Answer:
$ 263.42
Step-by-step explanation:
-275.78 + 539.20 = 263.42
The new balance in Mr. smith account will be $263.42.
What is a expression? What is a mathematical equation?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.We have Mr. Smith has an account balance of -$275.78. He deposits $539.20 into his account.
Assume that the new amount in his account will be [x]. Then -
[x] = 539.20 - 275.78
[x] = 263.42
Therefore, the new balance in Mr. smith account will be $263.42.
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At age 23, someone sets up an IRA (individual retirement account) with an APR of 7%. At the end of each month he deposits $75 in the account. How much will the IRA contain when he retires at age 65? Compare that amount to the total deposits made over the time period.
Answer:
The ira will contain $228,278.05 when he retires at age 65. This is 6.04 times the amount of money he deposited.
Step-by-step explanation:
In order to solve this problem, we can make use of the following formula:
\(FV=PMT[\frac{(1+i)^{n}-1}{i}]\)
Where:
FV= Future value of the ira
PMT= the amount of money you deposit each month
i= is the interest rate per period
n=number of periods
in this case we will assume the interest will be compounded each month.
So:
FV this is what we need to know.
PMT= $75 the amount he will deposit each month
t = 42 years,
this is 65-23=42
n=42 years * 12 months/year = 504 months
i=0.07/12
So we can now use the given formula:
\(FV=PMT[\frac{(1+i)^{n}-1}{i}]\)
\(FV=75[\frac{(1+\frac{0.07}{12})^{504}-1}{\frac{0.07}{12}}]\)
So we get:
FV=$228,278.05
which is the amount of money he will have after 42 years.
In total, he deposited:
$75*504months = $37,800
so he will have:
\(\frac{228,278.05}{37,800}=6.04\) times the amount of money he deposited throughout this time.
2. Which sequence could be generated by an exponential function? a) 4,7,12,19,... b) 5,9,13, 17,... c) 7, 14, 28,56,... d) 36, 24,4, -24, ...
Answer:
C
Step-by-step explanation:
It doubles after every number in the sequence
You want a 95% confidence interval for average pizza delivery time. A sample of 10 pizzas has an average delivery time of 34 minutes and a sample standard deviation of 5. 2 minutes. What t value do you use in your formula for the confidence interval?.
work out the volume of a hemisphere. please help i’ll give u brainliest if u help
Answer:
V = 1072.3 cm³
Step-by-step explanation:
Volume of a hemisphere = \(\frac{2}{3} \pi r^3\) [Because it's half of a sphere's volume]
V = \(\frac{2}{3} (3.14)(8)^3\)
V = \(\frac{2}{3} (3.14)(512)\)
V = \(\frac{3216.99}{3}\)
V = 1072.3 cm³
Which one of these relations are functions ?
Please helpppp fast
Answer:
the 4th and 6th one
Step-by-step explanation:
A function is when there are x- and y-values but each x value has only 1 y-value
Simple: If the x-value is repeated its not a function
Answer:
Step-by-step explanation:
1,2,3
If $a$ and $b$ are integers, such that $a\not= 0$ and $b\not= 0$ and $a^2$ and $b^2$ have at most two digits, what is the greatest possible difference between the squares of $a$ and $b?$
Answer:
80
Step-by-step explanation:
t is important to note that a square of any non-zero integer is positive, and therefore there is no advantage in using negative integers instead of positive integers to attain the greatest difference of squares. So we will not consider negative integers.
The greatest value of a^2 - b^2 occurs when a^2 is at its largest and b^2 is at its smallest.
The larger a, the larger a^2:
8 ^ 2 = 64
9 ^ 2 = 81
10 ^ 2= 100
Since a^2 can have at most two digits, a=10 is too large, and so a=9 is the largest integral value of a we can use.
Now, b^2 is at its smallest when b is closest to zero on the number line (the further b gets from zero, the larger its square becomes):
2 ^ 2 = 4
1 ^ 2 =1
0 ^ 2 = 0
Remember to go back to the original problem sometimes, to make sure you are taking everything into account. It states b doesn't =0, and therefore the b=1 is the closest b can get to zero as an integer. So, the greatest difference between b^2 and a^2 is when b=1 and a=9, giving the result:
a^2-b^2 =9^2-1^2 =81-1= 80.
So, 80 is your answer.
Scientists determined that Antarctica's average winter temperature was -34.44 degrees Celsius. The difference between this and Antarctica's highest recorded temperature was 49.44 degrees. What was Antarctica's highest recorded temperature? (7th grade work)
Answer:
Antarctica's highest recorded temperature was 15 degrees.
Step-by-step explanation:
I am going to say that Antarctica highest recorded temperature is x.
I suppose there is a small typing mistake.
It is that the difference between Antarctica highest recorded temperature and this is 49.44.
So we have that x - (-34.44) = 49.44 instead of -34.44 - x = 49.44, which would lead to a highest temperature way lower than the one recorded in this winter.
So
x - (-34.44) = 49.44
x + 34.44 = 49.44
x = 49.44 - 34.44
x = 15
Antarctica's highest recorded temperature was 15 degrees.
Answer:
15 degrees
Step-by-step explanation:
Solve the given differential equation by using an appropriate substitution. The DE is of the form
dy/dx = f(Ax + By + C).
dy/dx=sin(x+y)
The constant C added to the cosine of the sum of x and y gives the solution to the provided differential equation.
To solve the given differential equation dy/dx = sin(x+y) using an appropriate substitution, we can use the substitution u = x + y. Then, we have du/dx = 1 + dy/dx. Rearranging this equation, we get dy/dx = du/dx - 1. In Mathematics, a differential equation is an equation that contains one or more functions with its derivatives. The derivatives of the function define the rate of change of a function at a point. It is mainly used in fields such as physics, engineering, biology and so on. The primary purpose of the differential equation is the study of solutions that satisfy the equations and the properties of the solutions. Learn how to solve differential equations here.One of the easiest ways to solve the differential equation is by using explicit formulas. In this article, let us discuss the definition, types, methods to solve the differential equation, order and degree of the differential equation, ordinary differential equations with real-word examples and a solved problem.Substituting this into the original differential equation, we get:Learn More About Differential Equation: https://brainly.com/question/1164377
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I will give brainliest for correct answer!
Answer:
you forgot the question
Step-by-step explanation:
Answer:
where is the question? we need the question lol
Evaluate Dtdr(G(T)) Using The Chain Rule: R(T)=⟨Et,E5t,−1⟩,G(T)=2t−6 Dtdr(G(T))=Let R(T)=⟨T2,1−T,4t⟩. Calculate The Derivative Of R(T)⋅A(T) At T=4, Assuming That A(4)=⟨−8,−5,6⟩ And A′(4)=⟨8,−3,2⟩ Dtdr(T)⋅A(T)∣∣T=4=
In order to determine the value of Dtdr(G(T), we must first determine the derivative of R(T) with respect to T and then insert G(T) into the result of our calculation. If we know that R(T) = T2, 1T, 4t, and that G(T) = 2t6, then the value of Dtdr(G(T)) when assessed at T = 4 is -8, -2, 8.
In order to use the chain rule, we need to determine the derivative of R(T) with respect to T. This may be done by looking up the equation. When we take the derivative of each component, we get the following: dR(T)/dT = -2T, -1, and 4.
The next thing that we do is plug the formula G(T) = 2t6 into the derivative. We assess G(T) based on this value because T equals 4, which yields the following result: G(4) = 2(4)6 = 2.
Multiplying the derivative of R(T) with respect to T by G'(4), which is the derivative of G(T) with respect to T assessed at T = 4, allows us to determine Dtdr(G(T)). Since G(T) = 2t6, G'(T) = 2, and G'(4) = 2, we can conclude that G(T) = 2t6.
When the derivative of R(T) is multiplied by G'(4), the result is Dtdr(G(T)), which is equal to 2(4), -1, 4 * 2, which equals 8, -2, 8.
Because of this, the value of Dtdr(G(T)) when assessed at T = 4 is -8, -2, 8.
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Suppose that Uranus rotates on its axis once every 17. 2 hours. The equator lies on a circle with a radius of 15,881 miles. (a) Find the angular speed of a point on its equator in radians per day (24 hours). (b) Find the linear speed of a point on the equator in miles per day. Do not round any intermediate computations, and round your answer to the nearest whole number. (a) Angular speed: radians per day (b) Linear speed : miles per day
Rounding to the nearest whole number, the linear speed of a point on Uranus' equator is approximately 139,424 miles/day.
(a) To find the angular speed of a point on Uranus' equator, we need to convert the rotation period from hours to days and then calculate the angle rotated in one day.
In one day (24 hours), Uranus rotates:
24 hours ÷ 17.2 hours/rotation ≈ 1.3953 rotations
The angle rotated in one day is:
1.3953 rotations × 2π radians/rotation ≈ 8.7674 radians/day
So the angular speed of a point on Uranus' equator is approximately 8.7674 radians/day.
(b) To find the linear speed of a point on Uranus' equator, we can use the formula:
linear speed = radius × angular speed
where the radius is given as 15,881 miles and the angular speed is 8.7674 radians/day (from part (a)).
Substituting these values, we get:
linear speed = 15,881 miles × 8.7674 radians/day ≈ 139,424 miles/day
Rounding to the nearest whole number, the linear speed of a point on Uranus' equator is approximately 139,424 miles/day.
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What is the volume of the cargo area of the moving truck?
A. 696 cubic feet
B. 756 cubic feet
C. 824 cubic feet
D. 888 cubic feet
Answer:
888sq. ft
Step-by-step explanation:
Volume of a rectangular prism = length * width * height
For the given diagram
area of the truck = area of the bigger + area of smaller prism
area of the bigger prism = 6 * 9 * 16
area of the bigger prism = 864sq. ft
Area of smaller prism = 2 * 2 * 6
Area of smaller prism = 24 sq. ft
Area of the figure = 864 + 24
Area of the figure = 888sq. ft
The mean of the data set 5, 10, 2, 1 and x is 5. What is the value of x ?
1 point
A) 5
B) 7
C) 13
D) 18
Answer: b) 7
Step-by-step explanation:
mean = average of the data
\(mean = \frac{sum of all terms}{total number of terms}\)
\(5 = \frac{5+10+2+1+x}{5}\\ 25 = 18+x\\\\25 - 18 = x\\\\7= x\)
-25z+1+35z=10z+1 how mu
please help if you can, vv appreciated!!
Answer:
I believe 72
Step-by-step explanation:
what is integral of 1/square root of (a^2 - x^2)
For the given problem, the integral of \(\frac{1}{\sqrt{a^2-x^2}}\) is \($\sin^{-1}\frac{x}{a} + C$.\)
What is an 'integral' in mathematics?A mathematical notion that depicts the area under a curve or the accumulation of a quantity over an interval is known as an integral. Integrals are used in calculus to calculate the total amount of a quantity given its rate of change.
The process of locating an integral is known as integration. Finding an antiderivative (also known as an indefinite integral) of a function, which is a function whose derivative is the original function, is what integration is all about. The antiderivative of a function is not unique since it might differ by an integration constant.
For given problem,
\($\int \frac{1}{\sqrt{a^2-x^2}} dx$\)
Let \($x = a \sin\theta$\) , then \($dx = a \cos\theta d\theta$\)
\($= \int \frac{1}{\sqrt{a^2-a^2\sin^2\theta}} a\cos\theta d\theta$\)
\($= \int \frac{1}{\sqrt{a^2\cos^2\theta}} a\cos\theta d\theta$\)
\($= \int d\theta$\)
\($= \theta + C$\)
Substituting back for\($x = a\sin\theta$:\)
\($= \sin^{-1}\frac{x}{a} + C$\)
Therefore, the integral of \(\frac{1}{\sqrt{a^2-x^2}}\) is \($\sin^{-1}\frac{x}{a} + C$.\)
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PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPP
Answer:
L=74
W=77
Step-by-step explanation:
Answer:
L=74 and W=77
Step-by-step explanation:
first the area of a rectangle is length of breath
A=L X W
4514= L X 61
61L=4514
L=4514/61
L=74m
b. perimeter =2(L + W)
338=2*92+ 2W
338=184+2W
2W=338-184
2W=154
W=154/2
W=74
A random sample of elementary school children in New York state is to be selected to estimate the proportion p who have received a medical examination during the past year. A random sample of 200 elementary school children indicated that 18 of them had received a medical examination in the past year.a)Find point estimate for p and also construct a 95% confidence interval for p.b) Using the information from the above sample, find the minimum sample size needed to estimate the population proportion p with 99% confidence. The estimate must be accurate to within .02 of p.
The minimum sample size needed to estimate the population proportion p with 99% confidence is 1359.
What is Random sample?
In statistics, a simple random sample is a subset of people chosen at random from a larger group, all of whom were chosen with the same probability. It is a procedure for randomly choosing a sample.
What is proportion?
A proportion is an equation that sets two ratios at the same value.
Given that;
p=18/200
95% means using 1.96
So, point estimate for p is ;
18/200+1.96*sqrt(18*182/200^3)
18/200-1.96*sqrt(18*182/200^3), 18/200+1.96*sqrt(18*182/200^3)
{0.0503372, 0.129663}
Using MoE equation:
.02=2.576*sqrt(18*182/200^2/n)
n=1358.6
n=1359
Hence, the population proportion p with 99% confidence is 1359.
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find the midpoint of the segment with the following endpoints. (8,10) and (1,4) ?
Complete the following statement regarding the relationship between the Z and t distributions. Z is a special case of t as the number of degrees of freedom approaches __
The Z distribution is a special case of the t distribution as the number of degrees of freedom approaches infinity.
The t distribution is a family of probability distributions that arise when estimating the mean of a population based on a sample. The shape of the t distribution depends on the degrees of freedom, which is a parameter related to the sample size.
When the number of degrees of freedom in the t distribution approaches infinity, the distribution approaches the standard normal distribution, which is denoted by the letter Z. The Z distribution has a mean of 0 and a standard deviation of 1.
The reason why the Z distribution is a special case of the t distribution is that the t distribution converges to the Z distribution as the number of degrees of freedom increases. In practical terms, as the sample size increases, the t distribution becomes more similar to the Z distribution.
Therefore, we can say that Z is a special case of t as the number of degrees of freedom approaches infinity because the t distribution approaches the Z distribution in shape and characteristics as the sample size becomes larger.
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What is the definition of the range of a function?
Answer:
all the possible y-values a function can have
Step-by-step explanation:
all the possible y-values a function can have when substituting the domain/x-values
Plsss help want is the second answer
Answer:
5 1/2 is your second answer :)
Answer:
\(A)5\frac{1}{2}\)
Step-by-step explanation:
To multiply a number and a mixed number, first convert the improper fraction to a mixed number. This can be done by multiplying the "number" part of the mixed number by the denominator (number underneath the fraction bar) and then adding the result to the numerator. After doing so, one can either multiply the improper fraction by the number, and then simplify the result, or one can cross simplify the number and the denominator, then multiply by the numerator.
\(4 * 1\frac{3}{8}\\\\4 * \frac{11}{8}\\\\=\frac{44}{8}\\\\= \frac{11}{2}\)
Now one must convert this improper fraction to a mixed number. One can do this by diving the numerator by the denominator, writing the result as the "number" part of the mixed number, and then writing the remainder as the numerator of the fraction.
\(5\frac{1}{2}\)
Tickets for a school talent show cost $2 for
students and $3 for adults. If Chris spends at least
$11 but no more than $14 on x student tickets and 1
adult ticket, what is one possible value of x ?
Answer:
5
Step-by-step explanation:
5 × $2 = $10 then add $3 for the 1 adult ticket. $13
Answer:
$2 for students
$3 for adults
$11 no more than $14 on 1 ticket
14 ÷ 2 = 7
14 ÷ 3 = 4
7 + 4 = 11
therefore 7 students and 4 adults can go on 1 ticket
While reading about a research study, which of the following would tell you that an association claim is being
made?
a. The presence of a scatterplot or bar graph
b. The measurement of two variables
c. The use of a correlation coefficient
d. The interrogation of internal validity
The answer to this question is c.The use of a correlation coefficient.
The use of a correlation coefficient would tell you that an association claim is being made in a research study. A correlation coefficient is a statistical measure that shows the strength and direction of a relationship between two variables. It ranges from -1 to 1, with 0 indicating no relationship and -1 or 1 indicating a perfect negative or positive relationship, respectively.
A scatterplot or bar graph may be used to visually display the relationship between two variables, but they do not necessarily indicate that an association claim is being made. The measurement of two variables is necessary for any type of research study, but it does not inherently imply that an association claim is being made.
Interrogation of internal validity is a process used to ensure that the study's results accurately reflect the relationship between the variables being studied. It is important for any research study but does not specifically indicate that an association claim is being made.
Therefore,the answer to this question is c.The use of a correlation coefficient.
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Identify the terms and like terms in the expression.
1. 3x + 4 – 7x - 6
Terms: 3x, 4, –7x, –6
There are two kinds of like terms:
3x and –7x
4 and –6
miss america winners from the 1920's and 1930's had a average bmi of 19.2. a sample of recent winners had reported bmis of 18.3, 19.6, 19.9, 18.8, 18.2, 18.1, 18.1, 18.3, 18.3, 18, and 19.8 . do recent winners appear to be significantly different from those in the 1920s and 1930s? (assume normality)
A one-sample t-test is conducted to determine if recent Miss America winners have a significantly different BMI compared to winners from the 1920s and 1930s. The test results fail to reject the null hypothesis, indicating that recent winners do not appear to be significantly different from those in the 1920s and 1930s.
To determine if recent Miss America winners have a significantly different BMI compared to winners from the 1920s and 1930s, a one-sample t-test can be conducted. Using the given sample, the sample mean BMI is calculated to be 18.5.
The null hypothesis is that the population mean BMI of recent winners is equal to 19.2. The alternative hypothesis is that the population mean BMI of recent winners is different from 19.2.
Assuming a significance level of 0.05 and using a two-tailed test, the calculated t-value is -2.08 and the corresponding p-value is 0.057.
Since the p-value is greater than the significance level, we fail to reject the null hypothesis. This suggests that there is not enough evidence to conclude that recent Miss America winners have significantly different BMI compared to winners from the 1920s and 1930s.
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Which point is a solution to the system?
O (-1, 6)
O (0, 22)
O (2,9)
O (8, 2)
Answer: (2,9)
Step-by-step explanation:
It lies in the region that is shaded both red and blue (representing the fact that it satisfies both inequalities).
There is a probablity of ____ that any individual at a random from
a population will fall (plus or minus) one standard deviation of
the mean.
Step-by-step explanation:
I hope this answer is helpful ):
If I roll a 6-sided die, what is the probability that it will land on the number 2? *
6%
33%
17%
2%
1/36 (2.778%)
there is your answer
The graph shows the relationship between the number
of cups of flour and the number of cups of sugar in
Angela's brownie recipe.
The table shows the same relationship for Jaleel's
brownie recipe.
Jaleel and Angela buy a 12-cup bag of sugar and divide
it evenly to make their recipes.
If they each use ALL of their sugar, how much FLOUR
do they each need?
Angela's use 6 cups of flour and Jaleel's use 19/3 cups of flour.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The graph shows the relationship between the number of cups of flour and the number of cups of sugar in Angela's brownie recipe.
And, The table shows the same relationship for Jaleel's brownie recipe.
Hence, The equation for Angela's brownie recipe is,
Two points on graph are (4, 2) and (2, 1)
⇒ y - 2 = (2 - 1)/ (4 - 2) (x - 4)
⇒ y - 2 = 1/2 (x - 4)
⇒ y - 2 = 1/2x - 2
⇒ y = 1/2x
And, The equation for Jaleel's brownie recipe is,
Two points on graph are (3/2, 1) and (3, 2)
⇒ y - 1 = (2 - 1)/ (3 - 3/2) (x - 4)
⇒ y - 1 = 2/3 (x - 4)
⇒ y - 1 = 2/3x - 8/3
⇒ y = 2/3x - 8/3 + 1
⇒ y = 2/3x - 5/3
So, For Jaleel and Angela buy a 12-cup bag of sugar.
The equation for Angela's brownie recipe is,
⇒ y = 1/2x
⇒ y = 1/2 × 12
⇒ y = 6
The equation for Jaleel's brownie recipe is,
⇒ y = 2/3x - 5/3
⇒ y = 2/3 × 12 - 5/3
⇒ y = 19/3
Thus, Angela's use 6 cups of flour and Jaleel's use 19/3 cups of flour.
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