Plz help. Will give brainliest
Answer:
8 maybe
Step-by-step explanation:
Answer:
50%
Step-by-step explanation:
i believe the answer is 50% i think i did this before and got it right? or maybe i'm mistaken. If right can i get brainliest? That would really help thx :)
A bag of popcorn is placed in a microwave. After the first kernel pops, the number of kernels popped doubles every 30 seconds. If it takes exactly two minutes for every kernel in the bag to have popped, what would the time be on the microwave when 25% of the kernels have popped?
Let there be N number of kernels in the bag.
Given that the number o
Which of the following arguments are invalid and which are valid? Prove your answer by replacing each proposition with a variable to obtain the form of the argument. Then prove that the form is valid or invalid. The patient has high blood pressure or diabetes or both. The patient has diabetes or high cholesterol or both. The patient has high blood pressure or high cholesterol.
Both arguments are valid.
The validity of the arguments can be determined by using the concept of propositional logic.
The patient has high blood pressure or diabetes or both. The patient has diabetes or high cholesterol or both.This argument can be represented as: (P∨D∨B)∧(D∨C∨B). The form of the argument is p ∧ q, which is a valid form.
The patient has high blood pressure or high cholesterol.This argument can be represented as: P∨C. The form of the argument is p ∨ q, which is also a valid form.
So, both arguments are valid. The validity of an argument depends on the form of the argument and not the specific proposition used. In both cases, the form of the argument is valid, so the argument is also valid.
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suppose that . for example, . for how many distinct integers does have exactly three distinct elements?
The *n will have exactly three distinct elements for 5 distinct integers .
In the question ,
it is given that ,
the set *n is = {n - 2, n + 2, 2n, n/2} ,
we have to find that for how many distinct integers does *n will have exactly three distinct elements .
we know that *n will have exactly three distinct elements if exactly 2 of the elements of {n - 2, n + 2, 2n, n/2} are same .
Solving the two equations one by one ,
we get ,
If n-2 = n+2 ;
n - n = 2 + 2
0 = 4 , So , No Solution .
if n - 2 = 2*n
2n - n = -2
So ,n = -2
if n - 2 = n/2 ,
2(n - 2) = n
2n - 4 = n
2n - n = 4
So , n = 4
If n+2 = 2n ,
2n - n = 2 , So , n = 2 .
if n + 2 = n/2 ,
then n = -4 .
If 2n = n/2 ,
then n = 0,
So , the integers are -4 , -2 , 0 , 2 , 4 .
Therefore , there will be 5 distinct integers .
The given question is incomplete , the complete question is
Suppose that *n = {n - 2, n + 2, 2n, n/2}. For example, *6 = {3,4,8,12}. for how many distinct integers does *n have exactly three distinct elements ?
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Does the value of the standard deviation depend on the value of the mean?A)No, because the center of a distribution and the spread are not related.B)Yes, because the mean must be known in order to calculate the standard deviation.C)Yes, because if the mean gets larger, the standard deviation will also get larger.
The correct option is A) No, because the center of a distribution and the spread are not related
How standard deviation depend on the value of the mean?The standard deviation is a measure of the spread or dispersion of a set of data. It is not directly related to the mean or average of the data.
The standard deviation is calculated based on the deviations of each data point from the mean, taking into account how many data points there are.
The mean does not affect the calculation of the standard deviation, as the formula for standard deviation is based solely on the data itself and not on any summary statistics like the mean.
The value of the standard deviation can remain the same even if the mean changes, and conversely, the mean can change without affecting the standard deviation.
Thus, option A) No, because the center of a distribution and the spread are not related is correct.
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at what point (x,y) is the function f(x)=6−7x closest to the point (−10,−4)? enter an exact answer.
The exact solution of this equation involves solving a quadratic equation, which may not result in a simple integer value for x.
To find the point (x, y) on the function f(x) = 6 - 7x that is closest to the point (-10, -4), we need to minimize the distance between the two points.
The distance between two points (x1, y1) and (x2, y2) is given by the formula:
d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
In this case, we want to minimize the distance between the point (-10, -4) and any point on the function f(x) = 6 - 7x. So we can set up the distance equation:
d = sqrt((-10 - x)^2 + (-4 - (6 - 7x))^2)
To find the point (x, y) that minimizes the distance, we can find the value of x that minimizes the distance equation. Let's differentiate the distance equation with respect to x and set it equal to zero to find the critical point:
d' = 0
Differentiating and simplifying the equation, we get:
(-10 - x) + (-4 - (6 - 7x))(-7) = 0
Solving this equation will give us the value of x at the closest point. Plugging this x-value into the function f(x) = 6 - 7x will give us the corresponding y-value.
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Darryl wants to add enough water to 8 gallons of a 10% bleach solution to make a 5% bleach solution. which equation can he use to find x, the number of gallons of water he should add? original (gallons) added (gallons) new (gallons) amount of bleach 0.8 0 0.8 amount of solution 8 x 8 x startfraction 0.8 over 8 x endfraction times startfraction 5 over 100 endfraction = 1 startfraction 0.8 over 8 x endfraction times = startfraction 5 over 100 endfraction startfraction 0.8 over 8 x endfraction = startfraction 100 over 5 endfraction startfraction 0.8 over 8 x endfraction divided by startfraction 5 over 100 endfraction = 1
0.80 = (x + 8)(0.05) is the equation used to find x.
Given,
Darryl has a solution of bleach with the concentration of 10%.
10% bleach solution means in 100 ml solution amount of bleach is 10 gm
Here,
Darryl wants to change the concentration of this solution to 5%, means he wants to add water so that amount of liquid will change but amount of bleach in grams will remain the same.
Amount of bleach in 8 gallons of 10% solution of bleach will be = (Volume)×(concentration) = 8(.10) gm
Let Darryl adds x gallons of water in 10% solution of bleach to make it 5% solution of bleach.
Amount of bleach in 5% solution of bleach = (x + 8)(0.05) gm
Now in both the concentrations of bleach solution amount of bleach will remain same.
So, 0.8 = (x + 8)(0.05) will be the equation from which he can find the value of x.
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Which method or methods listed below describe a solid system for keeping financial records? I. Making a mental note of all purchases made during the week. II. Recording money spent in a hand-held notebook. III. Organizing receipts and transactions on a computer. A. I only b. II only c. II and III d. I, II, and III Please select the best answer from the choices provided A B C D.
Financial records are important records and thus, needs to be saved safely. The method for solid system to keep it is: Option d. I, II, and III
How to safely keep financial records and why?Financial records are records of all financial transactions and receipts. They're needed for future cases like some contradictions, to get past details, to analyze data to make prediction about future sale and for development of the organization etc.
For keeping them, they should be saved in an easily accessible, and hardly destroy-able place. So that its prevented safely but accessible faster with correct authentication.
For the given case, for solid system for keeping financial records, we can actually follow all the three steps provided.
I. Making a mental note of all purchases made during the week. II. Recording money spent in a hand-held notebook. III. Organizing receipts and transactions on a computer.
Thus,
The method for solid system to keep it is: Option d. I, II, and III
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Answer:
it do be D
Step-by-step explanation:
The vapor pressure of a given liquid will increase if:
a. the liquid is moved to a container in which its surface is very much larger.
b. the volume of the liquid is increased.
c. the volume of the vapor phase is increased.
d. the temperature is increased.
e. a more volatile liquid is added to the given liquid
The vapor pressure of a given liquid will increase if the temperature is increased.
Therefore the answer is (d).
Vapor pressure is defined as the pressure exerted by the vapor phase of a liquid in equilibrium with its liquid phase at a given temperature. When the temperature of a liquid is increased, the kinetic energy of its molecules also increases, which can lead to an increase in the number of molecules that escape from the liquid phase into the vapor phase. As a result, the vapor pressure of the liquid will increase.
Options a, b, and c do not necessarily cause an increase in vapor pressure. A larger container with a larger surface area (a) may lead to an increase in the rate of evaporation, but it will not necessarily result in an increase in vapor pressure. An increase in the volume of the liquid (b) or the vapor phase (c) would result in a decrease in the vapor pressure, not an increase. Adding a more volatile liquid to the given liquid (e) may result in a change in the vapor pressure, but it is not clear that it would necessarily result in an increase.
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Evaluate 2x+y, if x=1 and y=-3
x=1
y=-3
required to evaluate 2x+y
We therefore substitute for x and y in the above expression
2(1) + (-3) = 2 - 3 = -1
Declan said, "I know 3/4 is greater than 1/2, so that means 3/4 is greater than 6/12. " Does Declan’s reasoning make sense?
Declan's reasoning does make sense. This is because 3/4 and 1/2 have the same denominator, and 3/4 is a larger fraction than 1/2.
Therefore, it is reasonable to assume that 3/4 is greater than 6/12 because 6/12 simplifies to 1/2. Simplifying fractions means dividing the numerator and denominator by the same number, in this case, 6 is divisible by 2, so we can reduce the fraction to 1/2.
So, Declan is correct in his reasoning that 3/4 is greater than 6/12. It is important to understand the relationship between fractions and their denominators to make such comparisons accurately.
3/4 = 9/12
1/2 = 6/12
6/12 = 6/12
Since 9/12 (which is equivalent to 3/4) is greater than 6/12 (which is equivalent to 1/2), we can say that 3/4 is indeed greater than 6/12.
Therefore, Declan's reasoning is correct.
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What is the volume of this right cone?
40π cm^3
300π cm^3
400π cm^3
480π cm^3
I Hope this Helps You?
What is the volume of this right cone? 40π cm³ 300π cm³ 400π cm³ 480π cm³
✓ The answer is 400pi because the area of a cone is A=1/3*pi*r^2*h1/3*pi*100*12 = 400pi
Hans is planting a garden with snapdragons and daisies. the table shows some possible combinations of the two plants. if hans plants 29 daisies, how many snapdragons will he plant?
The linear equation y = -x+45 models the scenario.
Solving the linear equation, it exists found that Hans will paint 16 snapdragons.
What is linear equation?Since the rate of change exists always the exact, this question exists modeled by a linear equation.
Linear equation: y = mx + b
Where, m exists the slope and b exists the y-intercept.
To find the slope, we have to get two points (x, y), and the slope exists given by the change in y divided by the change in x.
Points: (11, 34) and (12, 33).
Change in y: 33 - 34 = -1
Change in x: 12 - 11 = 1.
Slope: m = -1/1 = -1
The equation of the line exists y = -x + b
Replacing one of the points, the y-intercept can be found.
Point (11, 34) means that when x = 1, y = 34.
y = -x + b
34 = -1+b
b = 45
Therefore, the equation y = -x+45 models the scenario.
29 daisies mean that y = 29, we have to estimate the value of x for which y = 29.
y = -x+45
simplifying the equation,
29 = -x+45
x = 45 - 29 = 16
The value of x = 16
Therefore, Hans will plant 16 snapdragons.
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Answer:
The equation ✔ x = 45 – y models the scenario.
Hans will plant✔ 16 snapdragons
Step-by-step explanation:
In the given figure ABCD, prove that
angleBCD= angleBAD+ angle ABC+angle ADC.
[Hint: Join A and C then extended AC to the point E]
We have proved that Angle BCD is equal to angle BAD plus angle ABC plus angle ADC, as required.
To prove that angle BCD is equal to angle BAD plus angle ABC plus angle ADC, we can use the following steps:
Step 1: Join points A and C with a line segment. Let's label the point where AC intersects with line segment BD as point E.
Step 2: Since line segment AC is drawn, we can consider triangle ABC and triangle ADC separately.
Step 3: In triangle ABC, we have angle B + angle ABC + angle BCA = 180 degrees (due to the sum of angles in a triangle).
Step 4: In triangle ADC, we have angle D + angle ADC + angle CDA = 180 degrees.
Step 5: From steps 3 and 4, we can deduce that angle B + angle ABC + angle BCA + angle D + angle ADC + angle CDA = 360 degrees (by adding the equations from steps 3 and 4).
Step 6: Consider quadrilateral ABED. The sum of angles in a quadrilateral is 360 degrees.
Step 7: In quadrilateral ABED, we have angle BAD + angle ABC + angle BCD + angle CDA = 360 degrees.
Step 8: Comparing steps 5 and 7, we can conclude that angle B + angle BCD + angle D = angle BAD + angle ABC + angle ADC.
Step 9: Rearranging step 8, we get angle BCD = angle BAD + angle ABC + angle ADC.
Therefore, we have proved that angle BCD is equal to angle BAD plus angle ABC plus angle ADC, as required.
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Given: Quadrilateral \(\displaystyle\sf ABCD\)
To prove: \(\displaystyle\sf \angle BCD = \angle BAD + \angle ABC + \angle ADC\)
Proof:
1. Draw segment \(\displaystyle\sf AC\) and extend it to point \(\displaystyle\sf E\).
2. Consider triangle \(\displaystyle\sf ACD\) and triangle \(\displaystyle\sf BCE\).
3. In triangle \(\displaystyle\sf ACD\):
- \(\displaystyle\sf \angle ACD = \angle BAD + \angle ADC\) (Angles of a triangle add up to \(\displaystyle\sf 180^\circ\)).4. In triangle \(\displaystyle\sf BCE\):
- \(\displaystyle\sf \angle BCE = \angle BAD + \angle ABC\) (Angles of a triangle add up to \(\displaystyle\sf 180^\circ\)).5. Since \(\displaystyle\sf \angle BCE\) and \(\displaystyle\sf \angle BCD\) are corresponding angles formed by transversal \(\displaystyle\sf BE\):
- \(\displaystyle\sf \angle BCE = \angle BCD\).6. Combining the equations from steps 3 and 4:
- \(\displaystyle\sf \angle BCD = \angle ACD = \angle BAD + \angle ADC\). - \(\displaystyle\sf \angle BCD = \angle BCE = \angle BAD + \angle ABC + \angle ADC\).Therefore, we have proven that in quadrilateral \(\displaystyle\sf ABCD\), \(\displaystyle\sf \angle BCD = \angle BAD + \angle ABC + \angle ADC\).
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What is the equation of the line that passes through the point (-5,-3)and has a slope of -3/5 ?
Answer: y = -3/5x - 6
Step-by-step explanation:
There are a few equations that can be used for this, but the simplest one would be y = mx + b
We are given:
y = -3
m = -3/5 (slope)
x = -5
b = ?
Our equation is this, we are solving for b
==> -3 = -3/5 ( -5) + b
==> -3 = -3/5 ( -5) + b ( multiply the brackets)
==> -3 = 3 + b ( subtract 3 to both sides)
==> -6 = b
Now we can make the desired equation in slope intercept form;
y = -3/5x - 6
Hope this helped! Have a great day :D
One week, taylor earned $203.40 at her job when she worked for 9 hours. if she is paid the same hourly wage, how many hours would she have to work the next week to earn $881.40?
Answer:
39 hours
Step-by-step explanation:
First solve for how much Taylor would earn per hour which is to divide 203.40 by 9
= 203.40÷9 = 22.6
Let x represent the unknown hours
If 22.6 = 1 hr
Then 881.40 = x solving this simultaneously becomes
881.40 ÷ 22.6 = 39
x = 39, hence it'll take Taylor 39 hours to earn $881.40
She have to work 39 hours the next week to earn $881.40.
In simple terms, the unitary method is used to find the value of a single unit from a given multiple. For example, the price of 40 pens is Rs. 400, then how to find the value of one pen here. It can be done using the unitary method. Also, once we have found the value of a single unit, then we can calculate the value of the required units by multiplying the single value unit.
In 9 hours she earned $203.40
∴ In 1 hour she earned $203.40/9 = $22.6
Let number of hours she worked to earn $881.40 be x.
∴ x = $881.40/ $22.6
x = 39 hours
Thus she have to work 39 hours the next week to earn $881.40.
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Tell whether the sequence is arithmetic. If it is, identify the common difference.
1/2,1/3,1/4, ….
1) Not arithmetic
2) Arithmetic, common difference is 1/6
3) Arithmetic, common difference is 2/3
4) Arithmetic, common difference is 1
Answer:
Not arithmetic
Step-by-step explanation:
the difference of successive terms in arithmetic sequences should be the same. notice that:
1/3-1/2 =/= 1/3 - 1/4
so it's not arithmetic.
this sequence is known as the harmonic sequence, and its sum diverges.
Find the slope of the line through the given points. c (1,3) and (0,−9)
If m ∠ ∠ ∠ ∠ 3 = 7x + 40 and m ∠ ∠ ∠ ∠ 4 = 2x + 23, find m ∠
Answer:
M=3+7x+40=4+2x+23
M=3+7x+40-4-2x-23
M=5x+20
M=5x=20
M=5x:5=20:5
M=4
When 3(2x + 9) = 4x - 7 is solved for X, the solution is
1
3.
is 17
4
xs-17
\(\\ \sf\longmapsto 3(2x+9)=4x-7\)
\(\\ \sf\longmapsto 6x+27=4x-7\)
\(\\ \sf\longmapsto 6x-4x=-7-27\)
\(\\ \sf\longmapsto 2x=-34\)
\(\\ \sf\longmapsto x=17\)
(−t 4 −5t 3 −10t 2 )+(9t 3 +3t 2 −1)
Answer:
\(\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1\)
Step-by-step explanation:
Given the expression
\(\left(-t^4\:-5t^3\:-10t^2\:\right)+\left(9t^3\:+3t^2\:-1\right)\)
Remove parentheses: (a)=a
\(=-t^4-5t^3-10t^2+9t^3+3t^2-1\)
Group like terms
\(=-t^4-5t^3+9t^3-10t^2+3t^2-1\)
Add similar elements
\(=-t^4-5t^3+9t^3-7t^2-1\) ∵ \(-10t^2+3t^2=-7t^2\)
Add similar elements
\(=-t^4+4t^3-7t^2-1\) ∵ \(-5t^3+9t^3=4t^3\)
Thus, the equivalent expression in simplified form:
\(\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1\)
a sequence is ---select--- sequence when the first differences are all the same nonzero number.
A sequence is arithmetic sequence when the first differences are all the same non-zero number.
An arithmetic sequence is a set of integers where each term is created by multiplying the preceding term by a defined number. The common difference of the series, which is a constant value, is the same for all following pairs of terms.
As a result, a sequence can be said to be arithmetic if its first differences all contain the same non-zero value. For instance, the arithmetic sequence 3, 6, 9, 12, 15,... has a common difference of 3.
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cual es el resultado de (7.006×10⁴¹)×(5.09×10²²)
Answer:
El resultado de (7.006×10⁴¹)×(5.09×10²²)=3.566054*10⁶⁴
Step-by-step explanation:
La notación científica es una manera rápida de representar un número utilizando potencias de base diez.
Los números se escriben como:
a*10ⁿ
donde:
a es un número real mayor o igual que 1 y menor que 10.n es un número entero, que recibe el nombre de exponente u orden de magnitud. Representa el número de veces que se desplaza la coma. Siempre es un número entero, positivo si se desplaza a la izquierda, negativo si se desplaza a la derecha.Para realizar la multiplicación con notación científica, debes multiplicar las magnitudes afectadas por las potencias de 10 y, por separado, multiplicar las potencias de 10, recordando la propiedad:
Si dos bases son iguales (el mismo número o variable), y son los factores de una multiplicación, ambas bases quedan en una sola y sus exponentes son sumados: xᵃ*xᵇ= xᵃ⁺ᵇEn este caso:
(7.006×10⁴¹)×(5.09×10²²)=(7.006*5.09)*(10⁴¹*10²²)=35.66054*10⁴¹⁺²²= 35.66054*10⁶³
Siguiendo el formato a*10ⁿ, debes ajustar el valor de la base a de manera que sea un número real mayor que 1 y menor que 10. Entonces, se mueve la coma decimal hacia la izquierda tantos espacios hasta llegar a la derecha del primer dígito. Y se escribe la base 10, al cual el exponente se suma la cantidad de espacios que se mueve la coma, que es un número positivo porque la coma se desplaza a la izquierda.
Entonces 35.66054*10⁶³= 3.566054*10⁶⁴
El resultado de (7.006×10⁴¹)×(5.09×10²²)=3.566054*10⁶⁴
A cylindrical tank has a diameter of 2.5 feet and a height of 4.8 feet. what is the lateral surface area of the tank to the nearest hundredth square foot?
Answer:
This is approximately \(37.7 ft^{2}\) to the nearest hundredth
Step-by-step explanation:
First of all, we will need to understand that to find the lateral surface area of the cylinder, we simply need to multiply the circumference of the circular base by the height of the cylinder.
In this case, the circumference of the circular base can be obtained by the formula
\(2 \pi r\)
Hence we will have the circumference as \(2 \times \pi \times \frac{2.5}{2}=7.85 feet\)
Tp get the Lateral area, we will simply have to multiply this value (7.85 feet )
by the height (4.8 feet)
7.85 X 4.8 =\(37.68 feet ^{2}\)
This is approximately \(37.7 ft^{2}\) to the nearest hundredth
Please Answer in ( a + bi ) form
Answer:
-10 - 4i
Step-by-step explanation:
We can rewrite the equation as (by getting rid of parentheses):
-8 + 3i - 2 - 7i
Now, we can add/subtract the values:
(-8-2) + (-7i+3i)
= -10 - 4i
What is 1/0 and how explain
Answer:0
Step-by-step explanation:anything divided or multiplied by zero is zero for example how many times does 6 go into 0? ....zero!
Sam bought a television for $535. The tax rate in Pennsylvania is 6%. What is the total amount Sam paid for the television? (Round your answer to the nearest cent.)
\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{6\% of 535}}{\left( \cfrac{6}{100} \right)535}\implies 32.10~\hfill \underset{ \textit{total amount} }{\stackrel{ 535~~ + ~~32.10 }{\text{\LARGE 567.10}}}\)
Find the length of the missing side of the right triangle.
24 ft
7 ft
O 25 ft
O 31 ft
O 22.96 ft
O 625 ft
Answer:
25 ft
Step-by-step explanation:
Side² = 24² + 7² = 625
√625 = 25 ft
Ryan opened a savings account with $1700 that pays no interest. He deposits an
additional $190 each week thereafter. How much money would Ryan have in the
account 32 weeks after opening the account?
HELP ME ASAP PLEASE
A student solves the following equation for all possible values of x: startfraction 8 over x 2 endfraction = startfraction 2 over x minus 4 endfraction his solution is as follows: step 1: 8(x – 4) = 2(x 2) step 2: 4(x – 4) = (x 2) step 3: 4x – 16 = x 2 step 4: 3x = 18 step 5: x = 6 he determines that 6 is an extraneous solution because the difference of the numerators is 6, so the 6s cancel to 0. which best describes the reasonableness of the student’s solution? his solution for x is correct and his explanation of the extraneous solution is reasonable. his solution for x is correct, but in order for 6 to be an extraneous solution, both denominators have to result in 0 when 6 is substituted for x. his solution for x is correct, but in order for 6 to be an extraneous solution, one denominator has to result in 0 when 6 is substituted for x. his solution for x is incorrect. when solved correctly, there are no extraneous solutions.
Answer:
Keep it simple c da answer
Step-by-step explanation:
Answer:c
Step-by-step explanation: