = 0.6742857143
Converting to percentage
0.6742857143 × 100
= 67.42857143%
Approximately, the percent concentration of the first solution is 67%
Determine if the vectors vi = (2, -1,2,3), v2 = (1,2, 5, -1), v3 = (7,-1,5, 8) are linearly 1.) independent vectors in R4. Туре: L1 2 1 2 3;1 2 5 -1;7 -15 8] LR1 rref(L) If you decide that vı, V2, V3 are linearly independent type: ANSL1= 1 Otherwise type ANSL1= 0 2.) Determine if the vectors vi = (2,-1,0, 3), v2 = (1,2, 5, -1), v3 = (7, -1,5, 8) are linearly independent vectors in R4 Туре: L2 [2 10 3;1 2 5 - 1;7 -15 8 LR2 rref(L2) If you decide that vi, v2,V3 are linearly independent type: ANSL2 1 Otherwise type ANSL2= 0 3.) If the vectors in problem 2 above are linearly dependent, write vi as linear combi nation of two other vectors Туре: L3 2 10 3;1 2 5 - 1;7 -15 8 LR3= rref(L3) Solve L3 X 0 to get c'1+c202+ c3v3 = 0 then solve it for v1. (need pen and paper !!!! Your answer should look like v1 = av2 +bug If you calculated a and b, type ANSa [a] Enter the numerical value of a inside the bracket for a type ANSb b Enter the numerical value of b inside the bracket for b
1.) ANSL1= 1
2.) ANSL2= 1
3.) ANSa = -1, ANSb = -2
Are the given vectors linearly independent in R4?For the first question, ANSL1= 1, indicating that the vectors v1, v2, and v3 are linearly independent in R4.
For the second question, ANSL2= 1, which means that the vectors v1, v2, and v3 are also linearly independent in R4.
Since ANSL2= 1, the vectors v1, v2, and v3 are linearly independent. Therefore, it is not possible to express v1 as a linear combination of the other vectors.
Learn more about: Linear independence
brainly.com/question/30884648
#SPJ11
a. if the value of land in an area is increasing 9 percent a year, how long will it take for property values to double? (round your answer to 1 decimal place.)
it will take approximately 7.7 years for property values to double with a 9 percent annual increase.
To determine how long it will take for property values to double with an annual increase of 9 percent, we can use the concept of the compound interest formula. In this case, the property values are growing exponentially over time.
The formula to calculate the doubling time is:
t = (log(2) / log(1 + r))
Where:
t = time (in years)
r = annual growth rate as a decimal (9 percent = 0.09)
Plugging in the values into the formula, we can find the time it takes for property values to double:
t = (log(2) / log(1 + 0.09))
Calculating this, we find:
t ≈ 7.69 years
Therefore, it will take approximately 7.7 years for property values to double with a 9 percent annual increase.
Learn more about compound interest here
https://brainly.com/question/14295570
#SPJ4
The table below shows data from a survey about the amount of time students spend doing homework each week. The students were in either college or high school:
Which of the choices below best describes how to measure the spread of these data?
(Hint: Use the minimum and maximum values to check for outliers.)
Both spreads are best described by the IQR.
Both spreads are best described by the standard deviation.
The college spread is best described by the IQR. The high school spread is best described by the standard deviation.
The college spread is best described by the standard deviation. The high school spread is best described by the IQR
5x+36
HEPPP MEEE PLEASEEE
Answer:
180
Step-by-step explanation:
5×+36 is 180
hope this helps !!?
Answer:
x = 7.2
Step-by-step explanation:
First we write down the equation
5x + 36
In order to find what x equals we will need to isolate the variable. To do this we divide the variable by 5.
This gets us...
x = 7.2
Sorry if you didn't need to find what x equaled.
Can someone plz help me? :(
Unit cubes are placed on a pan balance. There are 3 cubes on one pan and 9 cubes on the other pan. What can you do to make the pans balance?
Answer:
You know 9+3=12 , So Even it out 6 on 1 pan and 6 on the other it will balance.
Please help quick!!! Jamie purchased a DVD that was on sale for 15% off. The sales tax in her county is 5%. Let y represent the original price of the DVD. Write an expression that can be used to determine the final cost of the DVD.
y − 0.15y
0.05(0.85y)
y − 0.85y + 0.05y
1.05(0.85y)
Help i dont get this one ASAP
The number of ways is 1 billion.
We are asked to determine the possible number of ways of the social security number that is 9 digits if the numbers can be repeated.
In this case, using fundamental counting, there are 10 possible numbers in each digit that is from zero to nine.
Thus, the number of ways is 10*10*10*10*10*10*10*10*10 equal to 1 billion ways.
Hence the number of ways is 1 billion.
Learn more about fundamental counting click;
https://brainly.com/question/28384306
#SPJ1
which situation could be modeled by the expression 3/4 ÷ 2 1/4?
Answer:
\(\frac{1}{3}\)
Step-by-step explanation:
The range of a linear transformation defined by the matrix transformation t(x)= ax is equal to the column space of matrix a (col a).
true or false
True, The range of a linear transformation defined by the matrix transformation t(x) = Ax is equal to the column space of matrix A.
The range of a linear transformation defined by the matrix transformation t(x) = ax is equal to the column space of matrix A (col A).
The range of a linear transformation is the set of all possible output values. In this case, the matrix A represents the transformation, and the column space of matrix A represents the span of the columns of A. The column space of matrix A is the set of all possible linear combinations of the columns of A.
To prove that the range of the linear transformation t(x) = Ax is equal to the column space of matrix A, we can show that every vector in the column space of A can be obtained as an output of the transformation t(x) = Ax. Additionally, we can show that every output of the transformation t(x) = Ax belongs to the column space of A.
Therefore, it is true that the range of a linear transformation defined by the matrix transformation t(x) = Ax is equal to the column space of matrix A.
To know more about linear transformation visit:
https://brainly.com/question/31142199
#SPJ11
HELPPPPPPPPPPP NOW PLSSSS K12
Answer:
2
Step-by-step explanation:
Subtract -7--5=-2, there can not be a length on a rectangle of -2 so it would just be 2.
Answer:
2
Step-by-step explanation:
Which of the following reasons can be used to justify statement #3 in the proof?
A Given
B the vertical angel theorem
C the reflexive property of congruence
D SSS
c because it is accuet.
hope it helps
Option C . The reflexive property of congruence is the correct reason that can justify statement 3 . BD≅BD
What is the reflexive property of congruence?The reflexive property of congruence states that every side, every angle, every line segment and every shape is congruent to itself.
To prove that ΔABD is congruent to ΔCBD where given that
1.Line segment AB ≅ Line segment CB (Given)
2. Then we can write AD ≅CD ; Given : D is the mid point of AC
3. line segment BD ≅ Line segment BD , this is true by reflexive property of congruence which states that every line segment or side is congruent to itself.
BD can be considered as side of both the given triangles
Therefore, the reason that can justify statement 3 is option C.
Also, Learn more about the properties of congruence from the link below:
https://brainly.com/question/2039214
#SPJ5
Jennifer and Jane are best friends. They placed a map of their town on a coordinate grid and found the point at which each of their house lies. If Jennifer’s house lies at (9, 7) and Jane’s house is at (15, 9) and they wanted to meet in the middle, what are the coordinates of the place they should meet?
The coordinates of the place that Jennifer and Jane should meet is (\(\frac{24}{2} \frac{16}{2}\)). Check more about coordinates below?
What is the coordinates about?Based on the fact that:
Jennifer’s house lies at (9, 7),
Jane’s house lies at (15, 9) ,
Therefore, the equation will be:
(9, 7) = (x₁, y₁)
(15, 9) = (x₂, y₂)
P= (\(\frac{x₁ + x₂ }{2} \frac{y₁ + y₂}{2}\))
P= \(\frac{9+ 15 }{2} \frac{7 + 9}{2}\)
Therefore, P= 24/2, 16/2.
Learn more about coordinates from
https://brainly.com/question/17206319
#SPJ2
Find the sum or the difference.305 + 84
To find the sum of 305 and 84, proceed as follows:
The answer is 389.
what is the difference between m∠A and ∠A?
thank you so much!!
Answer:
The measure of an angle is a numerical value. <A just refers to the angle itself.
Step-by-step explanation:
Write the equation in standard form for the circle with center (2, -8) and radius 7.
The Equation of circle is (x-2)² +(y+ 8)² = 7²
The standard form of a circle with center (h, k) and radius r is given by the equation:
(x-h)² + (y-k)² = r²
In this equation, (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle.
In this case, the center of the circle is (2, -8) and the radius is 7.
Plugging these values into the equation, we have:
(x- 2)² + (y- (-8))² = 7²
Simplifying further:
(x-2)² +(y+ 8)² = 7²
So, the equation in standard form for the circle with center (2, -8) and radius 7 is:
(x-2)² +(y+ 8)² = 7²
Learn more about Equation of circle here:
https://brainly.com/question/29104982
#SPJ1
0/1 Hannah went to the store and spent $14. 69 on a book, $20. 99 on a shirt, and $5. 99 on a pack of pencils. If she paid with a $50 bill, what would be her change? Do not use a calculator. Don't forget a Dollar Sign $!
Answer:
$8.33
Step-by-step explanation:
$14.69 50.00
+ $20.99 - 41.67
=35.68 = $8.33
+5.99
=$41.67
The number of members in an organization, M, changes as a function of t months. In which situation is M a linear function of t?
The membership doubles every year from the previous year.
1.The membership doubles every year from the previous year.
2.The membership increases by 1% every month from the previous month.
3.The membership decreases by 20 members every month from the previous month.
4.The membership increases by 50 members in each of the six warmest months and decreases by 50 members in each of the other six months.The membership doubles every year from the previous year.
Answer: D. The membership increases by 50 members in each of the six warmest months and decreases by 50 members in each of the other six months.
Step-by-step explanation: Because it is a linear function it needs to fluctuate so by using process of elimination D is the only answer that would look like a linear function by having that curved line we are looking for in a function.
Given: m + 1/m=3 Determine the value of: m² - 1+ 1/m^2
The value of m² - 1 + 1/m² is 5, given that m + 1/m = 3.
What are some examples of quadratic equations?In mathematics, a quadratic equation is one with degree 2, which means that its maximum exponent is 2. A quadratic has the standard form y = ax2 + bx + c, where a, b, and c are all numbers and a cannot be zero. All of these are examples of quadratic equations: y = x2 + 3x + 1.
The equation m + 1/m = 3 must first be changed in order to solve for m2 - 1 + 1/m2.
When we multiply both sides by m, we obtain:
m² + 1 = 3m
Rearranging gives us:
m² - 3m + 1 = 0
We can find m using the quadratic formula:
m = (3 ± sqrt(5))/2
When we enter these values into m2 - 1 + 1/m2, we obtain:
((3 + sqrt(5))/2) = m2 - 1 + 1/m2² - 1 + (2/(3 + sqrt(5)))²
If we condense this phrase, we get:
m² - 1 + 1/m² = 5
Learn more about Quadratic equation here:
brainly.com/question/30098550
#SPJ9
Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation.
If y varies as directly as the square of x, and y = 75/8 when x = 5, find y when x= 2
Answer:y=15/4
Step-by-step explanation:
start with general form y = kx. substitute in the pair of values you know for x and y.
75/8 = k(5) multiply both sides by 1/5 to solve for k, getting
15/8 = k
So your equation is y = (15/8)x substitute 2 for x to find your new y.
y = (15/8)2
y = 15/4
In the right triangle below, tanA = 0.45. What is the approximate length of AB?
Right triangle A B C is shown. Side B C has a length of 9. Angle C is the right angle.
10 units
13 units
20 units
22 units
Answer:
The correct answer is 10 units.
To solve this problem, you can use the tangent function, which relates the ratio of the opposite side and the adjacent side of a right triangle.
In this case, the opposite side is 9 units, and the tangent of angle A is 0.45.
Thus, the adjacent side (AB) is equal to 9/0.45, which is equal to 10 units.
Step-by-step explanation:
Identify the given values of the right triangle: the opposite side is 9 units and the tangent of angle A is 0.45.
Use the tangent function to calculate the adjacent side length: adjacent side = opposite side ÷ tangent(angle A)
Substitute the given values into the equation: adjacent side = 9 ÷ 0.45
Solve for the adjacent side length: adjacent side = 10 units Therefore, the approximate length of AB is 10 units.
Answer:
22
Step-by-step explanation:
Solve the inequality 2x-8 ≤ 14 and graph its solutions on the number line.
Answer:
Step-by-step explanation:
2x-8 ≤ 14
1. Add 8 to both sides of the inequality sign to move the 8 from the left side to the right side.
2x ≤ 22
2. Divide both sides by 2 to get the x alone.
x ≤ 11
3. Make a number line from 8 to 13 (numbers can be changed), draw a circle above the number 11 and fill in the circle.
4. Now, make a line going from the circle to the left and draw an arrow at the end.
The numerator of fraction is 1 less then its denominator if the numerator is increased by 5 the new fraction becomes equivalent to 4/5 what is the original factor?
Answer:
4/5
Step-by-step explanation:
the numerator of fraction is 1 less than its denominator. If the numerator is increased by 4 and the denominator is increased by 5, the new fraction becomes equivalent to 4/5. what is the original fraction?
Let n = numerator
d = denominator
n = d - 1
\(\frac{d - 1}{d}\)
\(\frac{d - 1 + 4}{d + 5}\) = \(\frac{4}{5}\)
\(\frac{d + 3}{d+ 5}\) = \(\frac{4}{5}\)
cross multiply
5(d + 3) = 4(d + 5)
5d + 15 = 4d + 20
d = 5
n = d - 1
5 - 1 = 4
original fraction 4/5