deigo has $500 dolars in his saving account each month he takes out $20 to pay for karate class. let m be the number of months write an expression yo show the total amount ain deigos saving account after m months
The expression shows the total amount in Diego's savings account after m months is 500 - 20m.
What is the total amount?
Two numbers are added together to form the sum. It is simple to figure out the sum of small integers. You can add two numbers using your fingertips. When two or more numbers are added together, a mathematical sum or maths sum is the outcome. It is the sum of the numbers when they are added up.
Here, we have
Given: Deigo has $500 in his saving account each month he takes out $20 to pay for karate class.
Let m be the number of months. Write an expression to show the total amount in Diego's savings account after m months.
The expression:
= 500 - 20m
Here m is the number of months
Hence, the expression shows the total amount in Diego's savings account after m months is 500 - 20m.
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Rearrange the equation so w is the independent variable.
u-5= -4(w - 1)
Answer:
w = ((u-5)/-4) + 1
Step-by-step explanation:
To make w an independent variable, it must be by itself, so we have
u - 5 = -4(w-1)
We divide both sides by -4
(u-5)/-4 = -4(w-1)/-4
(u-5)/-4 = w-1
Now we add 1 to both sides,
(u-5)/-4+1 = w-1+1
((u-5)/-4) + 1 = w
w = ((u-5)/-4) + 1
Answer:
u = -4w + 9.
Step-by-step explanation:
If w is the independent variable, it will be the variable you are changing.
u - 5 = -4(w - 1)
u - 5 = -4w + 4
u = -4w + 9.
Hope this helps!
Find the area of the polygon with the given vertices.
X(-1, 2), Y(-1, -3), Z(4, -3)
square units
Check the picture below.
Suppose that you have 4 green cards and 5 yellow cards. The cards are well shuffled. You randomly draw two cards without replacement.
The probability that two cards will be drawn at random, without replacement, is 13/18.
What is Probability?The ratio of good outcomes to all possible outcomes of an event is known as the probability. The number of positive results for an experiment with 'n' outcomes can be represented by the symbol x.
The probability of an event can be calculated using the following formula.
Probability(Event) = Positive Results/Total Results = x/n
In order to better grasp probability, let's look at a straightforward application.
Let's say we need to forecast if it will rain or not. Either "Yes" or "No" is the appropriate response to this query.
There is a chance that it will rain or not. Here, probability can be used. Using probability, one may forecast the results of a coin toss, a roll of the dice, or a card draw.
According to our answer-
P(at least 1 green) = 1 - P(no green)
P(no green) = draw yellow on both draws
= P(draw yellow on 1st draw) * P( draw yellow on 2nd draw, given draw yellow on 1st draw)
= 5/9 * 4/8 = 20/72 = 5/18
P(at least 1 green) = 1 - 5/18
= 13/18
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A fast-food restaurant sold 54 burgers with cheese. If the ratio of burgers sold with cheese compared to without cheese was 9: 5, how many burgers did they sell total?
Answer:
Step-by-step explanation:
We can write an relationship for this as:
3
:
2
→
24
:
b
Where
b
is the number of burgers sold without cheese.
We can rewrite the relationship as an equation and solve for
b
:
3
2
=
24
b
2
3
=
b
24
24
×
2
3
=
24
×
b
24
48
3
=
24
×
b
24
16
=
b
b
=
16
The restaurant would of sold
16
burgers without cheese with the information provided in the problem.
find the z-score, if the house price is $650,000 with the mean of $652,064 and a standard deviation of $127,622
The z-score, if the house price is $650,000 with a mean of $652,064 and a standard deviation of $127,622 is -0.0162.
What is mean?
The mean of the set of data is equal to the sum of all the quantities in the data, and divide by the no of quantities.
Given:
The price of the house, x = $650000,
The mean, m = $652064,
The standard deviation, d = $127622
Calculate the z score by the following formula,
Z = x - m / d
Here, Z is the z score.
Substitute the values,
Z = 650000 - 652064 / 127622
Z = -0.0162
Therefore, the z-score, if the house price is $650,000 with a mean of $652,064 and a standard deviation of $127,622 is -0.0162.
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What is the reason that 2 points always determine a line
Answer:
Because the line is the shortest path between 2 points
Which linear function represents a slope of ? A two column table with five rows. The first column, x, has the entries, 3, 6, 9, 12. The second column, y, has the entries, negative 11, 1, 13, 25. A coordinate plane with a straight line with a positive slope passing through (0, 3), (4, 4), and (8, 7). A two column table with five rows. The first column, x, has the entries, negative 5, negative 1, 3, 7. The second column, y, has the entries, 32, 24, 16, 8. A coordinate plane with a straight line with a positive slope passing through (2, 0), (3, 4), and (4, 8)
The linear function which represents a slope of -3 as required in the task content is; A two column table with five rows. The first column, x, has the entries, negative 5, negative 1, 3, 7. The second column, y, has the entries, 32, 24, 16, 8.
Which answer choice has a slope of -2?It follows that the task requires that a linear function whose slope, i.e rate of change is -2 is to be determined.
Since slope is the rate of change in y with respect to x;
The required linear function is; A two column table with five rows. The first column, x, has the entries, -5, -1, 3, 7. The second column, y, has the entries, 32, 24, 16, 8 so that we have;
Slope = (24 - 32) / (-1 -(-5)) = -8 / 4 = -2.
Remarks: The complete question is such that the required slope is -2.
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Answer: the second option
Step-by-step explanation:
i took the assignment
a farmer grows 128 red tomato plants and 102 yellow tomato plants each plant produces about 32 tomatoes the farmer plans to sell each tomato for$2
Answer:
14720$ he will make and there are 7360 tomatoes
Step-by-step explanation:
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 39 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 25 sales representatives reveals that the mean number of calls made last week was 40. The standard deviation of the sample is 3.8 calls. Using the 0.100 significance level, can we conclude that the mean number of calls per salesperson per week is more than 39?
H0:μ≤39
H1:μ>39
What is the decision regarding H0?
Answer:
Following are the solution to these choices:
Step-by-step explanation:
\(\mu_{0}=39\\\\n = 25\\\\s = 3.8\\\\\bar{X}=40\\\\\alpha =0.1\)
The test assumption is:
\(\text{Null Hypothesis} \to H_0:\mu =\mu_{0}\\\\\text{Alternate Hypothesis} \to H_1:\mu >\mu_{0}\\\\\)
It is a checked right-tail, since the alternative hypothesis is produced to classify the argument when the data difference is greater than 0.
\(\text{Critical value} =t_{\alpha,n-1} = t_{0.1, 24} =1.3178\\\\\text{Rejection Region:} t_{0} > t_{\alpha,n-1}\\\\\text{Since} \ t_{0} = 1.3158 < 1.3178 = t_{0.1}\\\\\)
The null hypothesis should be rejected: \(H_{o}: \mu = 39.0\ at\ \alpha =0.1.\)
They have little enough proof that perhaps the average number of calls per person per week amounts to even more than 39.
Can someone help me Solve:
-2√3+√75=
Answer:
\(3\sqrt{3}\)------------------
Simplify in below steps:
\(-2\sqrt{3} +\sqrt{75} =\)\(-2\sqrt{3} +\sqrt{25*3} =\)\(-2\sqrt{3} +\sqrt{5^2*3} =\)\(-2\sqrt{3} +5\sqrt{3} =\)\(3\sqrt{3}\)Mark raises guppies in an aquarium. He finds out that guppies reduce very rapidly and the number doubles every month. He starts out with 10 copies and the function Y equals 10 to X squared models the number of guppies he will have after X months which graph represents the function
The that will represent the exponential function is given in image
What are exponential functions, exactly?
A mathematical function with the formula f (x) = aˣ, where "x" is a variable and "a" is a constant that is referred to as the function's base and must be greater than zero. The most commonly used exponential function basis is the transcendental number e, which is approximately equivalent to 2.71828.
Exponentially increasing growth
In Exponential Growth, the amount expands incredibly slowly at first, then rapidly. With the passage of time, the rate of change quickens. The rate of growth quickens as time passes. The fast growth is supposed to indicate a "exponential ascent".
The exponential growth formula is: y = a (1+ r)ˣ, where r is the proportion of increase.
Now,
As the function y=10x² represents the number of gummies after x months
the the graph will be
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48 less than twice a number
Answer:
2x - 48
Step-by-step explanation:
If it is 48 less, then it is -48. Next is 2x because it is twice a number.
PLEASE HELP! only 48 mins left!
Answer:
-3.75
Step-by-step explanation:
y=1/4x-3 find the x and y intercepts
Given statement solution is :- The y-intercept is (0, -3).
The term "intercept" refers to the location where a line or curve crosses a graph's axis.
The points where a line crosses an axis are known as the x-intercept and the y-intercept, respectively.
To find the x-intercept, we set y = 0 and solve for x.
0 = (1/4)x - 3
Add 3 to both sides:
3 = (1/4)x
Multiply both sides by 4 to isolate x:
12 = x
So the x-intercept is (12, 0).
We set x = 0 and then solve for y to determine the y-intercept.
y = (1/4)(0) - 3
y = -3
So the y-intercept is (0, -3).
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Enter a positive value for d that makes this statement true: 18 *d less than 18 but greater than 0
Answer:
d=0.5
Step-by-step explanation:
18 x 0.5=9
9 is less than 18 and greater than 0
Answer:
9
Step-by-step explanation:
Each of 6 students reported the number of movies they saw in the past year. Here is what they reported. 14, 11, 15, 19, 12, 10 Send data to calculator Find the mean number of movies that the students saw. If necessary, round your answer to the nearest tenth. movies X Ś
The mean number of movies that the students saw is 13.5 (rounded to the nearest tenth).
To find the mean number of movies the students saw, you need to calculate the average of the given data. Here are the reported numbers of movies seen by the 6 students: 14, 11, 15, 19, 12, 10.
To calculate the mean, you sum up all the reported numbers and divide by the total number of students. In this case, the total number of students is 6.
So, let's calculate the mean:
(14 + 11 + 15 + 19 + 12 + 10) / 6 = 81 / 6 = 13.5
Therefore, the mean number of movies that the students saw is 13.5 (rounded to the nearest tenth).
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The curvature of a plane parametric curve x = f(t), y = g(t) is $ \kappa = \dfrac{|\dot{x} \ddot{y} - \dot{y} \ddot{x}|}{[\dot{x}^2 + \dot{y}^2]^{3/2}}$ where the dots indicate derivatives with respect to t. Use the above formula to find the curvature. x = 6et cos(t), y = 6et sin(t)
Answer:
The curvature is modelled by \(\kappa = \frac{e^{-t}}{6\sqrt{2}}\).
Step-by-step explanation:
The equation of the curvature is:
\(\kappa = \frac{|\dot {x}\cdot \ddot {y}-\dot{y}\cdot \ddot{x}|}{[\dot{x}^{2}+\dot{y}^{2}]^{\frac{3}{2} }}\)
The parametric componentes of the curve are:
\(x = 6\cdot e^{t} \cdot \cos t\) and \(y = 6\cdot e^{t}\cdot \sin t\)
The first and second derivative associated to each component are determined by differentiation rules:
First derivative
\(\dot{x} = 6\cdot e^{t}\cdot \cos t - 6\cdot e^{t}\cdot \sin t\) and \(\dot {y} = 6\cdot e^{t}\cdot \sin t + 6\cdot e^{t} \cdot \cos t\)
\(\dot x = 6\cdot e^{t} \cdot (\cos t - \sin t)\) and \(\dot {y} = 6\cdot e^{t}\cdot (\sin t + \cos t)\)
Second derivative
\(\ddot{x} = 6\cdot e^{t}\cdot (\cos t-\sin t)+6\cdot e^{t} \cdot (-\sin t -\cos t)\)
\(\ddot x = -12\cdot e^{t}\cdot \sin t\)
\(\ddot {y} = 6\cdot e^{t}\cdot (\sin t + \cos t) + 6\cdot e^{t}\cdot (\cos t - \sin t)\)
\(\ddot{y} = 12\cdot e^{t}\cdot \cos t\)
Now, each term is replaced in the the curvature equation:
\(\kappa = \frac{|6\cdot e^{t}\cdot (\cos t - \sin t)\cdot 12\cdot e^{t}\cdot \cos t-6\cdot e^{t}\cdot (\sin t + \cos t)\cdot (-12\cdot e^{t}\cdot \sin t)|}{\left\{\left[6\cdot e^{t}\cdot (\cos t - \sin t)\right]^{2}+\right[6\cdot e^{t}\cdot (\sin t + \cos t)\left]^{2}\right\}^{\frac{3}{2}}} }\)
And the resulting expression is simplified by algebraic and trigonometric means:
\(\kappa = \frac{72\cdot e^{2\cdot t}\cdot \cos^{2}t-72\cdot e^{2\cdot t}\cdot \sin t\cdot \cos t + 72\cdot e^{2\cdot t}\cdot \sin^{2}t+72\cdot e^{2\cdot t}\cdot \sin t \cdot \cos t}{[36\cdot e^{2\cdot t}\cdot (\cos^{2}t -2\cdot \cos t \cdot \sin t +\sin^{2}t)+36\cdot e^{2\cdot t}\cdot (\sin^{2}t+2\cdot \cos t \cdot \sin t +\cos^{2} t)]^{\frac{3}{2} }}\)
\(\kappa = \frac{72\cdot e^{2\cdot t}}{[72\cdot e^{2\cdot t}]^{\frac{3}{2} } }\)
\(\kappa = [72\cdot e^{2\cdot t}]^{-\frac{1}{2} }\)
\(\kappa = 72^{-\frac{1}{2} }\cdot e^{-t}\)
\(\kappa = \frac{e^{-t}}{6\sqrt{2}}\)
The curvature is modelled by \(\kappa = \frac{e^{-t}}{6\sqrt{2}}\).
If the zeros of a quadratic functions are -2 and 4, which graph could represent the function? A. A parabola declines from (negative 3 point 1, 10) through (negative 3, 8), (negative 2, 0), (negative 1, negative 4), (1, negative) and rises through (2, negative 8), (3, negative 4), (4, 0), (5, negative 6), and (5 point 5, 10). B. A parabola declines from (negative 5 point 8, 10), (negative 5, 7), (negative 4, 0), (negative 8, negative 2), (negative 1, negative 8 point 4) and rises through (2, 0), (3, negative 6) and (3 point 9, 10). C. A downward open parabola rises from (negative 6 point 2, negative 10), (negative 5 point 2, negative 6), (negative 4, 0), (negative 3, 1) and declines through (negative 1 point 4, negative 2), (1, negative 4), (0, negative 8), and (0 point 5, 10). D. A downward open parabola rises from (negative 0 point 5, negative 10), (0, negative 8), (1, negative 4), (2, 0), (3, 1), and declines through (5, negative 4), (6, negative 8), and (6 point 5, negative 10) on the x y coordinate plane.
Option A. The only graph that could represent the function with the zeros of -2 and 4 is the graph is : A parabola declines from (negative 3 point 1, 10) through (negative 3, 8), (negative 2, 0), (negative 1, negative 4), (1, negative) and rises through (2, negative 8), (3, negative 4), (4, 0), (5, negative 6), and (5 point 5, 10).
How to determine the graphThe zeros of a quadratic function are the x-values where the function equals zero (where it crosses the x-axis). In this case, you mentioned that the zeros of the function are -2 and 4.
Looking at the provided options:
A. This graph crosses the x-axis at (-2, 0) and (4, 0), which are indeed the zeros of the function. Therefore, this could be a possible representation of the function.
B. This graph crosses the x-axis at (-4, 0) and (2, 0). These are not the zeros given for the function (-2 and 4), so this graph is not a possible representation of the function.
C. This graph crosses the x-axis at (-4, 0), but it never crosses at x=4. Instead, it crosses at x=2. Therefore, this is not a possible representation of the function.
D. This graph crosses the x-axis at (2, 0), but does not cross the x-axis at x=-2. Therefore, this is not a possible representation of the function.
So, the only graph that could represent the function with the zeros of -2 and 4 is the graph provided in Option A.
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Tutorial Exercise Find all the points at which the direction of fastest change of the function f(x, y) = x2 + y2 _ 8x 16y is i +j_ Step The direction in which the maximum rate of change of f(x, y) occurs at a point (a, b) is given by the vector Vfla, b) For flx,y) = x2 + y2 _ 8x - 16y, we have Vf(x, y) 2x 8)i + (2y - 16)jl (2x 8. 2y 16) Step 2 We need to find all points (x, Y) for which (2x 8)i + (2y 16)j is parallel to +j. So we must solve (2x 8)i + (2y 16)j k[i + j]- This means that k = 2x 8 and k = 2y 16. Equating these gives uS Submit
There are no points at which the function has its direction of fastest change along the vector i + j. This is because the equations lead to a contradiction.
The exercise asks to find all the points at which the function f(x, y) = x^2 + y^2 - 8x - 16y has its direction of fastest change along the vector i + j.
To find the points, we need to solve the equation:
(2x - 8)i + (2y - 16)j = k(i + j)
where k is a constant. Since the direction of fastest change is along the vector i + j, we know that the left-hand side of the equation represents the gradient vector of f(x, y).
Equating the x and y components of the gradient vector to the corresponding components of the vector i + j, we get:
2x - 8 = k
2y - 16 = k
Equating these two expressions for k, we get:
2x - 8 = 2y - 16
Solving for y in terms of x, we get:
y = x - 4
Substituting this expression for y into the equation of the gradient vector, we get:
2x - 8 = k
2(x - 4) - 16 = k
Simplifying, we get:
2x - 8 = k
2x - 24 = k
Substituting the first equation into the second, we get:
2x - 24 = 2x -
Simplifying, we get:
16 = 0
This is a contradiction, which means there are no points at which the function has its direction of fastest change along the vector i + j.
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Help me learn how to solve this please
The percentage that can be filled with $3 in 1990 is: 29.41%
How to solve percentage increase problems?To calculate percentage growth rate:
Beginning:
Calculate the difference (increase) between the two numbers you are comparing. after that:
Divide the increment by the original number and multiply the result by 100. Growth rate = increment / original number * 100.
We are told that it cost $3 to fill a gas tank as at 1970.
Now, there was a percentage price increase of (78.8 - 23.1)% = 55.2% from 1970 to 1990. Thus:
Cost of a gallon in 1970 = $0.36
Thus, number of gallons bought with $3 = 3/0.36 = 8.33 gallons at full tank
Now, in 1990, the cost is $1.23 and as such:
Quantity that can be bought = 3/1.23 = 2.45 gallons
Percentage of tank filled = 2.45/8.33 * 100% = 29.41%
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Express the following rate as a unit rate: "$119.28 for 28 ceiling tiles" Response
Answer:
$4.26 per ceiling tile.
Step-by-step explanation:
Analyze the diagram below and answer the question that follows.
Answer:
B. Complements of congruent angles are congruent.
Step-by-step explanation:
Angles <DCF and <FEG have angles measures that are complementary to to angles E and C.
A boat is heading towards a lighthouse, whose beacon-light is 126 feet above the water. The boat’s crew measures the angle of elevation to the beacon, 13∘. What is the ship’s horizontal distance from the lighthouse (and the shore)? Round your answer to the nearest tenth of a foot if necessary.
Answer: The distance of the ship from the lighthouse is 546.4 feet.
Step-by-step explanation:
What is the angle of elevation?
The angle of elevation is an angle that is formed between the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle formed is an angle of elevation.
The beacon light is 126 feet high, the angle of elevation to the beacon is 13° and the distance from the lighthouse to the ship = x
These from a right-angled triangle,
from trigonometry
tan 13 = 126/x
making x the subject of the equation we have
x tan 13 = 126
x = 126/tan 13
but tan 13 = 0.2308
x = 126/0.2308
x = 546.4 feet
In conclusion, the ship's distance from the lighthouse is 546.4 feet.
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Calculate the surface area of the following object 8 km 14 km:
Which one you think is the correct answer?
1- 15834 km
2- 1926.0 km
3- 6597 km
4- 1935.2 km
Answer:
1.option is the correct answer right
How you plug this in binomial probability
The Binomial probability of x = 3 for the given parameters is 0.2048
Using Binomial probability conceptThe Binomial probability relation can expressed as :
\(P(x) = nCx * p^{n} * q^{n-x}\)
where :
n = number of trials = 17p = probability of success q = 1 - pfor x = 3
We substitute x into the equation thus :
P(x = 3) = 17C3 * (1/8)³ * (1 - 1/8)¹⁴
P(x = 3) = 0.2048
Therefore, the probability of x = 3 in the scenario given is 0.2048
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Discussion topic!!!!!!!!
Answer:
I use probability to make a decision in my life when I decide to either go outside or not go outside if it looks like it will rain. The outcome compares with my expectations because sometimes when I think it'll rain, it does, and sometimes it doesn't. This shows probability in my life because there is a chance it will rain and a chance it won't.
Plssss help me quickly
Answer:
36
Step-by-step explanation:
First you calculate the area of the rectangle. then you substract the area of the triangle.
The area of a rectangle is equal to the product of its length and breadth. In other words, if the length of a rectangle is ‘l’ and its breadth is ‘b’, then its area ‘A’ can be calculated as A = l x b= 6*8= 48
The area of a triangle can be calculated using the formula A = 0.5 x b x h where ‘b’ is the length of the base of the triangle and ‘h’ is its height. so A =0.5*8*3 = 12
Area of the figure = 48-12=36
Hàm số y=x/(|x|-1) có số tiệm cận là
Answer:
I think it would be 2,34 becuase when you think about the question it fits together
Step-by-step explanation:
:)
Help please I will give BRAINLIST I’m exhausted
Answer:
What question are u asking
Step-by-step explanation: