Answer:
the fourth answer, hope this can help
Answer:
evidence based on experience and observation
Step-by-step explanation: 100%
Solve for x*
X+ 19
14 + x
Answer:
x=-9
Step-by-step explanation:
2(14+x)=x+19
28+2x=x+19
x=-9
equations with variables on both sides: decimals and fractions, algebra 2 0.5s + 1 = 7 + 4.5s
Final Answer: \(s = -\frac{3}{2}\)
Steps/Reasons/Explanation:
Question: Equations with variables on both sides: decimals and fractions, algebra 2. \(0.5s + 1 = 7 + 4.5s\).
Step 1: Subtract \(0.5\) from both sides.
\(1 = 7 + 4.5s - 0.5s\)
Step 2: Simplify \(7 + 4.5s - 0.5s\) to \(7 + 4s\).
\(1 = 7 + 4s\)
Step 3: Subtract \(7\) from both sides.
\(1 - 7 = 4s\)
Step 4: Simplify \(1 - 7\) to \(-6\).
\(-6 = 4s\)
Step 5: Divide both sides by \(4\).
\(-\frac{6}{4} = s\)
Step 6: Simplify \(\frac{6}{4}\) to \(\frac{3}{2}\).
\(-\frac{3}{2} = s\)
Step 7: Switch sides.
\(s = -\frac{3}{2}\)
~I hope I helped you :)~
If f(x) = 6x – 4, what is f(x) when x = 8?Which represents where f(x) = g(x)?
select all the number sets of numbers that are possible values for x in the inequality x>-6
Answer:
that would be everything greater than -6 so -5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20...1000000...+∞
Step-by-step explanation:
On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities.10.38 9.08 11.7 6.4 12.32 14.43 15.4610.02 14.4 16.08 17.5 19.08 17.88 12.7516.7 17.25 15.54 14.7 18.81 17.89 14.818.32 15.95 26.75 22.22 22.66 20.88 23.3518.95 23.6 19.16 23.65 27.7 26.95 27.0426.89 24.58 37.76 26.41 38.91 29.36 41.55(a)Formulate hypotheses that can be used to determine whether the population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from the $21.62 rate charged by Tulsa. (Enter != for ≠ as needed.)H0:Ha:(b)What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.)What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.)(c)At α = 0.05, can your null hypothesis be rejected? What is your conclusion?Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.(d)Repeat the preceding hypothesis test using the critical value approach.State the null and alternative hypotheses. (Enter != for ≠ as needed.)H0:Ha:Find the value of the test statistic. (Round your answer to three decimal places.)State the critical values for the rejection rule. Useα = 0.05.(Round your answers to three decimal places. If the test is one-tailed, enter NONE for the unused tail.)test statistic≤test statistic≥State your conclusion.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
The null hypothesis for the data will be 21.62 and the alternate hypothesis is 2.02 for the p-value for the data is 0.2253 .
The charge at which anything happens is referred to as the velocity at which it happens.
The required details for mean rate :
(a) H0: µ = 21.62
Ha: µ ≠ 21.62
(b) t = -1.231
p-value = 0.2253
(c) Stop rejecting H0 right now. No longer significantly different from the domestic water tariff in Tulsa, the suggested household water charge per five CCF for the entire USA.
(d) H0: µ = 21.62
Ha: µ ≠ 21.62
t = -1.231
check statistic ≥ 2.020
Don't dismiss H0 any longer. The suggested five CCF residential water charge for the entirety of the USA is no longer significantly different from the five CCF residential water tariff in Tulsa.
The P-value is higher at 0.05, the level of significance. The impact in this instance is negligible. The attempt to reject the null hypothesis failed.
The conclusion is that there is insufficient statistical support to determine whether other American cities have a different mortality rate than Tulsa.
The crucial values for t at this level of significance are t=2.019.
Given that the statistic t = -1.15 is inside the acceptance range in this case, the null hypothesis is not disproved.
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you are contracted to build a children's pool at the new public pool facility. the pool must be built on a fenced off 17 by 26 feet rectangular plot. the pool must be a 77 sq ft rectangle. furthermore, the facility manager wants the border fence to be the same distance, x, from all sides of the pool, except they want to put a lifeguard chair at one end of the length, so the fence should be twice as far away on that side. what are the dimensions of the pool?
The pool dimensions are approximately 12.22 by 21.22 feet.
To start, we know that the pool must be a 77 sq ft rectangle, so we can use the formula for the area of a rectangle (length x width = area) to solve for the dimensions.
77 = length x width
Next, we know that the fenced off plot is a 17 by 26 feet rectangle. We can use this information to set up an equation for the distance between the pool and the fence:
17 - 2x = length
26 - 2x = width
We also know that the fence should be twice as far away on the end where the lifeguard chair will be located, so we can set up another equation:
17 - 4x = length (on the side with the lifeguard chair)
Now we can substitute the expressions for length and width into the formula for the area of a rectangle:
77 = (17 - 2x)(26 - 2x)
Expanding the expression on the right side, we get:
77 = 442 - 86x + 4x^2
Rearranging and simplifying, we get a quadratic equation:
4x^2 - 86x + 365 = 0
Using the quadratic formula, we can solve for x:
x = (86 +/- sqrt(86^2 - 4(4)(365))) / (2(4))
x = (86 +/- sqrt(55284)) / 8
x = (86 +/- 234.85) / 8
x = 36.86 or 2.39
We can ignore the negative value, so x = 2.39 feet.
Now we can use the equations for length and width to solve for the dimensions of the pool:
length = 17 - 2x = 17 - 2(2.39) = 12.22 feet
width = 26 - 2x (except on the side with the lifeguard chair, where it is 4x) = 26 - 2(2.39) = 21.22 feet
So the pool dimensions are approximately 12.22 by 21.22 feet.
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Simplify square root of negative 36.
Step-by-step explanation:
The square root of a negative number is not a real number. It is an imaginary number represented by "i". Therefore, square root of negative 36 can be simplified as 6i.
PLS mark my answer brainliest
Justin's truck was totaled and he needs a new one, but cannot afford it with the money he has in the bank. so he gets a 13.5% per year. How much interest will be charged in the first 10 months? How much will he owe after 10 months assuming he did not make any payments?
The compound interest formula is:
\(A=P(1+\frac{r}{n})^{nt}\)Where
P is principal
r is rate of interest
n is number of compounding
t is number of years
Putting the given information, we have:
\(\begin{gathered} A=P(1+\frac{r}{n})^{nt} \\ A=13,500(1+\frac{0.135}{12})^{12} \\ A=13500(1.01125)^{12} \\ A=15439.60 \end{gathered}\)Interest amount is:
15,439.60 - 13,500 = $1939.60 (in a year/12 months)
In 10 months:
\(1939.60\times\frac{10}{12}=1616.33\)Justin would owe $1616.33 after 10 months.
im sooo confused ???????????
Answer:
D
Step-by-step explanation:
A popular restaurant advertises that it delivers its orders within 30 minutes. Suppose the average delivery time for one restaurant is 27 minutes with a standard deviation of three minutes. What is the delivery time with a z-score of 1.2?
23.4 minutes
27.4 minutes
28.2 minutes
30.6 minutes
Answer:
30.6 minutes
Step-by-step explanation:
Using the normal distribution, it is found that the delivery time with a z-score of 1.2 is of 30.6 minutes.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean \(\mu\) and standard deviation \(\sigma\) is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.In this problem, the mean and the standard deviation are given, respectively, by:
\(\mu = 27, \sigma = 3\).
The delivery time with a z-score of 1.2 is X when Z = 1.2, hence:
\(Z = \frac{X - \mu}{\sigma}\)
\(1.2 = \frac{X - 27}{3}\)
X - 27 = 3 x 1.2
X = 30.6.
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What type of number is 101,323?Choose all answers that apply:AWhole numberBIntegerRationalIrrational
Given the number 101,323?
The correct options are:
Whole number because there is no decimal point.
Integer because there is no decimal point.
Rational because can be written as a/b
So, the answer is options A, B, and C.
select any five points on a square whose side-length is one unit. show that at least two of these points are within √2 2 units of each other.
The distance between them is at most the diagonal of the smaller square, which is √2/2 units. The two points selected are within √2/2 units of each other, as required.
To show that at least two of the five points on a unit square are within √2/2 units of each other, we can use the pigeonhole principle.
Divide the square into four smaller squares, each with a side length of 1/2 unit. By the pigeonhole principle, at least two of the five points must lie in the same smaller square.
Consider the two points that lie in the same smaller square.
The distance between them is at most the diagonal of the smaller square, which is √2/2 units.
Therefore, these two points are within √2/2 units of each other, as required.
This argument holds for any five points in a unit square, since we can always divide the square into four smaller squares of side length 1/2 unit.
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Which descriptions from the list below accurately describe the relationship between QRS and TUV? check all the apply.
Answer:
The triangles are similar.
Step-by-step explanation:
They are similar because they have the same angles. They may be the same size, but it would be best to refer to whatever definition you were given.
The correct descriptions from the list accurately describe the relationship between QRS and TUV is,
⇒ Similar
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
We have to given that;
Two triangles are shown in figure.
Here, All the corresponding angles are same in both triangles.
And, The ratio of their corresponding sides are,
In triangle TUV;
⇒ 90 / 108 = 30 / 36
In triangle QRS;
⇒ 30 / 36
Hence, The correct descriptions from the list accurately describe the relationship between QRS and TUV is,
⇒ Similar
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3(q − 16) + –8 = –14
Answer:
q = 14
Step-by-step explanation:
3 (q - 16) + -8 = -14
3q - 48 + -8 = -14
3q - 56 = -14
+56 +56
3q = 42
/3. /3
q = 14
hope this helps :)
The function h(t)=−16t(t−7) models the height of an object at any time t after it is launched, where t is measured in seconds. After how many seconds will the object hit the ground?
Answer:
2.65secs
Step-by-step explanation:
Give:
The function h(t)=−16t(t−7) models
the object will hit the ground at h= 0
h(t)=−16t(t−7)
0= -16t(t−7)
0= -16t^2 + 112
16t^2 = 112
t^2 = 7
t= √7
t=2.65secs
Hence, the object object hit the ground at 2.65secs
in hypothesis testing, the tentative assumption about the population parameter is group of answer choices
The goal of a hypothesis test is to determine if the data can refuse an assumption a parameter or a population.
Statistical hypothesis test: A statistical hypothesis test is a technique for determining whether the available data are sufficient to support a specific hypothesis. We can make probabilistic claims about population parameters through hypothesis testing.
The purpose of a hypothesis test is to ascertain whether the data can refute a parameter or population assumption.
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How do you find cot Thea = 0 on unit circle
I don’t understand how to find cot(Thea)=0 on the unit circle and also cot(Thea)=-1
Answer:
See below for explanation.
Step-by-step explanation:
Each (x, y) point on the unit circle is equal to (cos θ, sin θ).
To find cot θ, where θ is the angle corresponding to the point (x, y) on the unit circle, we can use the formula:
\(\boxed{\cot \theta=\dfrac{\cos \theta}{\sin \theta}=\dfrac{x}{y}}\)
\(\hrulefill\)
If cot θ = 0, then x must be zero. (If y was zero, the value would be undefined). Therefore, we need to find the points on the unit circle where the x-coordinate (cos θ) is zero.
The points on the unit circle where x = 0 are:
(0, 1) and (0, -1)The corresponding angles (in radians) at these points are:
\(\bullet \quad \dfrac{\pi}{2}\;\;\textsf{and}\;\;\dfrac{3\pi}{2}\)
Therefore, the cotangent has the value of zero at π/2 and 3π/2.
\(\hrulefill\)
If we divide a number by the same (but negative) number, we get -1.
Similarly, if we divide a negative number by the same (but positive) number, we get -1.
Therefore, if cot θ = -1, then the x-coordinate and y-coordinate of the points must be the same, but opposite signs.
The points on the unit circle where -x = y and x = -y are:
\(\bullet \quad \left(-\dfrac{\sqrt{2}}{2},\dfrac{\sqrt{2}}{2}\right)\;\; \textsf{and}\;\;\left(\dfrac{\sqrt{2}}{2},-\dfrac{\sqrt{2}}{2}\right)\)
The corresponding angles (in radians) at these points are:
\(\bullet \quad \dfrac{3\pi}{4}\;\;\textsf{and}\;\;\dfrac{7\pi}{4}\)
Therefore, the cotangent has the value of -1 at 3π/4 and 7π/4.
HELLPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
more the letter x is often used in algebra to mean a value that is not yet known is is calld a variable or sometimes an unknown. in x+2=7,x is a variable but we can work out its value if we try
PLEASEEE HELPP!!!!! Meeee
Answer:
10214.51
Step-by-step explanation:
espacio muestral de lanzar al azar dos lapices con 4 caras de cada uno
Answer:
8
Step-by-step explanation:
porque no lo entiendo lo siento lol
You have job were you are paid (p) $1,000 a month plus $15.00 for every hour (h) you work. You work 150 hrs (h), how much money did you make?
Answer:
15 x 150 = 2250
2250 + 1000 = 3250
you make $3250,00
In the context of a two-sample z-test for two population proportions, which of the following statements about the pooled sample proportion, p, true?
A. It estimates the common value of p1 and p2 under the assumption that the null hypothesis is true
B. It is a parameter
C. It is obtained by averaging the two sample proportions 1and 2.
D. It is equal to the proportion of successes in both samples combined. Select one: a. A and D b. B and D c. A and C d. B and C question 20 (my reference)
The correct statement is that the pooled sample proportion, p, is equal to the proportion of successes in both samples combined and it estimates the common value of p1 and p2 under the assumption that the null hypothesis is true. Option d
In a two-sample z-test, we compare two proportions from two different populations. The pooled sample proportion, p, is calculated by combining the number of successes from both samples and dividing it by the total number of observations. It represents the overall proportion of successes in the combined samples. This pooled sample proportion is used to estimate the common value of p1 and p2 under the assumption that the null hypothesis is true, and it serves as a parameter in the z-test calculation.
Therefore, the correct statement is that the pooled sample proportion, p, is equal to the proportion of successes in both samples combined, and it also estimates the common value of p1 and p2 under the null hypothesis.
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What values of the orbital number, or angular momentum (l) and magnetic (m_l) quantum numbers...
1a)The values of l range from 0 to (n-1), so for n = 3, l can have the values 0, 1, and 2.
b) The values of m can be -2, -1, 0, +1, and +2
c) There are a total of 9 orbitals
What are quantum numbers?
The qualities and traits of quantum systems, like the electrons in atoms, are described by a set of numbers known as quantum numbers. They offer knowledge on the system's energy, angular momentum, orientation, and spin, among other characteristics.
Using the formula, number of electrons = \(n^2\)
Number of electrons =\(3^2 = 9\)
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if Sue would like to put a down payment on a new car. the car cost $27,999 and she needs to make it 20% down payment how much is her down payment ?
Answer:
$5,599.80
Step-by-step explanation
you take 20 percent of 27,999. basically multiplying .20 x 27,999.
The longest leg of a right triangle is 12 inches. The hypotenuse is 3 inches longer then twice the shortest leg. How long is the shortest leg and the hypotenuse of the triangle.
Answer:
Shortest Leg: 5 inches, Hypotenuse: 13 inches
Step-by-step explanation:
A right triangle follows the pythagorean theorem, a^2+b^2=c^2. C is the hypotenus. A combination found using this is 5, 12, and 13. To double check this, we know that the hypotenus is 2x+3, where x is the smallest leg.
is -25 irrational or rational
Answer:
Rational
Step-by-step explanation:
Rational numbers are numbers that can be written as a ratio of integers.
-25 can be written as -25 / 1. So it is rational.
Given ΔABC ≅ ΔPQR, m∠B = 3v + 4, and m∠Q = 8v – 6. Find m∠B and m∠Q.
22, 11, 10, 25
m∠B = 10 and m∠Q = 10. Since ΔABC ≅ ΔPQR, the corresponding angles are congruent. Therefore, we can set up the following equation:
m∠B = m∠Q
Given that m∠B = 3v + 4 and m∠Q = 8v - 6, we can equate these expressions:
3v + 4 = 8v - 6
To solve for v, we can start by isolating the variable terms on one side of the equation and the constant terms on the other side:
4 + 6 = 8v - 3v
10 = 5v
Dividing both sides by 5:
v = 2
Now that we have the value of v, we can substitute it back into the expressions for m∠B and m∠Q:
m∠B = 3(2) + 4 = 10
m∠Q = 8(2) - 6 = 10
Therefore, m∠B = 10 and m∠Q = 10.
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niles and bob sailed at the same time for the same length of time. niles' sailboat travel 42 miles at a speed of 6 mph, while bob's motorboat travel 98 miles at a speed of 14 mph. for how long were niles and bob traveling?
Using mathematical operations we know that Nile and Bob travelled for 7 hours.
What are mathematical operations?A mathematical function known as an operation converts zero or more input values into a precisely defined output value.
The quantity of operands affects the operation's arity.
The order of operations is a rule that outlines the proper steps to take when analyzing a mathematical equation.
We can recall the PEMDAS steps in the following order: Parentheses, Exponents, Multiplication, Division (from Left to Right), Addition, and Subtraction (from left to right).
So, we know that both Nile and Bob sailed same time and for the same length:
NIle: 42 miles at a speed of 6mph
Bob: 98 miles at the speed of 14mph
Time for which Nile and Bob were traveling are:
Nile: 42/6 = 7 hours
Bob: 98/14 = 7 hours
Therefore, using mathematical operations we know that Nile and Bob travelled for 7 hours.
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What is the quotient of 4,510 - 22 ?
Answer:
The answer is 99,220!!
Step-by-step explanation:
Did you mean to type quotient?
A _______ random variable has infinitely many values associated with measurements.
Answer:
Continuous
A continuous random variable has infinitely many values, and those values can be associated with measurements on a continuous scale in such a way that there are no gaps or interruptions.