Answer:
(f-g)(x) = x² - 3x - 24Step-by-step explanation:
f(x) = x² - 2x - 24
g(x) = x + 4
To find (f-g)(x) subtract g(x) from f(x)
That's
(f-g)(x) = x² - 2x - 24 - ( x + 4)
(f-g)(x) = x² - 2x - 24 - x - 4
Group like terms
We have
(f-g)(x) = x² - 2x - x - 24 - 4
Simplify
We have the final answer as
(f-g)(x) = x² - 3x - 28Hope this helps you
5. Determine the value of t4 in an arithmetic sequence given that t₁ = 11 and S9 = 243.
The value of t₄ in the arithmetic sequence is 103/8.To determine the value of t₄ in an arithmetic sequence, we need to use the given information that t₁ = 11 (the first term of the sequence) and S₉ = 243 (the sum of the first 9 terms of the sequence).
We know that the formula for the sum of an arithmetic sequence is Sₙ = (n/2)(2a + (n-1)d), where Sₙ is the sum, a is the first term, n is the number of terms, and d is the common difference.
From the given information, we have S₉ = 243, a = 11, and n = 9. Plugging these values into the sum formula, we can solve for d:
243 = (9/2)(2(11) + (9-1)d)
243 = 9(22 + 8d)
243 = 198 + 72d
45 = 72d
d = 45/72 = 5/8
Now that we have the common difference, we can find t₄ using the formula for the nth term of an arithmetic sequence:
tₙ = a + (n-1)d
t₄ = 11 + (4-1)(5/8)
t₄ = 11 + 3(5/8)
t₄ = 11 + 15/8
t₄ = 88/8 + 15/8
t₄ = 103/8
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As a summer job, Bart is picking strawberries at his uncle's farm. He can pick 6
gallons of strawberries in 9 minutes, and his uncles pays him $5 for 2 bushels. How
much does Bart make per hour picking strawberries?
Given: 8 gallons = 1 bushel & 60 minutes = 1 hour
Answer:
125
Step-by-step explanation:
All the work is in picture attat
Which is greater -3.7 or -3 2/5
Answer:
-3 2/4 is greater that -3.7
Step-by-step explanation:
2/4 is 0.4 and when dealing with negatives so the lower negative is the closest to 0 so the smaller negative is the greatest.
NEED THE ANSWERS FAST PLEASE
In Exercises 13 and 14, find a possible pair of integer values for a and c so that
the quadratic equation has the given number and type of solution(s). Then write
the equation.
13. ax² − 3x + c = 0; two real solutions
-
14. ax² + 10x + c = 0; two imaginary solutions
15. Determine the number and type of solutions to the equation 2x² - 8x = -15.
A. two real solutions
B. one real solution
C. two imaginary solutions
D. one imaginary solution
In Exercises 16 and 17, use the Quadratic Formula to write a quadratic equation
that has the given solutions.
16. x
10 ± √√-68
14
17. x =
-3±i√√7
8
In Exercises 18-21, solve the quadratic equation using the Quadratic Formula.
Then solve the equation using another method. Which method do you prefer?
Explain.
18. 7x² + 7 = 14x
20. x² + 2 = -x
19. x² + 20x = 8
21. 8x² - 48x + 64 = 0
22. The quadratic equation x² + x + c = 0 has two imaginary solutions. Show that
the constant c must be greater than 1.
Answer:
Step-by-step explanation:
the degree of a polynomial determines 1:1 the number of solutions.
a quadratic equation (degree 2) has 2 solutions.
the general solution is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
a = -4
b = -4
c = -1
so,
x = (4 ± sqrt((-4)² - 4×-4×-1))/(2×-4)
when we look at the square root
16 - 16
we see that it is 0.
the square root of 0 is 0, and there is no difference between -0 and +0.
so, we get only one (real) solution : 4/-8 = -1/2
but : formally, there are still 2 solutions (as this is a quadratic equation). they are just identical.
so, I am not sure what your teacher wants to see in this case as answer.
my answer would be 2 real identical solutions. did this help?
Quadratic applications??
Answer:
Step-by-step explanation:
2 l + 2w = 34 ⇔ l + w = 17 ⇒ l = 17 - w ..... (1)
l w = 66 ..... (2)
(1) ----> (2)
(17 - w) w = 66
w² - 17w + 66 = 0 ⇔ (w - 6)(w - 11) = 0
w = 6 cm
l = 11 cm
If the parent function f(x) = |x| is transformed to g(x) = |x| + 4, what transformation occurs from f(x) to g(x)?
a. The graph of f(x) is shifted upward to create g(x).
b. The graph of f(x) is shifted downward to create g(x).
c. The graph of f(x) is shifted to the right to create g(x).
d. The graph of f(x) is shifted to the left to create g(x).
Answer: A is your answer
Step-by-step explanation:
The transformation that occurs from f(x) to g(x) is that the graph of f(x) is shifted upward to create g(x).
Option A is the correct answer.
We have,
Parent function f(x) = |x|
Transformed function g(x) = |x| + 4
In the transformation from f(x) = |x| to g(x) = |x| + 4, a vertical shift occurs.
Adding a positive value (4 in this case) to the absolute value function f(x) results in the entire graph being shifted upward by 4 units.
A vertical shift on a graph refers to the transformation of a function in which the entire graph is moved up or down without changing its shape or orientation.
This vertical displacement occurs by adding or subtracting a constant value to the function's output (y-coordinate) for all input (x) values.
Thus,
a. The graph of f(x) is shifted upward to create g(x).
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PLEASE HELP PLEASE HELP
Answer:
Acute angle
Step-by-step explanation:
Acute angle = less than 90 degrees
Answer:
acute angles
Step-by-step explanation:
Angles between 0 and 90 degrees (0°< θ <90°) are called acute angles. Angles between 90 and 180 degrees (90°< θ <180°) are known as obtuse angles. Angles that are 90 degrees (θ = 90°) are right angles.
Dough has 5 hours to make an on time delivery 273 mile# away. Dough drives at a constant speed of 55 miles per hour. Will Doug make the delivery by the deadline. Explain
Answer:
Yes, He'll make it
Step-by-step explanation:
If Doug travels at 55 MPH for 5 hours, he will have driven 275 miles. Since the deadline and his current speed allow him to drive farther than his set location at 273 miles, then Doug should be able to make it within the time given.
What is the solution to this equation? 4x+x-15+3-8x=13
Answer:
x = -25/3
Step-by-step explanation:
The equation simplifies to -3x - 25 = 0, so
-3x = 25 =>
x = -25/3
Anna's favorite pool toys are the beach balls. If the radius of one of the beach balls
is 6 inches, to the nearest whole number, what is the volume of the beach ball?
Leave your answer in terms of a.
Inches Cubed
Answer:
288
Step-by-step explanation:
please review the attachment for step by step soluation
At a local college, 82 of the male students are smokers and 328 are non-smokers. Of the female students, 148 are smokers and 252 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are smokers?
Find c.
Round to the nearest tenth:
Answer:
Step-by-step explanation:
2/Sin(105) = c / sin(15)
2 * sin(15) = c * sin(105) Divide by Sin(105)
2 * sin(15)/Sin(105) = c
2 * 0.2679 = c
c = 0.539
c = 0.5
whats is 2+2?
im confused pls explain
How do I write equations for the piecewise function? For C.
Ok, so
Here we have the following piecewise function.
First, notice that the yellow function is a function which comes from some changes to the function:
\(y=\sqrt[]{x}\)If we modify the previous function to get the yellow one, we obtain that the yellow function will be:
\(y=-3\sqrt[]{-x-4}-1\)Notice that this function will exist if
\(x\leq-4\)Now, let's see the blue function. As you can see, it has the form of an absolute value function.
Now, our blue function is a function which comes from some changes to the function:
\(y=\lvert x\rvert\)If we modify the previous function to get the blue one, we obtain that the blue function will be:
\(y=\lvert\frac{3}{2}x+3\lvert-1\)Notice that the function exists if:
\(-4Now and finally, the green function has the form of a translated cubic root.Our green function is a function which comes from some changes to the function:
\(y=\sqrt[3]{x}\)If we modify the previous function to get the green one, we obtain that the green function will be:
\(y=2\sqrt[3]{x-6}+4\)As this is a piecewise function, we could write the solution as:
\(f(x)=\begin{cases}-3\sqrt[]{-x-4}-1\text{ if }x\leq-4 \\ y=\lvert\frac{3}{2}x+3\lvert-1\text{ if }4What is another way to look at the circumference of a circle?
a. perimeter
C. diameter
b. area
d. radius
Please select the best answer from the choices provided
Answer:
d radias
Step-by-step explanation:
The another way to look at the circumference of a circle is the perimeter of the circle. Option A is correct.
What is the circumference of the circle?The circumference of the circle is the length of its boundary. It can found out using the following formula,
\(P=2\pi r\)
Here, (r) is the radius of the circle.
The overall length of the straight sided figure is called its perimeter.The overall length of the circle boundary which is curved is called the circumference.Thus, the another way to look at the circumference of a circle is the perimeter of the circle. Option A is correct.
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Harrison has 40 CDs in his music collection if 40% of the CDs are country music and 50% are pop music, how many CDs are other types of music?
Answer:
4
Step-by-step explanation:
40% of 40= 16
59% of 49= 20
16+20=36
40-36=4
How many 11-card hands are possible with a 20-card deck?
There is only 1 possible 11-card hand that can be formed from a 20-card deck.
To determine the number of 11-card hands possible with a 20-card deck, we can use the concept of combinations.
The number of combinations, denoted as "nCk," represents the number of ways to choose k items from a set of n items without regard to the order. In this case, we want to find the number of 11-card hands from a 20-card deck.
The formula for combinations is:
nCk = n! / (k!(n-k)!)
Where "!" denotes the factorial of a number.
Substituting the values into the formula:
20C11 = 20! / (11!(20-11)!)
Simplifying further:
20C11 = 20! / (11! * 9!)
Now, let's calculate the factorial values:
20! = 20 * 19 * 18 * ... * 2 * 1
11! = 11 * 10 * 9 * ... * 2 * 1
9! = 9 * 8 * 7 * ... * 2 * 1
By canceling out common terms in the numerator and denominator, we get:
20C11 = (20 * 19 * 18 * ... * 12) / (11 * 10 * 9 * ... * 2 * 1)
Performing the multiplication:
20C11 = 39,916,800 / 39,916,800
Finally, the result simplifies to:
20C11 = 1
Consequently, with a 20-card deck, there is only one potential 11-card hand.
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-5 = -36 / m + m
pls help me with this question hurry
This is 6 grade work
The solution of the given quadratic equation -5 = -36 / m + m is,
m = - 9 or m = 4
The given equation is
-5 = -36 / m + m
After re arranging it we get,
m² + 5m - 36 = 0
This is nothing but quadratic equation,
Since we know that,
The definition of a quadratic as a second-degree polynomial equation demands that at least one squared term must be included. It also goes by the name quadratic equations. The quadratic equation has the following generic form:
ax² + bx + c = 0
So now we can write,
⇒ m² + 9m - 4m - 36 = 0
⇒ m(m + 9) - 4(m + 9) = 0
⇒ (m + 9)(m - 4) = 0
Therefore,
⇒ (m + 9) = 0 or (m - 4) = 0
⇒ m = - 9 or m = 4
Thus,
The solution of the given expression is
m = - 9 or m = 4
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6. A Two-story building measures 21 root
from the ground. A scale model shows the
building to be 3 inches fall. How many inches
would an 84 foot bullding be in the model?
Answer:
1008 in
Step-by-step explanation:
84x12=1008
84 feet times 12 inches because 12 inches is a foot.
so 84 feet times 12 inches gets your answer. 84 times 12=1008
make sense?
Answer:
12 inches
Step-by-step explanation:So, we are going to let "x" be the height inches (in the model) of a 84 foot building.
According to the information that was given we know that the height of a two-story building is 21 feet and in the scale model its height is 3 inches.Knowing this, we can set up the following proportion:
3/21 = x/84
The final step is to solve for "x" in order to calculate its value. We get that this is: 3/21 =x/84
(84) (3/21) = x
So , an 84 foot building will be 12 inches tall in the model.
(when I do the "3/21 it doesn't mean divide it's a fraction"
For two n by n square matricies A and B,
suppose rankA = rankB = n-1.
Can rank(AB) become less than n-1 ?
(e.g. rank (AB) = n-2)
If so, I humbly ask you for an example.
Thank you very much.
No, the rank of the product of two n by n square matrices A and B, denoted as AB, cannot be less than n-1 if both A and B have ranks of n-1.
According to the Rank-Nullity theorem, for any matrix M, the sum of its rank and nullity is equal to the number of columns in M. In this case, the number of columns in AB is n, so the sum of the rank and nullity of AB must be n.
If rank(A) = rank(B) = n-1, it means that both A and B have nullity 1. The nullity of a matrix is the dimension of its null space, which consists of all vectors that get mapped to the zero vector when multiplied by the matrix. Since both A and B have rank n-1, their null spaces consist only of the zero vector.
Now, considering AB, if the rank of AB were less than n-1, it would mean that the nullity of AB is greater than 1.
However, this would violate the Rank-Nullity theorem since the sum of the rank and nullity of AB must be n, which is the number of columns.
Therefore, if rank(A) = rank(B) = n-1, the rank of AB cannot be less than n-1.
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Harriet wants to buy items worth $248.50. She is using a store coupon for 25 percent off her purchases. She has to pay 5 percent sales tax. Calculate the total cost of the items
Answer:$195.70
Step-by-step explanation:
Starting price is : $248.50
Price with 25% off :
$248.50 x ( 1 - 0.25 ) = $248.50 x 0.75 = $186.375
After that she has to pay 5 % sales tax:
$186.375 x 1.05 = $195.70
Answer:
The total cost of the items is $195.70.
What are the dimensions of a rectangle with an area of 48 square centimeters and a perimeter of 28 centimeters?
Step-by-step explanation:
the area of a rectangle is
length × width
the perimeter of a rectangle is
2×length + 2×width
so,
length×width = 48 cm²
2×length + 2×width = 28 cm
length + width = 14 cm
length = 14 - width
we use this in the first equation :
(14 - width) × width = 48
14×width - width² = 48
-width² + 14×width - 48 = 0
a quadratic equation
ax² + bx + c = 0
has the general solution
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
x = width
a = -1
b = 14
c = -48
width = (-14 ± sqrt(14² - 4×-1×-48))/(2×-1) =
= (-14 ± sqrt(196 - 192))/-2 =
= (-14 ± sqrt(4))/-2 =
= (-14 ± 2)/-2 =
= 7 ± 1
width1 = 7 + 1 = 8 cm
width2 = 7 - 1 = 6 cm
length1 = 14 - width1 = 14 - 8 = 6 cm
length2 = 14 - width2 = 14 - 6 = 8 cm
so, we see, one of them must be 8 cm, and the other 6 cm.
let's length be the longer side, so
length = 8 cm
width = 6 cm
Adrianna has $20 in her savings account. Each week she will add $5 to it. Which equation represents this situation?
Answer:
Let y = the amount in Adrianna's savings account
Let x = the number of weeks passed
y = 5x + 20
A rectangle has a length six inches less than its width. If the perimiter of the rectangle is 54 inches, find the dimensions
Answer:
l=10.5 in , w=16.5 in
Step-by-step explanation:
p=2l+2w
54=2(w-6)+2(w)
54=2w-12+2w
54=4w-12
66=4w
w= 16.5
l=w-6
l=16.5-6
l=10.5 in
w=16.5 in
hope this helps
\(\frac{x+4}{3} =7\)
\(\dfrac{x+4}{3} =7\)
Multiply both sides by 3:
\((\dfrac{x+4}{3} )\times3=(7)\times3\)
\(x+4=21\)
Subtract 4 from both sides:
\(x+4-4=21-4\)
\(\boxed{x=17}\)
(ECONOMICS- sorry there’s no button for it )
What motivates producers and consumers in the black market
The motivations for producers and consumers in the black market are largely driven by financial incentives and a desire to avoid legal consequences.
The black market refers to the illegal trade of goods and services that are not permitted by law, such as drugs, counterfeit items, and stolen goods. Producers and consumers in the black market are motivated by a variety of factors, including:
High profits, Producers in the black market can earn higher profits than they would in legal markets due to the lack of regulation and taxes.
Escaping legal consequences: Producers and consumers may participate in the black market to avoid legal consequences, such as fines or imprisonment, for engaging in illegal activities.
Limited availability, Some goods and services are only available on the black market due to legal restrictions or limited supply.
Low prices, Consumers in the black market can often purchase goods and services at lower prices than in legal markets due to the lack of taxes and regulations.
Desire for anonymity, The black market can provide anonymity for both producers and consumers, allowing them to engage in illegal activities without fear of detection or retribution.
However, participating in the black market also comes with significant risks, including the possibility of arrest, fines, and even violence.
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a system of linear equations in two variables can have only a unique solution.explain
Step-by-step explanation:
Because straight lines (that are not the 'same line') can have at most, only one point of intersection...the unique solution.
Answer:
no it not have a unique solution.
A segment with endpoints at $A(2, -2)$ and $B(14, 4)$ is extended through $B$ to point $C$. If $BC = \frac{1}{3} \cdot AB$, what are the coordinates for point $C$? Express your answer as an ordered pair.
Answer:
C = (18, 6)
Step-by-step explanation:
You have ...
AB : BC = 1 : 1/3 = 3 : 1
(B -A) / (C -B) = 3/1 . . . . . another way to write the distance relation
B -A = 3(C -B) . . . . . . . . . multiply by (C-B)
4B -A = 3C . . . . . . . . . . . add 3B
C = (4B -A)/3 . . . . . . . . . divide by 3 to get an expression for C
C = (4(14, 4) -(2, -2))/3 = (54, 18)/3
C = (18, 6)
EASY POINTS!
Winter has just begun. After one week, the temperature decreased by 46.8° with a
percent change of 72%. What was the temperature at the beginning of the week and
what is the temperature now?
Answer:Can somebody also help me with this. i'm confused please hurry!
Step-by-step explanation:
answer the number 2 only
The missing variables on item 2 are given as follows:
\(o = 12\sqrt{3}\)i = 24.What are the trigonometric ratios?The three trigonometric ratios are the sine, the cosine and the tangent of an angle, and they are obtained according to the formulas presented as follows:
Sine = length of opposite side to the angle/length of hypotenuse of the triangle.Cosine = length of adjacent side to the angle/length of hypotenuse of the triangle.Tangent = length of opposite side to the angle/length of adjacent side to the angle = sine/cosine.For the angle of 60º, we have that:
o is the opposite side.12 is the adjacent side.Hence the length o is given as follows:
tan(60º) = o/12.
\(\sqrt{3} = \frac{o}{12}\)
\(o = 12\sqrt{3}\)
Applying the Pythagorean Theorem, the length i is given as follows:
i² = 12² + \((12\sqrt{3})^2\)
i² = 576
i² = 24²
i = 24.
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Answer:
o = 12√3
i = 24
Step-by-step explanation:
From observation of the given right triangle, we can see that two of its interior angles measure 60° and 90°. As the interior angles of a triangle sum to 180°, this means that the remaining interior angle must be 30°, since 30° + 60° + 90° = 180°. Therefore, the triangle is a special 30-60-90 triangle.
The side lengths in a 30-60-90 triangle have a special relationship, which can be represented by the ratio formula a : a√3 : 2a, where "a" represents a scaling factor that can be any positive real number.
Side a is opposite the 30° angle (shortest leg).Side a√3 is opposite the 60° angle (longest leg).Side 2a is the hypotenuse (longest side).In triangle #2, the shortest leg is 12 units.
As "a" is the shortest leg, the scale factor "a" is 12.
The side labelled "o" is the longest leg opposite the 60° angle. Therefore:
\(o = a\sqrt{3}=12\sqrt{3}\)
The side labelled "i" is the hypotenuse of the triangle. Therefore:
\(i= 2a = 2 \cdot 12=24\)
Therefore:
o = 12√3i = 24