Answer:
________________________________
________________________________
igs those are parallel lines LOL
I need help with this I don't understand this math
The exponential regression equation is y = 172.21(0.99)ˣ and at x = 60 minutes y = 94.22 degree Fahrenheit and at x = 240 minutes y = 15.43 degree Fahrenheit.
What is correlation?It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
\(\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}\)
We have data shown in the table:
We can find the exponential regression equation using the data shown.
\(\rm y = ab^x\)
After calculating from the data:
a = 172.21 and b = 0.99
\(\rm y = 172.21(0.99)^x\)
The correlation coefficient will be:
r = -0.99
The range will be all real numbers.
The domain will be y > 0
As we can see in the graph x ∈R and y>0
After an hour,
Plug x = 60 minutes in the exponential regression equation:
\(\rm y = 172.21(0.99)^{60}\)
y = 94.22 degree Fahrenheit
After 4 hours, plug x = 240
\(\rm y = 172.21(0.99)^{240}\)
y = 15.43 degree Fahrenheit
Similarly, we can find any data from the exponential regression equation.
Thus, the exponential regression equation is y = 172.21(0.99)ˣ and at x = 60 minutes y = 94.22 degree Fahrenheit and at x = 240 minutes y = 15.43 degree Fahrenheit.
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The length of a rectangle is shown below:
If the area of the rectangle to be drawn is 12 square units, where should points C and D be located, if they lie vertically below the line that connects B and A, to make this rectangle? (1 point)
A. C(−3, −2), D(1, −2)
B. C(−3, −1), D(1, −1)
C. C(−3, −4), D(1, −4)
D. C(−3, −5), D(1, −5)
Answer:
A - C(-3, -2), D(1, -2)
Step-by-step explanation:
7/10,3/5,9/11,1/2, who’s Is more
Answer:
7/10 = .70
3/5 = .60
9/11 = .81
1/2 = .50
9/11 is the most
Can someone please help
Answer:
Hbecause a right angle's base is on the bottom
Step-by-step explanation:
sub to Pen Paper
Same directions as question #1
Sn = ( -1 )n + 1
The sum of the sequence based on the function Sn = ( -1 )n + 1 will be -6.
How to depict the information?The formula for finding the nth term in an arithmetic sequence given as:
= a + (n - 1)d
Here, Sn is given as ( -1 )n + 1. This is used to illustrate the sum in the sequence. Based on the function given, let's assume that n = 5. Therefore, the 5th term will be:
= (-1)n + 1
= (-1)5 + 1
= (-1)6
= -6
Here is the complete question:
Find the 5th term of a sequence given the function Sn = ( -1 )n + 1.
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4y+8=6y+2. HELP RN PLS
Answer: Y=3
Step-by-step explanation:
4y + 8= 6y + 2
4y +8 - 8 = 6y + 2 - 8
4y = 6y - 6
4y - 6y = 6y - 6 -6y
-2y = -6
Y = 3
During science class, groups measure out different volumes of vinegar. The line plot below shows the amount of vinegar used by 12 1212 groups, rounded to the nearest 1 2 mL 2 1 mLstart fraction, 1, divided by, 2, end fraction, start text, space, m, L, end text. 4 4 4 1 2 4 2 1 5 5 5 1 2 5 2 1 6 6 6 1 2 6 2 1 7 7 7 1 2 7 2 1 8 8 A line plot labeled 4 to 8 with tick marks every one-half unit labeled with a tick mark and number. Above tick mark four and one-half there is a column of two dots. Above tick mark 5 there is a column of three dots. Above tick mark six and one-half there is a column of two dots. Above tick mark 7, there is a column of two dots. Above tick mark seven and one-half, there is a column of three dots. What is the total amount of vinegar, in milliliters, used by the 3 33 groups that used the most? mL mL
Answer:
22 1/2
Step-by-step explanation:
Elmo made a 65 potholders each pot holder cost him $1.65 to make if he sells each pot holder for $2.12 how many profit will he make?
Answer:
Step-by-step explanation:
$2.12 - $1.65 = $0.47
$0.47 x 65 = $30.55 profit.
This is an exercise in the formula to calculate the profits obtained from the sale of a product, it is an essential tool in the management of any business. By knowing the profits obtained from the sale of a product, business owners and managers can make informed decisions and adjust their business strategies to maximize their profitability.
Profit is calculated by subtracting the total costs of production from the total revenue earned from the sale of a product. Total production costs include not only the direct costs associated with manufacturing the product, but also indirect costs, such as advertising and marketing costs, the cost of packaging materials, and other overhead.
The total income obtained from the sale of a product is the product of the number of units sold by the sale price per unit. It is important to remember that the selling price per unit must be sufficient to cover both the direct and indirect costs of production, and to provide a reasonable profit.
Once the profit earned from the sale of a product has been calculated, business owners and managers can use this information to improve their profitability. If profits are low, they might consider lowering production costs, raising the selling price, or finding ways to sell more units. On the other hand, if profits are high, they might consider increasing their investment in advertising and marketing to attract more customers and expand their business.
In addition, profit calculation can also help business owners and managers assess the feasibility of launching a new product or expanding into new markets. By calculating total production costs and potential total revenue, they can determine if the new product or market is profitable and make informed decisions about whether to proceed with the launch or expansion.
In order for us to calculate Elmo's profit, we need to determine how much he spent to make the potholders and how much he will earn from selling them.
The total cost of making the handles is the product of the number of handles times the cost per unit:
Total cost = 65 potholders × $1.65/potholder = $107.25
The total revenue from selling the handles is the product of the number of handles times the selling price per unit:
Total revenue = 65 potholders x $2.12/potholder = $137.8
Elmo's profit is the difference between total revenue and total cost:
Profit = Total Revenue - Total Cost
Profit = $137.8 - $107.25 = $30.55
Profit = $30.55
Elmo will make a profit of $30.55 by selling 65 potholders.
plsssssssssssssssssssss help me i need to get these right so i can play roblo.x pls tell me how you got the answer
Answer:
675 mm²
Step-by-step explanation:
base = 15 x 15 = 225 mm²
4 sides = 4(15)(15)(0.5) = 450 mm²
450 + 225 = 675 mm²
Please answer with picture thank you so much!
Answer: 28
Step-by-step explanation: In this problem, we're given information about the parts of a segment and we're asked to find the value of x.
To find the value of x, we can use the segment addition postulate.
Looking at the diagram, it should make since that RS + ST = RT.
So 4x + 3x + 11 = 60 or 7x + 11 = 60.
Subtracting 11 from both sides and solving for x, we get x = 7.
Since RS is 4x, we can substitute a 7 in for x to get 4(7) or 28.
Option (c) 28 is your correct answer.
Given:-In a line given three coordinates point R, S and T.Where, the distance RS = 4x , ST = 3x + 11 and the total distance RT = 60 (Given).To find:-The distance between RS = ?➤ Solution:-RS + ST = RT
substitute the value in equation
=> 4x + 3x + 11 = 60
=> 7x + 11 = 60
11 will move to RHS to sub from 60 to get 49.
=> 7x = 60 - 11
=> 7x = 49
=> x = 49÷7
∴ x = 7
Now, finding distance between RS by putting 7 in x value.
Distance between RS = 4x
= 4(7)
= 28
Therefore, the distance between RS is 28.
John has a bag of different colored marbles. He has 6 red marbles, 3 blue marbles, 7 yellow marbles, and 5 green marbles If John reaches into the bag and randomly pulls out a marble, wh probability that the marble will be blue? (If necessary, round to the nearest tenth.) O A 14.3% OB 28 6% O с 30 0% o D 85 7%
Answer:
a. 14.3
Step-by-step explanation:
6+3+7+5 = 21
The blue marbles is 3.
3/21 = 14.28%
round it up = 14.3%
Answer:
A 14.3%
Step-by-step explanation:
Divide the amount of blue to the total amount of marbles. (3÷21)
Multiply that (0.14) by 100
=14.29
Round up to 14.3%
Answer is A
Superman needs to save lois from the clutches of lex luthor. It take superman 5 seconds to get to Lois who is 210 feet away. What is supermans rate?
Answer:
42 ft/s
Step-by-step explanation:
if superman travels 210 feet in 5 seconds, he will travel a fifth of 210 ft in 1 second
a fifth of 210ft is 210/5=42
hence 42ft/s is his rate.
-8/9 + (-2)/57
find the absolute value of the following rational number
The absolute value of the Rational number -474/513 is 474/513.
To find the sum of the rational numbers -8/9 and -2/57, you need to have a common denominator. The least common multiple (LCM) of 9 and 57 is 513. So, you can rewrite the fractions with a common denominator:
-8/9 = (-8/9) * (57/57) = -456/513
-2/57 = (-2/57) * (9/9) = -18/513
Now, you can add the fractions:
-456/513 + (-18/513) = (-456 - 18)/513 = -474/513
To find the absolute value of the rational number -474/513, you simply ignore the negative sign and take the value as positive:
| -474/513 | = 474/513
Therefore, the absolute value of the rational number -474/513 is 474/513.
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Whenever Deven and Laura owe each other money, they "pay" each other using stickers. They've agreed that a Harry Potter sticker is worth 49 dollars and a Twilight sticker is worth 35 dollars. They can even use stickers as "change" if one person overpays the other. For example, if Deven owes Laura 189 dollars, he can give her 6 Harry Potter stickers ($6 \cdot 49 = 294$ dollars), and she can return 3 Twilight stickers ($3 \cdot 35 = 105$ dollars). This trade is like a transfer of $294-105=189$ dollars. What is the smallest positive debt, in dollars, that can be paid off using sticker trading?
The smallest positive debt that can be paid off using sticker trading is $7$ dollars.
To find the smallest positive debt that can be paid off using sticker trading, we need to consider the values of the stickers (in dollars) and find the smallest positive amount that can be reached through a combination of these values.
Given that a Harry Potter sticker is worth $49 and a Twilight sticker is worth $35, we can approach this problem using the concept of the greatest common divisor (GCD) of these two values.
The GCD of $49$ and $35$ is $7$. This means that any multiple of the GCD can be represented using these sticker values.
In other words, any positive multiple of $7$ dollars can be paid off using sticker trading.
Therefore, the smallest positive debt that can be paid off using sticker trading is $7$ dollars.
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solve the initial value problem and determine the interval in which the solution is valid hint: to find the interval of definition, lookfor points where the integral curve has a vertical tangent
The solution to the equation for the initial value problem is y(x) =\((1 + (2x^3/3 - x^2 + x))/((x^3 - 3x^2 + 6x - 6)^(1/3))\). It is valid for all x ≥ 0.
First, solve for y': \(1 + 3x^2*y^2 - 6y = 0.\)
Next, divide both sides by \(3x^2: y^2 - 2y/x + 1/x^2 = 0.\)
Use the quadratic formula to solve for y: y = \((2/x +- sqrt [4/x^2 - 4/x^3])/2.\)
Now, plug in y(0) = 1 to obtain the equation \((2/x + sqrt [4/x^2 - 4/x^3])/2 = 1.\)
Solving this equation, x = 0 and x = 3.
Next, integrate both sides of the original equation to get y(x) = \((1 + (2x^3/3 - x^2 + x))/((x^3 - 3x^2 + 6x - 6)^(1/3)).\)
Finally, the solution to the initial value problem is valid for all x ≥ 0.
The complete question: solve the initial value problem
y'=(1+3x2)/(3y2−6y),y(0)=1
and determine the interval in which the solution is valid. Hint: To find the interval of definition, look for points where the integral curve has a vertical tangent.
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If csc(x) = 2, for 90° < x < 180°, then
sin(x/2)=
cos(x/2)=
tan(x/2)=
Perform the following mathematical operation, and report the answer to the appropriate number of significant figures.
1204.2 + 4.72613 = [?]
The answer is not 1208.92613
The result of the addition operation of 1204.2 + 4.72613 is approximately 1208.93.
What is an addition operation?An addition operation involves two addends added together to result in a number called the sum.
The addition operation is one of the four basic mathematical operations, including subtraction, division, and multiplication.
Mathematical operations combine numbers, variables, and values with mathematical operands to solve mathematical questions.
1204.2 + 4.72613
= 1208.92613
= 1208.93
Thus, the addition of 1204 and 4.72613 yields a total of 1208.93 approximately.
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Which equation is represented by the graph?
Answer:
The choose D. y=|x|–1
Your choice is right
I hope I helped you^_^
Answer all of the following questions above. I will give brainliest to the correct answer!
Answer:
40
112
2n^2 + 2n C
Step-by-step explanation:
a)The correct formula is 2n^2 + 2n
So for n =4, the answer is
2*4^2 + 2*4
2*16 + 8
32 + 8
40
b) For the seventh answer you get
2 * 7^2 + 2*7
2*49 + 14
98 + 14
112
c) The correct formula to use is
2n^2 + 2n See diagrams for the number of matchsticks to be used.
n 2n^2 + 2n
1 2*1^2 + 2*1
1 2 + 2
1 4
2 2*2^2 + 2*2
2 2* 4 + 4
2 8 + 4
2 12
3 2*3^2 + 2*3
3 18 + 6
3 24
What an extremely interesting sequence. I'll bet not one person in 100 could get this without the match stick diagrams. I'm sorry I didn't read the question more carefully.
212.809 rounded to nearest hundreth
Answer:
I think is 213 or 212.8
Step-by-step explanation:
Because 9 round to 10
810 rounds to 800
and if is nesesary 212.800 rounds to 213.
But I'm sure is 212.8, you choose.
Vertex of y= (x +4) ^2+ 2
Answer:
the vertex is (-4,2)
Step-by-step explanation:
A man ordered 4 times as many boxes of ballpoint pens as boxes of felt-tip pens. Ballpoint pens cost $4.34 per box, and felt-tip pens cost $3.41. If the man's order of pens totaled $83.08, how many boxes of each type of pen did he buy?
What’s the graph to t/3 - 1 > -3
Answer: The answer is C
Step-by-step explanation: This is because the equation has a greater than or equal to sign (≥). This mean that there will be a closed dot. Also, when it comes to inequalities, the sign points to where the line will be drawn, (greater than is to the right and less than is to the left), which indicates that the answer is C
A spherically shaped hot air balloon has a
diameter of about 27 meters when fully inflated.
What is the volume of the hot air balloon when it
is fully inflated?
Answer: 7725.5775
Step-by-step explanation:
d=27
r=d/2=27/2=13.5
the volume of the spherical balloon= 3.14*r^3
= 3.14*(13.5)^3
= 7725.5775
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solve 3(x+4)-11=28 please
Answer:
\(\huge\boxed{\sf x = 9}\)
Step-by-step explanation:
Given equation:3(x + 4) - 11 = 28
Add 28 to both sides3(x + 4) = 28 + 11
3(x + 4) = 39
Distribute3x + 12 = 39
Subtract 12 from both sides3x = 39 - 12
3x = 27
Divide both sides by 3x = 27/3
x = 9\(\rule[225]{225}{2}\)
Which is the equation of the circle that has a diameter with endpoints located at (0, –3) and (6, 5)?
(x – 6)^2 + (y – 5)^2 = 100
(x – 3)^2 + (y – 1)^2 = 25
x^2 + (y + 3)^2 = 100
(x – 5)^2 + y^2 = 25
The equation of the circle that has a diameter with endpoints located at (0, –3) and (6, 5) is;
(x – 3)² + (y – 1)² = 25The midpoint of the diameter of a circle is it's center.
As such; the coordinates of its center are;
x = (0 + 6)x = 3y = (-3 + 5)/2y = 1The coordinates of the center are then; (3, 1)
The radius of a circle is half the length of the diameter;
Radius, r = d/2where; d = √(6-0)² + (5-(-3))²d = √36 + 64d = √100d = 10Therefore, radius, r = 10/2 = 5.
Therefore, the equation of the circle usually takes the form;
(x -f)² + (x -g)² = r²In this scenario; the equation is;
(x – 3)² + (y – 1)² = 25.Read more;;
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Mr. Gupta gave his students a quiz with three questions on it. Let
�
XX represent the number of questions that a randomly chosen student answered correctly. Here is the probability distribution of
�
XX along with summary statistics:
�
=
# correct
X=# correctX, equals, start text, \#, space, c, o, r, r, e, c, t, end text
0
00
1
11
2
22
3
33
�
(
�
)
P(X)P, left parenthesis, X, right parenthesis
0.05
0.050, point, 05
0.20
0.200, point, 20
0.50
0.500, point, 50
0.25
0.250, point, 25
Mean:
�
�
=
1.95
μ
X
=1.95mu, start subscript, X, end subscript, equals, 1, point, 95
Standard deviation:
�
�
≈
0.8
σ
X
≈0.8sigma, start subscript, X, end subscript, approximately equals, 0, point, 8
Mr. Gupta decides to score the tests by giving
10
1010 points for each correct question. He also plans to give every student
5
55 additional bonus points. Let
�
YY represent a random student's score.
What are the mean and standard deviation of
�
YY?
The mean score of a random student (YY) is 574.5. the standard deviation of the random student's score (YY) is 8.
How to answer the aforementioned questionGiven:
- Each correct question is worth 10 points.
- Every student receives an additional 555 bonus points.
Let's calculate the mean and standard deviation of YY:
Mean of YY:
The mean score, denoted as μY, can be calculated using the mean of XX (μX) and the scoring scheme:
μY = μX * 10 + 555
Substituting the value of μX from the given information:
μY = 1.95 * 10 + 555
μY = 19.5 + 555
μY = 574.5
Therefore, the mean score of a random student (YY) is 574.5.
Standard Deviation of YY:
The standard deviation of YY, denoted as σY, can be calculated using the standard deviation of XX (σX) and the scoring scheme:
σY = σX * 10
Substituting the value of σX from the given information:
σY = 0.8 * 10
σY = 8
Therefore, the standard deviation of the random student's score (YY) is 8.
Complete question: Mr. Gupta gave his students a quiz with three questions on it. Let X represent the number of questions
that a randomly chosen student answered correctly. Here is the probability distribution of X along with
summary statistics:
0
1
2
2.
3
X = # correct
P(X)
0.05
0.20
0.50
0.25
Mean: Hex = 1.95
Standard deviation: Ox 0.8
Mr. Gupta decides to score the tests by giving 10 points for each correct question. He also plans to give
every student 5 additional bonus points. Let Y represent a random student's score.
What are the mean and standard deviation of Y?
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PLEASE HELP AHH TYY 1. Manzanita berries look like little apples. Manzanita juice is sold in cylindrical cans. A typical can of manzanita juice has a height of 4.9 inches and diameter of 2.6 inches. Find the surface area of the can. Use 3.14 for π. Use the formula for surface area of a cylinder, А 2πг² + 2лrh.
r= radius h=height.
50.62 square inches is the surface area of a cylinder
What is Three dimensional shape?a three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.
Given that Manzanita berries look like little apples. Manzanita juice is sold in cylindrical cans.
A typical can of manzanita juice has a height of 4.9 inches and diameter of 2.6 inches.
We need to find the surface area of the can.
Height of can = 4.9 inches
Diameter =2.6 inches
Radius=2.6/2=1.3
Surface area=2πг² + 2лrh.
=2πг(r+h)
=2×3.14×1.3×(1.3+4.9)
=8.164(6.2)
=50.62 square inches
Hence, 50.62 square inches is the surface area of a cylinder
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negative nine decreased by 3 times a number.; the difference of 3 and a number algebraic expression; the difference of three times a number and eight; the difference of 3 times a number x and 12 is -24; the difference of three times a number and 4 is -19; the difference of three times a number and 4 is −19; 2 times the difference of x and 3; the quotient of x and 3
a. negative nine decreased by 3 times a number
negative nine is -9.
Let a certain number be ' p '
3 times a certain number is 3p.
Hence, we can write this equation as -9 - 3p.
b. the difference between 3 and a number
Let a certain number be ' p '
Hence, we can write this equation as 3 - p.
c. the difference between three times a number and eight
Let a certain number be ' p '
3 times a certain number is 3p.
Hence, we can write this equation as 3p - 8.
d. the difference of 3 times the number x and 12 is -24
3 times a number x is 3x.
Hence, we can write this equation as 3x - 12 = 24.
e. the difference between three times a number and 4 is -19.
Let a certain number be ' p '
3 times a certain number is 3p.
Hence, we can write this equation as 3p - 4 = -19.
f. 2 times the difference between x and 3.
the difference between x and 3 is (x - 3).
2 times (x - 3) is 2(x - 3).
Hence, this equation is 2(x - 3).
g. the quotient of x and 3.
The quotient is obtained after the division of two numbers.
Hence, this equation can be written as x/3.
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The complete question is -
Interpret the following algebraic expressions.
a. negative nine decreased by 3 times a number
b. the difference between 3 and a number
c. the difference between three times a number and eight
d. the difference of 3 times the number x and 12 is -24
e. the difference between three times a number and 4 is -19.
f. 2 times the difference between x and 3.
g. the quotient of x and 3.
Please help!!! I will mark best answer!
Solve the equation for the indicated variable. *
m
4) -=n+p, for x
n+ P
A) x =
m
B) x= -mn + mp
C) X=-m+n+ P
m
D) x =
n+ P
Answer:
D
Step-by-step explanation: