Write the equation of the line that passes through the given points.
(0,4) and (5,10)
Answer: y = 6/5x + 4
Step-by-step explanation: The equation is in form y = mx + b, where m is the slope and b is the y-intercept. You already have the y-intercept, which is 4. To find the slope, use rise over run. y2 - y1 / x2 - x1 = 10-4/5-0 = 6/5.
when a person's test performance can be compared with that of a representative and pretested sample of people, the test is said to be
when a person's test performance can be compared with that of a representative and pretested sample of people, the test is said to be norm-referenced.
Norm-referenced tests are assessments that measure an individual's performance against a predetermined group, or norm. A norm-referenced test is designed to evaluate how a person performs in comparison to a representative and pretested sample of people. This type of testing is especially common with achievement tests, such as the SAT or IQ tests, where the scores are meant to represent how the individual compares to others of the same age or in the same educational setting. The results of norm-referenced tests can be used to rank individuals according to their performance on the test, allowing for an easy comparison between individuals. Norm-referenced tests are designed to provide a comprehensive view of an individual’s strengths and weaknesses in comparison to a predetermined group.
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2/3x-1/5x=x-1 what is x
The value of x that satisfies the equation is x = 15/8, which is equivalent to 1.875.
To solve the equation (2/3)x - (1/5)x = x - 1 and find the value of x, we can follow these steps:
Combine like terms on the left side of the equation:
(2/3 - 1/5)x = x - 1
Find a common denominator for the fractions on the left side. The common denominator for 3 and 5 is 15, so we rewrite the equation as:
(10/15 - 3/15)x = x - 1
Simplify the left side of the equation:
(7/15)x = x - 1
To eliminate the fraction, we can multiply both sides of the equation by the denominator of the fraction, which is 15:
15 * (7/15)x = 15 * (x - 1)
This simplifies to:
7x = 15x - 15
Subtract 15x from both sides of the equation to isolate the x term:
7x - 15x = -15
Simplifying further:
-8x = -15
Divide both sides of the equation by -8 to solve for x:
x = (-15) / (-8)
Simplifying the division:
x = 15/8
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Let a function f be analytic everywhere in a domain D. Prove that if f(z) is real-valued for all z in D, then f(z) must be constant throughout D.
Let a function f be analytic everywhere in a domain D. Prove that if f(z) is real-valued for all z in D, then f(z) must be constant throughout D. Suppose a function f(z) is analytic and real-valued throughout a domain D. Assume that there are two different points in D, say w and z, so that f(z) ≠ f(w). Therefore, we have a closed path consisting of the line segment from z to w and the line segment from w to z. Now let γ be any closed path in D that encloses the path from z to w. Since f(z) ≠ f(w), f(z) - f(w) ≠ 0, so f(z) - f(w) / z - w ≠ 0. This makes the function 1 / (f(z) - f(w)) analytic throughout D. Thus, by Cauchy's theorem, $\oint_{\gamma } \frac{1}{f(z)-f(w)}dz = 0$.where gamma is a function.
frac stands for fraction. This leads to $\int_{w}^{z} \{1}/{f(z)-f(w)}dz + \int_{z}^{w} \{1}/{f(z)-f(w)}dz = 0$. But by substituting f(w) = f(z) and reversing the direction of integration in the second integral, we get, $\int_{w}^{z} \frac{1}{f(z)-f(w)}dz - \int_{w}^{z} \frac{1}{f(w)-f(z)}dz = 0$ . This results in the integral$\int_{w}^{z} \frac{f'(w)}{f(z)-f(w)}dz - \int_{w}^{z} \frac{f'(z)}{f(w)-f(z)}dz = 0$. Now it is time to simplify and evaluate each of the integrals. The first integral has value $\ln|f(z)-f(w)|$ and the second integral has value $\ln|f(z)-f(w)|$. Therefore, $f'(z)/f(z)-f(w) = f'(w)/(f(w)-f(z))$. This equation, however, is not possible unless $f(z) = f(w)$. Hence, we conclude that the function f(z) is constant throughout D.
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\(\sf 15=2m-9\)
\(▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)
Value of m is equal to :
\(12\)\( \large \boxed{ \mathfrak{Explanation}}\)
➢ 15 = 2m - 9
➢ 15 + 9 = 2m
➢ 2m = 24
➢ m = 24 ÷ 2
➢ m = 12
\( \mathfrak{hope \: \: it \: \: helps\;\; Rainbow ~ \: \: }\)
5662 rounded to the nearest 100
Answer:
5700
Step-by-step explanation:
Answer:
5700
Step-by-step explanation:
The temperature in San Diego, California is 5 degrees warmer than twice the temperature in Boise, Idaho. The temperature in San Diego is 61 degrees. Write an equation to determine the temperature in Boise.
Hope this helps
Answer:
2x + 5 = 61
Step-by-step explanation:
Let x be equal to the temperature in Boise.
Since the temperature in San Diego is 5 degrees warmer than twice the temperature in Boise, we must double the temperature in Boise and then add 5 degrees. To do this we put a 2 in front of the x and then add 5 to that.
2x + 5
Since we know the temperature in San Diego is 61 we can make the equation equal to 61.
2x + 5 = 61
Answer:61-5=56÷2=28
Step-by-step explanation:First, you want to find the San Diego temp minus 5. Once you find that it is 56, you divide that by two because it says that the temp in Boise would be half of it. Then you find the answer of 28. Hope this helps.
Need answers quickly need it step by step
(−5)2 −2×(−9)+6=
(−9)−(−8)+2×42=
8÷(−4)×(−6)2 +7=
10×5−(−6)2 +(−8)=
(10 ÷ (−5) − (−2)) × (−3)3=
3×10+8−42=
(−3)3 −2+8÷(−8)=
4×(−8)+6−(−2)3=
(−5)2 ×3÷5+9=
4 × (−6) ÷ 8 + 33=
Thanks
Answer:
Step-by-step explanation:
1. -10+18+6=8+6=14
2. -1+84=83
3. -2×(−6)2 +7=12×2+7=24+7=31
4. 50-(−6)2 +(−8)=50+12-8=62-8=54
5. (-2+2)× (−3)3=0× (−3)3=0
6. 30+8-42=38-42=-4
7. -9-2-1=-12
8. -32+6+6=-20
9. -10×3÷5+9=-30÷5+9=-6+9=3
10. -24÷ 8 + 33=-3+33=30
If a ∝ b and a = 18 when b = 3, then find a when b = 5.
show how you got ur answer so I can see if it makes sense!
"a ∝ b" means "a is proportional to b", which in turn means there is some constant k such that
a = kb
We're given that a = 18 and b = 3, so that
18 = 3k ⇒ k = 6
Then when b = 5, we would have
a = 6 × 5 = 30
PLEASE HELP ME IM DESPERATE! Given the number of sides of a polygon, what is the maximum number of right angles it can have? Specifically, what is the maximum number of right angles in a 100-sided shape?
Answer: 5
Step-by-step explanation: Sum of Angles = 900'. 6 right angles
= 540', leaving 360', which is impossible.
a growing farming conglomerate increases its water usage at a rate of 7% every year. if it used 28,390 megaliters of water this year, then how much water will it use 5 years from now?
The farming conglomerate will use approximately 36,912.51 megaliters of water 5 years from now.
To calculate the amount of water the farming conglomerate will use 5 years from now, we can use the given information that its water usage increases at a rate of 7% every year.
Let's denote the current water usage as W₀ and the water usage after 5 years as W₅.
We know that W₅ = W₀ * (1 + r)^n, where r is the growth rate (in decimal form) and n is the number of years.
In this case, W₀ = 28,390 megaliters, r = 7% = 0.07, and n = 5.
Substituting these values into the formula, we have:
W₅ = 28,390 * (1 + 0.07)^5
Calculating this expression, we get:
W₅ ≈ 28,390 * (1.07)^5 ≈ 36,912.51 megaliters
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PLS HELP at a summer camp there are 876 girls and 25 boy how many more girls are there then boys
Answer:851
Step-by-step explanation:
Use the FOIL method to check your answer from part A.
Write equations of circles in standard form from graphs
The equation of the circle in standard form is (x - 3)²+ y² = 1.
What is equation of circle in standard form?The standard form of the equation of a circle is:
(x - h)² + (y - k)² = r²
where (h, k) is the center of the circle and r is its radius.
This equation represents all points in the xy-plane that are equidistant from the center (h, k) of the circle. The squared terms (x - h)² and (y - k)² represent the distances between the center and any point (x, y) on the circle, and r² is the squared length of the radius of the circle.
In the given question,
The center of the circle is (3, 0), and the radius extends to the point (4, 0), which means the radius has a length of 1 unit.
Substituting the values of the center and radius into the standard form equation of a circle, we get:
(x - 3)² + (y - 0)² = 1²
Simplifying, we get:
(x - 3)² + y² = 1
Therefore, the equation of the circle in standard form is:
(x - 3)² + y² = 1.
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A salesperson earns a base salary of $400 per week plus 20%
commission on sales. He is offered double his base salary if he'll
accept half his original commission. Graph and label the original deal
and the new deal below. Next to the graph, find when the original deal
is a better choice. Explain your thinking.
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Step-by-step explanation:
For how to graph this, best to look at the guidelines for graphing a break-even formula.
What we do want to know is where these two values equal each other.
So, set: 400 + 0.20X = 800 + 0.10X
Subtract 400 from both sides; also subtract 0.10X from both sides, to get:
0.10X = 400
To solve for "X", divide out both sides by: 0.10, to get:
X = 4,000
What can can glean from this, is that:
(1) The sales person is better off accepting the higher base salary, up to the point of sales being no more than $4,000;
(2) The sales person is better off accepting the lower base salary, if their sales are normally expected to exceed $4,000.
just before a presidential election, a national opinion poll increases the size of its weekly random sample from the usual 1000 1000 people to 4000 people. 4000 people. does the larger random sample reduce the bias and the variability of the poll result?
Although a bigger random sample can aid in increasing the precision and decreasing the variability of a national opinion poll, it cannot ensure a decrease in bias, which is dependent on the efficacy of the sampling technique and the sample's representativeness.
A nationwide opinion poll's results are often less variable as the random sample size is increased since the bigger sample size more accurately represents the people being sampled.
It does not necessarily lessen bias, which is the term for systemic mistakes in the sampling process or polling methodology that may endure even with a larger sample size.
The accuracy of the poll's results can be improved by reducing random mistakes like sampling and measurement errors with a bigger sample size.
The standard error of the mean, a measurement of the variability of the sample mean from sample to sample, is often less the bigger the sample size.
A national opinion poll's measure of interest, the population mean, can be more accurately estimated with a smaller standard error.
If the sample is not completely random or representative of the population being investigated, bias may still exist in a bigger sample.
For instance, the findings may be biassed if the pollsters oversample a certain demographic group or geographic area.
Non-response bias can also happen if a certain group of people is less likely than others to reply to the survey.
As a result, while a bigger random sample can aid in increasing the precision and decreasing the variability of a national opinion poll, it cannot ensure a decrease in bias, which is dependent on the efficacy of the sampling technique and the sample's representativeness.
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-7.8× (- 1.5)
plz help ASAP
Answer:
11.7
Step-by-step explanation:
(−7.8)(−1.5)
Hope ths helps
how to solve a^2 = -1 mod m?
In general, solving equations involving quadratic residues can be complex and requires knowledge of advanced number theory.
To solve the equation a^2 = -1 mod m, where m is an odd positive integer, we can use the concept of quadratic residues.
First, we need to find a number b such that b^2 = -1 mod m. If such a number exists, then a = b^((m+1)/4) mod m is a solution to the equation a^2 = -1 mod m.
However, if no such b exists, then the equation has no solution. This is because for odd prime m, the congruence a^2 = -1 mod m has a solution if and only if m is congruent to 1 mod 4.
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5 The tires on a truck have been changed such that the ratio of the circunference or the new line to that of theactory installed tire is 1.2. The speed limit is 55 mph. What number on your speedometer must you stay at orbelow if you do not wish to break the speed limit
For every circumference that the new tire does, the factory-installed tire will make 2.
The speedometer calculates the velocity using the number of revolutions.
So, with the new tire, the speedometer is going to say the half of the actual velocity. Therefore, you must stay at 27.5 (55/2=27.5) mph or below if you don't want to break the speed limit.
Answer: 55/2 mph = 27.5 mph
I need helpppppppp:(
The amount to be paid is more on credit card 2 is more, it must be paid first.
Explain the term credit limit?A credit limit is the most money you are permitted to spend on such a credit card or line of credit by a lender. Understanding your limit, however, does not imply that going for it is a wise decision. Credit limits are determined by credit card companies. Companies want the limits to be both high enough to encourage card use and low enough to prevent overspending.Card 1:
Current balance = $8,312.69
Annual percentage rate APR = 24.16%
Credit limit = $10,000.
Used amount = $10,000 - $8,312.69
Used amount = 1687.31
A = P\((1 + r/n)^{nt}\)
P = $1687.31
r = 24.16% = 0.2416
Take n = 1 and time = 1 year.
A = 1687.31*\((1 + 0.2416/n)^{1*1}\)
A = 1687.31 * 1.2416
A = $2094.96
For Card 2:
Current balance = $1,180.34
APR = 21.15%
Credit limit = $75,00
Used amount = $75,00 - $1,180.34
Used amount = $6319.66
A = 6319.66*\((1 + 0.2115/n)^{1*1}\)
A = 6319.66 * 1.2115
A = $7656.26
As the amount to be paid is more on credit card 2 is more, it must be paid first.
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PLEASE HURRY I WILL GIVE THE BRAINLYEST TO THE PERSON WHO GETS THIS CORRECTLY
What are the integer solutions to the inequality below?
Answer:
3 ≤11 ≤ 11
Step-by-step explanation:
3x-4 = 2x +1
3x-5 = 2x
x-5 = 0
x= 5
3 ≤11 ≤ 11
How to change the units of the following speed? 9000 cm/s into m/s
Answer:
Formula: divide the value in centimeters per second by 100 because 1 meter per second equals 100 centimeters per second. So, 9000 centimeters per second = 9000100 = 90 meters per second.
Step-by-step explanation:
In a class of 26 students, 8 have a brother and 6 have a sister. There are 2 students
who have a brother and a sister. What is the probability that a student chosen
randomly from the class has a brother?
Answer:
12
Step-by-step explanation:
because if we add 8+6 is 14-26=12
are false positives too common in some medical tests? researchers conducted an experiment involving 250 patients with a medical condition and 750 other patients who did not have the medical condition. the medical technicians who were reading the test results were unaware that they were subjects in an experiment.
The false positive and false negative rates for the medical test are given as:
A false positive is an outcome in which the model forecasts the positive class inaccurately. A real positive result is one in which the model accurately predicts the positive class.
To determine the false positives and false negatives of the tests, we use the principle of probability.
Probability (p) = Number of Favorable outcomes/Total number of Exhaustive outcomes
Recall that 240 of the 250 patients were accurately recognized. Also, 50 healthy people were diagnosed to have the ailment. Hence, the test's false positive (FP) and false negative (FN) rates can be estimated as follows:
Hence P (False Positive) = 50 / 750 = o.0667 or 6.67%
P (False Negative) = 10/750 = 0.0400 or 4.00%.
Therefore, the required rates are 6.67% and 4.00% accordingly.
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Full Question:
Testing the test Are false positives too common in some medical tests? Researchers conducted an experiment involving 250 patients with a medical condition and 750 other patients who did not have the medical condition. The medical technicians who were reading the test results were unaware that they were subjects in an experiment.
Question: Technicians correctly identified 240 of the 250 patients with the condition. They also identified 50 of the healthy patients as having the condition. What were the false positive and false negative rates for the test? (See table below)
Medical patients Other Conditions Total
Correctly identified 240 700 940
Incorrectly identified 10 50 60
Total 250 750 1000
please i need help in f.
III Homework: HomeWork 5-Chapter 5 The functions f and g are integrable and (Simplify your answer.) 7 e. lg(x)-f(x)dx= 0 Sigix)- (Simplify your answer.) 7 t. [1390x)-f(x)dx= 2 (Simplify your answer.)
let's consider the following problem:
Find the integral of the function \(\(f(x) = x^2 + 3x - 2\).\)
To solve this, we can use the power rule for integration. Applying the power rule, we get:
\(\[\int (x^2 + 3x - 2) \, dx = \frac{1}{3}x^3 + \frac{3}{2}x^2 - 2x + C\]\)
where \(\(C\)\) is the constant of integration.
So, the integral of \(\(f(x)\) is \(\frac{1}{3}x^3 + \frac{3}{2}x^2 - 2x + C\).\)
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The price of a video game is $55.00. The Gamer Stop is offering a 50% discount on the
video game. What is the sale price of the game?
PLEASE HELP!!!! It would be greatly appreciated
Answer:
$27.50
Step-by-step explanation:
55*50%
=55*1/2
=55/2
=27.5
Answer:
27.5
Step-by-step explanation:
50 divided into 2 is 20.50
5 divided by 2 is 2.50
Find the 29th term 29,33,37,41
(arithmetic)
Answer:
a₂₉ = 141
Step-by-step explanation:
The nth term of an arithmetic sequence is
\(a_{n}\) = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 29 and d = a₂ - a₁ = 33 - 29 = 4 , then
a₂₉ = 29 + (28 × 4) = 29 + 112 = 141
Answer:
The 29th term of arithmetic sequence is 141.
Step-by-step explanation:
Here's the required formula to find the arithmetic sequence :
\(\longrightarrow{\pmb{\sf{a_n = a_1 + (n - 1)d}}}\)
\(\pink\star\) aₙ = nᵗʰ term in the sequence\(\pink\star\) a₁ = first term in sequence \(\pink\star\) n = number of terms \(\pink\star\) d = common differenceSubstituting all the given values in the formula to find the 29th term of arithmetic sequence :
\(\purple\star\) aₙ = a₂₉\(\purple\star\) a₁ = 29\(\purple\star\) n = 29 \(\purple\star\) d = 4\(\leadsto{\sf{ \: \: a_n = a_1 + (n - 1)d}}\)
\(\leadsto{\sf{ \: \: a_{29} = 29 + (29 - 1)4}}\)
\(\leadsto{\sf{ \: \: a_{29} = 29 + (28)4}}\)
\(\leadsto{\sf{ \: \: a_{29} = 29 + 28 \times 4}}\)
\(\leadsto{\sf{ \: \: a_{29} = 29 + 112}}\)
\(\leadsto{\sf{ \: \: a_{29} = 141}}\)
\(\star \: \: \red{\underline{\boxed{\sf{a_{29} = 141}}}}\)
Hence, the 29th term of arithmetic sequence is 141.
\(\rule{300}{2.5}\)
consider the following system. dx dt = x y − z dy dt = 5y dz dt = y − z find the eigenvalues of the coefficient matrix a(t). (enter your answers as a comma-separated list.)
The eigenvalues of the coefficient matrix a(t) are 5,1,-1.
To find the eigenvalues of the coefficient matrix, we need to first form the coefficient matrix A by taking the partial derivatives of the given system of differential equations with respect to x, y, and z. This gives us:
A = [y, x, -1; 0, 5, 0; 0, 1, -1]
Next, we need to find the characteristic equation of A, which is given by:
det(A - λI) = 0
where I is the identity matrix and λ is the eigenvalue we are trying to find.
We can expand this determinant to get:
(λ - 5)(λ - 1)(λ + 1) = 0
Therefore, the eigenvalues of the coefficient matrix are λ = 5, λ = 1, and λ = -1.
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Put the steps in order. *
5 points
1st 2nd 3rd 4th 5th
Get Constant on other side of equal sign (+ or -)
Combine Like Terms on EACH side of equations.
Get rid of Coefficient (divide or multiply)
Get Variable on one side of equal sign (+ or - )
Get rid of any grouping symbols -({[]}) - use Distributive Property
Answer:
5,4,1,3,2
Step-by-step explanation:
There's no problem doing these out of order.
can someone help me?
Answer:
Step-by-step explanation:
X = 152 -90 = 62 degree