Answer:
c
Step-by-step explanation:
Answer:
yooo cca
Step-by-step explanation:
Linear Algebra
If A, B, and C are nxn invertible matrices, does the equation C-1(A+X)B-1=In have a solution, X? if so, find it
Yes, the equation C-1(A+X)B-1=In has a solution, X. To find the solution, first use C-1(A+X)B-1=In to simplify to C-1 AB-1=In+X. Next, use matrix multiplication to expand C-1AB-1 to In+X = AC-1B-1-B-1C-1. Subtract In from both sides of the equation to get X=AC-1B-1-B-1C-1-In. This is the solution for X, where A, B, and C are nan invertible matrices.
Given that A, B, and C are invertible nan matrices, we have to check if the equation C-1(A+X)B-1=In has a solution or not, and if there is a solution, we have to find X.
Let's solve it. Let's multiply both sides of the equation by B and C, respectively, we get C-1(A+X)B-1B = IB and C-1(A+X) = B. Now, we have to multiply both sides by C on the left, so we get C*C-1(A+X) = CB, which becomes A+X = CB.
Now we have to multiply both sides by B-1 on the right, so we get A + XBB-1 = CBB-1, which becomes A + XB-1 = CB-1.Now, we have to multiply both sides by C-1 on the left, so we get C-1A + C-1XB-1 = I.
Now, we have to multiply both sides by B and C, respectively, which results in C-1AC-1B + XC-1B = B. Finally, X = B(C-1AC-1B)B-1 - C-1B + I. We know that if A and B are matrices of the same order, then (AB)-1 = B-1A-1. By using this property, we can write the solution as X = B-1(A-1 + C-1)-1B-1 - C-1B + I. So, the solution exists for the given equation.
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Question 1 (1 point)
rCKDCJU8REiqxA77lV1wV2cHFZfr5tUaTGXFyevoxRboy_VmEz4R7wgZXpfqpY_aAOyvKWcTjBhUHdTxvo6W4sP9mOERugsKxruddHPqsR8t4LnexvVvVd_s6pJJJlrYJwHutIwNfwE
What is this an example of?
a
Points Line
b
Point
c
Line intersection
d
point plane
Answer:
definitely C
Step-by-step explanation:
because the fhitnesss grahm pacer test.....
can anyone please help me find the length of X?
Solution:
Note that:
2(Perimeter of smaller triangle) = Perimeter of larger triangleUsing the perimeter of the smaller triangle, solve for x.
2(Perimeter of smaller triangle) = Perimeter of larger triangle=> 2(3.5 + x + h) = 7 + 4 + 2h=> 7 + 2x + 2h = 7 + 4 + 2h=> 2x = 4=> x = 2The length of x is 2 units.
Is 9 a solution to
5w - 12 > 64
No
5w - 12 > 64
5w > 64+12
5w > 76
w > 15,2
So, the answer is w > 15,2
Hope I helped :)
someone please help I don't know how to do this. I will mark brainiest plz
Answer:
a=0.17, b=2/9, c=1/4
Step-by-step explanation:
Effectively, you're being asked to put the numbers 0.17, 1/4, and 2/9 in order, least to greatest.
One relatively easy way to do this is to write the fractions as decimal values. Your calculator can help, if you don't have these memorized.
1/4 = 0.25
2/9 = 0.22...(repeating)
So, least-to-greatest, the numbers are ...
0.17, 2/9, 1/4
Then a=0.17, b=2/9, c=1/4.
_____
As a check, you can compare b and c to 1/5, whose decimal equivalent is 0.20. Our solution says 0.17 < 1/5 < 2/9 < 1/4, which we now know to be true based on the decimal equivalents rounded to hundredths:
0.17 < 0.20 < 0.22 < 0.25
What is the distance between the points (6, -7) and (1, 5)?
Answer:
17
Step-by-step explanation:
I'm pretty sure that's right learned this last year. Good luck!
the sizes in degrees of the interior angles of a pentagon are consecutive even numbers what is the largest of these angles
The largest angle in the pentagon with consecutive even interior angle sizes is 112 degrees.
Let's assume the smallest interior angle of the pentagon is x degrees. Since the angles are consecutive even numbers, the other four angles can be expressed as x + 2, x + 4, x + 6, and x + 8 degrees.
The sum of the interior angles of a pentagon can be calculated using the formula: (n - 2) * 180 degrees, where n is the number of sides of the polygon. For a pentagon, the sum of the interior angles is (5 - 2) * 180 = 3 * 180 = 540 degrees.
Now, let's add up the five angles of the pentagon:
x + (x + 2) + (x + 4) + (x + 6) + (x + 8) = 540
Simplifying the equation:
5x + 20 = 540
5x = 540 - 20
5x = 520
x = 520 / 5
x = 104
So, the smallest interior angle, x, is 104 degrees. The largest interior angle is x + 8 = 104 + 8 = 112 degrees.
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Sklyer has made deposits of $680 at the end of every quarter
for 13 years. If interest is %5 compounded annually, how much will
have accumulated in 10 years after the last deposit?
The amount that will have accumulated in 10 years after the last deposit is approximately $13,299.25.
To calculate the accumulated amount, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = Accumulated amount
P = Principal amount (initial deposit)
r = Annual interest rate (as a decimal)
n = Number of times interest is compounded per year
t = Number of years
In this case, Sklyer has made deposits of $680 at the end of every quarter for 13 years, so the principal amount (P) is $680. The annual interest rate (r) is 5%, which is 0.05 as a decimal. The interest is compounded annually, so the number of times interest is compounded per year (n) is 1. And the number of years (t) for which we need to calculate the accumulated amount is 10.
Plugging these values into the formula, we have:
A = $680(1 + 0.05/1)^(1*10)
= $680(1 + 0.05)^10
= $680(1.05)^10
≈ $13,299.25
Therefore, the amount that will have accumulated in 10 years after the last deposit is approximately $13,299.25.
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please helpp!!!!!!!!!!
Answer:
5. Obtuse
6. Right
7. Acute
Step-by-step explanation:
5. 5,12,15
The square of the longest side is 15^2 = 225. The sum of the squares of the two shorter sides is 5^2 + 12^2 = 169. Since 169 < 225, the triangle is obtuse.
6. 6,8,10
The square of the longest side is 10^2 = 100. The sum of the squares of the two shorter sides is 6^2 + 8^2 = 100. Since 100 = 100, the triangle is right.
7. 12,10,13
The square of the longest side is 13^2 = 169. The sum of the squares of the two shorter sides is 12^2 + 10^2 = 244. Since 244 > 169, the triangle is acute.
Write the equation of the line that passes through the point (4,−1) that is parallel to the line 2x−3y=9
First we find the slope of the line 2x−3y+8=0 by placing it into slope intercept form:
2x−3y+8=0
⇒−3y=−2x−8
⇒3y=2x+8
⇒y=
3
2
x+
3
8
Therefore, the slope of the line is m=
3
2
.
Now since the equation of the line with slope m passing through a point (x
1
,y
1
) is
y−y
1
=m(x−x
1
)
Here the point is (2,3) and slope is m=
3
2
, therefore, the equation of the line is:
y−3=
3
2
(x−2)
⇒3(y−3)=2(x−2)
⇒3y−9=2x−4
⇒2x−3y=−9+4
⇒2x−3y=−5
Hence, the equation of the line is 2x−3y=−5.
Answer:
y=2/3x-11/3
Step-by-step explanation:
Hi there!
We are given the equation 2x-3y=9 and we want to write an equation that is parallel to it and that passes through (4,-1)
Parallel lines have the same slopes
So we need to first find the slope of 2x-3y=9
We can do this by converting the equation of the line from standard form (ax+by=c where a, b, and c are integers) to slope-intercept form (y=mx+b, where m is the slope and b is the y intercept)
To do this, we need to isolate y on one side
2x-3y=9
subtract 2x from both sides
-3y=-2x+9
divide both sides by -3
y=2/3x-3
as 2/3 is in the place where m is, 2/3 is the slope of the line
It's also the slope of the line parallel to it that passes through (4,-1).
Here's the equation of that line so far:
y=2/3x+b
now we need to find b
as the line will pass through the point (4,-1), we can 4 as x and -1 as y in order to solve for b
-1=2/3(4)+b
multiply
-1=8/3+b
subtract 8/3 to both sides
-11/3=b
Substitute -11/3 as b into the equation
y=2/3x-11/3
There's the equation
Hope this helps!
A forest fire leaves behind an area of grass burned in an expanding circular pattern. if the radius of the circle of burning forest can be modeled by the function r(t) = 2t+1,where t is time in minutes, build a function modeling the area burned asa function of time
To model the area burned as a function of time, we can use the formula for the area of a circle, which is A = πr^2. In this case, the radius of the circle is given by r(t) = 2t + 1, where t represents time in minutes.
To find the area burned at any given time, we substitute the expression for r(t) into the formula for the area:
A(t) = π(2t + 1)^2
Now, let's simplify this equation step by step:
1. Expand the square:
A(t) = π(4t^2 + 4t + 1)
2. Distribute π to each term inside the parentheses:
A(t) = 4πt^2 + 4πt + π
So, the function modeling the area burned as a function of time is A(t) = 4πt^2 + 4πt + π.
We are given the radius of the circle of burning forest as r(t) = 2t + 1, where t is the time in minutes. To find the area burned, we need to use the formula for the area of a circle, which is A = πr^2. By substituting the expression for r(t) into the formula, we get A(t) = π(2t + 1)^2. Simplifying further, we expand the square and distribute π to each term inside the parentheses, resulting in A(t) = 4πt^2 + 4πt + π.
The function A(t) = 4πt^2 + 4πt + π models the area burned as a function of time, where t represents the time in minutes.
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solve the following equation c/4 = 4
One of my cats, Apollo, drives a cat car. He used 6/8 of a tank of gas to visit his friends for the weekend, and another 1 half of a tank to commute to work the next week. He then took another weekend trip and used a 1/4 tank of gas. How many tanks of gas did Apollo use altogether? Tanks of gas
Answer:
Total gas used = 3/2 of a tank of gas
Step-by-step explanation:
Visit to friend = 6/8 of a tank of gas
Commute to work = 1/2 of a tank of gas
Weekend trip = 1/4 of a tank of gas
Total gas used = Visit to friend + Commute to work + Weekend trip
= 6/8 + 1/2 + 1/4
= 6+4+2/8
= 12/8
= 3/2
Total gas used = 3/2 of a tank of gas
A committee of size 5 is to be chosen from a group of 7 men and 8 women. The 5 names are to be chosen randomly "out of a hat".
(a) Describe the sample space for this situation and calculate the probability of selecting any given committee.
The number of ways to choose 5 people from a total of 15 people is given by 15C5. This can be calculated as follows:15C5 = (15!)/((15-5)! * 5!) = (15 * 14 * 13 * 12 * 11)/(5 * 4 * 3 * 2 * 1) = 3003Therefore, there are 3003 ways to select a committee of 5 people from the group of 15 people. The probability of selecting any given committee is 1/3003.
There are a total of 15 people in the group. A committee of size 5 is to be chosen from a group of 7 men and 8 women randomly. Therefore, the sample space for this situation is 15C5 ways to choose 5 people from a total of 15 people. 15C5 = 3003 ways. That means there are 3003 ways to select 5 people from the group of 15 people. The probability of selecting any given committee is 1/3003. That means the probability of selecting any one committee out of 3003 committees is 1/3003.To compute the probability of selecting any given committee, we first need to determine how many possible committees can be formed from the group of 15 people. The number of ways to choose 5 people from a total of 15 people is given by 15C5. This can be calculated as follows:15C5 = (15!)/((15-5)! * 5!) = (15 * 14 * 13 * 12 * 11)/(5 * 4 * 3 * 2 * 1) = 3003Therefore, there are 3003 ways to select a committee of 5 people from the group of 15 people. The probability of selecting any given committee is 1/3003.
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it’s about add and subtract so whats 1-3/8
Answer: -1/4
Step-by-step explanation:
1-3= -2
-2/8 simplifies to -1/4
Can you please answer it tysm
The work that Ryan did to find the greatest common factor of 48 and 72 is shown below.
Prime factorization of 48: 2 x 2 x 2 x 2 x 3
Prime factorization of 72: 2 x 2 x 2 x 3 x 3
The greatest common factor is 2 ´ 2 ´ 2 ´ 3 x 3
What is Ryan’s error?
Answer:
there will only be one 3
Step-by-step explanation:
see cause the first 3 of both numbers are 2 but only the last one of both numbers are 3 .
What is the scale factor used when going from the larger rectangle to the smaller one?.
Use the scaling factor equation: greater length over smaller length to go from a smaller to a larger figure. Use the formula scale factor = smaller length over larger length if you're scaling down from a larger to a smaller figure.
What is scale factor in math?
The ratio of one object's scale to that of a new object, which has its representation but is larger, is known as a scale factor (bigger or smaller). By multiplying each side by a certain number, say 2, we can increase the size of a rectangle with sides of 2 cm and 4 cm.How can I calculate the scale factor?
The scale factor is calculated using the following fundamental formula Scale factor = Dimension of the new shape Dimension of the old shape. The formula for calculating the scale factor is written as Scale factor = Larger figure dimensions Smaller figure dimensions in the event that the original figure is magnified.Learn more about scale factor
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The probability that a marksman will hit a target each time he shoots is 0. 89. If he fires 15 times, what is the probability that he hits the target at most 13 times?.
The likelihood that a shooter will hit the target at least 13 times is 27.92%.
Define the phrase "binomial distribution" please.The number of times the target is hit, X, has to be a random variable.The amount of trials ("n") equals 10 as a result of 15 bullets being fired.In such a binomial distribution, "p" symbolizes the probability of success and "q" represents the probability of failure (where q = p - 1)p = 0.89 with q = 0.11 as a result of the 0.89 chance of hitting the target.For such a binomial distribution, the probability density function equals the amount of successes ("x").
P(X = x) = ⁿCₓ . pˣ . qⁿ⁻ˣ
The required number of achievements is five (i.e., x = 13), as we are keen in the development that the objective will be hit exactly five times.
P(X = 13) = ¹⁵C₁₃. (0.89)¹³ (0.11)²
P(X = 13) = 0.2792
P(X = 13) = 27.92%
Therefore, there is a 27.92% chance that a shooter will hit the target at most 13 times.
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awnser these pls for a surprize
Answer:
(6) 300+40+8+0.17 or (3*100)+(4*10)+(8*1)+(17*0.01
(7) C.
(8) $31.10
(9) -$10.64 or he lost $10.64
(10) B.
Step-by-step explanation:
hope this helps :3
if it did pls mark brainliest
Compute the average value of \( f(x)=(x+6) e^{x / 3} \) on the interval \( [6,21] \). Average value \( = \)
Given the function f(x) as follows,\(\[f(x)=(x+6) e^{x / 3}\]\). To compute the average value of f(x) on the interval [6,21],
we make use of the formula for the average value of a function on a given interval. This formula is given by:
\(\[\frac{1}{b-a} \int_{a}^{b} f(x) d x\]\) where a and b represent the lower and upper limits of the interval respectively.
Therefore, the average value of f(x) on the interval [6,21] is given by:
\(\[\frac{1}{21-6} \int_{6}^{21} f(x) d x = \frac{1}{15} \int_{6}^{21} (x+6) e^{x / 3} d x\]\)
We can integrate this expression by using integration by parts. Let u = (x+6) and dv = ex/3dx.
du = dx and v = 3ex/3.
Substituting these values into the integration by parts formula, we have:
\(\[\int u d v=u v-\int v d u\]\)
Therefore,
\(\[\frac{1}{15} \int_{6}^{21} (x+6) e^{x / 3} d x = \frac{1}{15} \left[(x+6) 3 e^{x / 3} \bigg|_6^{21} - \int_{6}^{21} 3 e^{x / 3} d x \right]\]\[= \frac{1}{15} \left[27 e^{7} - 9 e^{2} - 9 e^{7} + 27 \right]\]\[= \frac{2}{5} (e^{7}-e^{2})\]\)
The average value of the function \(f(x)=(x+6)e^(x/3)\)on the interval [6,21] is \(\[\frac{2}{5} (e^{7}-e^{2})\]\). This is the value of the function that would produce the same area as the function over the interval [6,21].
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Alison bought 5 boxes of erasers,
Each box had 212 erasers. How
many erasers did she buy in all?
Answer:
1,060
Step-by-step explanation:
Each- Means multiplication.
You can add 212 - 5 times
212x5
Answer:
1060
Step-by-step explanation:
212 x 5 = 1060
212
x5
5x200=1000
5x10=50
5x2=10
1000+50+10=1060
10TH GRADE MATH: Central Angles 5 question pretest. 20 POINTS
The value of x is 17
The congruent arcs are (b) PQ and SR
The radius is 12 units
The value of PQ is 4
The length YZ is 19 units
How to calculate the value of xIn this question, we make use of the property of congruent sides
So, we have
3x - 24 = x + 10
When evaluated, we have
2x = 34
Divide by 2
x = 17
Identifying the congruent arcsBy the definition of congruent arcs, congruent arcs are arcs that have equal measures
In this figure, the congruent arcs are PQ and SR i.e. (b) PQ and SR
Calculating the radiusThe radius of the circle is calculated as
r² = (25 + r)² - 35²
When expanded, we have
r² = 625 + 50r + r² - 1225
So, we have
50r = 600
Divide both sides by 50
r = 12
How to calculate the value of PQIn this question, we make use of the property of congruent sides
So, we have
PQ = SR
Where
SR = 4
When evaluated, we have
PQ = 4
Calculating the length of YZThe length of YZ in the circle is calculated as
YZ² = (9 + 8)² + 8²
So, we have
YZ² = 17² + 8²
When expanded, we have
YZ² = 289 + 64
So, we have
YZ² = 353
Take the square root of both sides
YZ = 19
Hence, the length YZ is 19 units
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Find the annual growth rate of the quantity described below. A stock portfolio drops to one-tenth its former value over a 6-year period. Round your answer to two decimal places. The annual growth rate is i ________ %.
Answer:
-27.89%, the portfolio loses about 28% of its value every year on average.
Step-by-step explanation:
To find the annual growth rate of a quantity, we need to use the formula: Annual growth rate = (Ending value / Beginning value)^(1 / Number of years) - 1.In this case, the quantity is the value of a stock portfolio, which drops to one-tenth its former value over a 6-year period. This means that the ending value is 0.1 times the beginning value. The number of years is 6. Therefore, we can plug these values into the formula and get: Annual growth rate = (0.1 * Beginning value / Beginning value)^(1 / 6) - 1 = 0.1^(1 / 6) - 1 ≈ -0.2789To convert this decimal number into a percentage, we need to multiply it by 100 and add a percentage sign. This gives us: Annual growth rate = -0.2789 * 100% = -27.89%Therefore, the annual growth rate of the stock portfolio is -27.89%. This means that the portfolio loses about 28% of its value every year on average.The annual growth-rate is -52.90%
The annual growth rate can be calculated using the formula:
i = (1 - (final value / initial value)^(1/n)) x 100%
Where "final value" is the current value of the portfolio, "initial value" is the original value of the portfolio, "n" is the number of years, and "i" is the annual growth rate.
In this case, the portfolio drops to one-tenth of its former value, which means the final value is 1/10 or 0.1 times the initial value. The time period is 6 years. So we have:
i = (1 - (0.1)^(1/6)) x 100%
i = (1 - 0.471) x 100%
i = 52.9%
Therefore, the annual growth rate is -52.9% (since the portfolio has decreased in value). Rounded to two decimal places, the answer is -52.90%.
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Tim owes his mother $23. What possible combination of jobs
could Tim perform to earn enough money to pay back his mother?
Write an addition equation using integers to represent the
situation. Will he have money left over?
Answer:McDonald’s
Step-by-step explanation:because they pay very low and u should have -3 -5 -10
HELP!!!!!!!!!!!! ITS FOR A FRIEND
The population in Smalltown in 2010 was 30,500 people and is growing exponentially at a rate of 3 percent. Write an equation that defines the population t years after 2010?
What is the area of a rectangle if the length is (3x -5) inches and the width is (4x + 1) inches? What is the area of x=7?
Answer:
the area of rectangle is 12x²+17x-5
Your company requires its employees to work between 10 a.m. and 3 p.m. each day, but employees can decide whether they will work their additional hours before or after this time period. What is this arrangement called in your textbook
In the textbook, this arrangement is referred to as "flextime" or "flexible working hours."
Flextime is a work arrangement that allows employees to have control over their work schedule within certain core hours. In this case, the core hours are between 10 a.m. and 3 p.m., during which all employees are required to be present at work. However, employees have the flexibility to choose their additional working hours either before or after the core hours.
Flextime offers employees the freedom to adjust their work schedule to accommodate personal obligations, preferences, or other commitments outside of work. It recognizes that individuals have different peak productivity hours and work-life balance needs. By allowing employees to choose their additional working hours, it promotes autonomy and can contribute to increased job satisfaction and work-life integration.
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The function y = - 4x + 14 gives the number y of avocados you have left after making x batches of
guacamole.
A) Identify the independent and dependent variables.
B) The domain is 0, 1, 2, and 3. What is the range?
C) Is the domain discrete or continuous? Explain
Answer:
See below
Step-by-step explanation:
A. x is independent and y is dependent
B The range is 14, 10, 6, and 2
D The domain is discrete because it only includes whole avocados, and not fractional pieces.
A) Number y of avocados you have left is the dependent variable and x, number of batches of guacamole is the independent variable. B) Range is {2, 6, 10, 14}. C) Domain is discrete.
What is Function?A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.
Here set A is the Domain and the set of images of A is the Range.
The given function is y = -4x + 14.
A) The variable y is depending on the value of the variable x.
So y, which represents the number of avocados left is the dependent variable and x, which represents the number of batches of guacamole made is the independent variable.
B) The domain is 0, 1, 2 and 3.
That is, the values of x are 0, 1, 2 and 3.
Values of y are :
x = 0, then y = 14
x = 1, then y = -4 + 14 = 10
x = 2, then y = -8 + 14 = 6
x = 3, then y = -12 + 14 = 2
Range is 2, 6, 10 and 14.
C) Domain of the function is discrete since it contains only certain values in the interval that is, 0, 1, 2, and 3.
Continuous domain has set of input values which consists of all the numbers in an interval.
Hence the independent variable is x and dependent variable is y. Range of the given function is the set {2, 6, 10, 14}. and the domain of the function is discrete.
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Joe walks to his school from his home in 37 minutes .if his school is 3kn away calculate. the speed in meters per second
Step-by-step explanation:
speed= distance/time
37 mn=2220 sec
3 km=3000 m
ans=3000m/2220sec