Answer: \([1, \infty)\)
Explanation:
The range is the set of all possible y outputs of a function.
The lowest y can get is y = 1. There is no largest y value as it goes on forever upward. Therefore, we can say the set of y values can be described by the compound inequality \(1 \le y < \infty\) which condenses into the interval notation \([1, \infty)\)
We use a square bracket to include the endpoint 1. Parenthesis always goes with infinity because we can't ever reach infinity.
The rate constant for the following reaction was determined at two different temperatures: BH, + NH, → BH3 NH3 + H2 At 34 °C, the rate constant was found to be 0.000136 s1. At 50 °C, the rate constant was found to be 0.00346 s1. What is the activation energy for this reaction? Answer in kJ. Answer to 0 decimal places
The activation energy for this reaction is 87.4 kJ/mol.
The Arrhenius equation may be used to get the activation energy (Ea):
k = A * \(e^{(-Ea/RT)\)
Here k is the rate constant, A denotes the pre-exponential factor, Ea denotes the activation energy, R denotes the gas constant (8.314 J/(mol*K)), and T denotes the temperature in Kelvin.
When we take the natural logarithm of both sides, we obtain:
ln(k) = ln(A) - (Ea/RT)
We can then take the natural logarithm of both rate constants to obtain:
ln(k1) = ln(0.000136 \(s^{-1\)) = -8.89
ln(k2) = ln(0.00346\(s^{-1\)) = -5.66
We can use the two equations to obtain the activation energy:
ln(k2/k1) = ln(0.00346/0.000136) = -5.14
(Ea/R) * (1/T1 - 1/T2) = ln(k2/k1)
(Ea/8.314) * (1/(34 + 273) - 1/(50 + 273)) = -5.14
Solving for Ea, we get:
Ea = -8.314 * (-5.14) / ((1/(34 + 273)) - (1/(50 + 273)))
Ea = 87.4 kJ/mol
Therefore, the activation energy for this reaction is 87.4 kJ/mol.
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Ket
Question 1
Points A, O, and B, are collinear. Find the measure of ZCOD.
A
O x = 90°
Ox= 103°
0x=77°
Ox=23°
C
50°
O
D
B
1 pts
The measure of angle ZCOD is 27°.
Since A, O, and B are collinear, angles AOC and COB form a linear pair, which means their sum is 180°. Therefore:
x + 50° = 180°
Solving for x, we get:
x = 130°
Next, we can use the fact that angles AOC and BOA are vertical angles, which means they are congruent. Therefore:
x = 103°
Substituting x with 130°, we get:
130° = 103° + COD
Solving for COD, we get:
COD = 27°
Finally, since angles AOD and COB are alternate interior angles, they are congruent. Therefore:
77° = 50° + ZCOD
Solving for ZCOD, we get:
ZCOD = 27°
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--The complete question is, Given that points A, O, and B are collinear, find the measure of angle ZCOD, where:
Angle AOC is denoted by x and measures 90°
Angle BOA measures 103°
Angle AOD measures 77°
Angle COB measures 50°.
Please note that point O is located between points A and B.--
need help on this, thanks
Answer:
x=15, y=7
Step-by-step explanation:
Angles that form a linear pair are supplementary, so:
\(2(5x-5)+3x-5=180 \\ \\ 10x-10+3x-5=180 \\ \\ 13x-15=180 \\ \\ 13x=195 \\ \\ x=15 \\ \\ \\ \\ 5y+5+20y=180 \\ \\ 25y+5=180 \\ \\ 25y=175 \\ \\ y=7\)
Answer:
\(x=\boxed{15}\\\\y=\boxed{7}\)
Step-by-step explanation:
Angles on a Straight Line Theorem
The sum of angles on a straight line is equal to 180°.
Solving for x:
\(\boxed{\begin{aligned}2(5x-5)^{\circ}+(3x-5)^{\circ}&=180^{\circ}\\2(5x-5)+(3x-5)&=180\\10x-10+3x-5&=180\\13x-15&=180\\13x-15+15&=180+15\\13x&=195\\13x \div 13 &=195\div 13 \\x&=15\end{aligned}}\)
Solving for y:
\(\boxed{\begin{aligned}(5y+5)^{\circ}+20y^{\circ}&=180^{\circ}\\(5y+5)+20y&=180\\5y+5+20y&=180\\25y+5&=180\\25y+5-5&=180-5\\25y&=175\\25y \div 25 &=175\div 25 \\y&=7\end{aligned}}\)
Therefore:
\(x=\boxed{15}\\\\y=\boxed{7}\)
same as my last two questions
The intervals to the given function are as follows:
Domain: (-∞,∞).Range: (-∞,∞).Rel. maximums: (1.366, -0.652).Rel. minimums: (-0.366, -5.848) and (2,-1).End behavior: As x -> -∞, f(x) -> ∞, and as x -> ∞, f(x) -> ∞.Inc. intervals: (-0.366, 1.366) U (2, ∞).Dec. intervals: (-∞, -0.366) U (1.366, 2).Domain and rangeDomain: Set of values of the input of the function, hence the values of x in the graph of the function.Range: Set of values of the output of the function, hence the values of y in the graph of the function.This function is defined(values of x) for all real values and also assumes all real values(values of y), hence both the domain and the range are of the function are given by the interval (-∞,∞).
Increasing and decresingFrom the graph, the function is classified as decreasing or increasing according to the direction of movement in the graph, as follows:
Decreasing: Right and down.Increasing: Right and up.Hence the intervals are given as follows:
Increasing: (-0.366, 1.366) U (2, ∞).Decreasing: (-∞, -0.366) U (1.366, 2).Relative maximum and relative minimumThe relative minimum is when the graph of the function changes from decreasing to increasing, hence it is at these two following points:
(-0.366, -5.848) and (2,-1).
The relative maximum is when the function changes from increasing to decreasing, hence it is at this following point:
(1.366, -0.652).
End behaviorThe end behavior of the function is given by the limits of the function when x go to infinity, looking to the left and to the right of the graph of the function, hence:
Left: Moves up, hence as x -> -∞, f(x) -> ∞.Right: Moves up, hence as x -> ∞, f(x) -> ∞.More can be learned about functions at https://brainly.com/question/28949511
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the probility of alvins mother will server rice with dinner is 0.78 the probilty that she will server carrots is with dinner is 0.30
The probability of both rice and carrots being served with dinner is 23.4%.
The probability of Alvin's mother serving rice with dinner can be expressed using the formula P(Rice) = 0.78. This means that the probability of Alvin's mother serving rice with dinner is 78%. The probability of Alvin's mother serving carrots with dinner can be expressed using the formula P(Carrots) = 0.30. This means that the probability of Alvin's mother serving carrots with dinner is 30%. To calculate the combined probability of both rice and carrots being served with dinner, we can use the formula P(Rice and Carrots) = P(Rice) * P(Carrots) = 0.78 * 0.30 = 0.2340. This means that the probability of both rice and carrots being served with dinner is 23.4%.
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pay:11.71 per hour
hours:11 hours per week
Answer:
$128.81 per week
$515.24 per month
$6182.88 per year
Step-by-step explanation:
\(\frac{11.71}{y} :\frac{1}{11}\)
y = 128.81
\(\frac{128.81}{y} :\frac{1}{4}\)
y = 515.24
\(\frac{515.24}{y}: \frac{1}{12}\)
y = 6182.88
simplify this addition 2m+3m+(-6m)
Answer:
-m
Step-by-step explanation:
2m+3m+(-6m)=2m+3m-6m
=5m-6m
=-m
Answer:
-m
Step-by-step explanation:
2m+3m+(-6m)
Remove parentheses.
2m+3m-6m
Add and subtract.
-1m or -m
Hope this helps :)
PLS HELP ME WITH THIS
Using it's concept, the experimental probability of getting an odd number and a number greater than 6 is given by:
1/5.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes. An experimental probability is calculated considering the results of previous trials.
In this problem, there are 10 trials, and of those, 2 of them, trial 8 and trial 10, resulted in an odd number and a number greater than 6, hence the probability is:
p = 2/10 = 1/5.
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What’s the answer to these?
Verify experimentaly that the exterior angle triangle is equal to sum of its two non-adjacent interior angles of a triangle
will be marked as brainliest
Answer:
The exterior angle of a triangle is equal to the sum of its two non-adjacent interior angles, as proven by countless experiments and observations in geometry.
To verify this relationship experimentally, one can construct a triangle using any three line segments and measure the three interior angles using a protractor. Then, one can extend one of the sides of the triangle to create the exterior angle, and measure its size using the same protractor.
It will be observed that the exterior angle is equal to the sum of the two non-adjacent interior angles. This holds true for any triangle, regardless of its size or shape, and has been verified through numerous experiments conducted over the centuries.
In conclusion, it can be stated with confidence that the exterior angle of a triangle is indeed equal to the sum of its two non-adjacent interior angles, a fact that has been verified time and again through empirical observation and experimentation.
20.
Identify the vertex of the parabola.
A. (2, 7)
B. (4, 3)
C. (6, 7)
D. (3, 4)
Helppppppppppppppppppppppppppppppppppppppp
Answer:
B
Step-by-step explanation:
Answer:
the answer B
Step-by-step explanation:
A square sandbox has an area of 25 ft? What is the length of each of its sides (x)? Write an
equation and solve. What is the perimeter of the box?
Answer:
A = 5*5=25
P = 5 + 5 + 5 + 5 = 20
Explanation:
If a square has an area of 25 ft then we need to look at the GCF
1,25 5,5 25,1
since it's a square its sides are equal so 5,5 are our length and width.
5 * 5 = 25
the perimeter is all sides added together, so if all sides are equal to 5 the perimiter is
5+5+5+5 = 20
a²+2b ÷ 3 when a=6,b=8 and c=2?
The value of the expression (A²+2B) ÷ 3 when a=6, b=8 is approximately 17.33.
What is algebra?
Algebra is a branch of mathematics that deals with mathematical operations and symbols used to represent numbers and quantities in equations and formulas. It involves the study of variables, expressions, equations, and functions.
There seems to be a typo in your expression. You have provided values for a and b, but there is no variable c in the expression. I assume you meant to write:
(A²+2B) ÷ 3
Substituting the given values of a = 6 and b = 8, we get:
(6² + 2(8)) ÷ 3
= (36 + 16) ÷ 3
= 52 ÷ 3
= 17.33
Therefore, the value of the expression (A²+2B) ÷ 3 when a=6, b=8 is approximately 17.33.
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The strength of a rectangular beam varies
directly as the square of it depth. If the strength
of a beam 10 inches deep is 3600 pounds per
square inch, what is the strength of a beam four
six inches deep?
Answer:
1296 pounds per square inchStep-by-step explanation:
Direct variation equation:
y = kxIn this case it is:
y = kx², where y- strength, x- depth of the beam, k- coefficientSubstitute the given values and solve for k:
3600 = k*10²3600 = 100kk = 3600/100k = 36The equation becomes:
y = 36x²Now, find the value of y, when x is 6:
y = 36*6² = 1296Note, I took the depth as 6 inches but the question is a bit confusing by saying "four six inches". If it is 4 inches then your answer will be:
y = 36*4² = 576a rectangular field measures 90 meters by 162 meters. what will it cost to cover the field with pallets of grass each covering 90 squard yards and costing $213 per pallet
The cost of covering the field with grass pallets is $40996.58.
Given that the rectangular field measures 90 m and 162 m.
Hence, the area of the field is 90 X 162 m²
The grass pallets are sure in shape with an area covering 90 square yards.
1 m = 1.09 yards
Hence,
1 m² = 1.09² square yards
Hence,
90 X 162 m² = 90 X 162 X 1.09² square yards
Hence the number of pallets to be used is
(90 X 162 X 1.09²) / 90
= 162 X 1.09² pallets.
= 192.4722 pallets.
1 pallet costs $213
Hence,
192.4722 pallets cost
192.4722 X 213
= $40996.58
Therefore we get the cost of covering the field with grass is $40996.58.
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Q8.
ABC DEF and PQRS are parallel lines
BEQ is a straight line
work out the angle marked x
The answer is 40°
hope this helps
achel rolls two number cubes, each with sides that are labeled 1 to 6. What is the probability that onennumber cube lands on a 1 and the other lands on an even?
Answer:
immma send you the link friend me on here
Step-by-step explanation:
Y
2
0
A
с
B
o'
D
Which point is located at
(11.2)
The point that is located at the ordered pair (4, -2) is given as follows:
Point B.
How to define the ordered pair?The general format of an ordered pair is given as follows:
(x,y).
In which the coordinates are given as follows:
x is the x-coordinate.y is the y-coordinate.On the coordinate plane, we have that:
x is the horizontal coordinate.y is the vertical coordinate.Hence the coordinates for this problem are given as follows:
A(-2, 4), B(4, -2), C(-4, 2) and D(2, -4).
Missing InformationThe graph is given by the image presented at the end of the answer.
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can you please help me solve this
Answer:
The answer is A because the answer to the equation is x^{2}= -6 and the 7 is negative
Step-by-step explanation:
Hope this helps :)
Simplify -4.5+4.2+5.6-7.3
Answer:
-2
Step-by-step explanation:
Hope you do well on your assignment!
Answer:
-2 is the answer
Step-by-step explanation:
Harry Potter has a potion that can change voracious vampires into harmless hobbits. But the chemical evaporates over time and when the concentration in the potion is too weak, it turns the vampires into destructive Demogorgons. Oh no! The half-life of the potion means the amount of time it takes for the potion to lose half of its existing power, measured in magical units. This potion has a half-life of 2 months. Which statement about the potion's strength is correct? * a. Of the original 160 magical units, 5 magical units are left after 10 months of mixing the potion. b. Of the original 160 magical units, 16 magical units are left after 10 months of mixing the potion. c. Of the original 160 magical units, less than 1 magical unit is left after 10 months of mixing the potion. d. Of the original 160 magical units, 20 magical units are left after 10 months of mixing the potion e. Of the original 160 magical units, 80 magical units are left after 10 months of mixing the potion.
Answer:
im going to say c
Step-by-step explanation:
if its has 160 units and goes to half-life after 2 months im assuming it loses 1/2 of the units so in order for it to lose that many it will have to lose 40 units a month so i say its c after 10 months there will be less than 1 unit in the potion
hope this helps im sorry if im wrong have a blessed day :)
1. inverse of a conditional Formed by exchanging the hypothesis and the conclusion and negating both of them. 2. contrapositive of a conditional A statement formed by interchanging the hypothesis and the conclusion in a conditional statement. 3. converse of a conditional A new statement formed by negating both the hypothesis and the conclusion.
See below for the vocabularies and their correct definition
Missing part of the questionMatch the following vocabulary
How to match the vocabulary?The terms are given as:
inverse of a conditionalcontrapositive of a conditional converse of a conditionalTo get the inverse of a conditional, the hypothesis and the conclusion are negated, without interchanging them.
So, we have:
Inverse of a conditional ⇒ A new statement formed by negating both the hypothesis and the conclusion.
To get the contrapositive of a conditional, the hypothesis and the conclusion are negated, after interchanging them.
So, we have:
Contrapositive of a conditional ⇒ Formed by exchanging the hypothesis and the conclusion and negating both of them.
To get the converse of a conditional, we simply interchange the hypothesis and the conclusion, without negating them
So, we have:
Converse of a conditional ⇒ A statement formed by interchanging the hypothesis and the conclusion in a conditional statement.
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Answer:
The answer is Convers because it literally takes the hypothesis and the conclusion and interchanges them.
Step-by-step explanation:
true or false: when dealing with fixed effects, a de-meaned model approach is superior to the lsdv approach because the de-meaned model gives us more accurate coefficient estimates.
The statement that "when dealing with fixed effects, a de-meaned model approach is superior to the lsdv approach because the de-meaned model gives us more accurate coefficient estimates" is true.
Fixed effects are a type of regression technique used to understand the effect of a single variable across different groups (such as across countries, across states, across individuals, etc.) by comparing the variance of the variable within each group to the variance of the variable across all groups.
When conducting a fixed effects regression, researchers must choose between the least squares dummy variable (LSDV) and de-meaned model approaches.Both models produce unbiased estimates of the coefficients, but the LSDV model has an advantage in that it provides more flexibility when dealing with interactions between fixed effects and time-varying covariates. On the other hand, the de-meaned model is preferred for reasons of computational efficiency and it can handle certain types of data that the LSDV model cannot (such as panel data with a small number of time periods).
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Performance measures dealing with the number of units in line and the time spent waiting are called
A. queuing facts.
B. performance queues.
C. system measures.
D. operating characteristics.
Performance measures dealing with the number of units in line and the time spent waiting are called D. operating characteristics.
Operating characteristics are performance measures that provide information about the operational behavior of a system. In the context of queuing theory, operating characteristics specifically refer to measures related to the number of units in line (queue length) and the time spent waiting (queueing time) within a system. These measures help assess the efficiency and effectiveness of the system in managing customer or job arrivals and processing.
The number of units in line is an important indicator of how congested a system is and reflects the amount of work waiting to be processed. By monitoring the queue length, managers can determine if additional resources or adjustments to the system are required to minimize customer wait times and enhance throughput.
Similarly, the time spent waiting, often referred to as queueing time, measures the average or maximum amount of time a customer or job must wait before being serviced. This measure is crucial in assessing customer satisfaction, as excessive wait times can lead to dissatisfaction and potential loss of business.
Operating characteristics provide quantitative insights into these key performance indicators, allowing organizations to make informed decisions regarding resource allocation, process improvements, and service level agreements.
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Find the sum of the geometric series 9000-900 +...+ 0.009
a) 9999.999
b) 8000.001
c) 90,000
d) 8181.819
Answer:
the answer is (d) 8181.819.
help i will make u brainllest
Answer:
4 sqrt(7)
Step-by-step explanation:
We can use the leg rule
hyp leg
------- = -------------------
leg part
9+7 z
------- = -------------------
z 7
Using cross products
(9+7) *7 = z^2
16*7 = z^2
112 = z^2
Taking the square root of each side
sqrt( 16*7) = sqrt(z^2)
4 sqrt(7) = z
f(x) = -x2 - 9x
Find f(-2)
Answer:
22
Step-by-step explanation:
replace -2 for every in the equation:
-(-2)x2-9x-2=22
Answer:
f(-2)=14
Step-by-step explanation:
\(f(x) = -x^2 - 9x\\\\f(-2) = -(-2)^2-9(-2)\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:exponents}\:\left(-2\right)^2\::\quad 4\\=-4-9\left(-2\right)\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:9\left(-2\right)\::\quad -18\\\\=-4-\left(-18\right)\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:-4-\left(-18\right)\:\\f(-2):\quad 14\)
0.1(-90 + 50a) in distributive property
Given:
\(0.1(-90 + 50a)\)
Apply the distributive law: \(a(b+c)=ab+ac\)
\(0.1(-90 + 50a)=0.1(-90)+0.1\times50a\)
\(=0.1(-90)+0.1\times50a\)
Simplify \(0.1(-90)+0.1\times50a\):
\(\boxed{\bold{=-9+5a}}\)
due today help meeeeeee
Answer:
√(209)
Step-by-step explanation:
Since <B is a right angle, AC is the hypotenuse and AB and BC are legs.
(AB)² + (BC)² = (AC)²
(4 mm)² + (BC)² = (15 mm)²
16 mm² + (BC)² = 225 mm²
(BC)² = 209 mm²
BC = √(209) mm