Sandy has 16 roses, 8 daisies, and 32 tulips. She wants to arrange all the flowers in the bouquets. Each boquet has the same number of flowers and the same type of flower. What is the greatest number of flowers that could be in a bouquet?
Given that f(x) = 1-x x . What is the domain of f-1(x)? A) R B) R, x ≠ 0 C) R, x ≠ 1 D) R, x ≠ -1
Answer:
The required domain is [tex]x\ne -1[/tex]
Step-by-step explanation:
The given function is
[tex]f(x)=\frac{1-x}{x}[/tex]
We need the inverse of this function.
We first of all have to let [tex]y=f(x)[/tex].
This implies that,
[tex]y=\frac{1-x}{x}[/tex]
Next, we interchange [tex]x[/tex] and [tex]y[/tex] to obtain,
[tex]x=\frac{1-y}{y}[/tex]
We make y the subject to get,
[tex]xy=1-y[/tex]
[tex]xy+y=1[/tex]
[tex](x+1)y=1[/tex]
[tex]y=\frac{1}{1+x}[/tex]
The inverse function is
[tex]f^{-1}(x)=\frac{1}{1+x}[/tex]
The domain of this function is
[tex]x+1\ne 0[/tex]
[tex]\Rightarrow x\ne -1[/tex]
The correct answer is D
Find the coordinates of the midpoint of the segment whose endpoints are H(5, 13) and K(7, 5). (12, 18) (9, 7) (2, 8) (6, 9)
Answer: D. (6, 9)
Step-by-step explanation:
Midpoint is the "average" of the x's and y's:
Given: (5, 13) and (7, 5)
Midpoint: [tex](\dfrac{5+7}{2},\dfrac{13+5}{2})[/tex]
= [tex](\dfrac{12}{2},\dfrac{18}{2})[/tex]
= (6, 9)
Answer: (6, 9)
Step-by-step explanation:
Carlos can type 228 words in 4 minutes. Which equation represents the number of words Carlos types per minute?
Answer:
see explanation
Step-by-step explanation:
For words per minute divide 228 by 4
words per minute = [tex]\frac{228}{4}[/tex] ( = 57 )
Final answer:
To find the number of words Carlos types per minute, set up an equation and solve for 'x'.
Explanation:
To find the number of words Carlos types per minute, we can set up an equation using the given information. Let's assume that the number of words Carlos types in 1 minute is 'x.' We know that Carlos can type 228 words in 4 minutes. So, the equation would be:
228 words in 4 minutes = x words in 1 minute
To solve this equation, we can cross-multiply and divide:
(228 words) x (1 minute) = (4 minutes) x (x words)
Simplifying further:
x = (228 words) / (4 minutes)
Therefore, the equation that represents the number of words Carlos types per minute is:
x = 228 / 4
A farmer uses two types of fertilizers. A 50-lb bag of Fertilizer A contains 8 lb of nitrogen, 2 lb of phosphorus, and 4 lb of potassium. A 50-lb bag of Fertilizer B contains 5 lb each of nitrogen, phosphorus, and potassium. The minimum requirements for a field are 440 lb of nitrogen, 260 lb of phosphorus, and 360 lb of potassium. If a 50-lb bag of Fertilizer A costs $30 and a 50-lb bag of Fertilizer B costs $20, find the amount of each type of fertilizer the farmer should use to minimize his cost while still meeting the minimum requirements.
Answer: Fertilizer A = 20, Fertilizer B = 56
Step-by-step explanation:
Step 1: Set up the equations
[tex]\begin{array}{c|c|c|c}& FertilizerA&FertilizerB&Quantity Required\\Nitrogen&8&5&440\\Phosphorous&2&5&260\\Potassium&4&5&360\\\end{array}[/tex]
Nitrogen: 8x + 5y ≥ 440
Phosphorous: 2x + 5y ≥ 260
Potassium: 4x + 5y ≥ 360
Step 2: Find the vertices
It is easiest to graph the equations to find the vertices. (see attachment). You can also solve each system of equations to find the intersected points.
The following satisfy the "greater than or equal to" requirement:
(0, 88) → y-intercept of Nitrogen equation(20, 56) → intersection of Nitrogen and Potassium equations(50, 32) → intersection of Phosphorous and Potassium(130, 0) → x-intercept of PotassiumStep 3: Use vertices in cost function C(x) to find the minimum
C(x) = $30x + $20y
(0, 88): $30(0) + $20(88) = $1760
(20, 56): $30(20) + $20(56) = $1720 ← This is the minimum!
(50, 32): $30(50) + $20(32) = $2140
(130, 0): $30(130) + $20(0) = $3900
The minimum cost occurs when 20 bags of Fertilizer A and 56 bags of Fertilizer B are purchased.
This is a linear programming problem. The farmer needs to solve the system of inequalities that define the minimum nutrient requirements for the field and the cost function of the fertilizers to determine the least expensive way to meet the nutrient requirements.
Explanation:The subject of this problem lies in the realm of linear programming—a mathematical method for determining a way to achieve the best outcome in a given mathematical model.
To solve this problem, we need to find the quantities of Fertilizer A and Fertilizer B that meets the minimum requirements for the field at minimum cost. Let x be the quantity of Fertilizer A and y be the quantity of Fertilizer B. Then, based on the information provided in the problem, we can set up the following inequalities:
Nitrogen: 8x + 5y ≥ 440Phosphorus: 2x + 5y ≥ 260Potassium: 4x + 5y ≥ 360Given that a 50-lb bag of Fertilizer A costs $30 and a 50-lb bag of Fertilizer B costs $20, the total cost of the fertilizers can be represented by the equation C = 30x + 20y, where C is the total cost.
The goal is to minimize the cost C = 30x + 20y, subject to the constraints above.
Using graphing or mathematical software, we can construct a graph of these inequalities and find the solution that lies on the feasible region where the cost is minimized.
The farmer needs to solve this system to determine the least amount of each fertilizer to use while still meeting the minimum soil nutrient requirements.
Learn more about Linear Programming here:https://brainly.com/question/34674455
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please help ill give brainliest
Answer: Second, third, fifth and sixth options are correct.
Step-by-step explanation:
Since we have given that
[tex]\frac{3}{4}+m=\frac{-7}{4}[/tex]
Now, we will solve it for the value of m :
[tex]\frac{3}{4}+m=\frac{-7}{4}\\\\m=\frac{-7}{4}-\frac{3}{4}\\\\m=\frac{-7-3}{4}\\\\m=\frac{-10}{4}[/tex]
Hence, the value of m is
[tex]\frac{-10}{4}[/tex]
and we can also apply m=[tex]\frac{-5}{2}[/tex]
if [tex]\frac{-5}{4}+m=\frac{-15}{4}\\\\m=\frac{-15}{4}+\frac{5}{4}\\\\m=\frac{-10}{4}\\\\m=\frac{-5}{2}[/tex]
And
[tex]m+2=-0.5\\\\m=-0.5-2\\\\m=-2.5\\\\m=\frac{-5}{2}[/tex]
Therefore, Second, third, fifth and sixth options are correct.
PLEASE SHOW ALL STEPS!!!!
find the center and radius of the circle.
x2 −2x + y2 − 6y = 26
Answer:
Center (1,3) and radius 6
Step-by-step explanation:
We must complete the square to find the center and radius of the circle.
First make sure the x and y squared terms have 1 as their coefficients. We also make sure x and y terms together.
[tex]x^2-2x+y^2-6y=26[/tex]
We now create space between the x and y terms with parenthesis.
[tex](x^2-2x)+(y^2-6y)=26[/tex]
We complete the square by taking the middle terms -2x and the -6y - divide each and square them.
[tex]\frac{-2}{2} =(-1)^{2} =1[/tex]
[tex]\frac{-6}{2} =(-3)^{2} =9[/tex]
We add the squares to both sides.
[tex](x^2-2x+1)+(y^2-6y+9)=26+1+9[/tex]
Simplify.
[tex](x^2-2x+1)+(y^2-6y+9)=36[/tex]
And write the quadratics in factored form.
[tex](x-1)^{2} +(y-3)^{2} =36[/tex]
The center is (h,k) or (1,3). The radius is the square root of 36 which is 6.
you and a friend are starting a computer repair business. you estimate that your expenses are $500 per week
Final answer:
To set up a profitable computer repair business, assuming $50 for parts per repair and a service fee of $150, the weekly expenses equation is y = 50x + 500, and income equation is y = 150x, where x is the number of repairs.
Explanation:
When starting a computer repair business with estimated expenses of $500 per week, it's crucial to set average costs for replacement parts and fees for services to ensure profitability. Let's assume an average cost of $50 for parts per computer repaired and a service fee of $150 per repair. If x represents the number of computers you repair each week, your total weekly expenses for parts would be 50x plus the fixed expenses of $500, resulting in a total expense equation of y = 50x + 500. Your total weekly income can be modeled by the equation y = 150x, with each repair contributing $150 to the income.
To break even or make a profit, the total income must exceed total expenses, leading to an analysis based on the number of repairs done weekly. This practical application of linear equations in a business setting helps in budgeting, pricing strategies, and understanding economic principles behind running a service-based business. Monitoring these variables is key to achieving sustainability.
Select the true statement plzzzz need help ASAPPPPP
Answer:
Correct choice is B
Step-by-step explanation:
All three functions are increasing when x is increasing. You can find values of each function when x is "enough large". For example, at x=100,
1. linear function: [tex]y=10\cdot 100=1,000.[/tex]
2. exponential function: [tex]y=5^{100}\approx 0.8\cdot 10^{70}.[/tex]
3. quadratic function: [tex]y=4\cdot 100^2+5\cdot 100=40,500.[/tex]
As you can see, when x approaches positive infinity, the exponential function will exceed both the linear and the quadratic functions.
Also you can use graphical method to get from the attached diagrams result. When x approaches positive infinity, the exponential function will exceed both the linear and the quadratic functions.
Correct choice is B.
Write a function rule for the data in the table. Determine if it's a direct variation, inverse variation or neither. Last, determine the value of x if y=10.
I'm assuming you meant to say "graph" instead of "table".
The function rule is y = x+2 because the y intercept is 2, where the graph crosses the y axis. The slope is 1 meaning we move 1 unit up and 1 unit to the right each time. You can use the slope formula to determine the slope, or simply make this observation of rise vs run.
-------------------------------
Because this line doesn't go through the origin, and because it's not in the form y = k*x, this means we do not have a direct variation equation.
We do not have an inverse variation equation either because it is not in the form y = k/x or x*y = k. A visual indication of this is that the graph isn't a curved hyperbola.
Therefore, this function is neither direct variation nor inverse variation
-------------------------------
Plug in y = 10 and solve for x
y = x+2
x+2 = y
x+2 = 10
x+2-2 = 10-2
x = 8
The value of x is 8
So if x = 8, then y = 10 meaning that (x,y) = (8,10) is on this blue diagonal line.
Davila can job 2000 feet in 4 mins. If she jobs at the same, rate how many feet can she job in 8 mins?
Answer:
4000
Step-by-step explanation:
Davila can job 400 feet in 8 min
What is the approximate solution to the equation 3t=29 ? 0.3263 3.0650 3.3672 9.6667
ASAP
Answer:
9.6667
Step-by-step explanation:
3t=29
Divide each side by 3
3t/3 = 29/3
t = 29/3
Three goes into 29 nine times (3*9 = 27 ) with 2 left over
t = 9 2/3
We know 1/3 = .3 repeating
so 2/3 = .6 repeating
t = 9 .6 repeating
Answer: 3.0650
Step-by-step explanation:
K-12
Adelia had 4 dollars. She found 50 cents and then bought a snack. She ended up with 6 quarters. Which expression equals the number of dollars Adelia spent on the snack?
Answer:
3 Dollars
Step-by-step explanation:
$4+.50cents=4.50
6 quarters is $1.50
4.50-1.50=3 dollars
So, I got this question for my Imagine Math, and here is what I got;
4+0.50−1.50.
Why; I got this because 4+0.50 is 4.50 and then 4.50-1.50 is 3.
Hopes this helps.
Jerry is a judge. He hears 5 cases every 2\dfrac382 8 3 ? hours. Jerry hears cases at a constant rate. How many cases does he hear per hour?
Answer:
[tex]\frac{40}{19}\text{ or }2\frac{2}{19}[/tex] cases per hour.
Step-by-step explanation:
We are told that Jerry hears 5 cases every [tex]2\frac{3}{8}[/tex] hours.
To find the number of cases that Jerry hears per hour let us divide 5 by [tex]2\frac{3}{8}[/tex].
[tex]\text{Jerry hears cases per hour}=5\div 2\frac{3}{8}[/tex]
Let us convert our mixed fraction into improper fraction.
[tex]\text{Jerry hears cases per hour}=5\div \frac{19}{8}[/tex]
Since dividing a number by a fraction is same as multiplying the number by the reciprocal of the fraction.
[tex]\text{Jerry hears cases per hour}=5\times \frac{8}{19}[/tex]
[tex]\text{Jerry hears cases per hour}=\frac{40}{19}[/tex]
[tex]\text{Jerry hears cases per hour}=2\frac{2}{19}[/tex]
Therefore, Jerry hears [tex]\frac{40}{19}\text{ or }2\frac{2}{19}[/tex] cases per hour.
Ava has 20-foot length of wire.She cuts the wire into 6 pieces of equal length.The length of each piece of wire will fall between which two whole-number lengths?
When a 20-foot length of wire is cut into 6 pieces of equal length, each piece would be approximately 3.33 feet long. Rounding to the nearest whole numbers, this means the length of each piece will fall between 3 feet and 4 feet.
Explanation:To find the length of each piece of wire when a 20-foot length of wire is cut into 6 pieces of equal length, you divide the total length by the number of pieces. So, you calculate:
Divide the total length of wire (20 feet) by the number of pieces (6).20 feet / 6 pieces = approximately 3.33 feet per piece.Since we're looking for whole-number lengths that the length of each piece falls between, we can round 3.33 feet down to the nearest whole number (3 feet) and up to the next whole number (4 feet). Thus, the length of each piece will fall between 3 feet and 4 feet.
In the coordinate plane shown, how far apart are points B and D? Explain how you can use the Pythagorean theorem to determine this.
Answer:
10.3 units
Step-by-step explanation:
From the given graph, we can see the coordinates of the points B (-2, 4) and D (3, -5).
To use the Pythagorean Theorem, we must have a right angled triangle. So we can select a point X (3, 4) to calculate the distance between B and D using the Pythagoras Theorem.
BX = 5, XD = 9
BD = [tex]\sqrt{BX^2+XD^2}[/tex]
BD = [tex]\sqrt{(5)^2+(9)^2} =\sqrt{106} =10.29[/tex]
Therefore, the points B and D are 10.3 units apart.
The pressure of a gas p(v) varies inversely with the volume of the gas v. The pressure of a gas measures 25 kg/cm^2 when its volume is 200cm^2. Which equation can be used to find the pressure of the gas when the volume is changed?
A.p(v)=8/v
B.p(v)=8v
C.p(v)=5000/v
D.p(v)=5000v
Answer:
C.p(v)=5000/v
Step-by-step explanation:
Got it right on the test.
The equation that can be used to find the pressure of the gas when the volume is changed is P(v) = 500/v
Given:
p(v) = pressure of a gas
v = volume of the gas
P(v) varies inversely with v
let
k = constant of proportionality
The equation:
P(v) = k/v
If P(v) = 25 kg/cm² and v = 200cm²
Therefore,
P(v) = k/v
25 = k / 200
25 × 200 = k
k = 5,000
substitute the value of k into the equation
So,
P(v) = 500/v
Read more:
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Please help! A new car that sells for $21,000 depreciates (decreases in value) 16% per year. Write a function that models the value of the car. Find the value of the car after 3 years.
A) $8,602
B) $11,779
C) $12,899
D) $12,447
Answer:
The function is:
21000 * (1 - [tex]\frac{16}{100}[/tex])[tex]^{n}[/tex]
The price after 3 years would be D) $12,447
Step-by-step explanation:
Because the value is depreciating, the price will decrease.
The function formula is:
Amount x (1 ± [tex]\frac{percentage}{100}[/tex])[tex]^{n}[/tex]
Where n is the amount of years and the ± is a + if the value is increasing, and a - if the value is depreciating.
So plug the values in, with a minus:
21000 * (1 - [tex]\frac{16}{100}[/tex])[tex]^{n}[/tex]
The price after 3 years would simply be the following equation:
21000 * (1 - [tex]\frac{16}{100}[/tex])[tex]^{3}[/tex]
Which gives the result 12446.7 or 12447 to 1.d.p
This means that the answer is D) $12,447!
Which graph shows the solution to the system of inequalities below?
x+y<3
-5x+2y<10
Answer:
The last graph
Step-by-step explanation: On edge.
Answer:
D or the last graph
Step-by-step explanation:
Edge 2022
2. A savings account is started with an initial deposit of $500. The account earns 1.5% interest compounded annually.
(a) Write an equation to represent the amount of money in the account as a function of time in years.
(b) Find the amount of time it takes for the account balance to reach $800. Show your work.
Which functions are even? Select all that apply
Answer:
The even functions are options 2, 3, and 5
Step-by-step explanation:
Please, see the attached file.
Thanks.
Answer:
Options B, C and E are even functions.
Step-by-step explanation:
If f(x) = f(-x) then function is called to be even.
A). f(x) = ∛8x
f(-x) = ∛8(-x) = (∛8)(∛(-x) = 2∛(-x)
Therefore f(x) ≠ f(-x)
So function is not an even function.
B). [tex]f(x)=log_{9}x^{6}[/tex]
[tex]f(-x)=log_{9}(-x)^{6}[/tex]
[tex]=log_{9}(x)^{6}[/tex]
f(x) = f(-x)
So this function is even.
C). [tex]f(x)=\frac{1}{x^{8}+7x^{7}}[/tex]
[tex]f(-x)=\frac{1}{(-x)^{8}+7(-x)^{6}}[/tex]
= [tex]\frac{1}{x^{8}+7x^{6}}[/tex]
f(x) = f(-x)
Therefore given function is even.
D). f(x) = [tex]e^{x^{8}-x }[/tex]
[tex]f(-x)=e^{(-x)^{8}-(-x)}=e^{x^{8}+x}[/tex]
Therefore f(x) ≠ f(-x)
So the given function is not even.
E). f(x) = |8x| - 3
f(-x) = |8(-x)| - 3
= |8x| - 3
f(x) = f(-x)
Therefore, function is even.
F). [tex]f(-x)= -9(-x)^{10}+5(-x)^{4}-12(-x)[/tex]
[tex]f(-x)= -9(x)^{10}+5(x)^{4}+12(x)[/tex]
f(x) ≠ f(-x)
Therefore the given function is not an even function.
Options B, C and E are even functions.
Write the equation in standard form. Identify the important features of the graph:
x^2+y^2-9x+10y+15=0
Answer:
Standard form: [tex]\left(x-\dfrac{9}{2}\right)^2+(y+5)^2=\dfrac{121}{4}.[/tex]
This equation represents the circle with the center at the point [tex]\left(\dfrac{9}{2},-5\right)[/tex] and the radius [tex]r=\dfrac{11}{2}.[/tex]
Step-by-step explanation:
Consider expression [tex]x^2+y^2-9x+10y+15=0.[/tex]
First, form perfect squares:
[tex](x^2-9x)+(y^2+10y)+15=0,\\ \\\left(x^2-9x+\dfrac{81}{4}\right)-\dfrac{81}{4}+(y^2+10y+25)-25+15=0,\\ \\\left(x-\dfrac{9}{2}\right)^2+(y+5)^2=10+\dfrac{81}{4},\\ \\\left(x-\dfrac{9}{2}\right)^2+(y+5)^2=\dfrac{121}{4}.[/tex]
This equation represents the circle with the center at the point [tex]\left(\dfrac{9}{2},-5\right)[/tex] and the radius [tex]r=\dfrac{11}{2}.[/tex]
Select the points that lie on the function h( x ) = 3 x 2 .
(1, 3)
(1, 9)
(-1, -3)
(-1, 3)
How would i solve this? *15 ponits
Answer:
(1, 3)
(-1, 3)
Step-by-step explanation:
h(x) = 3x^2
Let x =1
h(1) = 3 * (1)^2
= 3(1)
= 3
So if the input is 1 the output is 3
h(-1) = 3 * (-1)^2
= 3 *1
If the input is -1 the output is 3
Answer:(1,3) and (-1,3)
Step-by-step explanation:
m∥n, m∠1 = 65°, m∠2 = 60°, and m∠6 = 85°. What is m∠DBC?
Answer:
∠DBC = 40°
Step-by-step explanation:
We are given a figure where we know that the angle m∠1 = 65°, m∠2 = 60° and m∠6 = 85°. With the help of these given measures of the angles, we are to find the measure of the angle m∠DBC.
Since the sum of angles in a triangle is equal to 180 degrees, so:
∠1 + ∠2 + ∠3 = 180
∠3 = 180 - (65 + 60)
∠3 = 55°
Also ∠6 and ∠B are alternate interior angles so if ∠6 = 85° then ∠B is also = 85°.
Now that we know ∠3 and ∠B, we can find ∠DBC:
∠DBC = 180 - (85 + 55)
∠DBC = 40°
Answer:40
Step-by-step explanation:
See angle 1 = 65°
Angle 2 = 60°
We know in a triangle all angle count 180°
So angle 3 = 55°
Now in a straight line all angle count 180°
So angle DBC + angle 3 + remaining angle along the line m will count 180°
Now angle 6 and remaining angle along the line m will be equal as 'm' ?and 'b' are parallel lines and t is intersecting them so it subtend equal angles.
Angle 6 = 85° so remaining angle along the line m is also 85°
We know angle DBC + angle 3 + rem. angle = 180°
Or 55° + 85° + angle DBC = 180°
Therefore, angle DBC = 40°
Hope it helps!!!
These are just like the last ones please help.
8.
Statement Reason
1. A'F is perpendicular bisector of JK 1. Given
2. JA ≅ KA 2. Dfinition of perp bisector
3. ∠JAF and ∠KAF are right angles 3. Dfinition of perp bisector
4. A'F ≅ A'F 4. Reflexive Property
5. ΔJFA ≅ ΔKFA 5. SAS Theorem
6.
(ANGLE): It is given that ∠AMD ≅ ∠EDM
(SIDE): MD ≅ MD by the Reflexive Property
Which angle would satisfy AAS? ∠MAD ≅ ∠ DEM
NOTE: If you chose the other angle, it would satisfy ASA
What is the value of the remainder if 10x^4 – 6x^3 + 5x^2 – x + 1 is divided by x – 3?
Answer: 691
Step-by-step explanation:
There are 3 different ways to find the remainder. I am not sure which method you are supposed to use, so I will solve using all 3 methods.
Long Division:
10x³ + 24x² + 77x + 230
x - 3 ) 10x⁴ - 6x³ + 5x² - x + 1
- (10x⁴ - 30x³) ↓ ↓ ↓
24x³ + 5x² ↓ ↓
- (24x³ - 72x²) ↓ ↓
77x² - x ↓
- (77x² - 231x) ↓
230x + 1
- (230x - 690)
691 ← remainder
Synthetic Division:
x - 3 = 0 ⇒ x = 3
3 | 10 -6 5 -1 1
| ↓ 30 72 231 690
10 24 77 230 691 ← remainder
Remainder Theorem:
f(x) = 10x⁴ - 6x³ + 5x² - x + 1
f(3) = 10(3)⁴ - 6(3)³ + 5(3)² - (3) + 1
= 810 - 162 + 45 - 3 + 1
= 691
What function equation is represented by the graph?
f(x)=−2x−2
f(x)=2x−3
f(x)=−2x−3
f(x)=2x−2
9514 1404 393
Answer:
(b) f(x) = 2^x -3
Step-by-step explanation:
The horizontal asymptote is y=-3, eliminating the first and last choices.
The curvature is upward, eliminating the third choice.
The graph is a representation of ...
f(x) = 2^x -3
A tree casts a shadow that is 150 feet long. If the angle of elevation from the tip of the shadow to the top of the tree is 30°, how tall is the tree to the nearest foot?
A) 75 feet
B) 87 feet
C) 106 feet
D) 212 feet
B) 87 feet
Step-by-step explanation:The mnemonic SOH CAH TOA reminds you the relationship between angle, adjacent, and opposite sides is ...
... Tan = Opposite/Adjacent
In this geometry, the side adjacent to the angle is marked 150 ft, and the side opposite the angle is the height we want to find. This means ...
... tan(30°) = height/(150 ft)
Multiplying by 150 ft, we get ...
... height = (150 ft)·tan(30°) ≈ 87 ft
You and your friend are selling magazine subscriptions for a fundraiser. After w w weeks, you have sold (3w+4) subscriptions and your friend has sold (5w+1) subscription . A.Write an expression in simplest form that represents the difference between the number of subscriptions your friend has sold and the number you have sold.
Answer:
The simplest form that represents the difference is ( 2w-3).
Step-by-step explanation:
In this sum after w weeks subscription sold by me = 3w+4
and the subscription sold by my friend =5w+1
so the difference between the numbers of my friend and me
⇒(5w+1)-(3w+4)
⇒5w+1-3w-4
⇒2w-3
So the simplest form is (2w-3).
Final answer:
The difference in the number of subscriptions sold by the friend and the student after w weeks is represented by the simplified expression 2w - 3.
Explanation:
To find the difference between the number of subscriptions your friend has sold and the number you have sold, you simply subtract your sales from your friend's sales. The expression for your sales is (3w + 4) subscriptions and for your friend's sales is (5w + 1) subscriptions. So, the expression representing the difference will be:
(5w + 1) - (3w + 4)
Distributing the negative sign across the terms in the second set of parentheses gives us 5w + 1 - 3w - 4. Combining like terms, which are the 'w' terms and the constant terms separately, we get:
(5w - 3w) + (1 - 4) which simplifies to 2w - 3.
This expression 2w - 3 is the simplified form representing the difference between the number of subscriptions sold by your friend and you after w weeks.
A card is chosen at random from a deck of 52 cards. It is replaced, and a second card is chosen. What is the probability that both cards chosen are jacks?
A.) 1/26
B.) 1/13
C.) 1/169
D.) 2/13
Answer:
C.) 1/169
Step-by-step explanation:
There are 4 jacks in a deck of 52 cards
The probability the first card is a jack
4/52 = 1/ 13
Since we replace the card
The probability the second card is a jack
4/52 = 1/ 13
To get the probability that we get a jack then a jack, we multiply the probabilities
1/13 * 1/13 = 1/169