Answer:
y=-2x+4
Step-by-step explanation:
he spun a 4 five times. which statements are true? choose all that apply.; nathan rolls a number cube and records the result of each roll in the table.; which of the following is a valid probability distribution; what is the probability of an event that is impossible; what is the probability of an event that is certain; what is the sum of the probabilities of all possible outcomes; what is the sum of the probabilities of all values of the random variable
"Nathan rolls a number cube and records the result of each roll in the table" is a true statement. Probability can be used to make predictions or decisions in a variety of situations, such as in gambling, finance, and science. In these situations, probabilities can be calculated based on statistical data or by using mathematical models.
"He spun a 4 five times." is not a valid statement, as it is not clear what "he" or "a 4" refers to.
A valid probability distribution is a set of possible outcomes of a random event, along with the corresponding probabilities of those outcomes occurring. For example, if we roll a number cube, the possible outcomes are 1, 2, 3, 4, 5, and 6, and the probability of each outcome occurring is 1/6.
The probability of an event that is impossible is 0.The probability of an event that is certain is 1.The sum of the probabilities of all possible outcomes is 1. This is because the probabilities of all possible outcomes must add up to 1, as one of the outcomes must occur.The sum of the probabilities of all values of the random variable is equal to the sum of the probabilities of all possible outcomes, which is 1.Learn more about probability, here https://brainly.com/question/11234923
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Roberto cut 12 meters of string into 4 equal sized pieces. How long is each piece of string in centimeters?
Answer:
300
Step-by-step explanation:
Divide 12 and 4.
12/4 = 3
Each piece is 3 meters long.
To convert meters to centimeters you have to multiply 3 by 100.
100 x 3 = 300.
The doubling time of a bank account balance is 10 years. By what factor does the balance grow in 30 years?
The doubling time of a bank account balance is the amount of time it takes for the balance to double. In this case, the doubling time is 10 years, which means that the balance will double every 10 years.
Let's say the initial balance in the bank account is B. After 10 years, the balance will have doubled to 2B. After another 10 years (i.e., 20 years from the initial balance), the balance will have doubled again to 4B. Finally, after another 10 years (i.e., 30 years from the initial balance), the balance will have doubled one more time to 8B.
Therefore, after 30 years, the balance in the bank account will have grown by a factor of 8B/B, which simplifies to just 8. This means that the balance in the bank account will be 8 times the initial balance after 30 years.
To summarize, the balance in the bank account will double every 10 years due to the given doubling time. After 30 years, it will have doubled three times, resulting in a growth factor of 2 x 2 x 2 = 8, which means the balance will be 8 times the initial balance.
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The volume of the planet is approximately 1.02×109 km³, and the mass of the planet is about 5.683 × 1021 kg. What is the average density of the planet in grams per cubic centimeter? The average density of the planet is approximately_____ g/cm³ .
The average density of the planet is approximately 5.6g/cm³
How to determine the densityThe formula for density is expressed as;
D = m/v
Such that;
D is the densitym is the massv is the volumeFrom the information given, we have that;
Volume = 1.02×10⁹ km³
Mass = 5.683 × 10²¹ kg
Convert the parameters
Volume = 1.02×10²⁴cm³
Mass = 5.683 × 10²⁴g
Substitute the values, we have;
Density = 5.683 × 10²⁴g/1.02×10²⁴cm³
Density = 5.6g/cm³
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In which of the given sets of numbers are all the numbers solutions of 9−2x≥3?(1 point)
Responses
4, 5, 6
4, 5, 6
3, 4, 5, 6
3, 4, 5, 6
0, 1, 3, 5
0, 1, 3, 5
0, 1, 2, 3
0, 1, 2, 3
HELP ME ASAP PLS
Answer:
The correct answer is: 3, 4, 5, 6.
Step-by-step explanation:
The correct answer is: 3, 4, 5, 6.
To check, we can substitute each number into the inequality:
When x = 3: 9 - 2(3) ≥ 3, which simplifies to 3 ≥ 3 (true)
When x = 4: 9 - 2(4) ≥ 3, which simplifies to 1 ≥ 3 (false)
When x = 5: 9 - 2(5) ≥ 3, which simplifies to -1 ≥ 3 (false)
When x = 6: 9 - 2(6) ≥ 3, which simplifies to -3 ≥ 3 (false)
Therefore, only the numbers in the set {3, 4, 5, 6} satisfy the inequality.
Bob invested his savings in two investment funds. The amount he invested in Fund A was 3 times as much as the amount he invested in Fund B. Fund A returned a 5% profit and Fund B returned a 7% profit. How much did he invest in Fund B, if the total profit from the two funds together was $2200?
The amount that he invested in Fund B if the total profit from the two funds together was $2200 is $8,800.
How to find the amount invested?Let x represent the amount invested in Fund B
Let 3x represent the amount invested in Fund A
Hence,
.07x + .05(3x) = 2200
.07x + .15x = 2200
.25x = 2200
Divide both side by .25x
x = 2200/.25
x = $8,800 (invested in Fund B)
Fund A:
3x = 3(8,800)
3x = $26,400 (Invested in Fund A)
Therefore $8800 was invested in Fund B.
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A) Find an equation for the line perpendicular to the tangent line to the curve y=x^3-4x+6 at the point (2,6)
-The equation is y=
b) What is the smallest slope on the curve? At what point on the curve does the curve have this slope?
-The smallest slope on the curve is
-The curve has the smallest slope at the point
c) Find equations for the tangent lines to the curve at the points where the slope of the curve is 8.
Answer:
f(x) = x³ - 4x + 6
f'(x) = 3x² - 4
a) f'(2) = 3(2²) - 4 = 12 - 4 = 8
6 = 8(2) + b
6 = 16 + b
b = -10
y = 8x - 10
b) 3x² - 4 = 0
3x² = 4, so x = ±2/√3 = ±(2/3)√3
= ±1.1547
f(-(2/3)√3) = 9.0792
f((2/3)√3) = 2.9208
c) 3x² - 4 = 8
3x² = 12
x² = 4, so x = ±2
f(-2) = (-2)³ - 4(-2) + 6 = -8 + 8 + 6 = 6
6 = -2(8) + b
6 = -16 + b
b = 22
y = 8x + 22
f(2) = 6
y = 8x - 10
The equation perpendicular to the tangent is y = -1/8x + 25/4
-The smallest slope on the curve is 2.92
The curve has the smallest slope at the point (1.15, 2.92)
The equations at tangent points are y = 8x + 16 and y = 8x - 16
Finding the equation perpendicular to the tangentFrom the question, we have the following parameters that can be used in our computation:
y = x³ - 4x + 6
Differentiate
So, we have
f'(x) = 3x² - 4
The point is (2, 6)
So, we have
f'(2) = 3(2)² - 4
f'(2) = 8
The slope of the perpendicular line is
Slope = -1/8
So, we have
y = -1/8(x - 2) + 6
y = -1/8x + 25/4
The smallest slope on the curveWe have
f'(x) = 3x² - 4
Set to 0
3x² - 4 = 0
Solve for x
x = √[4/3]
x = 1.15
So, we have
Smallest slope = (√[4/3])³ - 4(√[4/3]) + 6
Smallest slope = 2.92
So, the smallest slope is 2.92 at (1.15, 2.92)
The equation of the tangent lineHere, we set f'(x) to 8
3x² - 4 = 8
Solve for x
x = ±2
Calculate y at x = ±2
y = (-2)³ - 4(-2) + 6 = 6: (-2, 0)
y = (2)³ - 4(2) + 6 = 6: (2, 0)
The equations at these points are
y = 8x + 16
y = 8x - 16
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What is the area of the region of points
satisfying the inequalities x ≤ 0, y ≤ 0, and
y ≥ |x + 4| − 5?
the area of the region of points satisfying the inequalities x ≤ 0, y ≤ 0, and y ≥ |x + 4| − 5 is 12.5 square units.
15% of 80 is 60% of what number? There were no answer choices please help!
Answer:
80
Step-by-step explanation:
15 percent of 80 is 12
and 12 is 60 percent of 80!
hope this helps :)
18. Multiply, then check your work by switching factors.
a. 693 x 83
b. 910 x 45
c. 38 x 84
d. 409 x 89
The requried, Multiplies(with switching factors.) area given below,
a.
693 x 83 = 57489
83 x 693 = 57489
The answer is 57489.
b.
910 x 45 = 40950
45 x 910 = 40950
The answer is 40950.
c.
38 x 84 = 3192
84 x 38 = 3192
The answer is 3192.
d.
409 x 89 = 36401
89 x 409 = 36401
The answer is 36401.
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in 2009 Larry's gross pay was $275,800 in that year the maximum taxable for Social Security was 118500 and the Social Security was 62.2%.
Based on the maximum taxable amount for social security in 2009, and the social security tax rate, the social security tax that Larry paid was $7,347.
How much did Larry pay in social security taxes?The total amount paid by Larry as Social security tax can be found as;
= Maximum amount allowable for social security tax x Social security tax rate
The social security tax rate was 6.2% not 62.2%.
The social security tax was therefore:
= 118,500 x 6.2%
= $7,347
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The table below shows the proportional relationship between the weight of cat food, in ounces, and the number of bags of cat food:
Number of Bags of Cat Food Number of Ounces of Cat Food
4 64
5 80
6 96
What is the constant of proportionality? (5 points)
4
7
16
32
Answer:
It is 16
Step-by-step explanation:
Because 64÷4=16 80÷5=16 96÷6=16
So to find the constant of portionality you divide the second number by the first number.
Answer:its 16
Step-by-step explanation:
A bag contains 6 red marbles, 6 green marbles, and 6 blue marbles. If Olivia draws a marble, replaced it and then draws another marble, what is the probability that both marbles she draws will be red?
Answer:
5/51 or 9.8
Step-by-step explanation:
Since she does not put the marble back it's dependent.
1/3 chances the first marble is red and 5/17 the second is too.
Multiply and you get 5/51 odds, or approximately 9.8% chance
Answer:
1/9.
Step-by-step explanation:
Prob(First marble is red) = 6/18 = 1/3
Prob(Second marble is red) = 1/3
Required probability = 1/3 * 1/3 = 1/9.
This is 6th-grade math just find the area of the triangle-
A= 1/2 (b) (h)
Answer:
120
Step-by-step explanation:
Answer:
Formula for area:
\(area = \frac{1}{2} \times( base) \times (height) \\ \\ { \boxed{A = \frac{1}{2}(b)(h) }}\)
according to triangle given;
base, b » 30 ft
height, h » 40 ft
substitute the variables for the equation:
\(A = \frac{1}{2} \times (30) \times (40) \\ \\ A = 30 \times 20 \\ \\ { \boxed{ \boxed{area \: \: A = 600 \: {ft}^{2} }}}\)
determine whether the statement describes a population or a sample. the number of times the students on your floor order fast food in a week.
The number of times the students on your floor order pizza in a week, population.
A population is a complete set of individuals or objects that share common characteristics. It is an entire group of people, animals, plants, or objects that can be studied. A population can also be a group of people living in a certain geographical area.
A sample is a subset of a population. It is a smaller group of individuals or objects drawn from the population that are used to make inferences about the population as a whole.
A sample is used in statistical analysis to estimate population characteristics, such as mean, median, and variance. The accuracy of the estimates depends on the size and representativeness of the sample.
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The complete question is:
Determine whether the statement describes a population or a sample. The number of times the students on your floor order pizza in a week, ___.
find gf(2) if f(x)=2x+1,g(x)=3x-2
Answer:
13
Step-by-step explanation:
To find g f(2) , evaluate f(2) and substitute the value obtained into g(x)
f(2) = 2(2) + 1 = 4 + 1 = 5 , then
g(5) = 3(5) - 2 = 15 - 2 = 13
write the equation of the point (0,4) and. a slope or -1, in slope intercept form
Answer:
= y + x - 4 = 0
Step-by-step explanation:
a slope or -1
The point = (0,4).
the equation =
\( \frac{y - y1}{x - x1} = m\)
y - 4 = -1
x - 0
note: Perform close multiplication
remember every whole number is over 1
y - 4 = - ( x - 0)
y - 4 = - x + 0
y + x - 4 = 0.
-2(6 - 3n) + 27n = -3(n - 8)
Answer:
n=1
Step-by-step explanation:
-2(6 - 3n) + 27n = -3(n - 8)
-12+6n+27n=-3n+24
-12+33n=-3n+24
----------------------------
33n=-3n+36
+3 +3
-------------
36n=36
---- ----
n=1
NO LINKS!!!
Use the graph of f(x) below to determine the following. Please help me.
=======================================================
Explanation:
a)
The domain is the set of allowed x inputs. The graph spans forever to the left and to the right, meaning the set of all real numbers is the domain. We can write that as an inequality like this \(-\infty < x < \infty\) which becomes the interval notation \((-\infty, \infty)\)
The range is the set of possible y outputs of a function. The highest y can go is y = 4 shown by the mountain peak on the left side at (-2,4). The range as an inequality is \(-\infty < y \le 4\) which becomes the interval notation \((-\infty, 4]\)
The use of a square bracket means we include the endpoint 4.
---------------------
b)
The x intercepts are the locations where the function curve crosses the x axis. That would be at the locations (-4,0) and (4,0).
The y intercept is where the graph crosses the y axis and it is at (0,1)
---------------------
c)
A decreasing function slopes downhill when moving to the right.
For this f(x) function, such a thing occurs on the interval -2 < x < 0 and on the interval 3 < x < infinity.
Those translate over to the interval notation of \((-2,0)\) and \((3, \infty)\) respectively. Use the union symbol to glue the intervals together getting the final result of \((-2,0) \cup (3,\infty)\)
That notation says "x is in the interval -2 < x < 0, or it is in the interval 3 < x < infinity".
---------------------
d)
I'm not sure how to do this without knowing what the function is (eg: something like f(x) = -x^4+5x). The graph alone isn't enough to accurately pinpoint the locations of concave down vs concave up.
We'll have to eyeball it. The portion on the interval -infinity < x < -1 appears to be concave down. Then we have -1 < x < 1.5 or so appear to be concave up. Then finally 1.5 < x < infinity seems to be concave down.
The -1 < x < 1.5 then translates to the interval notation \((-1, 1.5)\) which is not to be mixed up with ordered pair notation. Unfortunately the two notations look identical sometimes.
---------------------
e)
The graph is on or below the x axis for the intervals of:
-infinity < x ≤ -44 ≤ x < infinityThose lead directly to the interval notation \((-\infty, -4] \cup [4, \infty)\)
I'm using square brackets to include the endpoints -4 and 4. Like with part c, the union symbol U represents the word "or" pretty much. Either we're in one interval or the other, but not both.
---------------------
f)
The critical points are where the graph changes direction. These represent vertex points, which are either the highest or lowest of a given neighborhood.
The graph shows we have three such points:
(-2,4)(0,1)(3,2)The first and last points are local maxes, and the middle point mentioned is a local min.
---------------------
g)
We have f(x) not being odd because the graph does not go through the origin. All odd functions must go through the origin. This is possibly the quickest way to rule out f(x) being odd.
Another way is to show that f(-x) = -f(x) is false for any counter-example.
For instance, if x = 2 then f(-x) = f(-2) = 4 while -f(x) = -f(2) = some value between 1 and 2. So it's hopefully fairly clear that f(-2) = -f(2) is false which means f(-x) = -f(x) is false in general.
---------------------
h)
f(-2) = 4 according to the graph, due to the point (-2,4)
From here we can say
f(f(-2)) = f(4) = 0
Calculate the volume of this cylinder in terms of Pi and to the nearest hundredth
The volume of the given cylinder in terms of pi as required to be determined in the task content is; 5000 pi.
What is the volume of the given cylinder?It follows from the task content that the volume of the cylinder which is as represented is to be determined.
Since the volume of a cylinder is;
V = 2πr²h
where r = 10 and h = 25.
V = 2π × 10² × 25.
V = 5000π.
Ultimately, the volume of the given cylinder as required to be determined is; V = 5000 pi.
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There are 4 pink, 5 yellow, 2 violet and 3 gray marbles
in a hat. You pick 2 marbles from the hat. Marbles are
NOT returned to the hat.
P(pink, then violet)
P(gray, then gray)
P(not yellow, not yellow)
P(yellow, not yellow)
================================================
Work Shown for problem 1
P(pink, then violet) = P(pink)*P(violet given 1st was pink)
= (4/14)*(2/13)
= 8/182
= 4/91
------------------------------
Work Shown for problem 2
P(gray, then gray)
= P(gray)*P(gray given 1st was gray)
= (3/14)*(2/13)
= 6/182
= 3/91
-------------------------------
Work Shown for problem 3
P(not yellow, not yellow)
= P(not yellow)*P(not yellow given 1st was not yellow)
= (9/14)*(8/13)
= 72/182
= 36/91
-------------------------------
Work Shown for problem 4
P(yellow, not yellow)
= P(yellow)*P(not yellow given 1st was yellow)
= (5/14)*(9/13)
= 45/182
PLS HELP ASAP, WILL MARK YOU BRAINLIEST!!!!
Answer:
Try looking at each angle and add the sides
Step-by-step explanation:
Point W has coordinates (4, -7). If it is reflected over the y-axis. What are the coordinates of its image? (4, -7) (-4, 7) (-4, -7) (4, -7)
Answer:
(-4, -7)
Step-by-step explanation:
reflection over the y-axis means the x-value becomes the opposite (+ → - or - → +)
(4, -7) → (-4, -7)
Answer:
(-4, -7)
Step-by-step explanation:
3. A student borrows £3500 to be repaid after 3 years. The lender quoted a flat rate of interest
of 6.25%. Calculate the total interest that should be paid.
Answer: The total interest is 656.25.
Step-by-step explanation:
T = 3yrs
P = 3500
R = 6.25%
I = PTR/100
= 3500*3*6.25/100
= 65625/100
= 656.25
NEED HELP FAST!
Evaluate. 12÷(2+2\3)^2
a. 6 4\9 ( six and four ninths)
b. 4 1\2 ( four and a halves)
c. 3 2\3 ( three and wo thirds)
d. 1 11\16 ( one and eleven sixteenths)
Answer:
it is 42
Step-by-step explanation:
12 ×9/64
when it simplify u get
42
Answer:
it is 42 when you simplify you get 42
What are the factors of 42 to find it’s prime numbers and how do I put it in a factor tree
Answer:
See below
Step-by-step explanation:
Starting with 42, there would be two branches of 2 and 21 connected to 42. Since 2 is prime, there are no more branches. Since 21 is composite, then two more branches are drawn of 3 and 7 connected to 21. Since 3 and 7 are prime, there are no more branches.
Therefore, the prime factorization of 42 is 2*3*7, and its factors would be 1,2,3,6,7,14,21,42.
I need some help who ever helps me YOU ARE AN ANGEL FROM HEAVEN
Answer:
-9 1/4
Step-by-step explanation:
Answer:
- 9 and 1/4
Step-by-step explanation:
I converted fractions to decimals.
-5 and 3/4 = -5.75
3 and 1/2 = 3.5
-5.75 - 3.5 = -9.25
-9.25 = -9 and 1/4
What equation that line passes through the point P(1/3,4) and has no slope.
The equation of the line that passes through the point P(1/3,4) and has no slope is y = 4.
According to the question,
We have the following information:
Point through which line is passing = (1/3,4)
Slope of the line = 0
We know that the following formula is used to find the equation of the line passing through a point:
y-y' = m(x-x')
We have x' = 1/3 and y' = 4.
y-4 = 0(x-1/3)
y-4 = 0
Adding 4 on both sides of the equation:
y = 4
Hence, the equation of the line that passes through the point P(1/3,4) and has no slope is y = 4.
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which is equal to (sinx+cosx)^2+(sinx-cosx)^2 using identities?
The expression (sinx + cosx)^2 + (sinx - cosx)^2 simplifies to
4 + 2sinxcosx.How to simplify the identityTo simplify the expression (sinx + cosx)^2 + (sinx - cosx)^2 using trigonometric identities, we can expand and simplify the expression.
Expanding the squared terms
(sin^2x + 2sinxcosx + cos^2x) + (sin^2x - 2sinxcosx + cos^2x)
Using the trigonometric identity sin^2x + cos^2x = 1, we can simplify further:
(1 + 2sinxcosx + 1) + (1 - 2sinxcosx + 1)
Simplifying the expression, we have:
2 + 2sinxcosx + 2
Combining like terms, we get:
4 + 2sinxcosx
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rewrite(6+3)9using the distributive property of multiplication over Addition