An obtuse triangle and right angle triangle can always be used as counter examples to the given statement.
What is acute angle?
An angle which is measuring less than 90 degrees is called an acute angle. This angle is smaller than the right angle
What is obtuse angle?
An obtuse angle is a type of angle that is always larger than 90° but less than 180°. In other words, it lies between 90° and 180°.
What is right angle?
A right angle is an angle of exactly 90 degrees or \pi /2 radians corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles..
Hence, an obtuse triangle and right angle triangle can always be used as counterexamples to the given statement " All angles in a triangle are acute".
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James takes out a loan of 9000 euros which keeps on charging simple interest at a rate of 3% of the original amount per annum until it is cleared. James pays of 770 euros each year to reduce the loan. After how many years will James have fully cleared the loan?
James will fully clear the loan after approximately 12 years when the remaining balance reaches zero.
To determine the number of years it will take for James to fully clear the loan, we need to calculate the remaining balance after each payment and divide the initial loan amount by the annual payment until the remaining balance reaches zero.
The loan amount is 9000 euros, and James pays off 770 euros each year. Since the interest is charged at a rate of 3% of the original amount per annum, the interest for each year will be \(0.03 \times 9000 = 270\) euros.
In the first year, James pays off 770 euros, and the interest on the remaining balance of 9000 - 770 = 8230 euros is \(8230 \times 0.03 = 246.9\)euros. Therefore, the remaining balance after the first year is 8230 + 246.9 = 8476.9 euros.
In the second year, James again pays off 770 euros, and the interest on the remaining balance of 8476.9 - 770 = 7706.9 euros is \(7706.9 \times 0.03 = 231.21\) euros. The remaining balance after the second year is 7706.9 + 231.21 = 7938.11 euros.
This process continues until the remaining balance reaches zero. We can set up the equation \((9000 - x) + 0.03 \times (9000 - x) = x\), where x represents the remaining balance.
Simplifying the equation, we get 9000 - x + 270 - 0.03x = x.
Combining like terms, we have 9000 + 270 = 1.04x.
Solving for x, we find x = 9270 / 1.04 = 8913.46 euros.
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1. The relationship between a statistic and a parameter is the same as the relationship between:
A. a sample and a population
B. a statistic and a parameter
C. a parameter and a population
D. descriptive statistics and inferential statistics
The relationship between a statistic and a parameter is the same as the relationship between , Option(A) a sample and a population
The Population is defied as an entire group of individuals that we are interested in studying, while a sample is a subset of that population that we actually observe and collect data from.
A Parameter is defined as a numerical characteristic of a population, such as its mean or variance, whereas a statistic is a numerical characteristic of a sample, such as its sample mean or sample standard deviation.
The relationship between a sample and a population is similar to the relationship between a statistic and a parameter because a sample is used to estimate information about the population, and a statistic is used to estimate information about a parameter.
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solve the equation for y7x + 4y = 8
To solve the equation for a variable we need to isolate the variable on the left side of the equation. The expression is:
\(7x+4y=8\)To start we need to subtract by "7x" on both sides of the equation.
\(\begin{gathered} 7x+4y-7x=8-7x \\ 4y=8-7x \end{gathered}\)We then need to divide both sides by 4.
\(\begin{gathered} \frac{4y}{4}=\frac{8-7x}{4} \\ y=\frac{8-7x}{4} \end{gathered}\)A multiple choice test has 10 questions each of which has 4 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly?
a-0.2816
b-0.0021
c-0.5006
d-0.0156
e-0.2503
option a-0.2816. To find the probability that Judy will answer exactly 3 questions correctly, we can use the binomial probability formula. In this case, the number of trials is 10 (since there are 10 questions), the probability of success is 1/4 (since there is only one correct answer out of 4 possible choices), and we want to find the probability of getting exactly 3 successes.
The binomial probability formula is:
P(X=k) = (n choose k) * p^k * (1-p)^(n-k)
Where:
- P(X=k) is the probability of getting exactly k successes
- (n choose k) represents the number of ways to choose k items out of n items
- p is the probability of success on a single trial
- k is the number of successes
- n is the number of trials
Using this formula, we can calculate the probability as follows:
P(X=3) = (10 choose 3) * (1/4)^3 * (3/4)^(10-3)
(10 choose 3) = 10! / (3! * (10-3)!)
= 10! / (3! * 7!)
= (10 * 9 * 8) / (3 * 2 * 1)
= 120
Now we can substitute the values into the formula:
P(X=3) = 120 * (1/4)^3 * (3/4)^(10-3)
= 120 * (1/64) * (3/4)^7
= 120 * (1/64) * (2187/16384)
= 0.2816
Therefore, the probability that Judy will answer exactly 3 questions correctly is 0.2816.
The correct answer is option a-0.2816.
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Chris tried to rewrite the expression \left( 4^{-2} \cdot 4^{-3} \right)^{3}(4
−2
⋅4
−3
)
3
left parenthesis, 4, start superscript, minus, 2, end superscript, dot, 4, start superscript, minus, 3, end superscript, right parenthesis, cubed.
\begin{aligned} &\phantom{=}\left( 4^{-2} \cdot 4^{-3} \right)^{3} \\\\ &=\left( 4^{-5} \right)^{3}&\text{Step } 1 \\\\ &=4^{-2}&\text{Step } 2 \\\\ &=\dfrac{1}{4^{2}}&\text{Step } 3 \end{aligned}
=(4
−2
⋅4
−3
)
3
=(4
−5
)
3
=4
−2
=
4
2
1
Step 1
Step 2
Step 3
Did Chris make a mistake? If so, in which step?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Chris did not make a mistake.
(Choice B)
B
Chris made a mistake in Step 1.
(Choice C)
C
Chris made a mistake in Step 2.
(Choice D)
D
Chris made a mistake in Step 3.
We have been given an expression \(\left( 4^{-2} \cdot 4^{-3} \right)^{3}\). We have been given steps how Chris tried to solve the given expression. We are asked to choose the correct option about Chris's work.
Let us simplify our given expression.
Using exponent property, \(a^m\cdot a^n=a^{m+n}\), we cab rewrite our given expression as:
\(\left( 4^{-2+(-3)} \right)^{3}\)
\(\left( 4^{-5} \right)^{3}\)
Now we will use exponent property \((a^m)^n=a^{m\cdot n}\)to further simplify our expression.
\(\left( 4^{-5} \right)^{3}= 4^{-5\cdot 3}\)
\(\left( 4^{-5} \right)^{3}= 4^{-15}\)
Therefore, Chris made mistake in step 2.
Approximate the area under the function
between a and b using a right-hand sum
with the given number of intervals.
f(x) = x² + 2
120
100
80
60
40
20
a 0 1 2
a = o
3 4 5 6
b = 10
7 8 9 b=10
5 Intervals
First, calculate how wide each rectangle
will be by finding the distance from a to b
and dividing by the number of intervals.
ab = [?]
5
Note that the area under the curve - f(x) = x² + 2 between a and b using the right-hand sum with the given number of intervals is 460.
Given f( x) = x ² + 2, and
a = 0
b = 10 and
n = 5 intervals
Δx = h = b-a/n
= 10 - 0/5
= 2
Now, let's calculate the right-hand sum approximation:
Approximation = Σ((xi)² + 2) * Δx) from i = 1 to n
We'll evaluate f(x) = x² + 2 at the right endpoint of each subinterval and sum up the areas of the rectangles.
For i = 1:
xi = a + (i * Δx) = 0 + (1 * 2) = 2
f(xi) = f(2) = 2² + 2 = 6
Area of rectangle = f(xi) * Δx = 6 * 2 = 12
For i = 2:
= 0 + (2 * 2) = 4
f(xi) = 18
Area of rectangle
= 18 x 2 = 36
For i = 3:
xi = 6
f(xi) = 38
Area of rectangle = 76
For i = 4:
xi = 8
f(xi) = 66
Area of rectangle = 132
For i = 5:
xi == 10
f(xi) = f(10) = 102
Area of rectangle = 204
Summing up the areas of all the rectangles we have -
Approximation = 12 + 36 + 76 + 132 + 204
= 460
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Find the measure of angle A
(Please provide work)
A typical car traveling at highway speeds ( 100 kph ≈ 28 m/s) is capable of stopping in about 55 m at maximum braking. Estimate the acceleration of the car during braking.
Answer:
~1.96 m/s
Step-by-step explanation:
55 / 28 meters per second. Distance / velocity = acceleration
The acceleration of the body is 7.23 m/s²
What is Newton's 1st law of motion ?
A body in motion will remains in motion and a body at rest remains at rest until any external force is applied on it.
In the given question it is given that the car is travelling at some initial velocity u of 28m/s and it come to rest after applying break that is final velocity v equals zero and the distance travelled by the car s is 55m.
Now using 3nd equation of motion to find the acceleration of car :
\(\begin{aligned}v^{2}&=u^{2}+2as\\0^2&=28^2+2a\cdot55\\a&=\frac{-28^2}{2\cdot55}\\&\approx 7.13 \text{ m/s}^2\end{aligned}\)
therefore, the acceleration of the body is 7.23 m/s²
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What is the square root of 8 and 24?
Answer:
√8 = 2.828427125
√24 = 4.89897948557
Simplify expression plz help
Answer: The answer equals 0
Quinn had $4.00. He spent 1/2 of his money on chips, 1/4 of his money on a drink, and 1/8 of his money on gum. How much money does Quinn have left?
If the answers good you get bonus points so you can ask more questions!
Answer:
.50$
Step-by-step explanation:
When you add 1/2, 1/4, and 1/8 you get 7/8. We now know that Quinn spent 7/8 of 4.00$. We multiply 7/8 and 400 and we get 350. That means he spent 3.50$. 4.00-3.50= .50$
Answer:
3.50
Step-by-step explanation:
2.00+1.00+.50=3.50
help!!!!!!!!!!!!!!!!!!!!!
Answer:
THE FIRST AND THIRD ONE
Step-by-step explanation:
You devide 60 by the amount of points you could put. For the first one you are counting up by 10s and the third one you are counting up by 20s
At the toy store, 3 toy cars cost $2.37. How much does it cost to buy 30 toy cars?
Answer:
23.7
Step-by-step explanation:
Multiply 2.37 by 10
Answer:
$23.70
Step-by-step explanation:
3 toy cars
Each cost $2.37
How much does 30 toy cars cost
________________________________
We know that 3 toy cars cost 2 dollars and 37 cents. To solve, we first need to find what times 3 gets us 30.
3 * ? = 30
30 / 3
10
Therefore you need to multiply the amount of toy cars by 10 to get thirty toy cars, since three of them cost 2.37, multiply 10 by 2.37.
$2.37 * 10
$23.70
Why are Fortune 500 companies engaging, in blogging? What sources capital for a project by raising many small amounts from a large number of individuals, typically via the Internet?
A popular way for people to share information and thoughts with others online is through blogging.
A blog is a conversation or informational website published on the World Wide Web that is composed of discrete, frequently informal diary-style text posts, according to the definition of a blog provided by Wikipedia.
This has given rise to a brand-new trend where everyone may now voice their opinions on a given subject.
Other phenomena and artefacts, such as analogue signals, poetry, photographs, music, or other sounds, as well as electrical currents, transmit information in a more continuous manner than do digital signals and other data, which employ discrete signs or algebras to do so.
Information itself is not knowledge, but how it is interpreted is crucial. Raw information can also take the shape of structured data. A collection of data may contain information that may be extracted through analysis by analysts who are experts in their field.
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What type of number is -15/3
a. whole number
b. integer
c. rational
d. irrational
(MULTIPLE CHOICE)
Answer:
integer
Step-by-step explanation:
the answer is interesting
A line that includes the point (2, 8) has a slope of 8. What is its equation in slope-intercept
form?
Answer:
y = 8x - 8
Step-by-step explanation:
y-8 = 8(x-2)
y-8 = 8x - 16
y = 8x - 16 + 8
y = 8x - 8
Answer:
y=8x-8
Step-by-step explanation:
slope intercept form is y=mx+b
Where m is slope and b is y intercept
We can fill in for m
y=8x+b
Now we can fill the coordinates we know to find b
8=8(2)+b
8=16+b
-16 -16
-8=b
Now we know b
y=8x-8
Hopes this helps please mark brainliest
PLEASE HELP!!
Which is the simplified form of the expression
1 - StartFraction 1 Over q Superscript 30 Baseline EndFraction
2 - q Superscript 30
3 - StartFraction p Superscript 12 Baseline Over q Superscript 60 Baseline EndFraction
4 - p Superscript 12 Baseline q Superscript 60
Answer:
1/q^30
Step-by-step explanation:
Simplified
Can someone help please?
Answer:
It’s either A or C. However I’m mostly going with C. For C tells us 2 hours and 23 minutes have passed. I hope this helps.
Step-by-step explanation:
Please correct me if I am wrong.
Use the rectangle FOUR to find the value of x.
in FU = 38, RQ = 2x + 9.
Answer:
x = 5
Explanation:
2x + 9 = 19
2x = 10
x = 5
Applying the properties of the diagonal of a rectangle, the value of x is determined as: 5.
Diagonals of a RectangleThe diagonals of a rectangle are of equal length.The diagonals of a rectangle bisects each other into two equal halves.FU and RO are diagonals of rectangle FOUR.Therefore:
2(RQ) = FU
Substitute
2(2x + 9) = 38
4x + 18 = 38
4x = 38 - 18
4x = 20
x = 5
Thus, applying the properties of the diagonal of a rectangle, the value of x is determined as: 5.
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I need help pls and thank you
Answer:
12 in, 7 in
Step-by-step explanation:
The area of a rectangle is the product of length and width. Here, you are given the area, and an additional relation between length and width.
SetupThe two relations between length and width described by this problem are ...
A = LW . . . . . . . dimensions are of a rectangle
L = W +5 . . . . . . length is 5 inches more than width
A = 84 . . . . . . . . area in square inches
SolutionSubstituting for L and A in the area formula, we have ...
84 = (W +5)(W)
We can solve this as a quadratic in any of several ways. One of those ways is by factoring.
Essentially, we're looking for factors of 84 that differ by 5. We can consider different factorizations of 84 to see what we get:
84 = 84×1 = 42×2 = 28×3 = 21×4 = 14×6 = 12×7
The differences between the factors in these pairs are 83, 40, 25, 17, 8, 5.
This means the last pair, with a difference of 5, is the one we're looking for.
W+5 = 12, W = 7
The rectangle is 12 inches long and 7 inches wide.
__
Additional comment
As a quadratic in standard form, we would have ...
W² +5W -84 = 0 ⇒ (W +12)(W -7) = 0 ⇒ W = {7, -12}
If you were to solve this by completing the square, you would have ...
(W +2.5)² = 90.25 ⇒ W = -2.5 ±9.5 = {7, -12}
Multiply and simplify if possible. (2sqrt3x -2)(3sqrt3x +5)
show work
The expression is simplified to give 2(9x + 2√3x - 5)
How to determine the valueFirst, we need to know that surds are mathematical forms that can no longer be simplified to smaller forms
From the information given, we have that;
(2√3x - 2)(3√3x + 5)
expand the bracket, we get;
6√9x² + 5(2√3x) - 6√3x - 10
Find the square root factor
6(3x) + 10√3x - 6√3x - 10
collect the like terms, we have;
18x + 4√3x - 10
Factorize the expression, we have;
2(9x + 2√3x - 5)
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–2 • 4? what is the anserw do you now
Answer:
Step-by-step explanation:
-8 because a negative times a positive is a negative so w times 4 equals I and since it’s a negative sign it’s -8
Find the slope and the y-intercept of the line.
1
y=-x+5
4
*x+5
slope:
8
08
Undefined
X Х
y-intercept: 0
6
Slope is -1/4
Y intercept is 5
Beginning on January 1, park rangers in Everglades National Park began recording the water level for one particularly dry area of the park. The water level was initially 2.5 ft and decreased by approximately 0.015 f(t)/(d)ay.
Starting on January 1, park rangers in Everglades National Park began monitoring the water level of a specific park area. Initially, the water level was recorded as 2.5 feet.
Over time, the water level decreased by approximately 0.015 feet per day. This information is essential for tracking changes in the ecosystem of the National Park and understanding how climate factors are affecting the environment, we'll break it down step by step:
1. On January 1, the water level in Everglades National Park for a particularly dry area was initially 2.5 ft.
2. The water level decreased at 0.015 ft per day.
Now, to find the water level at a given day "t", you can use the following equation:
Water level = Initial water level - (Rate of decrease × Number of days)
Where:
- Initial water level = 2.5 ft
- Rate of decrease = 0.015 ft/day
- Number of days = t
So the equation becomes:
Water level = 2.5 - (0.015 × t)
By plugging in the desired day "t" into the equation, you can determine the water level on that specific day.
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A student evaluates the expressions 3x+3 and 2x+6 at several different values of . The student claims, "The value of the expression 3x+3 is always greater than the value of the expression 2x+6." Which value of x can be used to show that the student's claim is false? what is the value of x A. 2 B. 4 C. 6 D. 8
Option (A). 2 is the correct option that will claim the student statement "The value of the expression 3x+3 is always greater than the value of the expression 2x+6." as false.
Expression:
Expression means the sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division.
Given,
A student evaluates the expressions 3x+3 and 2x+6 at several different values of .
The student claims, "The value of the expression 3x+3 is always greater than the value of the expression 2x+6."
Here we need to find value of x can be used to show that the student's claim is false.
For that, we have to verify each value in order to find the correct one,
Then,
Let option (A) x = 2
=> 3(2) + 3 = 2(2) + 6
=> 6 + 3 = 4 + 6
=> 9 < 10
Now we have to apply the other option (B),
Let x = 4, then
=> 3(4) + 3 = 2(4) + 6
=> 12 + 3 = 8 + 6
=> 15 > 14
Now we have to apply the other option (C),
Let x = 6, then
=> 3(6) + 3 = 2(6) + 6
=> 18 + 3 = 12 + 6
=> 21 > 18
Now we have to apply the other option (D),
Let x = 6, then
=> 3(8) + 3 = 2(8) + 6
=> 24 + 3 = 16 + 6
=> 27 > 22
So, the correct option is (A) x = 2.
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i need help with question
The furthest apart the ants could be in the cuboid-shaped room is 20.81 meters.
To find the furthest apart the ants could be in the cuboid-shaped room, we need to determine the diagonal distance between two opposite corners of the room.
Using the formula for the diagonal of a cuboid, which can be derived from the Pythagorean theorem, we have:
Diagonal = √(length² + width² + height²)
Substituting the given dimensions, we get:
Diagonal = √(16² + 13² + 3²)
= √(256 + 169 + 9)
= √(434)
= 20.81 meters
Therefore, the furthest apart the ants could be in the cuboid-shaped room is 20.81 meters.
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The newborn death rate is calculated by dividing the number of newborn deaths by _____ and multiplying by 100.
The newborn death rate is calculated by dividing the number of newborn deaths by the number of live births and multiplying by 100.
The newborn death rate, also known as the neonatal mortality rate, is a critical indicator used in public health to assess the health and well-being of newborns. It is calculated by dividing the number of newborn deaths within a specified period by the number of live births during the same period and then multiplying the result by 100.
This calculation is performed to express the newborn death rate as a percentage, making it easier to interpret and compare across different populations or time periods. By dividing the number of deaths by the number of live births, we obtain the proportion of newborns who die within a certain timeframe. Multiplying this proportion by 100 provides the rate per 100 live births, which allows for a standardized measure of comparison.
The newborn death rate is a crucial statistic in assessing the quality of healthcare services, identifying areas with high mortality rates, and monitoring the effectiveness of interventions aimed at reducing neonatal deaths. It serves as a vital tool for policymakers, healthcare professionals, and researchers in evaluating and improving newborn health outcomes.
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the equation of the horizontal asymptote for the graph of y = (2-e¹/x)/(2+e¹/x)
Answer:
y = 1/3
Step-by-step explanation:
The equation of the horizontal asymptote can be found by finding the limit of the function as x approaches infinity:
\(\displaystyle \lim_{x\rightarrow\infty}\frac{2-e^{\frac{1}{x}}}{2+e^{\frac{1}{x}}}=\frac{2-e^0}{2+e^0}=\frac{2-1}{2+1}=\frac{1}{3}\)
The equation of the horizontal asymptote for the graph of y = (2 - e^(1/x))/(2 + e^(1/x)) is y = 1.
As x approaches positive infinity, the terms involving e^(1/x) become negligible compared to the constant terms.
Therefore, the function approaches the value 2/2 = 1.
This means that y = 1 is the horizontal asymptote as x approaches positive infinity.
Similarly, as x approaches negative infinity, the terms involving e^(1/x) become negligible compared to the constant terms.
Again, the function approaches the value 2/2 = 1.
Therefore, y = 1 is also the horizontal asymptote as x approaches negative infinity.
In summary, the equation of the horizontal asymptote for the graph of y = (2 - e^(1/x))/(2 + e^(1/x)) is y = 1.
This indicates that as x moves towards positive or negative infinity, the function approaches the horizontal line y = 1.
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A salesperson earns $6 in 1/2 hour. Write an equation to show the relationship between the money a salesperson earns, m, and the hours he works, h.
The equation of the salesperson earning $6 in 1/2 hour will be m = 12h.
In mathematics, expression is defined as the relationship of numbers, variables, and functions using mathematical signs such as addition, subtraction, multiplication, and division.
To find the relationship between the money a salesperson earns, m, and the hours he works, h, we can use the given information that the salesperson earns $6 in 1/2 hour. We can write this as a rate:
$6 / 1/2 hour = $12/hour
This means that the salesperson earns $12 for every hour worked. To write an equation for the relationship between the money earned and the hours worked, we can use the formula:
m = r x h
Where m is the amount of money earned, r is the hourly rate, and h is the number of hours worked.
Substituting the values we found, we get:
m = $12/hour x h
Simplifying the equation, we get:
m = 12h
Therefore, the equation that shows the relationship between the money a salesperson earns, m, and the hours he works, h, is:
m = 12h
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Witch Expression is less than 1?
A. 4 divided by 2/3
B. 3/4 divided by 2/3
C. 14/8 divided by 15/8
D. 2 4/8 divided by 1 5/8
:)
Answer: The answer is C because C is 14/15
Step-by-step explanation: