Answer:
The aswer is 1:00 AM to 1:00 PM.
Step-by-step explanation:
suppose the coeffi cie nt matri x of a linear syste m of three equations in three variables has a pivot in each column. explain why the syste m has a unique solution.
The pivot elements are utilised to eliminate variables one at a time until a unique solution.
If there is a pivot in each column of the coefficient matrix for a linear system of three equations in three variables, the matrix is row equivalent to the identity matrix. This shows that there is only one possible solution to the set of equations.
If you think about how row operations are used to solve a system of linear equations, you can see why this is the case. In the system of equations, the leading coefficients are corresponding to the pivotal elements in the matrix. The pivot elements are utilised to eliminate variables one at a time until a unique solution is produced during the row-reducing procedure of the matrix to row echelon form or reduced row echelon form.
With a pivot in each column, the coefficient matrix.
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A golf ball is hit from the ground with an initial speed of 192 feet per second. assume the starting height of the ball is 0 feet. how long will it take the golf ball to hit the ground?
It will take the golf ball 12 seconds to hit the ground using the kinematic equation for vertical motion.
To determine the time it takes for the golf ball to hit the ground, we can use the kinematic equation for vertical motion:
\(h = ut + (1/2)gt^2\)
Where:
h is the height (0 feet, as the ball is on the ground)
u is the initial velocity (192 feet per second)
g is the acceleration due to gravity (-32 feet per second squared, considering downward direction)
t is the time we want to find
Plugging in the given values, we get:
\(0 = (192)t + (1/2)(-32)t^2\)
Simplifying the equation, we have:
\(-16t^2 + 192t = 0\)
Factoring out t, we get:
t(-16t + 192) = 0
Setting each factor equal to zero, we have:
t = 0 (not applicable in this case)
-16t + 192 = 0
Solving for t, we get:
-16t = -192
t = 12
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The time it takes for the golf ball to hit the ground is approximately 11.92 seconds.
The time it takes for the golf ball to hit the ground can be determined using the equation of motion. We can use the formula:
h0 = 0
v0 = 192
g = 32.2
a = 16.1
b = 192
t1 = 0
t2 = -b / a
t(-16t + 192) = 0
Setting each factor equal to zero, we have:
t = 0 (not applicable in this case)
-16t + 192 = 0
Solving for t, we get:
-16t = -192
t = 12
t2 >= 0:
time_to_hit_ground = t2
time_to_hit_ground = t1
The time it takes for the golf ball to hit the ground is approximately", round(time_to_hit_ground, 2 seconds.
The time it takes for the golf ball to hit the ground is approximately 11.92 seconds.
Since time cannot be negative in this context, we discard the negative solution. Therefore, the time it takes for the golf ball to hit the ground is approximately 11.92 seconds.
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An airplane was flying at 368 feel. It ascended 250 feet. What is its elevation now?
Answer:
118 feet.
Step-by-step explanation:
have a great day:)
Answer:
618
Step-by-step explanation:
3. What fraction of a revolution does the hour hand of a clock turn through when: (a) it starts at 3 and stops at 11
Answer:
2/3.
Step-by-step explanation:
Full revolution = 12 hours
11 - 3 = 8 hors
So it is 8/12 = 2/3 of a revolution.
A psychologist studying the effects of positive thinking" on cognitive ability designs the following study: 120 male volunteers are divided into two groups by random assignment. Eighty female volunteers are randomly divided into two groups of 40 by the same method. One group of 60 males and 40 females is asked to write down three things they feel that they are good at doing. The other group of 60 males and 40 females is asked to write down what they ate for breakfast. All 100 subjects then take a SAT Math practice test, and the means for the two groups are compared. Which of the following is a correct description of this study?
i. An observational study
ii. A completely randomized experiment
iii. A matched pairs experiment
iv. A stratified random experiment
v. A randomized block experiment
All subpars are not correct.
In a completely randomized experiment, the subjects are randomly assigned to different treatment groups. In this study, the male and female volunteers are divided into two groups (group 1 and group 2) using random assignment. This allows the researcher to evaluate the effect of positive thinking on cognitive ability by comparing the performance of the two groups.
In a completely randomized experiment, participants are randomly assigned to different groups or conditions. In this study, the male and female volunteers were randomly divided into two groups, and one group was asked to write down their skills while the other group was asked to write down their breakfast. This random assignment ensures that any differences observed between the two groups can be attributed to the manipulation (positive thinking vs. breakfast) rather than pre-existing differences between the participant
Therefore, all subpars are not correct.
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Joe borrowed $8000 at a rate of 14%, compounded semiannually. Assuming he makes no payments, how much will he owe after 3 years?
Do not round any intermediate computations, and round your answer to the nearest cent.
If Joe borrowed $8000 at a rate of 14%, he will owe $11,992.18 after 3 years
We can use the formula for compound interest to calculate how much Joe will owe after 3 years:
A = P(1 + r/n)ⁿt
where:
A = the amount Joe will owe after 3 years
P = the initial principal (the amount Joe borrowed), which is $8000 in this case
r = the annual interest rate as a decimal, which is 0.14
n = the number of times the interest is compounded per year, which is 2 (since it's compounded semiannually)
t = the number of years, which is 3
Plugging in the values, we get:
A = 8000(1 + 0.14/2)²ˣ³
= 8000(1 + 0.07)⁶
= 8000(1.07)⁶
= 8000(1.499022)
= 11992.18
Therefore, Joe will owe approximately $11,992.18 after 3 years
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What is the mean of the data set? 17, 24, 26, 13 *
Mark only one oval.
4
13
20
Answer:20
Step-by-step explanation: 17+24+26+13=80
Divide by how many numbers there are. Answer: 20
Answer:
20
Step-by-step explanation:
Mean = Sum divided by the number of terms
(17+24+26+13)/4
(80)/4 = 20
Mean = 20
The table below shows the linear relationship between the number of people at a picnic and the total cost of the picnic.
A two column table with five rows. The first column, Number of People, has the entries, 6, 9, 12, 15. The second column, Total Cost in dollars, has the entries, 52, 58, 64, 70.
Which statements about the function described by the table are true? Check all that apply.
The independent variable is the number of people.
The initial value (initial fee) for the picnic is $40.
The rate of change is $8.67 per person.
As the number of people increases, the total cost of the picnic increases.
If 4 people attended the picnic, the total cost would be $46.
The true statements are:
The independent variable is the number of people.The rate of change is $8.67 per person.As the number of people increases, the total cost of the picnic increases.What are the true statements?The independent variable is the variable that determines the value of the dependent variable. There is a positive relationship between the number of people at the picnic and the total cost. This is because it can be seen as the number of people at the picnic increases, the total cost changes.
Rate of change = total cost / number of people
$52 / 6 = $8.67
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Answer:
A, B, D
Step-by-step explanation:
right on edge
HELP I HAVE 10 MINUTES!!
-109+9x=86-4x
Answer:
x=15
Step-by-step explanation:
\(-109+9x=86-4x\\ +109+4x=+109+4x\\13x=195\\x=15\)
add 109 to both sides and add 4x to other sides
divide 13 by 195
Juana compró una camioneta 4x4 a S/ 42 000; además, sabe que la camioneta se depreciará (bajará su precio) en forma lineal durante 6 años. Si al quinto año la camioneta tendrá un valor de S/ 21 000, ¿cuál es el valor de la depreciación de la camioneta?
Answer:
Una relación lineal es de la forma:
y = a*x + b.
donde a es la pendiente y b es la ordenada al origen.
en este caso, y es el precio de la camioneta, x es el numero de años que pasaron, a es la razon de depreciación de la camioneta y b es el precio inicial de la camioneta, b = $42,000.
Sabemos que después de 5 años, el precio de la camioneta es 21,000, entonces podemos resolver:
$21,000 = a*5 + $42,000
a*5 = $21,000 - $42,000 = -$21,000
a = -$21,000/5 = -$4,200
Esto significa que el precio decae $4,200 por año
El valor de depreciación de la camioneta es de $4200 por año.
Dado que Juana compró una camioneta 4x4 a $42 000; y además, sabe que la camioneta se depreciará (bajará su precio) en forma lineal durante 6 años, para determinar, si al quinto año la camioneta tendrá un valor de $21 000, cuál es el valor de la depreciación de la camioneta, se debe realizar el siguiente cálculo:
(42000 - 21000) / 5 = X 21000 / 5 = X4200 = XPor lo tanto, el valor de depreciación de la camioneta es de $4200 por año.
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i need help to solve this
Answer:
I'm pretty sure the answer to the 1st question is 2.46 and the answer to the 2nd question is just 15. (I'm sorry if I'm wrong!)
2 + 2 is ????????????????????
Answer:
4
Step-by-step explanation:
2+2=4
ll. ll
llll
ll
ll
llll
Select the correct answer. two triangles, abc and cde, share a common vertex c on a grid. in triangle abc, side ab is labeled 4x minus 1, side bc is labeled 4, side ac is labeled 5. in triangle cde, side cd is labeled 5, side de is labeled x plus 2, side ce is labeled 4. if geometry symbol represented as small triangle with three sides. abc geometry congruent symbol represented as two small horizontal parallel lines and a horizontal symbol s. geometry symbol represented as small triangle with three sides. dec, what is the value of x? a. x = 8 b. x = 5 c. x = 4 d. x = 1 e. x = 2
Answer:
x=1
Step-by-step explanation:
The value of x is 1. So, the correct answer is d. x = 1.
To find the value of x, we can use the fact that the corresponding sides of congruent triangles are equal.
In triangle ABC, side AB is labeled 4x - 1, side BC is labeled 4, and side AC is labeled 5.
In triangle CDE, side CD is labeled 5, side DE is labeled x + 2, and side CE is labeled 4.
Since triangle ABC is congruent to triangle CDE, we can set up the following equations:
4x - 1 = 5
4 = x + 2
Simplifying these equations, we get:
4x = 6
x = 1
Therefore, the value of x is 1. So, the correct answer is d. x = 1.
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How would you begin to plot the ordered pair ( 6,2)?
Dominic is shopping at a store that is offering a discount of 15%, percent off the usual price of any item. 1. Write an equation that represents the amount of discount offered (d) on an item whose usual price is p. 2. How much discount does Dominic receive on an item whose usual price is pounds 80pounds,
Dominic receives 12 pounds on an item whose usual price is 80 pounds
Write an equation that represents the amount of discount offered (d) on an item whose usual price is p.The given parameters are:
Discount =15%
Price = p
Amount of discount = d
The equation that represents the amount of discount offered (d) on an item whose usual price is p is
d = Discount * p
This gives
d = 15% * p
Evaluate
d = 0.15p
How much discount does Dominic receive on an item whose usual price is 80 pounds,In (a), we have
d = 0.15p
Here, p = 80
So, we have
d = 0.15 * 80
Evaluate
d = 12
Hence, Dominic receives 12 pounds on an item whose usual price is 80 pounds
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Answer:
If the store is offering a discount of 15% off the usual price
the equation is \(D=0.15p\)
Dominic gets a £12
discount on an item whose usual price i
If TR = 9 ft, find the length of PS. Round to the nearest tenth place. g Р T R. 16 S Use 3.14 for π
Arc PR is half a circle, which is 180 degrees.
Arc PS + Arc SR = 180
Arc PS + 16 = 180
Arc PS = 180 - 16
Arc PS = 164°
The length of an arc is given by the formula,
\(\frac{\theta}{360}\times2\pi r\)Where
θ is the degree measure of the arc
r is the radius of the circle
Given
θ (Arc PS) = 164
r = TR = 9
Let's calculate length of PS:
\(\begin{gathered} \frac{164}{360}\times2\pi(9) \\ =\frac{164}{360}\times18\pi \\ =\frac{82}{180}\times18\pi \\ =25.76 \end{gathered}\)Rounding the answer to the nearest tenth,
Answer
25.8 ft20 points!
I need help on these!
Answer:
Step-by-step explanation:
16) -40
17) -2
18) -5
19) -10
That’s all.
savage/ Savorythe meaning of these words are a. Similarb. Contradictory c. Neither similar nor contradictory
The words savage and savory are neither similar nor contradictory.
What is Contradiction?Contradiction is a term used to indicate mutually opposite things. It is commonly used in statements where both the statements cannot be true.
Savage is a word the meaning of which is wild or non cultivated in a context as an adjective. In another context, savage can be used as a noun to define an uncivilized or a brutal human.
On the other hand, savory is a completely different term which is used to define the taste of the dishes, typically in a positive way.
Hence the terms savage and savory are neither similar nor contradictory words.
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The perimeter of a rectangle can be found using the expression 2ℓ+2w
2
ℓ
+
2
w
, where ℓ represents the length and w represents the width. Find the perimeter when ℓ=6.2
ℓ
=
6
.
2
units and w=3.5
w
=
3
.
5
units.
__ units
Plus sign
Minus sign
Multiplication sign
Division sign
Big fraction
Superscript (Ctrl+Up)
Square root
Root
Equals sign
Not equal to
Less-than sign
Greater-than sign
Less-than or equal to
Greater-than or equal to
Parentheses
Pi
The perimeter of the rectangle when ℓ = 6.2 units and w = 3.5 units is 9.4 units
How to find the perimeter of a rectangle?The perimeter of a two-dimensional shape is the total length of the outline.
Since the perimeter of a rectangle can be found using the expression 2ℓ+2w
when ℓ=6.2 units and w = 3.5 units, you can get the perimeter by substituting ℓ=6.2 and w = 3.5 into the expression 2ℓ+2w. That is:
perimeter of rectangle = 2ℓ+2w
perimeter of rectangle = 2×6.2 + 2×3.5
perimeter of rectangle = 12.4 + 7
perimeter of rectangle = 19.4 units
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please see attachment below
Hey there!
Refer to the attached picture.
Hope it helps ya!
Match each polynomial with its end behavior. Some end behavior options may not have a matching polynomial.Column A1.f(x) = 2x3 + 3x4 + x2 - 1:f(x) = 2x3 + 3x4 + x2 - 12.f(x) = 1 - 3x + x2:f(x) = 1 - 3x + x23.f(x) = 9 + x4:f(x) = 9 + x44.f(x) = 2x + 5:f(x) = 2x + 5Column Ba.As x gets larger and larger in the positive direction, f(x) gets larger and larger in the positive direction. As x gets larger and larger in the negative direction, f(x) gets larger and larger in teh negative direction.b.As x gets larger and larger in either the positive or negative direction, f(x) gets larger and larger in the positive direction.
The correct answer is:
1. b
2. b
3. b
4. a
The first three functions have a positive coefficient and the biggest power is an even number. This means that no matter if the values are positive or negative, the image will always be positive.
In the last function, which is a linear equation, is clear the b option.
Write equations for the horizontal and vertical lines passing through the point (3,9)
Horizontal line:
Vertical line:
Answer:
Horizontal: y = 9
Vertical: x = 3
Step-by-step explanation:
Any point is given in the form (x,y). The first number is the x and the second number is the y.
Horizontal lines (a left-right line like the horizon) have an equation in the form "y = anumber" This works because a horizontal line has ZERO slope. So there is no x in the equation because--
y = 0x + b
y = b (a number, use the y-number from the point)
A vertical line has undefined slope so you can't even pretend to use a slope equation. A vertical line (up and down) has an equation in the form
"x = anumber" Use the x from the point.
Horizontal line through (3,9) is y=9.
Vertical line through (3,9) is x=3
Pls answer the question below, first correct answer gets brianliest!
Answer:
B, C, EStep-by-step explanation:
The options are:
A. incorrect as it has -9 as one of zero'sB. correct, has listed zero'sC. correct, has listed zero'sD. incorrect as it has 3/2 as one of zero'sE. correct, has listed zero'sNEED HELP ASAP! will rate 5 stars!!
A or D but i reckon A
Why can't the denominator of a fraction be negative?
When you divide a fraction by a negative number, it doesn't matter what happens to the denominator because the entire result, or quotient, is the reverse of whatever the original fraction was.
What is the denominator?In mathematics, a denominator is the lowest number in a fraction that indicates how many equal parts are divided into a whole.
It is a fraction's divisor. In this case, the denominator is 4, thus there are four components overall.
The top number in a fraction is referred to as the numerator, while the bottom number is referred to as the denominator.
4/5, for instance, is a fraction.
What happens to the denominator of a fraction when you divide it by a negative number is unimportant because the entire result, or quotient, is the opposite of whatever the original fraction was.
Therefore, when you divide a fraction by a negative number, it doesn't matter what happens to the denominator because the entire result, or quotient, is the reverse of whatever the original fraction was.
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Hurry please help ASAP I will mark brainliest
Answer:yep
Step-by-step explanation:
Answer:
Well both are answered already and i checked both are right I don't know if that's what you wanted...
A circle has a circumference of 7{,}8507,8507, comma, 850 units. What is the radius of the circle?
Use 3. 14 for pi and enter your answer as a decimal
for an anova, the within-treatments variance provides a measure of the variability inside each treatment condition.true or false
In ANOVA (Analysis of Variance), the total variability in the data is partitioned into two components: True. The within-treatments variance in an ANOVA provides a measure of the variability inside each treatment condition.
In ANOVA (Analysis of Variance), the total variability in the data is partitioned into two components: the between-treatments variability and the within-treatments variability. The between-treatments variability represents the differences among the treatment conditions, while the within-treatments variability measures the variability within each treatment condition.
The within-treatments variance, also known as the error variance or residual variance, quantifies the variation that cannot be attributed to the differences among treatment conditions. It captures the random variability within each treatment group, accounting for the individual differences and random errors present within the groups.
By analyzing the within-treatments variance, we can assess how much variation exists within each treatment condition and evaluate the consistency or homogeneity of the data within each group. It helps determine the extent to which the treatment conditions explain the observed differences and whether any remaining variation is due to random fluctuations or other factors.
Hence, the statement that the within-treatments variance provides a measure of the variability inside each treatment condition is true in the context of ANOVA.
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a bag contains 12 yellow and 8 purple marbles. joe pays $2 for the opportunity to pick a marble from the bag. if he picks a yellow marble, he does not get anything. if he picks a purple marble, he gets $k. the game is fair. find the value of k. give an exact answer. do not include the dollar sign in your answer.
The value of k will be $0.8 with a probability of 40%.
What is probability?Probability is a number that indicates the likelihood of an event occurring. Probability is defined as the ratio of favorable outcomes to all outcomes.
Probability = Number of favorable outcomes / Number of samples
Given that a bag contains 12 yellow and 8 purple marbles. joe pays $2 for the opportunity to pick a marble from the bag. If he picks a yellow marble, he does not get anything. if he picks a purple marble, he gets $k.
The probability of getting purple marbles will be,
Probability = 8 / 20
Probability = 2 / 5
Probability = 0.4 or 40%
The value of k will be,
K = $22 x 0.4
k = $0.8
Therefore, the value of k will be $0.8 with a probability of 40%.
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Use synthetic division to solve (2x^3+4x^2-35x+15)/(x-3). What is the quotient?
Answer:
the quotient is 2x^2+10x-5