A = (-1, 2)
B = (7, 10)
1:3
Formula
\(\begin{gathered} \text{ x = }\frac{x1\text{ + rx2}}{1\text{ + r}} \\ \text{ y = }\frac{y1\text{ + ry2}}{1\text{ + r}} \end{gathered}\)Substitution
\(\text{ x = }\frac{-1\text{ + }\frac{1}{3}\text{(7)}}{1\text{ + }\frac{1}{3}}\text{ = }\frac{-1\text{ + }\frac{7}{3}}{\frac{3\text{ + 1}}{3}}\text{ = }\frac{\frac{-3\text{ + 7}}{3}}{\frac{3\text{ + 1}}{3}}\text{ = }\frac{\frac{4}{3}}{\frac{4}{3}}\text{ = 1}\)\(\text{ y = }\frac{2\text{ + }\frac{1}{3}(10)}{1\text{ + }\frac{1}{3}}\text{ = }\frac{2\text{ + }\frac{10}{3}}{\frac{3\text{ + 1}}{3}}\text{ = }\frac{\frac{6\text{ + 10}}{3}}{\frac{4}{3}}\text{ = }\frac{16}{4}\text{ = 4}\)Result x = 1, y = 4
On this coordinate plane, triangle ABC will be rotated 90 degrees clockwise about the origin to form its image, triangle A’B’C’.Select the correct orientation of triangle A’B’C’ and position it correctly on the plane.
Given
A(2,8), B(2,4), C(8,4)
A 90° clockwise about the origin has the following rules
\((x,y)\rightarrow(y,-x)\)Apply these rules to each of the point and we get
\(\begin{gathered} A\left(2,8\right)\rightarrow A^{\prime}(8,-2) \\ B\left(2,4\right)\operatorname{\rightarrow}B^{\prime}(4,-2) \\ C\left(8,4\right)\operatorname{\rightarrow}C^{\prime}(4,-8) \end{gathered}\)Drawing a diagram of the image we have the following
Whats the answer please help its worth 10 points!
Please answer immediately I beg.
A pyramid and a cone have the same base area and height. The volume
of the pyramid is 175m³. What is the volume of the one? Explain your answer.
The volume of cone is 175 m³
Firstly,
Volume of Pyramid.
The volume (V) of a pyramid is
V = ⅓Ah
Data:
V = 175m³
Calculation:
175 = ⅓× A× h
Ah = 175*3
Ah = 525m³
Secondly,
The volume (V) of a cone is
V = ⅓Ah
Data:
Ah = 525 m³
Calculation:
V = ⅓ A× h
V = 175 m³
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Hove
Find the average rate of change indicated below.
y = 4x+1
[-1, 1)
A.15
B.3.75
C.1.875
D.7.5
The average rate of change of the function over the interval is 4
Finding the average rate of changeFrom the question, we have the following parameters that can be used in our computation:
y = 4x + 1
The interval is given as
[-1, 1)
The function is a linear function
This means that it has a constant average rate of change
From y = 4x + 1, we have
Rate = 4
Hence, the rate is 4
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Use the functions a(x) = 7x + 10 and b(x) = 12x - 18 to complete the function operations listed below.
Part A: Find (a + b)(x). Show your work.
Part B: Find (a - b)(x). Show your work.
Part C: Find (a - b)(x). Show your work.
Part D: Find a[b(x)]. Show your work.
The value of the sum, difference and composite function a[b(x)] are 19x - 8, -5x + 28 and 84x - 136 respectively
Sum and difference of functionsGiven the following functions a(x) = 7x + 10 and b(x) = 12x - 18
Take the sum
(a+b)(x) = a(x) + b(x)
(a+b)(x) = 7x + 10 + 12x - 18
(a+b)(x) = 19x- 8
Take the difference
(a-b)(x) = a(x) - b(x)
(a-b)(x) = 7x + 10 - 12x + 18
(a-b)(x) = -5x + 28
For the composite function a[b(x)].
a(12x- 18) = 7(12x-18) - 10
a[b(x)] = 84x - 126 - 10
a[b(x)] = 84x - 136
Hence the value of the sum, difference and composite function a[b(x)] are 19x - 8, -5x + 28 and 84x - 136 respectively
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I dont know.. Please anwser this
If k and l are parralel, that means if you move them to each other, or shift k, you will get the same angle as ABC. Thus, it's still going to be 19 degrees.
(Look at the picture) help me
Answer:
i had this in rsm a long time ago, i think the answer(if it's an equation) should be:
6x + x = 7x
yeah sorry i forgot scream scream
Step-by-step explanation:
What is the sin B?
/21
B
5
2
sin (B) =
[?]
Answer:
Step-by-step explanation:
sin (B) = \(\frac{2}{5}\)
Joe, Eric, and Tyler are taking a road trip. Tyler drives twice as long as Eric, Joc drives 25 minutes morethan Eric. If they drove for a total of 145 minutes, find how long each person drove.
Let x represent the number of minutes that Eric drove.
Tyler drove twice as long as Eric. This means that the distance that Yyler drove is 2x
Joc drives 25 minutes more than Eric. This means that the distance that Joc drove is x + 25
If they drove for a total of 145 minutes, it means that
x + 2x + x + 25 = 145
4x + 25 = 145
4x = 145 - 25
4x = 120
x = 120/4
x = 30
Eric drove for 30 minutes
Tyler drove for 2 * 30 = 60 minutes
Joc drove for 330 + 25 = 55 minutes
PLS HELP WILL GIVE BRAINLIEST IF CORRECT (NO LINKS)
Identity m∠PKJ.
Answer:
measure of arc JL = 55°
measure of angle PKJ = 27.5°
Is this correct way to solve the problem?
5(2x-2)=30
10x-1030
10x=30+10
10x=40
(-10x)=(40)
x=-4
help me plz
Answer:
10x=40
x=40/10
x=4
4 is the answers, not -4
Step-by-step explanation:
pls mark as brainliest
The phone company Splint has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 380 minutes, the monthly cost will be $173. If the customer uses 570 minutes, the monthly cost will be $249.
A) Find an equation in the form
y
=
m
x
+
b
,
where
x
is the number of monthly minutes used and
y
is the total monthly cost of the Splint plan.
Answer:
y
=
B) Use your equation to find the total monthly cost if 942 minutes are used.
Answer: If 942 minutes are used, the total cost will be
dollars.
The solution of the given problem of equation comes out to be total cost for 942 minutes is $1044.
What is an equation?The similar symbol (=) is used in arithmetic equations to signify equality between two statements. It is shown that it is possible to compare various numerical factors by applying mathematical algorithms, which have served as expressions of reality. For instance, the equal sign divides the number 12 or even the solution y + 6 = 12 into two separate variables many characters are on either side of this symbol can be calculated. Conflicting meanings for symbols are quite prevalent.
Part A:
Given:
customer uses 380 minutes, the monthly cost will be $173.customer uses 570 minutes, the monthly cost will be $249.To find an equation,
Where x is number of monthly minutes.
and y is total monthly of splint plan.
So, equation is:
\(\rightarrow \text{y} =\text{mx} +\text{b}\)
For the first case:
\(\rightarrow\bold{173 = 380x + b}\)
Second case:
\(\rightarrow\bold{249= 570x + b}\)
Solve for x:
\(\rightarrow{173 - 380\text{x}=249- 570\text{x}\)
\(\rightarrow{-207=-321\)
\(\rightarrow \text{x} =\dfrac{321}{207}\)
\(\rightarrow \text{x} =\dfrac{107}{69}\)
\(\rightarrow \text{x} \thickapprox1.55\)
For value of b
\(\rightarrow 173 = 380(1.55) + \text{b}\)
\(\rightarrow 173 - 589 = \text{b}\)
\(\rightarrow -416 = \text{b}\)
Part B:
\(\rightarrow \text{y} = 942(1.55) - 416\)
\(\rightarrow \text{y} = 1460.1 - 416\)
\(\rightarrow \text{y} \thickapprox1044\)
Therefore, the solution of the given problem of equation comes out to be total cost for 942 minutes is $1044.
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PLEAS ANSWER ASAP I WILL GIVE BRIAINLYIST
The coordinates of the vertices of a polygon are (-3, 1), (-3, 3), (-1, 5), (2, 4), and (2, 1).
What is the perimeter of the polygon to the nearest tenth of a unit?
A. 16.0 units
B. 17.2 units
C. 15.4 units
D. 18.8 units
Using the coordinates of the vertices of a polygon (-3, 1), (-3, 3), (-1, 5), (2, 4), and (2, 1) the perimeter of the polygon is 16.0 units
How to find the perimeter of the polygonThe perimeter is calculated by summing the sides
The length of line in an ordered pair is calculated using the formula
d = √{(x₂ - x₁)² + (y₂ - y₁)²}
where
d = distance between the points
x₂ and x₁ = points in x coordinates
y₂ and y₁ = points in y coordinates
(-3, 1) and (-3, 3) =√{(-3 - -3)² + (3 - 1)²} = 2
(-3, 3) and (-1, 5) = √{(-1 - -3)² + (5 - 3)²} = 2√2
(-1, 5) and (2, 4) = √{(2 - -1)² + (4 - 5)²} = √10
(2, 4) and (2, 1) = √{(2 - 2)² + (1 - 4)²} = 3
(2, 1) and (-3, 1) = √{(-3 - 2)² + (1 - 1)²} = 5
The perimeter = 2 + 2√2 + √10 + 3 + 5
The perimeter = 15.9907
The perimeter = 16.0 units
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(100-30)x60 divided by 100
the general formula for the number of decibels corresponding to a change in sound intensity to i2 relative to the former intensity i1 is
Part A: β₂ = β₁ + 10 log₁₀ (f)
Part B: Δβ = 20 log10 (d₁/d₂)
This can be solved using the concept of sound intensity.
What is sound intensity?While amplitude is the distance between a wave's resting position and its crest, sound intensity is defined as the sound power per unit area. The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity. The watt per square metre is the SI measure of intensity that includes sound intensity.
Part A:
β₂ - β₁ = 10 log₁₀ (I₂/I₁)
given that : I₂ = f × I₁
hence, I₂/I₁ = f
so the equation becomes:
β₂ - β₁ = 10 log₁₀ (f)
β₂ = β₁ + 10 log₁₀ (f)
Part B:
P = Power by the source
I₁= intensity at distance d1 = P/(4πd₁²)
I₂ = intensity at distance d2 = P/(4πd₂²)
Δβ = β₂ - β₁ = 10 log₁₀ (I₂/I₁)
β₂ - β₁ = 10 log₁₀ ((P/(4πd₂²))/(P/(4πd₁²)))
Δβ = 10log₁₀ ((d₁/d₂)²)
Δβ = 20log₁₀ (d₁/d₂)
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25 pts will award brainliest
Question 14 (5 points)
(05.02 LC)
What is the value of x in the solution to the following system of equations? (5 points)
x − 2y = 2
3x + y = 6
Answer:
x = 2 and y = 0
Step-by-step explanation:
x - 2y = 2
3x + y = 6
using the substitution method, we solve the first equation for 'x' to get
x = 2y + 2
plug that into 'x' in the second equation
3(2y + 2) + y = 6
6y + 6 + y = 6
7y = 0
y = 0
find 'x':
3x + 0 = 6
x = 6/3
x = 2
Answer:
x=2
Step-by-step explanation:
Convert the following angle from degrees to radians. Express your answer in simplest form 345 ∘
well, since we know that there are 180° in π radians, how many degrees will it be in 345°?
\(\begin{array}{ccll} degrees&radians\\ \cline{1-2} 180&\pi \\ 345&x \end{array}\implies \cfrac{180}{345}~~ = ~~\cfrac{\pi }{x}\implies \cfrac{12}{23}~~ = ~~\cfrac{\pi }{x} \\\\\\ 12x=23\pi \implies x=\cfrac{23\pi }{12}\)
If △EFG ≅ △NML, what are the congruent corresponding parts?
Answer:
c
Step-by-step explanation:
100% sure and correct :) ❤️
In March 2018, the Buffalo Bills signed Star Lotulelei to a contract reportedly worth $50 million. Lotulelei’s salary (including bonuses) was to be paid as $17.1 million in 2018, $8.9 million in 2019, $7.5 million in 2020, and $8.25 million in 2021 and 2022. If the appropriate interest rate is 11 percent, what kind of deal did the defensive tackle sack? Assume all payments are paid at the end of each year.
Using simple interest, it is found that his salaries are as follows:
$18.981 million in 2018.$10.858 million in 2019.$9.975 million in 2020.$11.88 million in 2021.$12.7875 million in 2022.Simple InterestSimple interest is used when there is a single compounding per time period.
The amount of money after t years in is modeled by:
\(A(t) = A(0)(1 + rt)\)
In which:
A(0) is the initial amount.r is the interest rate, as a decimal.In this problem, considering the time from the beginning of 2018, and the interest rate of r = 0.11, his salaries for each year are given by:
\(A(1) = 17.1[1 + 0.11(1)] = 18.981\)
\(A(2) = 8.9[1 + 0.11(2)] = 10.858\)
\(A(3) = 7.5[1 + 0.11(3)] = 9.975\)
\(A(4) = 8.25[1 + 0.11(4)] = 11.88\)
\(A(5) = 8.25[1 + 0.11(5)] = 12.7875\)
Hence, his salaries are as follows:
$18.981 million in 2018.$10.858 million in 2019.$9.975 million in 2020.$11.88 million in 2021.$12.7875 million in 2022.More can be learned about simple interest at https://brainly.com/question/25296782
What is sin 30°?
60°
2
2
1
90°
30°
3
According to the property of cofunctions, \($\sin 30^{\circ}$\) exists equivalent to
\($\cos 60^{\circ} \cdot \sin 30^{\circ}=1 / 2$\).
What is cofunction?A trigonometric function whose value for the complement of an angle exists equivalent to the value of a given trigonometric function of the angle itself the sine exists the cofunction of the cosine.
According to the property of cofunctions, \($\sin 30^{\circ}$\) exists equivalent to
\($\cos 60^{\circ} \cdot \sin 30^{\circ}=1 / 2$\).
Therefore, the correct answer is option B. 1/2.
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Mr. Wells tells his class of 24 that when they have completed the assignment, they may play online math games. At the end of class, 40% of the class is playing online math games. Approximately how many students still need to complete their assignment
Help plz
Answer:
Approximately 14-15
Step-by-step explanation:
This is because 60 percent are not playing games, meaning they haven’t completed their assignment. You then just find 60 percent of 24(the total). That is 14.4 so you round it because you can’t have half of a person, it needs to be a whole number.
solve the systems of equations by graphing:y=-2x+1x+2y=-4Solution: Graph:
(2, -3)
Explanation:y = -2x + 1 ...equation 1
x + 2y = -4 ...equation 2
To determine the points to plot, we'll assign values for x inorder to get values for y in eqach of the equations:
let x = 0, 1, 2, 3
y = -2x + 1
when x = 0
y = -2(0) + 1 = 1
when x = 1
y = -2(1) + 1 = -1
when x = 2
y = -2(2) + 1 = -3
when x = 3
y = -2(3) + 1 = -5
x+2y=-4
when x = 0
0 + 2y = -4
y = -2
when x = 1
1 + 2y = -4
y = -5/2 = -2.5
when x = 2
2 + 2y = -4
y = -3
when x = 3
3 + 2y = - 4
y = -7/2 = -3.5
Plotting the graphs:
The solution of the system of equations is the point of intersection of both graphs.
The graphs meet at (2, -3).
Hence, the solution (x, y) = (2, -3)
1. The height of a right triangular prism is 1 5/6 inches. Each side of the triangular base measures 10 inches, and the height of the base is 8 2/3 inches. The triangular prism is placed atop a cube whose side measures 10 inches so that one of the triangular prism’s bases lies completely on one side of the cube.
What is the surface area of the solid formed?
100 POINTS!!! IF YOU DRAW AN ACCURATE DIAGRAM TOO, YOU WILL BE AUTOMTIC BRAINLIEST!!!!!!
If the height of a right triangular prism is 1⁵/₆ inches. The surface area of the solid formed is 598.33 in².
What is surface area?The surface area of a solid object is a measure of the total area that the surface of the object occupies.
A three-dimensional solid form with six faces, including rectangular bases, is called a rectangular prism. A rectangular prism also refers to a cuboid. A cuboid and a rectangular prism have the same cross-section.
First step:-
Right triangular prism=1⁵/₆ inches= 11/6 inches
Height of the base=8²/₃ inches = 26/3 inches
Second step:-
Surface area = 5(10× 10) + (0.5÷ 10 × 26/3) + 3(10× 11/6)
Surface area = 5(100) +43.33+ 3(18.33)
Surface area = 500) +43.33 + 55
Surface area = 598.33 in²
Therefore the surface area of the solid formed is about 598.33 in²
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What is the value of p?
Step-by-step explanation:
a 43
hope it helps
your welcome
two gongs strike at intervals of 90 and 60 minutes respectively.At what time will they strike together again if they start simultaneously at 12 noon
Both the gongs will strike together at 3 pm.
Given,
Two gongs strike at intervals 90 and 60 minutes respectively.
Use LCM to find at what time they will strike together
Using prime factorization:
LCM of (60,90)=\(2^2*3^2*5=4*9*5=180\)
They will strike together after 180 minutes i.e. 3 hours
Hence, if they start simultaneously at 12 noon then they will strike together again at 3 pm
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1. A. What is the formula for the Pythagorean Theorem? (1 point)
B. Find the missing leg of the triangle using the Pythagorean Theorem. Remember that drawings may not be to scale (Round to the nearest tenth).
Show your work. (4 points)
20 ft
18 ft
x
Answer:
side 1^2 + side 2 ^2 = hypotenuse ^ 2
18^2 + 20^2 = hypotenuse^2
324 + 400 = 724
hypotenuse^2 = 724
hypotenuse = 26.9072480941474
hypotenuse = 26.9
Step-by-step explanation:
x is directly proportional to y. When x = 4, y = 7. Work out the value
of y when x = 12
Answer:
y = 21
Step-by-step explanation:
When x is directly proportional to y:
When x increases, y also increases.
In this case, it is so you write,
1. Write down the formula: y=kx
k being the constant.
Let's use "When x = 4, y = 7" to work out the constant.
2. Substitute the 'when' values: 7=k×4
3. Rearrange to find the constant: 7÷4=k
4. Find k: k=1.75
Now let's see the new problem, 'what is y when x = 12'.
5. Substitute the values now but keep the constant: y = 1.75 × 12
6. Rearrange if needed.
7. Find the missing value: y = 21
Hope this helped and if you require further assistance from me please comment below! :)
Ps: If it was inversely proportional then the formula would be y = k / x
with k still being the constant.
Graph the line with a slope of 3 that passes through (4,1)
Given that the slope is m=3 and that the line passes through the point (4,1), we can use the point-slope formula to find the equation of the line:
\(\begin{gathered} (x_1,y_1)=(4,1) \\ m=3 \\ y-y_1=m(x-x_1) \\ \Rightarrow y-1=3(x-4)=3x-12 \\ \Rightarrow y=3x-12+1=3x-11 \\ y=3x-11 \end{gathered}\)Now we can easily graph the line if we make y=0 and x=5
\(\begin{gathered} if\colon x=5 \\ \Rightarrow y=3\cdot5-11=15-11=4 \\ y=-11 \\ if\colon y=0 \\ \Rightarrow0=3x-11 \\ \Rightarrow3x=11 \\ \Rightarrow x=\frac{11}{3} \end{gathered}\)Then the graph is the following:
Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.6 years with a standard deviation of 0.9 years. If a sampling distribution is created using samples of the ages at which 49 children begin reading. What would be the mean of the sampling distribution?
Answer:
The value is \(\mu_{x} = 5.6 \ years\)
Step-by-step explanation:
From the question we are told that
The population mean is \(\mu = 5.6 \ years\)
The standard deviation is \(\sigma = 0.9 \ years\)
The sample size is n = 49
Generally given that the sample size is large enough, the sampling distribution created using the samples of the ages at which 49 children begin reading is equal to the population mean
i.e
\(\mu_{x} = \mu\)
=> \(\mu_{x} = 5.6 \ years\)
Can someone help !!
2. What is the probability that you select a Jack given that it is a Club?
P(Jack∣Club)=
3. What is the probability that you select a Club given that it is a Jack?
P(Club∣Jack)=
4. What is the probability that you select a card that is NOT a Jack given that it is NOT a Club?
P(NotJack∣NotClub)=
5. What is the probability that you select a card that is NOT a Club given that is it NOT a Jack?
The probability that you select a Jack given that it is a Club P(Jack∣Club) is 1/13.
The probability that you select a Club given that it is a Jack is P(Club∣Jack) is 1/4.
The probability that you select a card that is NOT a Jack given that it is NOT a Club,P(NotJack∣NotClub) is 47/38
The probability that you select a card that is NOT a Club given that is it NOT a Jack is 38/47
The probability that you select a Jack given that it is a Club P(Jack|Club):
There are 4 Jacks in a deck (one for each suit), and since we are given that the selected card is a Club, we only need to consider the 13 cards in the Club suit.
So, the number of favorable outcomes is 1 (the Jack of Clubs), and the total number of possible outcomes is 13 (the number of cards in the Club suit)
P(Jack|Club) = 1 / 13
The probability that you select a Club given that it is a Jack
P(Club|Jack):
P(Club|Jack) = Number of favorable outcomes / Total number of possible outcomes
P(Club|Jack) = 1 / 4
The probability that you select a card that is not a Jack given that it is not a Club
P(NotJack|NotClub):
The number of cards that are not Jacks is 52 - 4 = 48 (since there are 4 Jacks in the deck), and the number of cards that are not Clubs is 52 - 13 = 39 (since there are 13 cards in the Club suit).
P(NotJack|NotClub) = Number of favorable outcomes / Total number of possible outcomes
P(NotJack|NotClub) = (48 - 1) / (39 - 1)
=47/38
P(NotClub|NotJack) = (39 - 1) / (48 - 1)
=38/47
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