The money he will have in this account if he keeps it for 5 years is $333, if the interest rate is compounded semiannually.
What is meant by compound interest?Compound interest is the term used to describe interest on savings that is calculated using both the initial principal and interest that has accrued over time. You can earn interest on interest, which is known as compound interest. Mathematically, if you have $100 and it earns 5% interest annually, you will have $105 at the end of the first year. You will have $110.25 by the conclusion of the second year.
Given,
P=$300
Time t=5 years
Interest rate=2.1%
Hence, the amount will have in his account is:
=[tex]P(1+(10/2000)^{2t}[/tex]
Here, the interest is compounded semiannually.
=[tex]300(1+(2.1/200))^{10}[/tex]
=$333
Therefore, the money he will have in this account if he keeps it for 5 years is $333, if the interest rate is compounded semiannually.
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Please help! It’s really hard
Flying against the wind an airplane travels 7360 kilometers in 8 hours. Flying with the wind the same plane travels 6100 kilometers in 5 hours what is the rate of the plane in still air and what is the rate of the wind
If x = 2 and y = –1, what is the difference between 1 + 2x + 5y2 and 4x + 3y?
Answer:
55
Step-by-step explanation:
if you do the calculations it is 55*5=uy66
you have 40 stickers. Eight of the stickers glow in the dark. what fraction of stickers, in fifths, do not glow in the dark
Answer:
4/5
Step-by-step explanation:
8/40 is 1/5
Therefore 1/5 DO glow in the dark.
5/5 minus 1/5 is 4/5
4/5 of the stickers don’t glow in the dark.
select every definite integral below that can be evaluated using the fundamental theorem of calculus (there may be more than one).
The basic theorem of calculus states that the function must be differentiable throughout the specified limit interval. So all options are correct.
In the given question, we have to select every definite integral below that can be evaluated using the fundamental theorem of calculus (there may be more than one).
The given integrals are:
[tex]\int_{-\pi}^{\pi}sin^7(4x)cos^8(3x)dx[/tex][tex]\int_{-5}^{12}(x\text{In}x+2x-1)dx[/tex][tex]\int_{0}^{4}(12x^{16}-5x^{11}+81x^{8}-208432x^{2}+x-2)dx[/tex][tex]\int_{-1}^{1}\frac{1}{x}dx[/tex][tex]\int_{1}^{9}|x|dx[/tex]As we know that,
A definite integral is a formal estimate of the area beneath a function. Integrals can reflect a region's (signed) area, the total value of a function that changes over time, or the amount of a given thing given its density.
The basic theorem of calculus states that the function must be differentiable throughout the specified limit interval.
Within the specified limit interval, the integral in the supplied option is differentiable.
Therefore, each choice is valid.
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the questions in this activity refer back to prelab 0, which would be a good place to look if you need any help. in test a, suppose you make 100 experimental measurements of some quantity and then calculate mean, standard deviation, and standard error of the numbers you obtain. in test b, suppose you make 400 experimental measurements of the same quantity and you again calculate mean, standard deviation, and standard error.
1) Which of the following statements is the most likely description of the comparison of the standard deviations found in Test A and Test B? o The standard deviations found in Test A and Test B will be about the same. o The standard deviation found in Test A will about be twice as big as the standard deviation found in Test B. o The standard deviation found in Test A will about be four times as big as the standard deviation found in Test B. o The standard deviation found in Test B will about be twice as big as the standard deviation found in Test A. o The standard deviation found in Test B will about be four times as big as the standard deviation found in Test A. Submit 2) Which of the following statements is the most likely description of the comparison of the standard errors found in Test A and Test B? o The standard errors found in Test A and Test B will be about the same. o The standard error found in Test A will about be twice as big as the standard error found in Test B. o The standard error found in Test A will about be four times as big as the standard error found in Test B. o The standard error found in Test B will about be twice as big as the standard error found in Test A. o The standard error found in Test B will about be four times as big as the standard error found in Test A. Submit 3) This question and the next one refer to a hypothetical experiment in which you slide red and green blocks down an identical ramp to see how far they go before stopping. After doing three trials of each case you find that the best estimate of the distance slid by red blocks is 15 + 3 feet and that the best estimate of the distance slid by green blocks is 25 + 4 feet. Find the t' parameter for the comparison of the distance slid by red and green blocks. o t' = 2.0 o t' = 2.5 o t' = 3.0 o t' = 3.5 o t' = 4.0 Submit 4) Suppose the experiments described in Question 3 are testing the claim that the distance slid by a block does not depend on the color of the block. Which of the following conclusions regarding this claim is most consistent with your data? o The claim is true. o The claim is false. o The claim might be true or it might be false.
The value of the standard deviation does not change and remains the same.
Given, a retired statistic professor has recorded final exam results for decades. the mean final exam score for the population of a student is 82.4 with a standard deviation of 6.5.
The mean μ = 82.4
The standard deviation σ = √[ ((x - μ)2 + (y - μ)2 + (z - μ)2)/3 ]
we have to find the variance,
We now add a constant k to each data value and calculate the new mean μ'.
μ' = ((x + k) + (y + k) + (z + k)) / 3 = (x + y + z) / 3 + 3k/3 = μ + k
We now calculate the new mean standard deviation σ'.
σ' = √[ ((x + k - μ')2 +(y + k - μ')2+(z + k - μ')2)/3 ]
Note that x + k - μ' = x + k - μ - k = x - μ
also y + k - μ' = y + k - μ - k = y - μ and z + k - μ' = z + k - μ - k = z - μ
Therefore σ' = √[ ((x - μ)2 +(y - μ)2+(z - μ)2)/3 ] = σ
If we add the same constant k to all data values included in a data set, we obtain a new data set whose mean is the mean of the original data set PLUS k. The standard deviation does not change.
Hence, the standard deviation does not change.
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In the figure shown, the measures of all angles are equal, and AB = EF.
I need help with this please help me
the answer is B because it is congruent and since AB=EF it's also B
PLEASE HELP I WILL DO ANYTHING
Find the constant of proportionality for the proportional relationship shown on the graph.
graph of a line going through 0 comma 0 and one half comma 8
p = 0.5
p = 0.625
p = 16
p = 8
The proportionality constant of the given graph is k = 16.
How to find the proportionality constant of a graph?The proportionality constant of a graph is the ratio of the y-coordinates to the x-coordinates.
Thus, it is written as k = y1/x1 = x2/y2 = ... = yn/xn
Calculation:The given graph has the coordinates as
x = 0; y = 0 i.e., (0, 0)
x = 0.5; y = 8 i.e., (0.5, 8)
x = 1; y = 16 i.e., (1, 16)
x = 1.5; y = 24 i.e., (1.5, 24)
and so on.
Then, the ratio of y - coordinate to the x - coordinate is
k = 8/0.5 = 16
or
k = 16/1 = 16
or
k = 24/1.5 = 16
and so on.
So, the proportionality constant for the given graph is k = 16.
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if a researcher offers beer drinkers an extra incentive to recruit their friends who also drink beer to participate in the study, s/he is using a(n) sample.
If a researcher offers beer drinkers an extra incentive to recruit their friends who also drink beer to participate in the study, s/he is using a(n) snowball sample.
What is snowball sampling?
Snowball sampling is a nonprobability sampling technique used in sociology and statistics research where current study participants recruit future study participants from among their acquaintances.
Thus, it can be said that the sample group is expanding like a snowball.
A non-probability sampling technique called "snowball sampling" enlists current research participants to assist in the recruitment of future study participants.
For instance, a researcher looking to understand leadership styles might ask people to list other influential people in their neighborhood.
Hence, if a researcher offers beer drinkers an extra incentive to recruit their friends who also drink beer to participate in the study, s/he is using a(n) snowball sample.
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(True or False) the correlation coefficient is based on each observation's values' deviations from the mean for both variables.
The correlation coefficient mostly based on all the observation's values' with the deviations from about the mean for both variables. So, it's true.
A correlation coefficient is a statistical degree of the diploma to which modifications to the cost of 1 variable are expecting extrade to the cost of another. In definitely correlated variables, the cost will increase or decreases in tandem. A correlation coefficient is a variety of among -1 and 1 that tells you the electricity and path of a courting among variables.
In different words, it displays how comparable the measurements of or greater variables are throughout a dataset. Both quantify the path and electricity of the connection among numeric variables. When the correlation (r) is negative, the regression slope (b) might be negative. When the correlation is positive, the regression slope might be positive.
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-9/7 greater than -11/8
To compare two fractions, we need to find a common denominator and then compare the fractions using the numerators. In this case, we can find a common denominator by finding the least common multiple (LCM) of 7 and 8. The LCM of 7 and 8 is 56.
We can then rewrite both fractions using a denominator of 56:
-9/7 = -36/28
-11/8 = -44/28
Now we can compare the fractions using their numerators:
-36/28 < -44/28
Therefore, -9/7 is less than -11/8.
Why does it have the name "denominator"?The Latin word "nomen" (which also appears in words like "nominate" and "nomenclature"), which meaning "name," is the root of the word "denominator." And that is essentially what the denominator of a fraction does: it "names" or specifies the kind of fraction that is specified by the numerator (the top part).
The denominator formula is what?The numerator of a fraction, which determines how many parts are being taken into account, is equal to the number of equal parts that make up the total. You can think of a fraction as being composed of p parts, which is the numerator of an item, and q equal parts, which is the denominator.
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Find the derivative using the Fundamental Theorem of Calculus, part 1, which states that if f(x) is continuous over an interval [a, b], and the function F(X) is defined by F(X) - F'(x) = f(x) over [a, b]. [*re) or, then del tot Additional Materials eBook 4.
then Find the derivative using the Fundamental Theorem of Calculus, part 1, which states that if f(x) is continuous over an interval (a, b), and the function F(x) is defined by F(X) - F'(x) = f(x) over [a, b]. de la intu In(u) du 6.
Evaluate the definite integral using the Fundamental Theorem of Calculus, part 2, which states that iffis continuous over the interval [a, b] and F(x) is any antiderivative of f(x), then Giºrno dx = F(b) – Fla). [x?- ») 3x) dx Х
On solving the question, by the help of, Fundamental Theorem of Calculus, we got answer [tex]3xe^x[/tex]
What is fundamental Theorem of Calculus?A theorem that connects the ideas of differentiating a function from integrating a function is known as the fundamental theorem of calculus. The two processes are inverses of one another, with the exception of a constant number that is dependent on the starting point for computing area.
When asked to compute the derivative of an integral, utilize the calculus fundamental theorem rather than evaluating the integral.
FTOC informs us that:
[tex]\frac{d}{dx} [\int\limits^{3x}_t {3lnt} \, dxt] = 3xe^x[/tex]
(That is, the integral's derivative returns the original function to us.)
We are required to locate:
h'(x) where h(x)= [tex]\int\limits^{3x}_t {3lnt} \, dxt= 3xe^x[/tex]
what we want
[tex]h'(x) = \frac{d}{dx} [\int\limits^{ex}_t {3lnt} \, dxt] = 3xe^x.............................A[/tex]
(Note that the first integral's upper limits are not in the proper format for the FTOC to be applied immediately.) The chain rule and a replacement can be used to alter the definite integral. Let:
[tex]u = e^x = \frac{du}{dx} = e^x[/tex]
Using the chain rule and substituting into the integral [A], we obtain:
[tex]\frac{d}{dx} [\int\limits^{ex}_t {3lnt} \, dxt] =[/tex][tex]\frac{d}{dx} [\int\limits^{u}_t {3lnt} \, dxt] = 3xe^x[/tex]
= [tex]e^x \frac{d}{du} [\int\limits^{ex}_t {3lnt} \, dxt] = 3xe^x[/tex]
now we got answer - [tex]3xe^x[/tex]
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Suppose that 14 inches of wire costs 84 cents. At the same rate, how many inches of wire can be bought for 42 cents
Find the distance between the two points rounding to the nearest tenth (if necessary). (1,−6) and (−8,−4)
[tex]~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{1}~,~\stackrel{y_1}{-6})\qquad (\stackrel{x_2}{-8}~,~\stackrel{y_2}{-4})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{(~~-8 - 1~~)^2 + (~~-4 - (-6)~~)^2} \implies d=\sqrt{(-8 -1)^2 + (-4 +6)^2} \\\\\\ d=\sqrt{( -9 )^2 + ( 2 )^2} \implies d=\sqrt{ 81 + 4 } \implies d=\sqrt{ 85 }\implies d\approx 9.2[/tex]
Solomon has taken two tests each out of ten. his average score is 18. if the product of his scores is 56. what did he score in each test ?
The scores of both test Solomon took are 14 for the first test and 4 for the second test.
How to calculate the score of bother test?let a represent the first score and b represent the second score.
since the average score is 18, you get (a + b) / 2 = 18
multiply both sides of this equation by 2 to get a + b = 36
the product of her scores is 56 means that a × b = 56.
you have 2 equations that need to be solved simultaneously.
they are a + b = 36 and a × b = 56
solve for a in the second equation to get a = 56 / b.
replace a with 56/ b in the first equation to get 56/ b + b = 18
multiply both sides of this equation by b to get 56 + b^2 = 18b
subtract 14b from both sides of this equation and arrange the terms in descending order of degree to get b^2 - 18b + 56 = 0
Factorise the quadratic equation to get the following:
(b-4 ) ( b - 14) = 0
Solve for b to get b = 4 and b = 14
Therefore, the product of the of the two scores:
= 14×4 = 56. This means that he scored 14 in first test and 4 in the second test.
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Simplify :
- [ 4 - 3 (-2 + 5) ^2]
The simplified value of the expression is 23
What is an expression?
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a complete sentence. Any one of the following mathematical operations can be used. A sentence has the following structure: Number/variable, Math Operator, Number/Variable is an expression.
To find the value:
- [ 4 - 3 (-2 + 5)²]
= - [ 4 - 3 (3)²]
= - [ 4 - 3*9]
= - [ 4 - 27]
= - [ -23]
= 23
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Karen makes 5 dollars per hour babysitting and 12 dollars per hour giving music lessons. One weekend, she worked a total of 18 hours and made 139 dollars. How many hours did she babysit that weekend
Answer:
15.06
Step-by-step explanation:
Substituting this value into the first equation gives us b + 2.94 = 18, so b = 15.06 hours. Since Karen can only work whole hours, she must have worked 15 hours babysitting and 3 hours giving music lessons.
An employee in the 12% tax bracket
invests $1000.00 in a Roth IRA. When the
employee retires, her salary is in the 22%
tax bracket. What tax will be assessed on
the initial investment at retirement?
A. Since the employee used a Roth IRA, she will pay no taxes on her
investment at retirement.
B. Not enough information to answer
C. $120.00
D. $220.00
A. Since the employee used a Roth IRA, she will pay no taxes on her investment at retirement.
The Roth IRA is a type of individual retirement account (IRA) that allows the investor to contribute after-tax money to the account. This means that the investor pays taxes on the contributions upfront, but the investment grows tax-free and can be withdrawn tax-free at retirement. Therefore, the employee in this scenario will not have to pay any taxes on her initial investment of $1000.00 at retirement, regardless of her tax bracket at that time.
HELP!!!!!! 40 POINTS!!!!
Knowing that correlation coefficients have values between -1 and 1 and that the closer the value is to -1 or 1, the stronger the correlation -- which of the following correlation coefficients would represent the strongest correlation?
A. -0.5
B. 0.02
C. -0.97
D. 0.87
The strongest correlation is represented by -0.97. It can be find out using knowledge of correlation coefficients.
What is the correlation coefficient between 1 and -1?
The formula returns a value between 1 and -1 :
where 1 indicates a strong positive relationship and -1 indicates a strong negative relationship.
According to the rule of correlation coefficients , the strongest correlation is considered when the value is closet to either (+1) or (-1).
So, in given options -0.97 is closet to (-1).
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assume a small rectangular-shaped gully is two meters deep, four meters wide, and 50 meters long. calculate the metric tons of soil lost during its formation. assume the bulk density of this soil is 1.48 mg/m3. one metric ton is equal to 1000 kilograms or 2204.6 pounds. show your work
Metric tons of soil lost during its formation [tex]2.96*10^-7[/tex]
Gully is 2 meter deep 4 meter wide and 50 meters long.
So we know if Gully length = l width =w height =h
then volume of gully is l*b*h.
by same way volume of gully is 50*4*2 = 200 [tex]m^3[/tex]
Bulk density of this soil is 1.48 mg/m^3.
How many metric tons of soil lost during its formation?
1000kg = 1 metric ton.
density = 1.48mg/m^3 = [tex]1.48*10^-6[/tex] kg/m^3
means for 1 m^3 volume we lost [tex]1.48*10^-6[/tex] kg of soil.
for 200m^3 volume we lost [tex]200*1.48*10^-6[/tex] kg of soil.
[tex]296*10^-6[/tex] kg of soil.
to convert kg into metric ton we have to divide 1000.
[tex]296*10^-6[/tex]/1000 = [tex]296*10^-9[/tex] = [tex]2.96*10^-7[/tex]
So Metric tons of soil lost during its formation [tex]2.96*10^-7[/tex]
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The inclusion of seasonal dummy variables to a multiple regression model may help eliminate autocorrelation if the data are characterized by seasonal fluctuations. A. perfect multicollinearity. B. bias in OLS slope estimates caused by autocorrelation. C. near multicollinearity. D. All of the options are correct.
The correct option among the given is option B , bias in OLS slope estimates caused by autocorrelation.
In the presence of autocorrelation, as in the case of heteroscedasticity, the OLS estimators are still linearly unbiased, consistent, and asymptotically normally distributed, but they are no longer efficient (i.e., minimum variance).
A dummy variable is a binary variable with a value of either 0 or 1. Such variables are added to a regression model to represent binary factors, which are either observed or not observed.
A dummy variable can be used to indicate whether a data point possesses a specific property. A dummy variable, for example, can be used to indicate whether a car engine is 'Standard' or 'Turbo.' Or whether a participant in a drug trial is in the placebo or treatment groups.
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ind the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 4x3, y = 4x, x20; about the x-axis
The Volume of the solid formed by the curves y = 4x³ , y = 4x, x ≥ 0 ; about the x axis is 64π/21 .
In the question ,
it is given that ,
the given curves are y = 4x³ , y = 4x, x ≥ 0 ,
we have to find the volume about x axis ,
the region formed by the given curves about x axis is shown below in the figure .
So , the Volume of the required region is
V = [tex]\int\limits^1_0 {\pi [(4x)^{2} - (4x^{3} )^{2} }] \, dx[/tex]
On simplification ,
we get ,
V = [tex]\pi \int\limits^1_0 { [16x^{2} - 16x^{6} }] \, dx[/tex]
V = π[ x³/3 - x⁷/7 ]¹₀
= 16π( 1/3 - 1/7 - 0 - 0)
= 16π((7 - 3)/21)
= 64π/21
Therefore , the required Volume is 64π/21 .
The given question is incomplete , the complete question is
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 4x³ , y = 4x, x ≥ 0 ; about the x-axis .
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A can of beans has surface area 366 cm?. Its height is 10 cm. What is the radius of the circular top?
The radius of circular top will be 4.125cm. It can be find out using formula for surface area of cylinder.
What is the surface area?
The surface area of a solid object is a measure of total area that the surface of the object occupy.
The surface area of a cylinder is 2*pi*r^2 + 2*pi*r*h.
where pi = 3.14 , r = radius , h = height.
In the statement we are given that surface area = 366cm^2.
And height ,h = 10cm
So, putting values in above formula we get,
366 = 2*3.14*r^2 + 2*3.14*r*10
366 = 2*3.14 (r^2 + r*10)
366/6.28 = r^2 + 10r
r^2 + 10r - 58.28 = 0
i.e. quadratic equation of form ax^2 + bx + c = 0
where a = 1, b = 10 , c = -58.28
And solution for this equation = (-b ±√b²-4ac)÷2a
by reducing this equation using above values
we get r = 4.125cm.
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Which number sentence is true?
A.
B.
C.
D.
Answer:
you forgot the sentences dude
When finding f(g(x)) what do you need to know about the domains and ranges
of f(x) and g(x)? Explain
All x-values that are within the scope of both f and g make up the domain of the (f g)(x).
How can the domain of f/g)(x be determined?All x-values that are within the scope of both f and g make up the domain of the (f g)(x). In this case, f has a domain of "x | x 0" and g has a domain of "all real numbers," thus (f g)(x) also has a domain of "x | x 0" since these values of x fall within both f and g's domains.Utilizing graphs is another method for determining the domain and range of functions. The collection of possible input values is referred to as the domain, and the domain of a graph is made up of all the input values displayed on the x-axis. The collection of potential output values that make up the range is represented by the y-axis.To learn more about Domain refer to:
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Domain and Range of Functions with Examples, Problems, and Solutions
The function is f(x)=2x
The domain is {1,2,3}
Then the range will be {2,4,6}
Given that,
We have to find what is domain and range of the function.
We know that,
The components of a function are its domain and range. The domain of a function is the set of all possible input values, whereas the range of a function is its potential output. Range, Domain, and Function. A is the domain and B is the co-domain if a function f: A⇒ B exists that maps every element of A to an element in B. The representation of an element 'a' under a relation R is given by 'b', where (a,b) R. The range of the function is the set of photos. In general, a function's domain and range are denoted as follows: Range(f) = {f(x): x ∈domain(f)} and domain(f) = {f(x): x ∈R}
So,
The function is f(x)=2x
The domain is {1,2,3}
Then the range will be {2,4,6}
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Find the measures of HAB and CAB
Answer:
<HAB = 48° and <CAB = 72°
Step-by-step explanation:
Looking at the graph these two angles (<FAD = 20° and <DAH = ?) are complementary which means those two angles add up to 90°
Solve for <DAH.
<FAD = 20° + <DAH = ? = 90
Subtract <FAD = 20° to both sides leaving <DAH = ?
<DAH = 70°
Now that we have that angle we can solve for measured angles <HAB and <CAB. These three angles add up to 180°
<DAH + <HAB + <CAB = 180
Plug in our variables.
70° + 2x + 3x = 180°
Solve our x.
(2x + 3x) = 180° - 70°
5x = 120°
x = 24°
Now substitute x into the x to have our measured angle <HAB and <CAB.
<HAB = 2x = 2*24° = 48°
<HAB = 48°
<CAB = 3x = 3*24 = 72°
<CAB = 72°
How do you regroup 4 digit numbers?
We take carry 1 if there is more then 9 when we are adding or subtracting in the regrouping 4 digit number.
Given that,
We have to find how do we regroup 4 digit numbers.
We know that,
When performing operations like subtraction and addition, regrouping is accomplished by creating groups of tens. Regrouping refers to rearranging integers into place value-based groupings to facilitate operations. Because you must rearrange the numbers into place value to complete the procedure, it is known as regrouping.
Addition with regrouping or addition with carryover refers to additions where the addends' digit sums exceed 9 in any of the columns. Finding the digit sum of two integers requires regrouping. Only the units place digit of the total is then written in the appropriate column.
(1) (1)
3 1 9 5
+ 6 2 3 7
--------------------
9 4 3 2
Therefore, We take carry 1 if there is more then 9 when we are adding or subtracting in the regrouping 4 digit number.
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Help me please Ahaheinendjdn
suppose the cost of a car produced in the united states is $20,000. the current exchange rate is us$1= €0.85. What is the cost of the car in euros?
The cost of the car in euros is 17,000 euros
Given that,
Let's say an automobile made in the United States costs $20,000. At this time, one US dollar is worth 0.85 euros. A automobile made in the United States costs $20,000 to construct.
To find : that the car's price in euros ?
The information provided lets us know that,
The car's price in euros= 20,000 * 0.85
= 17,000 euros
Therefore, the car's price in euros is 17,000 euros.
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