Answer:
Yes.
Step-by-step explanation:
since area is length x the width, so in this case it would be 25 x 4 = 100
I need help with this question
Answer:
1/3
Step-by-step explanation:
13/39 = 1/3
Answer:
It is 1/3
Step-by-step explanation:
because 13/39=1/3
The t-statistic or t-ratio is used to test the statistical significance overall regression model used to test the statistical significance of each β i used to test to see if an additional variable which has not been observed should be included in the regression model is close to zero when the regression model is statistically significant none of the above
The correct statement is:
The t-statistic or t-ratio is used to test the statistical significance of each β_i in a regression model.
The t-statistic is calculated by dividing the difference between the sample mean and the hypothesized population mean by the standard error of the sample mean.
The formula for the t-statistic is as follows:
t = (sample mean - hypothesized population mean) / (standard error of the sample mean)
The t-statistic or t-ratio is used to test the statistical significance of each β_i (regression coefficient) in a regression model. It measures the ratio of the estimated coefficient to its standard error and is used to determine if the coefficient is significantly different from zero.
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What is the value of the discriminant for this quadratic: (1/4)x²+4=y
Answer:
-4
Explanation:
Given any quadratic function of the form:
\(y=ax^2+bx+c\)Its discriminant is obtained by using the formula:
\(D=b^2-4ac\)Comparing our given equation with the form of a quadratic above, we have:
\(y=\frac{1}{4}x^2+4\text{ }where\begin{cases}a=\frac{1}{4} \\ b=0 \\ c=4\end{cases}\)Therefore, the discriminant will be:
\(D=b^2-4ac=0^2-4(\frac{1}{4})(4)=0-4=-4\)The value of the discriminant for the given quadratic is -4.
Please help me solve this!!
Answer:
12.8
Step-by-step explanation:
tan(theta) = opposite/adjacent
in this question, theta should be 59 deg, opposite is EF which is x, and adjacent is DE which is 7.7
So plug in these data
tan(59deg) = x/7.7 ==> x = 7.7 * tan(59deg) ~~12.8
Whats the maximum value?
Answer:
66
Step-by-step explanation:
Step-by-step explanation:
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The order of operations is a rule that tells the correct sequence of steps for evaluating a math expression. We can remember the order using
Answer:
PEMDAS or BIDMAS
Step-by-step explanation:
You want to know how to remember the order of operations.
AcronymsCommonly used acronyms for the Order of Operations are ...
PEMDAS
BIDMAS
The letters of these stand for ...
P, B — parentheses or brackets
E, I — exponents or indices
M, D — multiplication and division
A, S — addition and subtraction
PrecedenceExpressions enclosed in grouping symbols (parentheses or brackets) have the highest precedence. They are evaluated first, according to the order of operations.
Exponents (indices) are evaluated next. A sequence of exponent operations, such as a^b^c is evaluated right to left, as a^(b^c), unless parentheses modify the order.
Because exponents and indices have a higher precedence than other arithmetic operations, something like 2^3x is evaluated as (2^3)x, not 2^(3x), and √2p is (√2)p, not √(2p). It is fairly common to see a square root erroneously written as 3^1/2 = (3^1)/2 = 3/2 when 3^(1/2) = √3 is intended.
Multiplication and division have the same precedence. Even though M precedes D (or D precedes M, depending on which acronym you use), they are evaluated in order of appearance left to right. As with exponents, a common error is forgetting to put parentheses around numerators and denominators. For example, 3/2π is different from 3/(2π).
Similarly, addition and subtraction have the same precedence and are evaluated in order of appearance, left to right.
CompositionThe composition (ring) operator (∘) is used to signify a sequence of functional or transformation operations. For example (f∘g)(x) is the composition of functions f and g. The functions or transformations in a composition are evaluated right to left:
(f∘g)(x) = f(g(x))
Special notationsOperations performed on functions can be written in confusing ways. For example, ...
\(y = f^{-1}(x)\qquad\text{means }x=f(y),\text{ not }y=\dfrac{1}{f(x)}\)
The notation using a positive exponent stands in contrast:
\(\sin^4(x)\qquad\text{usually means }(\sin(x))^4,\text{ not }\sin(\sin(\sin(\sin(x))))\)
On the other hand, an exponent applied to a function name can mean recursive application of the function, as in sin²( ) = sin(sin(...)). It can also mean an n-th derivative. Context is important in such situations.
A box contains 5 red and 5 blue marbles. Two marbles are withdrawn randomly. If they are the same color, then you win $1.10; if they are different colors, then you win -$1.00. (That is, you lose $1.00.) Calculate
(a) the expected value of the amount you win;
(b) the variance of the amount you win.
(a) The expected value of the amount you win will be -0.0667.
(b) The variance of the amount you win will be 1.089.
(a) the expected value of the amount you win 2/9 , (b) the variance of the amount you win 5/18 , c) The expected value of the amount you win is -$0.0667 and d)The variance of the amount you win is 1.2898.
Let's calculate the expected value and variance of the amount you win step by step:
a) Calculate the probability of drawing two marbles of the same color.
First, calculate the probability of drawing two red marbles:
P(RR) = (5/10) * (4/9) = 20/90 = 2/9
Similarly, calculate the probability of drawing two blue marbles:
P(BB) = (5/10) * (4/9) = 20/90 = 2/9
b) Calculate the probability of drawing two marbles of different colors.
P(RB) = (5/10) * (5/9) = 25/90 = 5/18
P(BR) = (5/10) * (5/9) = 25/90 = 5/18
c) Calculate the expected value.
The expected value (EV) is calculated by multiplying each outcome by its probability and summing them up.
EV = (P(RR) * $1.10) + (P(RB) * -$1.00) + (P(BR) * -$1.00) + (P(BB) * $1.10)
= (2/9 * $1.10) + (5/18 * -$1.00) + (5/18 * -$1.00) + (2/9 * $1.10)
= $0.2444 - $0.2778 - $0.2778 + $0.2444
= -$0.0667
Therefore, the expected value of the amount you win is -$0.0667.
d) Calculate the variance.
The variance is a measure of the dispersion of the outcomes around the expected value. It is calculated as the sum of the squared differences between each outcome and the expected value, weighted by their probabilities.
Variance = (P(RR) * ($1.10 - EV)²) + (P(RB) * (-$1.00 - EV)²) + (P(BR) * (-$1.00 - EV)²) + (P(BB) * ($1.10 - EV)²)
Variance = (2/9 * ($1.10 - (-$0.0667))²) + (5/18 * (-$1.00 - (-$0.0667))²) + (5/18 * (-$1.00 - (-$0.0667))²) + (2/9 * ($1.10 - (-$0.0667))²)
= (2/9 * $1.1667²) + (5/18 * -$0.9333²) + (5/18 * -$0.9333²) + (2/9 * $1.1667²)
= 1.2898
Therefore, the variance of the amount you win is 1.2898.
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Jillian's puppy weighed 16 pounds at the age of 2 months. It weighed 60 pounds at the age of 8 months. What is the percent change in the puppy's weight?
Answer:the percent change in the puppy's weight= 275%
Step-by-step explanation:
Jillian's puppy Weight at 2 months =16 pounds
Jillian's puppy Weight at 8 months =60 pounds
percent change in the puppy's weight= change in weight / Old weight x 100
(60 pounds -16pounds ) / 16 x 100
44/16 x 100 = 275%
In a rhombus MNLP, diagonals intersect each other at point O. If m∠MNL is 120° and the length of the side is 8 in, find m∠MNO, m∠MON, and NP. A (5pts) Find m∠MNO. Answer
In a rhombus, all sides are equal and the diagonals intersect each other at a 90 degree angle and bisect each other.
Diagonal of a rhombus bisects the angles of the rhombus at the vertex.
So as m∠MNL is 120°,
∠MNO = ∠LNO = 120/2 = 60°
The diagonals intersect each other at a 90 degree angle, therefore
m∠MON = 90°
Considering ΔMNO, right angled at O.
cos(∠MNO) = NO/ MN
cos(60) = NO/ 8
NO = 0.5×8 = 4
NP = NO + OP
NP = 2NO
NP = 2×4
NP = 8 in
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What is the distance between -12 and 4 on the number line?
Answer:
13 inches
Step-by-step explanation:
Which is cheaper? Please help!!
Answer:
first one
Step-by-step explanation:
A student-faculty government committee of 4 people is to be formed from 16 student volunteers and 5 faculty volunteers. Find the probability that the committee will consist of the following, assuming the selection is made at random: (a) All faculty members. Round your answer to five decimal places. The probability that the committee will consist of all faculty members is (b) Two students and two faculty members.Round your answer to five decimal places. The probability that the committee will consist of two students and two faculty members is (c) All students. Round your answer to five decimal places. The probability that the committee will consist of all students is (d) One faculty member and three students. Round your answer to five decimal places. The probability that the committee will consist of one faculty member and three students is
16 student volunteers and 5 faculty volunteers will make up the four-person student-faculty government committee. the probability of the likelihood that the following members will be on the committee:
A) All academic staff
Probability is equal to 5C4 / 21C4 or 5/5985.
The likelihood that the committee will be made up of only academics is 0.000835.
b) Two pupils and two professors equal (16C2 x 5C2) / 21C4.
There is a 0.40100 chance that the committee will be made up of two students and two faculty members.
b) All pupils = 16C4 / 21C4 = 1820 / 5985
The likelihood that every student will be represented on the committee is 0.30409
d) Three students and one professor equal 5c1 * 16c3 / 21c4 or 5 * 560 / 5985.
There is a 0.46783 percent chance that the committee will be made up of one professor member and three students.
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You ran into Pedro's for a quick lunch and spent
$12. You left an 18% tip. How much was your total?
Answer:
The total answer is $14.16 because the tip would be $2.16 so add it with 12 and you get $14.16.
The measures of the bases of a trapezoid are 14 and 20. What is the measure of the median of the trapezoid?
The median of the trapezoid is = 17
calculation of the median of a trapezoidA trapezoid is a quadrilateral with one pair of opposite sides parallel. It has parallel sides which are known as the bases.
The base of the trapezoid(B1) =14
The base of the trapezoid (B2) = 20
To calculate the median = half the sum of the base of the trapezoid given.
Therefore,
14+20/2
34/2= 17
Therefore, the median of the trapezoid is = 17
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is -21/4 irrational or rational
Answer:
rational
Step-by-step explanation:
If a number can be written or can be converted to p/q form, where p and q are integers and q is a non-zero number, then it is said to be rational and if it cannot be written in this form, then it is irrational. hope that helped
If you take a number, times by 8 then add 6. You get the same as if you took the number, times by 3 then subtract 7. What is the number?
I don't say you have to mark my ans as brainliest but if it has really helped u plz don't forget to thank me....
please help!! I'm super confused
Answer:
c = 0
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
6*(2*c)-((62)*c)=0
Step by step solution :
STEP
1:
Solving a Single Variable Equation:
1.1 Solve : -50c = 0
Multiply both sides of the equation by (-1) : 50c = 0
Divide both sides of the equation by 50:
c = 0
Answer:
Step-by-step explanation:
6x(2xc)=(6x2)xc
Keep in mind that the dot is a multiplcation sign too if you don't know that.
6(2xc)=(6x2)c
12c=12c
c=1
Tell me if this is right or wrong and if you can you fix it
Answer:
Your answers are correct; decreases by 31.50
Step-by-step explanation:
The number seven help please
Answer:
The answer is D
Step-by-step explanation:
The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area of the rectangle should be written as
The area of the rectangle should be written as 0.682 m². To determine the area of a rectangle, you multiply its length by its width. The length of the rectangle is 1.125 m, and the width is 0.606 m.
Area of rectangle = length x widthA = 1.125 m x 0.606 mA = 0.68175 m²Now, rounding the answer to the correct number of significant figures, which is 3. The digit after the third significant figure is 7 which is greater than 5, therefore the third digit should be rounded up. So the final answer will be 0.682 m².
Thus, the long answer to this question is: After multiplying the length and width of a rectangle of dimensions 1.125 m and 0.606 m respectively, the product obtained from the calculator is 0.68175. To find the area of the rectangle, we use the formula A = l × w, which gives A = 1.125 m × 0.606 m = 0.68175 m². Rounding this answer to 3 significant figures, we find that the third digit is 1 which is greater than 5. Therefore, we must round the third digit up to get the final answer of 0.682 m².
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Can someone help me with this. Will Mark brainliest.
Answer:
(in degrees)
x = 15.09478709
Step-by-step explanation:
sin(x) = 25/96
A car rental company's standard charge includes an initial fee plus an additional fee for each mile driven. The Español d (in dollars) is given by the function S=14.95+0.60M, where M is the number of miles driven. The company also offers an option to insure the car against damage. The insurance charge I (in dollars) is given by the I=5.80+0.15M Let C be the total charge (in dollars) for a rental that includes insurance. Write an equation relating C to M. Simplify you as much as possible.
The equation relating the total charge C to the number of miles driven M is: C = 20.75 + 0.75M
To find the equation relating the total charge C (in dollars) to the number of miles driven M, we need to add the standard charge S and the insurance charge I.
The standard charge S is given by the function S = 14.95 + 0.60M.
The insurance charge I is given by the function I = 5.80 + 0.15M.
To obtain the total charge C, we add S and I:
C = S + I
C = (14.95 + 0.60M) + (5.80 + 0.15M)
Simplifying the expression, we combine like terms:
C = 14.95 + 0.60M + 5.80 + 0.15M
C = (14.95 + 5.80) + (0.60M + 0.15M)
C = 20.75 + 0.75M
Therefore, the equation relating the total charge C to the number of miles driven M is: C = 20.75 + 0.75M
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Assume that θ is a positive acute angle.
Given Cosθ= 5/13
Find = sin 2θ
The value of sin 2θ is 120/169, for the given value of cosine θ = 5/13, which is obtained using the Pythagorean-identity.
We know that :sin²θ + cos²θ = 1.
Using this identity, we can solve for sin θ as follows:
cos θ = 5/13
sin²θ + cos²θ = 1
We are to calculate trigonometric ratio sine 2θ.
We know that sin 2θ = 2 sin θ cos θ.
To calculate sin θ, we will use the Pythagorean identity,
sin²θ + cos²θ = 1
Since trigonometric ratio cos θ = 5/13,
sin θ = √(1 - cos²θ)
= √(1 - 25/169)
= √(144/169)
= 12/13
Therefore,sin 2θ = 2 sin θ cos θ
= 2 × (12/13) × (5/13)
= 120/169
Therefore, the value of sin 2θ is 120/169.
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what times 1,000 equals 4,320
Answer:
4.32
Step-by-step explanation:
Call the unknown number = x
We have: 1000x = 4320
=> x = \(\frac{4320}{1000}\) = 4.32
=> The number we need to find is 4.32
Answer:
4.32
Step-by-step explanation:
40 + 3 = 15
HELPpppp
Step-by-step explanation:
uhm how do i help?
Answer:
umm the answer is actually 43...
Express each of the following fractions as a mixed number (the sum of a whole number and the remaining fractional units).
8 over 5=
13 over 12= pleas awnser this im 10 and this is giveing me a hard time to figer out
8/5 = 1 3/5
(5 x 1 = 5 + 3 = 8, to get 8/5)
13/12 = 1 1/12 (12 x 1 = 12 + 1 = 13, to get 13/12)
Hope this helped! :D
pls hlp thx your the best
Answer:
y=3x-12
Step-by-step explanation:
We can simply apply the formula;
\(y = y1 = m(x - x1)\)
When x1 and y1 are points on the line and m is the gradiant
Hence,
\(y - ( - 3) = 3(x - 3)\)
\(y + 3 = 3x - 9\)
Hence when arranging to yields:
\(y = 3x - 12\)
Hopefully this helps!! :)
Please mark as brainliest! :)
Jaymes Corporation produces high-performance rotors. It expects to produce 30,000 rotors in the coming year. It has invested $6,000,000 to produce rotors. The company has a required return on investment of 11%. What is its ROI per unit?
The ROI per unit for Jaymes Corporation's rotors is $200.
To calculate the ROI per unit, we need to divide the total return on investment by the number of units produced. In this case, the company has invested $6,000,000 to produce 30,000 rotors.
ROI per unit = Total ROI / Number of units produced
Total ROI = $6,000,000
Number of units produced = 30,000
ROI per unit = $6,000,000 / 30,000 = $200
Therefore, the ROI per unit for Jaymes Corporation's rotors is $200. This means that for every rotor produced, the company expects to generate a return of $200.
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statistics on real gdp during world war ii may give a misleading indication of whether world war ii was a period of prosperity because
Relying solely on statistics on real GDP during World War II may give a misleading indication of prosperity. It is crucial to consider a broader range of indicators and factors, such as living standards, employment conditions, social well-being, and the overall human experience, to assess the true impact of the war on the economy and society.
Statistics on real GDP during World War II may give a misleading indication of whether it was a period of prosperity because GDP measures the total value of goods and services produced within a country's borders, but it does not capture the full picture of economic well-being and quality of life.
During World War II, the increased production of military goods and services significantly boosted GDP. The war effort led to a surge in government spending, mobilization of resources, and expansion of industries related to defense production. This contributed to a substantial increase in GDP figures, creating the appearance of economic growth and prosperity.
However, it is essential to consider the context and the underlying factors that influenced these GDP numbers. World War II was a time of conflict and immense human suffering. The war resulted in widespread destruction, loss of life, displacement, and significant social and economic disruptions. Resources were redirected towards war production, which often came at the expense of civilian consumption and investment.
Furthermore, GDP does not account for the distribution of wealth and income. While some sectors of the economy thrived during the war, others faced hardships and scarcity. Rationing and resource allocation measures were implemented, which limited the availability of consumer goods for the general population. Additionally, the impact of inflation and wartime price controls can distort the true economic conditions experienced by individuals and households.
Moreover, the human cost of war cannot be captured by GDP alone. The loss of lives, physical and emotional trauma, and long-term social and economic consequences cannot be adequately reflected in GDP figures.
Therefore, relying solely on statistics on real GDP during World War II may give a misleading indication of prosperity. It is crucial to consider a broader range of indicators and factors, such as living standards, employment conditions, social well-being, and the overall human experience, to assess the true impact of the war on the economy and society.
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Model the pair of situations with exponential functions f and g. Find the approximate value of x that makes f(x)= g(x).
f:initial value of 300 decreasing at a rate of 13%
g: initial value of 100 increasing at a rate of 13%
Write the exponential function for f.
f(x)=__
The solution to the exponential functions are
a) The function f ( x ) = 300 ( 0.87 )ˣ
b) The function g ( x ) = 100 ( 1.13 )ˣ
c) The value of x = 6
What is exponential growth factor?The exponential growth or decay formula is given by
x ( t ) = x₀ × ( 1 + r )ⁿ
x ( t ) is the value at time t
x₀ is the initial value at time t = 0.
r is the growth rate when r>0 or decay rate when r<0, in percent
t is the time in discrete intervals and selected time units
Given data ,
Let the function be represented as f ( x ) and g ( x )
So , the function f ( x ) is decreasing at a rate of 13 %
Substituting the values in the equation , we get
f ( x ) = 300 ( 1 - 0.13 )ˣ
On simplifying the equation , we get
f ( x ) = 300 ( 0.87 )ˣ
And , the function g ( x ) is increasing at a rate of 13 %
Substituting the values in the equation , we get
g ( x ) = 100 ( 1 + 0.13 )ˣ
On simplifying the equation , we get
g ( x ) = 100 ( 1.13 )ˣ
And , the approximate value when f ( x ) = g ( x ) is
300 ( 0.87 )ˣ = 100 ( 1.13 )ˣ
On further simplification , we get
3 ( 0.87 )ˣ = ( 1.13 )ˣ
Taking logarithm on both sides of the equation , we get
ln ( 5 ) + x ln ( 0.87 ) = x ln ( 1.13 )
And , x [ ln ( 1.13 ) - ln ( 0.87 ) ] = ln ( 5 )
On further simplification , we get
x = ln ( 5 ) / [ ln ( 1.13 ) - ln ( 0.87 ) ]
x = 6.15
x = 6
Hence , the exponential equations are solved
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