Answer:
8x³ - 2x² - 51x - 45
Step-by-step explanation:
(x - 3)(2x + 3)(4x + 5) ← expand the 2nd/3rd factors using FOIL
= (x - 3)(8x² + 10x + 12x + 15)
= (x - 3)(8x² + 22x + 15)
multiply each term in the second factor by each term in the first factor.
x(8x² + 22x + 15) - 3(8x² + 22x + 15) ← distribute parenthesis
= 8x³ + 22x² + 15x - 24x² - 66x - 45 ← collect like terms
= 8x³ - 2x²- 51x - 45
Expand first 2 bracket first to get:
2x^2 + 3x - 6x - 9 & simplify, then expand with last bracket.
2x^2 - 3x - 9 (4x + 5)
2x^2 x 4x = 8x^4
2x^2 x 5 = 10x^2
Repeat for the next two numbers next to the bracket.
You get => 8x^3 + 10x^2 - 12x^2 - 15x - 36x - 45
Final simplified answer of:
8x^3 - 2x^2 - 51x - 45
Hope this helps!
Marika is training for a track race. She start sprinting by 100 yards. She gradually increases her distance, adding 4 yards a day for 21 days. the explicit formula that models this situation is an=100+(n-1)4. how far does seh sprint on day 21
Answer:
180 yards
Step-by-step explanation:
The number of yards she sprints on day 21 can be found by evaluating the formula with n=21.
Solutiona21 = 100 +(21 -1)4 = 100 +(20)(4) = 100 +80 . . . . . use 21 in place of n
a21 = 180
Marika sprints 180 yards on day 21.
Subtract the given fraction:-
[tex] \frac{3}{5} - \frac{5}{3} = [/tex]
Marissa is selling paintings for $15 each and bracelets for $7 each. Her goal is to sell at least $800 in products, and she must sell at least 60 bracelets. Which of the following combinations will satisfy these constraints?
The first inequality is represented by the purple area seen in the picture and the second inequality by the black area seen in the picture, the solutions set is the region where the two areas overlap each other.
How to find posible solutions from a system of inequalities
In this question we have two inequalities representing constraints that Marissa should satisfy, provided that she wants to make a profit in selling paintings and bracelets.
The first inequality represents the minimum profit required from the sales of paintings (x) and bracelets (y) and the second one represents the minimum number required of sold bracelets. The two inequalities are described below:
15 · x + 7 · y ≥ 800 (1)
y ≥ 60 (2)
Since there are more than one solution, we decided to define a solutions set with the help of graphing tool. The first inequality is represented by the purple area seen in the picture and the second inequality by the black area seen in the picture, the solutions set is the region where the two areas overlap each other.
Remark
The statement is incomplete and such issue cannot be resolved. We decided to modify the statement as follows:
Marissa is selling paintings for $ 15 each and bracelets for $ 7 each. Her goal is to sell at least $ 800 in products, and she must sell at least 60 bracelets. Please show the set of all possible solution that will satisfy these constraints?
To learn more on inequalities: https://brainly.com/question/20383699
#SPJ1
Answer:
26 paintings and 61 bracelets
Step-by-step explanation:
if you do 26x15=390 and 61x7=427
390+427=817
so the answer is 26 paintings and 61 bracelets
also, I took the test so I know its right
Can someone help me out please
By just adding the given areas, we conclude that the definite integral is equal to 3.026
How to calculate the definite integral?
The integral will be equal to the sum of the four areas between points a and c.
The areas above the horizontal axis are positive areas, these are A and C.
While the areas below the horizontal axis are negative areas, these are B and D.
Then the definite integral will be:
I = A - B + C - D
Here we know that:
A = 1.311
B = 2.229
C = 5.545
D = 1.601
Replacing that, we conclude that the definite integral is
I = 1.311 - 2.229 +5.545 - 1.601 = 3.026
If you want to learn more about integrals:
https://brainly.com/question/22008756
#SPJ1
determine o vértice da função quadrática y=16x²-6x-10
pls help right now need pleaseee
Answer:
-1/2
Step-by-step explanation:
The cosine is equal to the x coordinate of the point where the terminal side of the angle intersects the unit circle.
Write and solve a system of equations. Be sure to label the variables. The sum of two numbers is fourteen. Two times the first number plus three times the second number is nine. What are the two numbers? Show and Explain all work.
Answer:
First number = 33, Second number = -19
Step-by-step explanation:
We can use F to represent the first number and S to represent the second number.
Our two equations then are F + S = 14 and 2F + 3S = 9
We can use substitution:
[tex]F+S = 14\\2F+3S=9\\F=14-S\\2(14-S)+3S=9\\28-2S+3S=9\\28+S=9\\S=-19\\\\F-19=14\\F=33[/tex]
I don’t understand what I did wrong
Step-by-step explanation:
You got your fraction messed up
It should be -3/2 or -1.5
Write the first five terms of the recursively defined sequence. a1 = 6, ak 1 = 1 3 ak2
The first five terms of the recursively defined sequence are 6, 12, 48, 768, 196608
For given question,
We have been given the recursive formula of a sequence.
[tex]a_{k+1}=\frac{1}{3}{a_k}^2[/tex]
Also, the first term of the sequence is,
a1 = 6
Substitute k = 1 in given recursive formula.
⇒ [tex]a_{1+1}=\frac{1}{3}{a_1}^2[/tex]
⇒ a2 = 1/3 (6)²
⇒ a2 = (1/3) × 36
⇒ a2 = 12
Substitute k = 2 in given recursive formula.
⇒ [tex]a_{2+1}=\frac{1}{3}{a_2}^2[/tex]
⇒ a3 = (1/3) × (12)²
⇒ a3 = (1/3) × 144
⇒ a3 = 48
Substitute k = 3 in given recursive formula.
⇒ [tex]a_{3+1}=\frac{1}{3}{a_3}^2[/tex]
⇒ a4 = (1/3) × (48)²
⇒ a4 = (1/3) × 2304
⇒ a4 = 768
Substitute k = 4 in given recursive formula.
⇒ [tex]a_{4+1}=\frac{1}{3}{a_4}^2[/tex]
⇒ a5 = (1/3) × (768)²
⇒ a5 = (1/3) × 589824
⇒ a5 = 196608
Therefore, the first five terms of the recursively defined sequence are 6, 12, 48, 768, 196608
Learn more about the recursive formula of sequence here:
https://brainly.com/question/14457800
#SPJ4
y=–6x+2
–12x – 2y=–4
How many solutions does this linear system have?
The linear equation y = -6x + 2; -12x - 2y = -4 has no solution
Linear equationy = -6x + 2
-12x - 2y = -4
Substitute y = -6x + 2 into (2)-12x - 2y = -4
-12x - 2(-6x + 2) = -4
-12x + 12x -4 = -4
-12x + 12x = - 4 + 4
0 = 0
Solve for xy = -6x + 2
y - 2 = -6x
x = (y - 2) / -6
Substitute into (2)-12x - 2y = -4
-12(y- 2)/ 6 - 2y = -4
(-12y + 24) / 6 - 2y = -4
-2y + 4 - 2y = 4
0 = 0
Learn more about linear equation:
https://brainly.com/question/4074386
#SPJ1
Please help me with these questions. Thank you!
Answer:
382.19cm²
Step-by-step explanation:
a / sin(A) = b / sin(B)
a / sin(68) = 53 / sin(95)
a = (53 x sin(68)) / sin(95)
a = 49.33
area = ½absin(C)
C = 180 - (95 + 68)
C = 180 - 163
C = 17°
area = ½(53)(49.33)sin(17)
area = 382.19cm²
Which equation describes the circle having center point (3,7) and radius r = 4
in standard form?
A. (x-3)²+(y-7)² = 4
B. (x+3)² + (y+7)² =4
c. (x-3)²+(y-7)² = 16
D. (x+3)² + (y+7)² = 16
Which description best fits this picture?
Answer:
Accurate AND Precise
15 POINTS
Data Analysis and Probability
Constructing a box-and-whisker plot
The box and whisker plot for the data-set is given at the end of the question.
What is a box plot?It is a plot that focuses the interquartile range of the population, which is the difference between the third and the first quartile, but gives a five number summary of the population, composed by these following measures.
The smallest value.The first quartile.The median.The third quartile.The highest value.For this problem, we have that:
The smallest value is of 50, hence the left dot has to be at 50 in your graph.The highest value is of 77, hence the right dot has to be at 50 in your graph.The data-set has an even cardinality, of 17, hence the median is the 9th element, which is of 65, which means that the middle vertical line should be at 65.The first quartile is the median of the first eight elements, hence the mean of the 4th and 5th elements, which are 55 and 57, hence the first quartile is of 56, which means that the left vertical line should be at 56.The third quartile is the median of the first eight elements, hence the mean of the 4th and 5th elements of the second half, which are both 71, hence the third quartile is of 71, which means that the right vertical line should be at 71.The graph at the end gives a vertical version of the box plot.
More can be learned about box plots at https://brainly.com/question/27721471
#SPJ1
PLS HELP ASAP....i need to finish this soon
A GDP per capita of $13,000 would correspond to the following corruption score of: B. 42.
What is a scatter plot?A scatter plot can be defined as a type of graph which is used for the graphical representation of the values of two variables, with the resulting points showing any association (correlation) between the data set.
Based on the information provided in the table above, we can logically deduce that the situation can be modeled by this linear function:
y = 511x - 8540
Where:
x is the corruption score.
y is GDP per capita in dollars.
How to calculate the corruption score?Based on the model, a GDP per capita of $13,000 would correspond to the following corruption score:
y = 511x - 8540
13,000 = 511x - 8540
511x = 13,000 + 8540
511x = 21,540
x = 21,540/511
x = 42.1 ≈ 42.
Read more on scatterplot here: brainly.com/question/6592115
#SPJ1
d. If you double a certain number and subtrack 7 you get the same answer as when you add 5 to the number, Determine the number
Answer:
12
Step-by-step explanation:
Let n = the number.
2n - 7 = n + 5
n = 12
Let’s check if we got the right answer by substituting 12 for n into the original equation.
2*12 - 7 = 12 + 5
24 - 7 = 17
17 = 17
WILL GIVE CROWN
What is the remainder of 2x^2+7x-39/x-7
show work
On dividing we get 69/2 or 34.5 as remainder.
In algebra, the factor theorem is a theorem linking factors and zeros of a polynomial. It is a special case of the polynomial remainder theorem. The factor theorem states that a polynomial f(x) has a factor if and only if f=0.
Long division is best suited for such expressions:-
On applying long division and factor theorem we get
2x²+7x-39 = (2x - 1/2)(x-7) + 69/2
Thus on dividing we get 69/2 or 34.5 as remainder.
Learn more about division here :
https://brainly.com/question/2273245
#SPJ1
Quick algebra 1 question for 10 points!
Only answer if you know the answer, quick shout-out to tariqareesha2 and MrBrainly, tysm for the help!
The range of the quadratic function y = (2 / 3) · x² - 6 is {- 6, 0, 18, 48}.
What is the range of a quadratic equation?
In this case we have a quadratic equation whose domain is stated. The domain of a function is the set of x-values associated to only an element of the range of the function, that is, the set of y-values of the function. We proceed to evaluate the function at each element of the domain and check if the results are in the choices available.
x = - 9
y = (2 / 3) · (- 9)² - 6
y = 48
x = - 6
y = (2 / 3) · (- 6)² - 6
y = 18
x = - 3
y = (2 / 3) · (- 3)² - 6
y = 0
x = 0
y = (2 / 3) · 0² - 6
y = - 6
x = 3
y = (2 / 3) · 3² - 6
y = 0
x = 6
y = (2 / 3) · 6² - 6
y = 18
x = 9
y = (2 / 3) · 9² - 6
y = 48
The range of the quadratic function y = (2 / 3) · x² - 6 is {- 6, 0, 18, 48}.
To learn more on functions: https://brainly.com/question/12431044
#SPJ1
HELPPPP WITH ALL OF THE 3 PLSSS
Answer:
See picture.
C is the point that does not move because it is on the line of reflection
Yes, a reflection is a rigid motion. It does not change size. A dilation changes the size.
Step-by-step explanation:
In the picture, you will see that I traced the triangle on tracing paper and then folded (flipped) the drawing over the line of reflection.
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Match each solid cone to its surface area. Answers are rounded to the nearest square unit.
829 square units
628 square units
444 square units
996 square units
8 units
12 units
525 square units
>
758 square units
Rounded to the nearest square units, the surface area of the cone, is: 524 square units.
How to Find the Surface Area of a Cone?The surface area of a cone = πr(r + l), where:
r is the radius of the cone
l is the length of the cone.
Given the following:
Radius of the cone (r) = 12/2 = 6 units
Slant height of the cone (l) = √(21² + 6²) [Pythagorean theorem]
Slant height of the cone (l) = 21.8 units.
Plug in the values into πr(r + l):
Surface area of the cone = π × 6(6 + 21.8)
Surface area of the cone = 3.14 × 6(27.8)
Surface area of the cone ≈ 525 square units
The surface area of the cone, approximated to the nearest square units, we have: 524 square units.
Learn more about the surface area of cone on:
https://brainly.com/question/6613758
#SPJ1
Drag the tiles to the boxes to form correct pairs. match each pair of polynomials to their sum. 12x2 3x 6 and −7x2 − 4x − 2 −2x − 2 2x2 − x and −x − 2x2 − 2 2x2 x x2 2 and x2 − 2 − x 2x2 9x − 2 x2 x and x2 8x − 2 5x2 − x 4
The sum of each of the 4 polynomials and their answers are respectively;
12x² + 3x + 6 + (-7x²) – 4x – 2 = 5x² - x + 4
(2x² - x) + (-x – 2x² – 2) = -2x - 2
(x³ + x² + 2) + (x² – 2 - x³) = 2x²
(x² + x) + (x² + 8x - 2) = 2x²+ 9x - 2
How to find the sum of Polynomials?
1) We want to find the sum of the polynomials (12x² + 3x + 6) and (-7x² – 4x – 2). Thus, we have;
12x² + 3x + 6 + (-7x²) – 4x – 2
= 5x² - x + 4
2) We want to find the sum of the polynomials (2x² - x) and (-x – 2x² – 2). Thus, we have;
(2x² - x) + (-x – 2x² – 2)
= -2x - 2
3) We want to find the sum of the polynomials (x³ + x² + 2) and (x² – 2 - x³). Thus, we have;
(x³ + x² + 2) + (x² – 2 - x³)
= 2x²
4) We want to find the sum of the polynomials (x² + x) and (x² + 8x - 2). Thus, we have;
(x² + x) + (x² + 8x - 2) = 2x²+ 9x - 2
The sum of each of the 4 polynomials and their answers are respectively;
12x² + 3x + 6 + (-7x²) – 4x – 2 = 5x² - x + 4
(2x² - x) + (-x – 2x² – 2) = -2x - 2
(x³ + x² + 2) + (x² – 2 - x³) = 2x²
(x² + x) + (x² + 8x - 2) = 2x²+ 9x - 2
Read more about Sum of Polynomials at; https://brainly.com/question/12700460
#SPJ1
Find the area of the trapezoid.
Hint: Use the formula for the area of
a trapezoid given below.
A = (b₁+b2) h
Trapezoid Area
= [?] cm²
b₁ = 6 cm
1h = 7 cm
b₂
=
8 cm please explain answer in full detail
The area of the trapezoid in the given image is: 49 cm².
What is a Trapezoid?A trapezoid can be described as a quadrilateral that has four sides, whereby one pair of opposite sides are parallel to each other.
How to Find the Area of a Trapezoid?The area of a trapezoid is calculated using the formula, Area = 1/2 × (a + b) × h, where:
a and b represents lengths of the parallel sides of the trapezoid
h = height of the trapezoid.
Given the parameters for the trapezoid as:
a = 6 cm
b = 8 cm
h = 7 cm
Plug in the values into Area = 1/2 × (a + b) × h:
Area of trapezoid = 1/2 × (6 + 8) × 7
Area of trapezoid = 1/2 × (14) × 7
Area of trapezoid = 7 × 7
Area of trapezoid = 49 cm²
Thus, the area of the trapezoid in the given image is: 49 cm².
Learn more about the area of trapezoid on:
https://brainly.com/question/1463152
#SPJ1
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at miles per hour. The eastbound train travels at miles per hour. How long will it take for the two trains to be miles apart
Answer:
one hour
Step-by-step explanation:
if they are going the same speed going differnet directions they will be 2 miles apart after one hour
o trees are growing in a clearing. The first tree is 5.6 feet tall and casts a 4.2-foot shadow. The second tree casts a 42.3-foot shadow. How tall is the second tree to the nearest tenth of a foot?
The second tree is 56.4 ft tall.
Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are identical, their respective sides are equal in number and their corresponding angles are congruent.
Let the length of the tall tree be x. Thus by similarity of triangles we get,
Length of small tree/ Shadow Length of small tree =
Length of Tall tree/ Shadow Length of tall tree
Substituting the values we get,
5.6/4.2 = x/42.3
x = 56.4
Thus the second tree is 56.4 ft tall.
Learn more about Similarity of triangles here :
https://brainly.com/question/25882965
#SPJ1
sketch the graph: y=1/3x+2
The slope of the line is 1/3and the y-intercept is at the (0, 2) as shown in the graph below.
Graph of a linear functionA linear function is a function that has a leading degree of 1. The standard equation for a linear function is expressed as:
y = mx + b
where
m is the slope which is equal to the rate of change of y coordinate to x-coordinates.
b is the y-intercept
Given the following equation
y= 1/3x + 2
The slope of the line is 1/3 and the y-intercept is at the(0,2) as shown in the graph below.
Learn more on equation of a line here: https://brainly.com/question/13763238
#SPJ1
A game involves rolling a fair six-sided die. if the number obtained on the die is a multiple of three, the player wins an amount equal to the number on the die times $20. if the number is not a multiple of three, the player gets nothing. how will you model the simulation for the roll of a die?
The winning probability is 1/3.
What is probability?A probability is a number that represents the likelihood or chance that a specific event will occur. Probabilities can be stated as proportions ranging from 0 to 1, as well as percentages ranging from 0% to 100%.To find the winning probability:
Favorable outcomes to win are 3 and 6.Total outcomes are 6in fair dice.To win $20 × 3 or $20 × 6 favorable outcome is 1 (3 and 6 respectively).The probability is 1 / 6.So, the probability of winning some money = 2/6 = 1/3Therefore, the winning probability is 1/3.
Know more about probability here:
https://brainly.com/question/24756209
#SPJ4
Me and mrs corrino can complete a job in 5 hours if mr corrino works twice as long as mrs corrino if each foes the job alone how long does it take mrs corrubi to complete the job alone
Mrs. Corrubi takes 7.5 hours to complete the job alone.
Directly proportional: as one amount increases, another amount increases at the same rate. Direct variation means when one quantity changes, the other quantity also changes in direct proportion
Inversely Proportional: when one value decreases at the same rate that the other increases. An increase in the quantity A leads to a decrease in quantity B and vice versa.
Let the number of hours taken by Mrs Corrubi to do a particular work be x.
∴ The number of hours taken by Mr Corrubi to do a particular work will be 2x.
So according to the condition,
1/x + 1/2x = 1/5
(2+1)/2x = 1/5
3/2x = 1/5
2x = 15
x = 7.5 hours.
Thus Mrs. Corrubi takes 7.5 hours to complete the job alone.
Learn more about Direct and inverse Variations here :
https://brainly.com/question/11592410
#SPJ1
In the figure below, what is the length of BC?
A) 12
B) 13
C) 17
D) 18
E) 22
B is the answer
i simplified the theorem, but i hope this makes sense!
Answer:
B
Step-by-step explanation:
Select the correct answer. the data manager for a state political party gathered data to determine how many citizens would support the party’s senate candidate. he polled citizens in 30 similarly sized senate districts and found a sample mean of 70,438 citizens. statewide data shows that the population standard deviation is 645.3. what is the approximate 90% confidence interval for this situation? a. 70,134 and 70,742 b. 70,207 and 70,669 c. 70,403 and 70,473 d. 70,244 and 70,632
Answer:
D. 70,244 and 70,632
Step-by-step explanation:
Got it right on PLATO/EDMENTUM
70,244 and 70,632 is the approximate 90% confidence interval for this situation.
A confidence interval, in statistics, refers to the probability that a population parameter will fall between a set of values for a certain proportion of times.
A confidence interval displays the probability that a parameter will fall between a pair of values around the mean.Confidence intervals measure the degree of uncertainty or certainty in a sampling method.They are most often constructed using confidence levels of 95% or 99%.Confidence intervals measure the degree of uncertainty or certainty in a sampling method. They can take any number of probability limits, with the most common being a 95% or 99% confidence level. Confidence intervals are conducted using statistical methods.
Statisticians use confidence intervals to measure uncertainty in a sample variable. For example, a researcher selects different samples randomly from the same population and computes a confidence interval for each sample to see how it may represent the true value of the population variable. The resulting datasets are all different; some intervals include the true population parameter and others do not.
Learn more about confidence intervals here
https://brainly.com/question/24131141
#SPJ4
A sine function has an amplitude of 3, a period of pi, and a phase shift of pi/2. What is the y-intercept of the function?
A. 3
B.0
C.-3
D. pi/4
Based on the calculations, we can logically deduce that the y-intercept of this sine function is equal to: A. 3.
Given the following data:
Amplitude = 3Period = πPhase shift = π/2How to determine the y-intercept of this function?Mathematically, a sine function is modeled by this equation:
y = Asin(ωt + ø)
Where:
A represents the amplitude.ω represents angular velocity.t represents the period.ø represents the phase shift.Also, the period of a sine wave is given by:
t = 2π/ω
2 = 2π/ω
ω = 2
Substituting the given parameters into the equation, we have;
y = 3sin(2t + π/2)
At t = 0, we have:
y = 3sin(2(0) + π/2)
y = 3sin(π/2)
y = 3sin(90)
y = 3 × 1
y = 3.
In conclusion, we can logically deduce that the y-intercept of this sine function is equal to 3.
Read more on phase shift here: https://brainly.com/question/27692212
#SPJ1