since the angle is on the circumference, therefore:
solve for x:
\(undefined\)Brittany started babysitting. She started off with $15 in her account, and her babysitting rate is $10 an hour. The first week she babysat, she worked for 4 hours. The second week she baby sat, she worked 6 hours. The third week she babysat for 2 hours. If in the fourth week she babysits for 8 hours, how much total money will she have?
Answer:
$315
Step-by-step explanation:
Find the standard form of the equation of the ellipse with the given characteristics.
center: (0,0)
focus: (3,0)
Vertex: (4,0)
The standard form of the equation of the ellipse \(x^2 / 16 + y^2 / 3 = 1\).
What is standard form of the equation of the ellipse?
For example, d2ydx2+4y=0 if your differential equation is homogeneous (it equals zero and not any function). y(x=0)=0 and y(x=2)=0 were given as the boundary conditions, and you were requested to answer the equation. Then the aforementioned boundary conditions are homogenous boundary conditions.
An ellipse is a type of conic section that is defined as the set of all points such that the sum of the distances from the point to two fixed points (called the foci) is constant. The standard form of the equation of an ellipse with center (h, k) is:
\((x - h)^2 / a^2 + (y - k)^2 / b^2 = 1\)
where a and b are the lengths of the major and minor axes, respectively, and (h, k) is the coordinates of the center of the ellipse.
In this case, the center of the ellipse is (0, 0) and the focus is (3, 0), so we can use the distance formula to find the distance between the center and focus:
\(\sqrt{((3 - 0)^2 + (0 - 0)^2)} = 3\)
The distance between the center and focus is equal to the length of the major axis, so a = 3.
In addition, the vertex of the ellipse is (4, 0), which is 4 units away from the center. Since the distance between the center and vertex is equal to the length of the major axis, we can set a = 4 to find the length of the minor axis:
\((x - 0)^2 / 4^2 + (y - 0)^2 / b^2 = 1\)
Solving for b, we find that b = \(\sqrt{(3)}.\)
Therefore, the standard form of the equation of the ellipse with the given characteristics is:
\((x - 0)^2 / 4^2 + (y - 0)^2 / \sqrt{(3)^2} = 1\)
This can be simplified to:
\(x^2 / 16 + y^2 / 3 = 1\)
The standard form of the equation of the ellipse \(x^2 / 16 + y^2 / 3 = 1\).
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There are 6 green, 4 pink, and 6 brown marbles in a hat. You pick 4 marbles from the hat. Marbles are returned after they have been drawn. Find the probability that the first marble is brown, the second marble is not brown, the third marble is pink, and the fourth marble is not brown. Give your answer as a decimal to the nearest thousandth.
Answer:
0.037
Step-by-step explanation:
Since the marbles are returned the total possibilites are always the same and the events are independent
Total marbles = 16
6/16 x 10/16 x 4/16 x 10/16 = 0.037
Emma and Lauren read a total of 47 books. Emma reads 17 more books than Lauren. Enter the number of books lauren read
Answer:30
Step-by-step explanation:47-17 = 30
3 1/8 divided by (x - 4 7/28) = 17/18 + 1 5/6
(Key on how to write the mixed numbers: Three is a whole number and then the fraction is 1/8, 4 is the whole number and 7/28 is the fraction, 1 is the whole number and 5/6 is the fraction)
Please provide the work and the answer! :)
x = 301/56
Algebraic expressionsAlgebra is the branch of mathematics that deals with numbers and values which are represented with letters and symbols.
Sometimes, we do not want to mention a particular number, we can represent the number by a letter or a suitable symbol. This approach is algebraic.
For example, d + d = 2d
This is an example of an algebraic expression
Given the algebraic expression,
\(3\frac{1}{8} \div (x - 4 \frac{7}{28} ) = \frac{17}{18} + 1 \frac{5}{6} \)
Step 1:
Simplify the expression by converting the mixed numbers into improper fractions:
25/8 ÷ ( x - 119/28) = 17/18 + 11/6
Step 2: Simplify the right side of the equation
25/8 ÷( x - 119/28) = 17/18 + 33/18
25/8 ÷( x - 119/28) = 50/18
Step 3: Multiply both sides of the equation by (x - 119/28)
25/8 = 50/18 × (x - 119/28)
Step 4: Multiply both sides of the equation by (18/50)
25/8 × (18/50) = (x - 119/28)
Step 5: Simplify the left side of the equation
9/8 = (x - 119/28)
Step 6: Add 119/28 to both sides of the equation
9/8 + 119/28 = x
Step 7: Calculate the value of x:
x = 9/8 + 119/28
= 63/56 + 238/56
= 301/56
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17. The hourly temperature at Portland, Oregon, on a particular day is recorded below.
1 A.M. 2 3 4 5 6 7 8 9 10 11 12 Noon
46° 44° 43° 41° 40° 40° 41° 43° 46° 52° 65° 69°
1 P.M. 2 3 4 5 6 7 8 9 10 11 12 Midnight
72° 74° 75° 75° 77° 75° 74° 70° 62° 55° 51° 48°
a. Find the amplitude of a sinusoidal function that models this temperature variation.
b. Find the vertical shift of a sinusoidal function that models this temperature variation.
c. What is the period of a sinusoidal function that models this temperature variation?
d. Use t = 0 at 5 P.M. to write a sinusoidal function that models this temp. variation.
e. What is the model’s temperature at 10 A.M.? Compare this to the actual value?
Answer:
a. Amplitude: 19.65446
b. Vertical Shift: 58.00713
c. Period: 2/0.22797 = 27.56146
d. 19.65446 * sin(0.22797x + 1.79552) + 58.00713
e. Model's Temperature at 10 A.M.: f(-7) = 61.91
This value is 9.91 degrees higher than the actual value.
Step-by-step explanation:
With 1 am being timed as t = 1, we fitted the temperature data collected at different points during the day in Portland, Oregon using sine regression. After receiving the sine function, we respond to the many questions connected to the sine function's properties.
What is sinusoidal Function?A smooth, repeating oscillation characterizes a sinusoidal function. Sine is an oscillation that is smooth and repeated, thus the name "sinusoidal." A pendulum swinging, a spring bouncing, or a guitar string vibrating are a few examples of commonplace objects that may be described by sinusoidal functions.
Given, The hourly temperature at Portland, Oregon, on a particular day is recorded.
Using sine regression on the given data with t = 1 being the hour 1 am etc, we get the following sine regression formula using the TI-83 Graphing Calculator where T is the temperature:
T = a sin(bt + c) + d
Where a = 19.65, b = 0.28, c = -2.93, d = 58.01
From the sine regression function above:
a. The amplitude of the sinusoidal function is a = 19.65.
b. The vertical shift is d = 58.01.
c. The period is 2*pi /b = 2*pi/ 0.28 = 22.44
d. At 5 PM, the time value is t = 17. Hence the temperature distribution with 5 PM being t = 0 will be
t = asin[b(t - 17) + c] +d.
e. From the table, at 10 AM, the actual value of the temperature is 52 degrees.
Using the model in part a., at 10 AM, with t = 10, the temperature will be
T = a sin(10b + c) + d
T = 55.46 degrees
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Complete question:
Jackson invested 140 in an account paying an interest rate of 3 3/4 compounded quarterly.Lucy invested
Answer:
Step-by-step exi i dont know but thanks for the points sorry
A man earns $65000. He pays 18% of that in tax. (a) Calculate how much he has left, after paying the tax. (b) He invests $4500 and earns 6% interest per annum. Calculate the interest after 2 years. (c) He takes out a loan to buy a car. The price of the car is $24750. He pays $25740 altogether. What is the percentage interest?
a) The amount left after paying the tax is $53300.
(b) The interest after 2 years is $540.
(c) The percentage interest is 4%.
We have,
a)
The amount of tax the man pays.
= $65000 x 0.18
= $11700
Therefore, he has left.
= $65000 - $11700
= $53300
(b)
The interest earned after 2 years.
= $4500 x 0.06 x 2
= $540
(c)
The total amount of interest paid on the loan.
= $25740 - $24750
= $990
The percentage interest.
= ($990 / $24750) x 100%
= 4%
Thus,
(a) The amount left after paying the tax is $53300.
(b) The interest after 2 years is $540.
(c) The percentage interest is 4%.
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Find the value of x in the picture below.(4x+20)(x-10)°
Supplementary angles are two angles that add up 180 degrees, since our two angles are supplementary:
(4x+20)+(x-10)=180
4x+20+x-10=180
5x+10=180
5x=180-10
5x=170
x=170/5
x=34
Anota una magnitud vectorial y explica tu respuesta
A physical quantity with both magnitude and direction is called a vector quantity.
A vector quantity is a physical quantity that has both magnitude and direction. One example of a vector quantity is velocity, which is defined as the rate of change of an object's position with respect to time. Velocity is a vector quantity because it has both a magnitude (speed) and a direction (the object's motion). For instance, if an object is moving with a speed of 20 meters per second to the north, its velocity would be 20 meters per second north. If the object's direction changes to east, its velocity would become 20 meters per second east. Therefore, velocity is a vector quantity because its value depends not only on the speed of the object but also on the direction in which it is moving.
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Complete Question
Write down a vector quantity and explain your response.
Find the numbers with the following property three times the sum of four and a number is less than seven times the same number
Let's represent the number with the variable "x". According to the given property, we can write the following equation:
3(x + 4) < 7x
Now, let's solve this inequality to find the range of numbers that satisfy the property.
3x + 12 < 7x
Subtract 3x from both sides:
12 < 4x
Divide both sides by 4 (since the coefficient of x is 4):
3 < x
So, the range of numbers that satisfy the given property is x > 3.
Therefore, any number greater than 3 will satisfy the condition. For example, 4, 5, 6, 7, 8, etc.Step-by-step explanation:
Find the y intercept of y=3log2(x+3)-6
Answer:
\(\text{$y$-intercept$\;=\log_2 \left(\dfrac{27}{64}\right) \approx -1.245$}\)
Step-by-step explanation:
The y-intercept is the value of y when x = 0.
Therefore, to find the y-intercept of y = 3 log₂(x + 3) - 6, substitute x = 0 into the equation and solve for y.
\(\implies y=3 \log_2(0+3)-6\)
\(\implies y=3 \log_2(3)-6\)
Using the log law logₐ(a) = 1, rewrite 6 with log base 2:
\(\implies y=3 \log_2(3)-6\log_2(2)\)
\(\textsf{Apply the log power law:} \quad n\log_ax=\log_ax^n\)
\(\implies y=\log_2(3)^3-\log_2(2)^6\)
\(\implies y=\log_2(27)-\log_2(64)\)
\(\textsf{Apply the log quotient law:} \quad \log_ax - \log_ay=\log_a \left(\dfrac{x}{y}\right)\)
\(\implies y=\log_2 \left(\dfrac{27}{64}\right)\)
Therefore, the exact value of the y-intercept of the given equation is log₂(27/64) which is approximately -1.245 to the nearest thousandth.
what is the measure of m
Answer:
m = 4√6Step-by-step explanation:
From the similarity of smaller triangles we get:
n/8 = 4/n ⇒ n² = 8*4 ⇒ n² = 32Use Pythagorean to find the length of m:
m² = 8² + n²m² = 64 + 32m² = 96m = √96m = 4√6i dont understand how this question works so therefeore i dont know how to do it, can anyone help?
is simply changing from percentage form to a decimal form usually, but the fractional form works the same. Check the picture below.
A recipe for jelly frosting calls for 1/3 cup of jelly and 1 egg white.
Is the number of egg whites used proportional to the cups of jelly used?
Answer:
No the number of egg whites used is not proportional to the cups of jelly used.
Step-by-step explanation:
if your jelly is 1/3 cup then just one egg white is not also 1/3 a cup
alva nunez is a punch press operator for drummond machine company she earns $0.95 for every holding she presses. what is here total pay for a week in whoch she presses 310 modlings
Alva nunez total pay for the week in which she presses 310 moldings is
$294.5What is unit price?The cost per unit of an item is represented by the unit price.
To determine the unit price of an item, we divide the price of a specific number of units by the number of units.
How to find the total payIf she earns $0.95 for every holding she presses this means that the unit price is 0.95
for 310 moldings Alva nunez will earn
= 0.95 * 310
= 294.5
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Distance between points (-3 4) and (1,7)
Answer:
4^2+ 3^2=c^2
16+9=25
5
the distance is 5Step-by-step explanation:
Which expression is equivalent to 14x+3−13x+(−2)?
The expression which is equivalent to the expression 14x+3−13x+(−2) is:
x +1
What are expressions?An expression is a sentence with at least two numbers or variables having mathematical operation. Math operations can be addition, subtraction, multiplication, division.
For example, 2x+3
Given that,
The expression,
14x+3−13x+(−2)
Now it can be simplify in the following way:
⇒ 14x - 13x + 3 - 2
the variable and constant terms can be clubbed together,
⇒ x + 1
Hence, the equivalent expression is x + 1
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The average snail can move 1.81 X 10³ mi in 5 hours. What is its rate of speed in miles per hour?
Answer:
Step-by-step explanation:
How Far Can A Snail Travel In One Hour
If a snail can travel over half an inch per minute, that means in one hour a snail can travel up to 40 inches. If you want to think about how far this is in feet, it means that snails move up to 3.5 feet per hour.
Consider the fact that the average human being can walk about a mile, or 5280 feet, in one hour.
This means that snails can take up to 1,500 days, or over 4 years, to travel just one mile.
there are 3 factors in the equation 5 x 3 x 2 = 30 true or false
Answer:
true
Step-by-step explanation:
the factors are simply what is being multiplied together. We can see there are 3 because we have 5,3,and 2. 30 is not a factor because that is the answer. I hope this helps!
Answer:
x = 2 and x = 4
Step-by-step explanation:
The solution of the given equation is shown on the graph
There are two intercepts with coordinates of
(2, 2) and (4, -22)The x-coordinates are
x= 2 and x= 4Correct option is 3 or C.
Answer:
C
Step-by-step explanation:
On the graph, you can see that we are given two points; (2, 2) and (4, -22)
Since we are looking for the value of "x", we need the x value of the given points.
The x values in both points are 2 and 4. Thus are the solutions.
Best of Luck!
4(p + 2) –2p – 16
Please Help!
Answer:
2p-8
Step-by-step explanation:
Know you're amazing and smart!
Answer:
Step-by-step explanation:
4p+8-2p-16 combine like terms
2p-8
Solve these equations for x. x = ?3x + y = 52y + 1 = x -3
1) Since we were told to find the x-value in this system we can use the Elimination Method:
But first, let's rearrange the 2nd equation
\(\begin{gathered} \begin{bmatrix}3x+y=5\\ 2y+1=x-3\end{bmatrix} \\ 3x+y=5 \\ -x+2y=-4 \\ ---------- \end{gathered}\)2) Now let's multiply the first equation by 2, and divide the second by -1, and then we can add both equations simultaneously:
\(\begin{gathered} 6x+2y=10 \\ x-2y=4 \\ ------------ \\ 7x=14 \\ x=\frac{14}{7} \\ x=2 \end{gathered}\)) 65 people were asked on the activities they engage in during their free time. The results showed that 23 visit national parks, 26 engage in cycling while 22 engage in swimming. Furthermore 9 engage in swimming and visit national parks, 9 engage in swimming only while 11 visit national parks only. How many engage in
i. Swimming and cycling
Answer:
Step-by-step explanation:
i am working on the assumption that nobody does all three of them
i got 4 because including the people that do swimming and park, the total number of people that do swimming is 22.
the same logic goes for cycling: including the people that do swimming and visit the national park, the total is 23.
so that means that find how many people do swimming and cycling, we have to add the people doing only swimming, with the people doing both swimming and park and then subtract that answer from 22 which gives you 4
which of the following figures have the smallest area?
Leena is arranging 3 different books in a row on a shelf. Create a sample space for the arrangement of a detective story (D), a mystery story (M), and a comic book (C).
SOLUTION
So we have detective story book represented as D
Mystery story book represented as M
And Comic book represented as C.
So, she can arrange it as follows
D C M
C D M
M C D
C M D
M D C and
D M C
So, the sample space is 6 ways
Or you can say
\(3!=3\times2\times1=6ways.\)Therefore, the answer is 6 ways
Please see the attached
a. Monthly payment for the bank's car loan is $407.67
b. Monthly payment for the savings and loan association's car loan is $315.99
c. Total amount paid would be $2,035 less for the bank's car loan than for the savings and loan association's car loan.
What is interest rate?The cost of borrowing money, usually expressed as a percentage of the amount borrowed, is what a lender charges a borrower to use their money. This cost is known as an interest rate.
(a) To find the monthly payment for the bank's car loan, we can use the formula for the present value of an annuity:
\(PV = PMT * \frac{1 - (1 + \frac{r}{n})^{(-n*t)}}{\frac{r}{n} }\)
putting the given values,
⇒ \(21000 = PMT * \frac{1 - (1 + \frac{0.065}{12})^{(-12*5)}}{\frac{0.065}{12} }\)
Solving for PMT, we get:
PMT = $407.67
Therefore, the monthly payment for the bank's car loan is $407.67
(b) To find the monthly payment for the savings and loan association's car loan, we can use the same above formula:
where PV is still $21,000, PMT is the monthly payment, r is still 0.065, n is still 12, but t is now 7 years x 12 months/year = 84 payments.
putting the given values,
\(21000 = PMT * \frac{1 - (1 + \frac{0.065}{12})^{(-12*7)}}{\frac{0.065}{12} }\)
Solving for PMT, we get:
PMT = $315.99
Therefore, the monthly payment for the savings and loan association's car loan is $315.99.
(c) Bank's car loan: $407.67 x 60 = $24,460.20
Savings and loan association's car loan: $315.99 x 84 = $26,495.16
Therefore, the bank's car loan would have the lowest total amount to pay off, by: $26,495.16 - $24,460.20 = $2,034.96
Therefore, the total amount paid would be $2,035 less for the bank's car loan than for the savings and loan association's car loan.
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There are a total of 64 students in a drama club and a yearbook club. The drama club has 10 more students than the yearbook club.
Write a system of linear equations that represents this situation. Let x represent the number of students in the drama club and y represent the number of students in the yearbook club.
System of equations:
__x+ __y=64
There are 37 students in drama club and 27 students in yearbook club.
And the system of equations will be 1.x + 1.y = 64.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
Given that,
Total number of students in drama club and yearbook club = 64,
Also, there is a yearbook club. Students in drama club has 10 more than yearbook club,
If x represents the number of students in the drama club and y represents the number of students in yearbook club.
According to given condition,
x+ y = 64 (1)
and x = y + 10
Substitute the value of x in equation (1),
y + 10 + y = 64
2y = 54
y = 27
And x = 27 + 10 = 37
The required system of equations,
1.x + 1.y = 64
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Goodmorning I need help with this question. And may you explain to me how to get this right step by step. Thank you.
Answer:
I think it's "C"
Step-by-step explanation:
Because a function is the independent variable to the dependent variable... Since, the cost relies on the weight, the cost is dependent. While, the weight is independent. I don't know if I'm right, I kinda suck at math
surface area of a prism please help its my last day 120 points
Answer:
Area of the base = (8×6)/2 = 24 yd²
Height of the prism = 8 yd
Perimeter of the base = 8+6+10 = 24 yd
Surface area = 2B + Ph = (2×24)+(24×8) = 48+192 = 240 yd²