Answers
Related Questions
Given v=(6,3) and w=(1,-2), what is the result of v-w
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I don't believe you need the word "result" here. At first I thought you'd meant "resultant." Here you're finding the "difference" v less w.
The result of v - w is (5, 5).
Explanation:To find the result of v - w, we need to subtract the corresponding components of the two vectors. Given v = (6, 3) and w = (1, -2), we subtract their x-components and their y-components separately.
v - w = (6 - 1, 3 - (-2))
Therefore, v - w = (5, 5).
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Write the expression 5x+4x^2(2x+7)-6x^2-9x as a polynomial in standard form
Answers
5x + 8x³ + 28x² - 6x² - 9x
8x³ + 22x² - 4x
This can be simplified to:
2x(4x² + 11x - 2)
I don't know which of those answers you are looking for.
Answer:
8x^3 + 22x^2 - 4x
Step-by-step explanation:
5x+4x^2(2x+7)-6x^2-9x
Open the bracket
5x + 8x^3 + 28x^2 - 6x^2 - 9x
= 8x^3 + 28x^2 - 6x^2 - 9x + 5x
= 8x^3 + 22x^2 - 4x
In standard form, the polynomial 5x+4x^2(2x+7)-6x^2-9x is 8x^3 + 22x^2 - 4x
Daniel’s tennis team made $582.85 from running the concession stand at a basketball game. The food and drinks cost the team $64. What expression would model the amount of money each player would receive if the money is divided equally?
Answers
The answer would be
1. (582.85 - 64)/p Or D
And
2. 64.85 Or A
The expression that would model the amount of money each player would receive if the money is divided equally is y = (518.85/x).
What is division?
Division is a operation in mathematics which is used to divide a specific number into equal parts of specific magnitude.
Given is Daniel’s tennis team which made $582.85 from running the concession stand at a basketball game. The food and drinks cost the team $64.
Assume that there are [x] players in the team.
Now, the money left after spending on food = 582.85 - 64 = 518.85
Each player, when divided equally, would receive = y = (518.85/x)
Therefore, the expression that would model the amount of money each player would receive if the money is divided equally is y = (518.85/x).
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I WILL MARK BRAINLIEST TO A CORRECT AND EXPLAINED ANSWER!!!!
Look at points C and D on the graph:
What is the distance (in units) between points C and D? Round your answer to the nearest hundredth.
A. 4.54 units
B. 5.00 units
C. 5.83 units
D. 34.00 units
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D(1:0)
Image the right triangle between C, D and the point A(-4,0)
CA is 3-0=3; AD is 1-(-4)=1+4=5
CD is √3²+5²=√34=5.8309...
Answer:
Option C.
Step-by-step explanation:
Coordinates of the points C and D are (-4, 3) and (1, 0)
We have to find the distance CD.
Distance CD = [tex]\sqrt{(x-x')^{2}+(y-y')^{2}}[/tex]
CD = [tex]\sqrt{(1+4)^{2}+(0-3)^{2}}[/tex]
= [tex]\sqrt{25+9}[/tex]
= [tex]\sqrt{34}[/tex]
= 5.83 units
Therefore, Option C. distance CD = 5.83 units is the answer.
What is the area of the figure to the nearest tenth?
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Area of the full circle = π (6)² = 36π
Area of the sector = 165/360 x 36π = 51.8 in²
Answer: 51.8 in²
3.14 x 36 = 113.04 square inches
the shape is 165 degrees of a full circle which is 360 degrees
so area of the shape would be 165/360 x 113.04
= 51.8 square inches
Am I correct in thinking that the answer to this derivative problem is B?
dy/dx = y/x^2
dy/y = dx/x^2
ln y * ln c = -1/x
cy = e^(-1/x)
y = ce^(-1/x)
Answers
dy/dx = x(1+y)
dy/(1+y) = x dx .... separate variables
int[dy/(1+y)] = int[x dx] ... apply integral to both sides
ln(1+y) = (1/2)x^2+C ... see note below
1+y = e^{(1/2)x^2+C}
1+y = e^C*e^{(1/2)x^2}
1+y = Ce^{(1/2)x^2}
y = Ce^{(1/2)x^2}-1
Answer is actually choice C (not choice B)
note: we would use absolute value bars for the natural log on the left side, but because y > -1, this means 1+y > 0. So there's no need to worry about if 1+y is negative
-----------------------------------------------------
Checking the answer:
y = Ce^{(1/2)x^2}-1
dy/dx = d/dx[ Ce^{(1/2)x^2}-1 ]
dy/dx = d/dx[(1/2)x^2]*Ce^{(1/2)x^2}
dy/dx = (1/2)*2x*Ce^{(1/2)x^2}
dy/dx = x*Ce^{(1/2)x^2} ... we get some messy expression
x*(1+y) = x*(1+Ce^{(1/2)x^2}-1)
x*(1+y) = x*Ce^{(1/2)x^2} .... we get the same messy expression as before
So this shows that dy/dx = x*(1+y) is a true equation for y > -1 and y = Ce^{(1/2)x^2}-1, which confirms the right answer.
suzie divided a 3-pound bag of apples into 2 equal piles. How many lbs of apples are in each pile
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3 pounds divided by 2 piles = 1.5 pounds per pile
Suzie's 3-pound bag of apples divided into two equal piles will result in each pile weighing 1.5 pounds. This is a basic arithmetic problem often referred to as equal distribution.
Explanation:Suzie is dividing a 3-pound bag of apples into two equal piles. This is a simple division problem where the total weight of apples (3 pounds) is distributed equally into two piles. Therefore, we simply divide the total weight by the number of piles.
To calculate the weight of apples in each pile, we divide the total weight (which is 3 lbs) by the number of piles (which is 2). So, 3 lbs ÷ 2 = 1.5 lbs. Each pile would weigh 1.5 lbs.
This type of problem is often referred to as an equal distribution problem in mathematics. It falls under the category of basic arithmetic and is typically taught in lower grades.
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Suppose that there were a strong correlation between the variables n and p. Which of these is a true statement?
A. n may cause p.
B. p must cause n.
C. n must cause p.
D. n must not cause p.
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A correlation can be called association when it can be ascertained that the result in one variable is as a result of the result of the other variable. Though correlation is a condition for causation, but correlation does not imply causation.
Therefore, given that there were a strong correlation between the variables n and p, the true statement is "n may cause p".
A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being tested for hepatitis will test as being infected 2% of the time. And research, the test is given to 30 healthy (not having hepatitis) subjects. Let X be the number of subjects who test positive for the disease
A. What is the probability that all 30 subjects will appropriately test as not being infected?
B. What are the mean and standard deviation of X?
C. To what extent do you think this is a viable test to use in the field of medicine?
Answers
[tex]P(X) = \frac{n!}{k!(n-k)!} p^{k} (1-p)^{n-k} [/tex]
where:
n = total number of events
k = number of success we want
p = probability of success
Therefore, since the problem tells you that X is the number of subjects who test positive for the disease, you will have:
[tex]P(X) = \frac{30!}{0!(30-0)!} 0.02^{0} (1-0.02)^{30-0} [/tex]
= 1 · 1 · 0.98³⁰
= 0.5455
Hence, the probability of none of the 30 subjects testing positive to the desease is 54.55%
B) In a binomial distribution, the mean is given by the formula:
μ = n · p
= 30 · 0.02
= 0.6
And the standard deviation is given by the formula:
σ = √[n·p·(1-p)]
= √[30·0.02·0.98]
= √0.588
= 0.77
Hence, the mean is 0.6 and the standard deviation is 0.77
C) This test is not very viable: 30 subjects are a sample too small compared to the population (millions of people who need to be tested), the probability of finding that all the 30 subjects are healty is only a little bit over 50%, the standard deviation is too high compared to the mean, and 2% of false positive is a percentage too high to consider the test viable.
Quick need the answer!
Answers
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
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y >-x + 4
y <= 2(x - 1)^2 - 18
Comment
Let's establish what we are talking about. The question says purple and to me purple means the shaded area above the blue and to the upper right of the parabola.
Not so. It is the wine colored area right above the parabola according to the direction of he inequalities.
Second thing: the question is trying to see if you can read all he information you need from a graph.
Step One
Find the equation of the line.
We can read 2 points right away the x and y intercepts.
(4,0) is the x intercept
(0,4) is the y intercept
The general equation for the slope intercept equation is
y = mx + b So when x = 0 then b = y
4 = m*0 + b
b = 4
This far we have
y = mx + 4
when x = 4, y = 0
0 = m*4 + 4 Subtract 4 from both sides.
-4 = m*4 Divide by 4
-4/4 = m
m = - 1
Complete equation is y = -1x + 4
The inequality is y > -x + 4 Top answer block.
Step Two
Find the equation for the parabola
You could just read the minimum point which is (1,-18) There is a catch. (Isn't there always?) This may have a constant in front of the (x - a)^2 term. We'll check that out in the next step.
y = (x - 1)^2 - 18 is the basic vertex solution
Step Three
Find the value of a in
y = a(x - 1)^2 - 18
You have to do this because the answer has a space before the brackets. We need another point. The y intercept might work.
y = a(0 -1)^2 - 18
Use the point (0,-16)
-16 = a(1) - 18
-16 = a - 18 Add 18 to both sides.
2 = a
So the equation of the quadratic is
y <= 2(x - 1)^2 - 18 <<<<<< answer second section down on your question sheet.
Find the area of the following rectangle in square feet. 44 ft 2 11 ft 2 14.7 ft 2 132 ft 2
Answers
we know that
area of rectangle=base*height
in this problem
base is 22 ft
height is 2 yd
convert yd to ft
1 yd is equal to 3 ft
2 yd--------> 2*3-----> 6 ft
area of rectangle=22*6-----> 132 ft²
the answer is
132 ft²
Answer:
132
Step-by-step explanation:
Maria works at a bookstore. On Wednesday, she sold three times as many books as she did on Tuesday. On Thursday, she sold 8 fewer books than she did on Wednesday. During the three days, Maria sold 20 books. Create an equation that can be used to find m, the number of books Maria sold on Tuesday.
Answers
Tuesday - m
Wednesday - 3m
Thursday - 3m - 8
Show all of these in an addition problem with a total of 20 and simplify.
m + 3m + (3m - 8) = 20
7m - 8 = 20; You can solve this equation to find the number of books Maria read.
What is the area of a regular hexagon with a side length of 12 cm
Answers
More exactly would be 374.12.
Hope this helps!
A group of 12 people attend a meeting. Every pair of people shook hands with each other. How many handshakes were there?
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So there will be 11+10+9+8+7+6+5+4+3+2+1=66 handshakes.
Hope this helped!
Mind helping someone out?
I've kinda been stuck on this problem and it's my last math problem for the day.
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what is the surface area of this triangular pyramid
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Equilateral Triangle Height = side * square root (3) / 2 =
12 * 0.8660254038 = 10.3923048454
Triangle Area = 12 * 10.3923048454 * .5
= 62.3538290724
Pyramid Area = 62.3538290724 * 4 sides =
249.4153162896
Bob can type 2 letters in 4 hours while Bill can do it in 6. How many hours would it take them, working together, to type six letters?
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r1 = 2/4 = 1/2 letter / hour
The production rate of Bill is given by:
r2 = 2/6 = 1/3 letter / hour
Thus, the production rate of both is:
r1 + r2 = 1/2 + 1/3 = 5/6 letter / hour
Then, the production of 6 letters is given by:
rate * time = letters
(5/6) t = 6
t = (6/5) 6
t = 36/5 = 7 1/5 hours = 7hr 12 min
Answer:
it would take them, working together, to type six letters about:
7hr 12 min
Answer:
It would take them 7.2 hours.
What are the factors of x^2-64
Answers
a^2 - b^2 = a^2 - b^2
so
x^2-64
=x^2 - 8^2
= (x + 8)(x - 8)
The factors of x^2 - 64 are (x - 8) and (x + 8), derived by recognizing the expression as a difference of squares and applying the formula a^2 - b^2 = (a - b)(a + b).
Explanation:The question asks about the factors of x^2-64. This expression is a difference of squares, which can be factored using the formula a^2 - b^2 = (a - b)(a + b). In this case, x^2 is a^2, and 64 is b^2, with b being 8 since 82 = 64. Applying the formula, we get:
x^2 - 64 = (x - 8)(x + 8)
This shows that the factors of x^2-64 are (x - 8) and (x + 8). This process of factoring by recognizing patterns, especially the difference of squares, is a useful algebraic skill when simplifying expressions or solving equations.
please help asap 50 pts
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Your answer should be C.
[tex]The\; vertex\; is\; at\; 19,361\; so\; your\; answer\;is\;c![/tex]
Share 450 in the ratio of 4:5
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4n + 5n = 450
9n = 450
n = 50
Now we multiply into the ratio:
200:250
Or
200 and 250
450 : 9 = 50
4 · 50 = 200
5 · 50 = 250
Answer: 200 and 250.
Which set of ordered pairs could be generated by an exponential function?
(0, 0), (1, 1), (2, 8), (3, 27)
(0, 1), (1, 2), (2, 5), (3, 10)
(0, 0), (1, 3), (2, 6), (3, 9)
(0, 1), (1, 3), (2, 9), (3, 27)
Answers
For this case we must find the set of ordered pairs that form an exponential function.
When observing, the last set of ordered pairs is an exponential function of the form:
[tex]y = 3 ^ x[/tex]
For x = 0:
[tex]y = 3 ^ 0 = 1[/tex]
We have the ordered pair:
[tex](x, y): (0, 1)[/tex]
For x = 1:
[tex]y = 3 ^ 1 = 3[/tex]
We have the ordered pair:
[tex](x, y): (1, 3)[/tex]
For x = 2:
[tex]y = 3 ^ 2 = 9[/tex]
We have the ordered pair:
[tex](x, y): (2, 9)[/tex]
For x = 3:
[tex]y = 3 ^ 3 = 27[/tex]
We have the ordered pair:
[tex](x, y): (3, 27)[/tex]
Answer:
The set of ordered pairs that form an exponential function is:
[tex](0, 1), (1, 3), (2, 9), (3, 27)[/tex]
Answer:
D
Step-by-step explanation:
What is the remainder when the positive integer n is divided by 12 ? (1) when n is divided by 6, the remainder is 1. (2) when n is divided by 12, the remainder is greater than 5?
Answers
The number n would be 31. In this case you could divide it by 6 and get 5 with a 1 remainder and then divide it by 12 and get 2 with a 7 remainder.
The figure below is the two-dimensional net of a rectangular prism. What is the surface area of the prism it can be folded to form? Show your work.
8 square units
20 square units
24 square units
28 square units
Answers
we know that
surface area=area A +area B+area C+area D+area E+area F
area A=area F
area B=area area D
area C=area E
so
surface area=[2*1]+[4*2]+[4*1]+[4*2]+[4*1]+[2*1]----> 28 units²
the answer is
28 units²
Answer:
the answer is d:)
Step-by-step explanation:
i took the quiz on edge and got 100:D
What is sin (51)?
Answer Choices : 1.23 , 0.63 , 0.51 , 0.78
Answers
Make sure your calculator is in degrre mode when doing these.
so the answer is 0.78
The population of a town is 20,000 and is decreasing at a rate of 5% per year. What is the population after 23 years?
Answers
using his telescope, Tommy watches a bald eagle as it sits on the top of a cliff. the telescope is positioned so that the line of sight to the eagle forms a 38 degree angle of elevation. the telescope sits 1.3 m above the ground and the base of the telescope is 116 m away from the base of the cliff. to the nearest tenth of a meter, how high above the ground is the eagle?
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multiply and simplify. 5x^2 / y^3 * 4y^2 / 10x
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[tex] \frac{5x^2}{y^3} * \frac{4y^2}{10x} [/tex]
Rewriting the expression we have:
[tex]\frac{20x^2y^2}{10xy^3} [/tex]
Then, simplifying and by properties of exponents we have:
[tex]{2x^{2-1}y^{2-3}} {2xy^{-1}}[/tex]
Rewriting we have::
[tex] \frac{2x}{y} [/tex]
Answer:
The simplified expression is given by:
[tex] \frac{2x}{y} [/tex]
Find the surface area of each right regular pyramid. a pentagonal pyramid with base sides 1.5 meters, base area 3.9 m2, and slant height 4 meters
Answers
since the base area is 3.9 m2, we could just add that to the total at the end.
since the base edge is 1.5 m and the height is 4m, we could find the area of the face by doing (1.5 times 4)/2 which would give us 3m2.
Since there are 5 faces(pentagonal), we would multiply 3 times 5, and would get 15m total for all the triangle faces.
so to get the total surface area, you would add 15 + 3.9 (which was the base area) and get 18.9m2....
....;);) hope this helps
Evaluate the series 4 – 2 + 1 – 0.5 + 0.25 to S10. Round to the nearest hundredth.
Answers
[tex]S_{n}=a_{1}\dfrac{r^{n}-1}{r-1}\\\\S_{10}=4\cdot \dfrac{(-\frac{1}{2})^{10}-1}{-\frac{1}{2}-1}=4\cdot \dfrac{(\frac{1}{1024}-1)}{(-\frac{3}{2})}\\\\=\dfrac{8}{3}\cdot \dfrac{1023}{1024}=\dfrac{341}{128}[/tex]
The sum is approximately 2.66.