Answer: 8.9 and 6.7
Step-by-step explanation:
These are right triangles, so you can use the Pythagorean theorem, a² + b² = c², where a and b are the legs, or shorter sides, of the triangle and c is the hypotenuse, or the longest side.
1. 4² + 8² = c²
16 + 64 = c²
80 = c²
c = √80
c = 8.9
2. 6² + 3² = c²
36 + 9 = c²
45 = c²
c = √45
c = 6.7
Which equation represents a vertical compression by 1/4, horizontal shift right 3 and a vertical shift up 7?
The equation that represents the transformation is y = (1/4)f(x-3) + 7
Hwo to determine the equationFrom the question, we have the following parameters that can be used in our computation:
vertical compression by 1/4, horizontal shift right 3vertical shift up 7This equation applies the following transformations to the graph of y = f(x):
A vertical compression by 1/4: multiplying the output (y-value) by 1/4 scales the graph down vertically by a factor of 1/4.A horizontal shift right by 3: subtracting 3 from the input (x-value) shifts the graph right by 3 units.A vertical shift up by 7: adding 7 to the output (y-value) shifts the graph up by 7 units.Read more about transformation at
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if the probability that a portfolio outperforms its benchmark in any quarter is 0.75, the probability that the portfolio outperforms its benchmark in three or fewer quarters over the course of a year is closest to: 0.26 0.42 0.68
The closest solution to this total among the available possibilities is 0.68, indicating that the portfolio is likely to surpass its benchmark in three or fewer quarters over the course of a year.
What is probability?The field of mathematics concerned with probability is known as probability theory. Although there are various distinct interpretations of probability, probability theory approaches the idea rigorously mathematically by articulating it through a set of axioms.
Here,
The probability that the portfolio outperforms its benchmark in three or fewer quarters over the course of a year is the sum of the probabilities of outperforming the benchmark in exactly 0 quarters, 1 quarter, 2 quarters, and 3 quarters.
Since the probability of outperforming the benchmark in any quarter is 0.75, the probability of not outperforming the benchmark in a quarter is 1 - 0.75 = 0.25.
The probability of not outperforming the benchmark in exactly 0 quarters is 0.25⁰ = 1
The probability of not outperforming the benchmark in exactly 1 quarter is 0.25¹= 0.25
The probability of not outperforming the benchmark in exactly 2 quarters is 0.25² = 0.0625
The probability of not outperforming the benchmark in exactly 3 quarters is 0.25³ = 0.015625
So, the probability of outperforming the benchmark in exactly 0 quarters, 1 quarter, 2 quarters, and 3 quarters is 1 - 0.25⁰, 1 - 0.25¹, 1 - 0.25², and 1 - 0.25³, respectively.
The sum of these probabilities is the probability of outperforming the benchmark in three or fewer quarters over the course of a year:
P(outperform in three or fewer quarters) = 1 - 0.25⁰ + 1 - 0.25¹ + 1 - 0.25² + 1 - 0.25³
This expression can be calculated to get an exact answer, but to get the closest answer to the options given, we can round off the intermediate results to 2 decimal places:
P(outperform in three or fewer quarters) = 1 + 0.75 + 0.94 + 0.98
The closest answer to this sum among the options given is 0.68, so the probability that the portfolio outperforms its benchmark in three or fewer quarters over the course of a year is closest to 0.68.
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three cards are chosen at random from a standard -card deck. what is the probability that they are not all the same color?
The probability that three cards chosen at random from a standard 52-card deck that are not all the same color is 3/4.
Total number of combinations of three cards: There are 52 choose 3 = 22,100 ways to choose three cards from a standard deck of 52 cards.
Number of combinations that are not all the same color: There are two possibilities for the colors of the three cards:
a. Two red cards and one black card: There are 26 choose 2 ways to choose two red cards and 26 choose 1 ways to choose one black card, for a total of (26 choose 2) * (26 choose 1) = 325 * 26 = 8,450 combinations.
b. Two black cards and one red card: There are 26 choose 2 ways to choose two black cards and 26 choose 1 ways to choose one red card, for a total of (26 choose 2) * (26 choose 1) = 325 * 26 = 8,450 combinations.
The total number of combinations that are not all the same color is 8,450 + 8,450 = 16,900.
The probability that three cards chosen at random are not all the same color is:
P(not all the same color) = (number of combinations that are not all the same color) / (total number of combinations of three cards) = 16,900 / 22,100 = 3/4.
Therefore, the probability that three cards chosen at random from a standard 52-card deck are not all the same color is 3/4.
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in a certain town, the left-handed:right-handed ratio among children is 1:2. suppose a family has three children. define events: a: the family has children of both handedness b: the family has at most one right-handed child
The probability of the family having at most one right-handed child is [tex](2/3)^3 + 3 * (2/3)^2 * (1/3) = 0.593[/tex].
The probability of event A can be calculated using the formula P(A) = 1 - P(not A). Since the left-handed:right-handed ratio is 1:2, the probability of a child being right-handed is 2/3 and the probability of a child being left-handed is 1/3. Thus, the probability of the family having children of both handedness is[tex]1 - P(not A) = 1 - (2/3)^3 = 0.741[/tex].
The probability of event B can be calculated using the formula P(B) = P(not A) + P(A and B). Since the left-handed:right-handed ratio is 1:2, the probability of a child being right-handed is 2/3 and the probability of a child being left-handed is 1/3. Thus, the probability of the family having at most one right-handed child is[tex](2/3)^3 + 3 * (2/3)^2 * (1/3) = 0.593.[/tex]
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equation in point slope from of slope of 0.25 and point of (5,-2)
The equation is correct and the point (5,-2) is on the line.
The point slope equation of a line with slope 0.25 and a point (5,-2) would be y-(-2) = 0.25(x-5). This equation can be rearranged to y = 0.25x - 1.5.
Calculation:
y = 0.25x - 1.5
Plugging in x = 5
y = 0.25(5) - 1.5
y = -2
The point (5,-2) is on the line.
The point slope equation of a line with slope 0.25 and a point (5,-2) can be written as y-(-2) = 0.25(x-5) which can further be rearranged to y = 0.25x - 1.5. This equation can be further tested by plugging in the x value of the point (5) into the equation and the y value of the point (-2) should be obtained. This proves that the equation is correct and the point (5,-2) is on the line.
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enola wants to ride her bicycle 23.8 miles this week. she has already ridden 11 miles. if she rides for 4 more days, write and solve an equation which can be used to determine xx, the average number of miles she would have to ride each day to meet her goal.
Enola needs to ride 3.2 miles a day
In the given question enola wants to ride her bicycle 23.8 miles this week and she has already ridden 11 miles and if she rides for 4 more days the we have to write and solve an equation which can be used to determine xx, the average number of miles she would have to ride each day to meet her goal.
The target distance of 23.8 miles can be reached in 4 days if the average rate is x and 11 miles are travelled.
This can be expressed as equation:
4x + 11 = 23.8
Solve it for x:
4x = 23.8 - 11
4x = 12.8
x = 12.8/4
x = 3.2
The value of x is 3.2
So, Enola needs to ride 3.2km
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The picture below shows the graph of which inequality?
The graph shows the inequality x² ≤ 16
How find the inequality for the graph?An inequality is a relationship that makes a non-equal comparison between two numbers or other mathematical expressions e.g. 2x > 4.
Inequalities are often used to describe conditions or constraints in real-world problems.
You will notice that the values represented in the graph ranges from -4 to 4. Thus, solving x² ≤ 16 will produce these values. That is:
x² ≤ 16
x ≤ ±√16
x ≤ ±4
x ≤ -4 or x ≤ 4
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Pls show your work thank you will mark the Brainliest
Answer:
The answer to the problem is c
When you graph it x+2y <-2
y-x<3 you will get c
if you graphed the data points in a particular time series and a relatively flat, horizontal pattern was observed, the method that should be used to forecast the next point in the series would be
The correct answer is e, none of the above, as a relatively flat, horizontal pattern indicates the absence of a trend or seasonality making it difficult to use any of the mentioned methods for forecasting.
This type of pattern is commonly referred to as a "stationary time series" and may require different forecasting techniques such as moving averages or ARIMA models.
A stationary time series means that the statistical properties of the series, such as the mean and variance remain constant over time. This type of series may still exhibit random fluctuations and noise that need to be accounted for in the forecasting process. Moving averages are commonly used to smooth out the noise and highlight any underlying patterns in the data.
This question should be provided with answer choices, which are;
a. A horizontal method.b. An alpha method.c. A beta method.d. C trend analysis method.e. None of the above.Learn more about time series brainly.com/question/30698222
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(2-square root 3)^2 multiply
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.
Compute the probability of each of the following events.
Event A: The sum is greater than 6.
Event B: The sum is an odd number.
Write your answers as fractions.
The probabilities are given as follows:
Sum greater than 6: 7/12.Sum is an odd number: 1/2.How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes.
Each dice has six outcomes, hence the total number of outcomes when two dice are rolled is given as follows:
6² = 36.
The possible outcomes for the pair of dice are given as follows:
(1,1), (1,2), (1,3), (1,4), (1,5), (1,6)(2,1), (2,2), (2,3), (2,4), (2,5), (2,6)(3,1), (3,2), (3,3), (3,4), (3,5), (3,6)(4,1), (4,2), (4,3), (4,4), (4,5), (4,6)(5,1), (5,2), (5,3), (5,4), (5,5), (5,6)(6,1), (6,2), (6,3), (6,4), (6,5), (6,6)We can see a pattern of the sum, even-odd-even-odd and so on, hence the probability of an odd sum is given as follows:
p = 18/36 = 1/2.
For a sum greater than 6, the number of outcomes is given as follows
1 + 2 + 3 + 4 + 5 + 6 = 21.
Hence the probability is of:
p = 21/36
p = 7/12.
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Which pair shows 2 equivalent expressions?
A, 3d, d+d+d+3
B. 2g+g-2g,2g
C. 4y, y+y+2y
D. h+h+1, 3h
Answer:
C
Step-by-step explanation:
add each of them all up and you'll see only C 4y = the sum
Probability: It's either between C and D, am I correct?
Pete’s Pizzas charges $5.50 per pizza. Pete spent $200 in supplies to start his business. Write an equation to determine the total Profit, y, he will make after he sells x amount of pizzas.
a scuba diver plans to go on two dives in one day. in the first, she will descend to feet, and in the second she plans to descend to feet. estimate the difference between the depth of the two dives by first rounding to the nearest ten.
In linear equation, 30 is the depth of the two dives by first rounding to the nearest ten.
What in mathematics is a linear equation?
An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.
= 75-43 feet,
= 32 feet.
Round 32 to the nearest ten, and you get 30 feet.
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The complete question is -
A scuba diver plans to go on two dives in one day. In the first, she will descend to 75 feet, and in the second she plans to descend to 43 feet. Estimate the difference between the depth of the two dives by first rounding to the nearest ten.
A) 30 feet
B) 40 feet
C) 120 feet
D) 32 feet
PLEASEEE ANSWER FAST THIS IS TIMED Bernadette throws the javelin for her school’s track and field team. The graph below shows the height and horizontal distance traveled by the javelin for three of Bernadette’s practice throws.
Use the graph to determine the average rate of change over the interval (0,20) for Throw #3. To earn full credit, show your work using a method explained in the Orientation.
Answer:
Step-by-step explanation:
Average ROC is [tex]Change=\frac{f(b)-f(a)}{b-a} \\[/tex] so we need to look at the points (0,20) at 0 our y is 6 and at 20 its 12 so we have (0,6) and (20,12) we now use our formula so we have Change=[tex]\frac{12-6}{20-0} =\frac{6}{20} =\frac{3}{10}[/tex] so our answer is 3/10
plss help me
Express sin
�
S as a fraction in simplest terms.
By definition of trigonometric functions, the exact value of sine trigonometric function of angle S is equal to 2 / 9.
How to calculate the exact value of a trigonometric function
In this problem we find the case of a right triangle, of which two of its three sides are known, the hypotenuse (r) and the leg opposite to angle S (y). The exact value of sine trigonometric function is defined below:
sin S = y / r
sin S = QR / QS
sin S = 2 / 9
The sine trigonometric function of angle S is equal to 2 / 9.
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A company dyes two sizes of rugs. A small rug requires 8 hours for dyeing, and a medium-size rug requires 12 hours for dyeing. The dyers have to make at least 22 rugs, and they must do it in less than 240 hours. Let x equal small rugs and y equal medium rugs. Which of the following inequalities can be paired with x + y ≥ 22 to create a system that represents this situation?
8x + 12y > 240
12x + 8y > 240
8x + 12y < 240
12x + 8y < 240
The suitable inequality is 8x + 12y < 240
What is an inequality?Inequalities are the relationship two expressions which states that the two expressions are not equal. It is denoted by the symbols like < , >, ≤, ≥.
Given that x equal small rugs and y equals medium rugs.
A company needs 8 hours for dyeing small rugs then, 8x.
And it needs 12 hours for dyeing medium rugs then, 12y.
The company must do 22 rugs less than 240 hours.
So the inequality is 8x + 12y < 240, it is paired with x + y ≥ 22.
Hence the suitable inequality is 8x + 12y < 240.
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Halp.
What is the ratio of the sides from the big to the small rectangle?
Answer:
2:1
Step-by-step explanation:
We know
To get from F to G, we have to go from -2 to 2, for which the length is 4.
To get from F' to G', we have to go from -2 to 0, for which the length is 2.
What is the ratio of the sides from the big to the small rectangle?
The ratio is 4:2 = 2:1
What is 5,25 rounded to 2 decimals?
Answer:
5.3
Step-by-step explanation:
so, to round this up we need to look at the number beside 2
5 is always rounded up
so, 5.3
after running a chi-square test using the actual values and expected values, a p-value of 0.0000005 is obtained. is there a statistically significant association between the variables?
Yes, there is a statistically significant association between the variables when a p-value of 0.0000005 is obtained after running a chi-square test.
The p-value is the probability of observing a test statistic as extreme as the one calculated, assuming that the null hypothesis is true.
In most cases, if the p-value is less than 0.05 (5%), it is considered statistically significant. This means that there is less than a 5% chance that the results observed in the chi-square test are due to random chance, and that there is likely a real association between the variables being tested.
In the case of a p-value of 0.0000005, this is much less than 0.05 and therefore, it can be concluded that there is a statistically significant association between the variables.
This means that the observed differences between the actual values and expected values are not due to chance, but rather, there is a strong relationship between the two variables being tested.
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For 100 hundred points just tell me what needs to go into the circles if you know the answer thats better
The solution is, the value of lengths are x & 4.
What is area of a rectangle?Area of a rectangle (A) is the product of its length (l) and width (w).
A= l. w
here, we have,
from the given figure we get,
area = 5x+20
where, two rectangles are with areas 5x & 20
now, from the diagram we have,
the area as product = 5 ( x+ 4)
so, we get,
1st rectangle , length = 5,
area = 5x
so, width = x ,
again. 2nd rectangle, length = 5
area = 20
so. width = 4
Hence, The solution is, the value of lengths are x & 4.
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45 medals were given out at a band competition. There were 22 bronze medals and 14 silver medals. The rest were gold medals. What percentage of medals were gold medals?
Answer:
20%
Step-by-step explanation:
45
22 bronze
14 silver
so 45- 22 -14 =9 gold
9/45 = 1/5 =20%
Write the standard form of the quadratic function that has the indicated vertex and whose graph passes through the given point. Use a graphing utility to verify your result.
Vertex: (-1/3,-1) Point (0, -10/9)
The standard form of the quadratic function with the given vertex is f(x) = 9x² + 6x + 10.
What are Quadratic Functions?Quadratic functions are polynomial functions where the highest degree of the variable is 2..
The general form of a quadratic function is f(x) = ax² + b x + c.
We know that, graph of a quadratic function is parabola.
General equation of a parabola is a(x - h)² + k.
Here (h, k) is the vertex.
Given vertex = (-1/3, -1)
Substituting,
a(x - h)² + k = a(x + 1/3)² - 1
Also we have a point (x, y) = ((0, -10/9)
a(0 + 1/3)² - 1 = -10/9
a/9 - 1 = -10/9
a/9 = -1/9
a = -1
General form is -1(x + 1/3)² - 1 = -1(x² + 2/3 x + 1/9) - 1
= -x² - 2/3 x -10/9
= 9x² + 6x + 10
Hence the standard form of the function is f(x) = 9x² + 6x + 10
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a product is originally priced at $55 and is on sale for 25% off. how much is the discount
Answer: The discount is $13.75, which is found by multiplying the original price by the discount percentage, 0.25.
Step-by-step explanation:
Find the area of the region bounded by the line y=3x-6 and line y=-2x+8.
A: the x-axis.
B: the y-axis.
C: the line y=6
D: the line x=5
Please answer quickly and correctly thank you
The area of the region bounded by the lines y = 3x - 6 and y = -2x + 8 between the x-axis is 12/5 units.
What is the equation of a line?The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.
The given line equations are y=3x-6 and y=-2x+8.
Here, 3x - 6 = -2x + 8
Add 2x to both sides of the equation.
5x - 6 = 8
Add 6 to both sides of the equation.
5x = 14
Divide both sides of the equation by 5.
x = 14/5
Find the y-value where these points intersect by plugging this x-value back into either equation.
y = 3(14/5) - 6
Multiply and simplify.
y = 42/5 - 6
Multiply 6 by (5/5) to get common denominators.
y = 42/5 - 30/5
Subtract and simplify.
y = 12/5
These two lines intersect at the point 12/5. This is the height of the triangle formed by these two lines and the x-axis.
Now let's find the roots of these equations (where they touch the x-axis) so we can determine the base of the triangle.
Set both equations equal to 0.
(I) 0 = 3x - 6
Add 6 both sides of the equation.
6 = 3x
Divide both sides of the equation by 3.
x = 2
Set the second equation equal to 0.
(II) 0 = -2x + 8
Add 2x to both sides of the equation.
2x = 8
Divide both sides of the equation by 2.
x = 4
The base of the triangle is from (2,0) to (4,0), making it a length of 2 units.
The height of the triangle is 12/5 units.
Formula for the Area of a triangle:
A = 1/2bh
Substitute 2 for b and 14/5 for h.
A = 1/2 ×2 × 12/5
Multiply and simplify.
A = 12/5
Therefore, the area of the region bounded by the lines y = 3x - 6 and y = -2x + 8 between the x-axis is 12/5 units.
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Answer:
Step-by-step explanation:
Explain why 2 is NOT a solution of x 7 5
Based on the information provided, 2 is not a solution of x>5 because a possible solution requires a number greater than 5.
How to solve inequality?Inequalities include symbols such as >, ≤, ≥, among others that should be interpreted correctly to solve the inequality. In this case, the symbol in the inequality is >, which means greater than. Based on this, the value of x should be greater than 5, for example, 7, 19, 2948, etc.
Therefore, 2 is not a solution to the inequality x>5 because a number greater than 5 rather than less than 5 is required to solve this expression.
Note: This question is incorrect and incomplete; here is the complete question:
Explain why 2 is NOT a solution of x>5
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oscar finally found his dog on the fourth day. if he searched in a for two days and b for two days (not necessarily in that order) what is the probability that he found his dog. alive?
the probability that he found his dog. alive is 15%.
What is probability?
The chance of an event can be calculated using the probability formula by simply dividing the favourable number of possibilities by the total number of outcomes. The likelihood of an event occurring can be anything between 0 and 1, as the favourable number of outcomes can never exceed the total number of outcomes. Probability theory is a branch of mathematics that focuses on calculating the likelihood that an event will occur. Probability measures how likely something is to happen.
if he searched in a for two days and b for two days
P(A) = 0.4
P(B) = 0.6
P(Dn D-1 F-1)= n n+2
P(FnA, Sn, F-1) = 0.25
P(FB, S, F-1) = 0.15
Hence the probability that he found his dog. alive is 15%.
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What is the rage of g(x)?
The graph of f(x) = 1/2(2.5)x and it’s reflection across the x-axis, g(x), are shown.
The range of g(x) is all real numbers less than 0.
An easy definition of a function?
As a set of inputs with one output for each, a function is defined as a relationship between them.
A function, expressed simply, is an association between inputs where each input is connected to one and only one output.
The given function is
f(x) = 1/2(2.5)ˣ
If a graph reflected across x axis, then
(x,y) ⇒ (x, -y )
The function f(x) reflected across x-axis, so
g(X) = -f(x)
g(X) = -1/2(2.5)ˣ
It is an exponential function.
g(x) ⇒ -∞ as x⇒ ∞
g(X) ⇒ 0 as x ⇒ - ∞
Since the value of g(x) lies between ∞ and 0, therefore the range of g(x) is all real numbers less than 0.
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An image of a rhombus is shown.
What is the area of the rhombus?
The area of the rhombus is 384 cm²
What is the area of Rhombus?The diagonals of a rhombus are the lines that connect the opposite vertices (corners) in the center of the shape. The diagonals of a rhombus are perpendicular and form four right triangles through their intersection
Area of Rhombus = d₁ x d₂
Area of Rhombus = base x height
Given data ,
Let the area of the Rhombus be represented as A
Now , the value of A is
Let the base of the rhombus be B = 20 cm
Let the height of the rhombus be H = 19.2 cm
Now , the area of the rhombus = base x height
Substituting the values in the equation , we get
Area of Rhombus A = 19.2 x 20
Area of Rhombus A = 384 cm²
Hence , the area of the rhombus is 384 cm²
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