The regression equation is calculated as: ŷ = -0.99299X + 26.39918
How to solve for the regression equationWe have these data for the x axis
12 15 20 22 15 8 6 17
These are the values for the y axis
17 15 6 7 6 18 21 7
Sum of X = 115
Sum of Y = 97
Mean X = 14.375
Mean Y = 12.125
Sum of squares (SSX) = 213.875
Sum of products (SP) = -212.375
Regression Equation = ŷ = bX + a
b = SP/SSX = -212.38/213.88 = -0.99299
a = MY - bMX = 12.13 - (-0.99*14.38) = 26.39918
ŷ = -0.99299X + 26.39918
These values where inputted into a regression analysis calculator and the output is ŷ = -0.99299X + 26.39918
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Fthis other one but this is cheesing hard
A is zero
B) D
C) x= - 1 & x= 4
Hope this helps!
What is the domain of the following relation?
{(-3, -8), (-2, 9), (1, -1), (5,3)}
O {-8, -1, 3, 9}
O {-3, -2, 1, 5}
O (-3, -8)
O {-8, -3, -2, -1, 1, 3, 5, 9}
Answer: {-3, -2, 1, 5}
Step-by-step explanation:
The domain is the set of x-values.
6x^2+18x=0 rounded the nearest 10th
By applying algebraic handling and the concept of polynomials, we conclude that the quadratic equation 6 · x² + 18 · x = 0 has two roots: 0, - 3.
How to solve a quadratic equation
In this question we must apply algebraic rules to find the roots of a quadratic equation, the roots are the values of the equation such that is equal to zero. Now we present the complete procedure:
6 · x² + 18 · x = 0
6 · x · (x + 3) = 0
x = 0 ∨ x = - 3
By applying algebraic handling and the concept of polynomials, we conclude that the quadratic equation 6 · x² + 18 · x = 0 has two roots: 0, - 3.
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The lines shown below are perpendicular.
[tex]\Large\maltese\underline{\textsf{Our problem:}}[/tex]
The lines shown below are perpendicular. Is this statement true or false?
[tex]\Large\maltese\underline{\textsf{This problem has been solved!}}[/tex]
In order for a pair of lines to be perpendicular, they must intersect at a [tex]\bf{90^\circ}[/tex] angle. (a right angle)
[tex]\bf{Since\;the\;green\;line\;and\;the\;red\;one\;intersect\;at\;a\;right\;angle,}\\they\;are\;perpendicular.\\\\Hope\;you\;will\;have\;a\;fantabulous\;day!}[/tex]
[tex]\rule{300}{1.7}[/tex]
[tex]\boxed{\bf{aesthetic \not101}}[/tex]
Robert has 3/4 of a candy bar like he wants to share it with himself and two friends what fraction of the candy bar will each person get?
Answer:
significa que 1 barra de chocolate dividida entre 4 amigos es igual a 1 4. Por lo tanto, cada persona recibe 1 4 de la barra”. 6.
Step-by-step explanation:
Answer:
3/4 divided by 3 is 0.25
Step-by-step explanation:
We know that he has 3/4 of a candy bar and he wants to share it with himself plus 2 people.
The expression 3/4 divided by 3 represents this.
To change division to multiplication we use the reciprocal.
3/4 times 1/3 is 0.25.
Hope this helps. (:
which number would be equivalent to the expression: 3 times 4 to the second power plus 6 divided by 2
The given expression is equivalent to the number 147.
We have given that,
[tex](3\times4)^2+\frac{6}{2}[/tex]
We have to determine the value of the given expression.
What is the expression?
An expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
[tex]=(12)^2+\frac{6}{2} \\=144+3\\=147[/tex]
Therefore the given expression is equivalent to the number 147.
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Question
Find the x- and y-intercepts of the parabola y
=
=-3x²
-
10x 10.
-
Answer:
-100/3,0
Step-by-step explanation:
substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
if that makes sense Hope this helps pls brainliest have a nice day :>
Answer:
100- 3X
Step-by-step explanation:
SLAY
Work out the height of this
triangle with base, b = 4.9mm
and area, A = 108.29mm².
Answer: 44.2
Step-by-step explanation:
108.29*2/4.9=44.2
Pls help! Geometry!
How long is the other side?
Answer: 18 feet
Step-by-step explanation:
The area of a rectangle is given by [tex]A=lw[/tex], which means that the length of the unknown side is [tex]\frac{216}{12}=18[/tex] feet.
QUESTION IS DOWN BELOW
Using proportions, the ratios are given as follows:
a) 9:196.
b) 27:2744.
c) 3:14.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Considering the standard ratio of 3:14 units, we have that:
The area is given in units squared, hence the ratio will be of [tex]\left(\frac{3}{14}\right)^2 = \frac{9}{196}[/tex].The volume is given in cubic units, hence the ratio will be of [tex]\left(\frac{3}{14}\right)^3 = \frac{27}{2744}[/tex]. The width is also given in units, hence the ratio is also of 3:14.More can be learned about proportions at https://brainly.com/question/24372153
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Find the angle [OA] makes with the positive x-axis if the x-coordinate of the point A on the unit circle is 0.222
By using the concepts of unit circle and trigonometric functions, we find that the angle OA, whose x-coordinate is 0.222, has a measure of approximately 77.173°.
How to find an angle in an unit circle
Unit circles are circles with radius of 1 and centered at the origin of a Cartesian plane, which are used to determine angles and trigonometric functions related to them. If we use rectangular coordinate system and the definition of the tangent function, we find that the angle OA is equal to:
[tex]\tan \theta = \frac{\sqrt{1 - x^{2}}}{x}[/tex]
[tex]\tan \theta = \frac{\sqrt{1-0.222^{2}}}{0.222}[/tex]
tan θ ≈ 77.173°
By using the concepts of unit circle and trigonometric functions, we find that the angle OA, whose x-coordinate is 0.222, has a measure of approximately 77.173°.
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Determine the slope of a line that is perpendicular to the equation 3x + 6y =18
Rewriting the equation of the given line in slope-intercept form,
[tex]3x+6y=18\\\\x+2y=6\\\\2y=-x+6\\\\y=-\frac{1}{2}x+3[/tex]
This means the slope of the given line is -1/2.
As perpendicular lines have slopes that are negative reciprocals, the answer is 2.
[tex]\Large\maltese\underline{\textsf{A. What is Asked}}[/tex]
Determine the slope of the line perpendicular to 3x+6y=18
[tex]\Large\maltese\underline{\textsf{B. This problem has been solved!}}[/tex]
[tex]\bf{\dfrac{3}{6}x+\dfrac{6}{6}y=\dfrac{18}{6}[/tex] | dividing the ENTIRE equation by 6, to make it easier to write in y=mx+b form
[tex]\bf{\dfrac{1}{2}x+y=3}[/tex] | subtract 1/2 x
[tex]\bf{y=-\dfrac{1}{2}x+3[/tex].
[tex]\cline{1-2}[/tex]
Now, perpendicular lines' slopes are opposite inverses of each other.
The opposite inverse of -1/2 is
= 2
[tex]\cline{1-2}[/tex]
[tex]\bf{Result:}[/tex]
[tex]\bf{=2}[/tex]
[tex]\LARGE\boxed{\bf{aesthetics\not1\theta l}}[/tex]
A runner can run 3miles in 15 minutes. At this rate, how many miles can he run in 45minutes?
Answer:
9 miles
Step-by-step explanation:
If 3 miles is equal to 15 mins
Then you do 3 miles and times by 3 cause if you times 15 by 3, you'll get 45 mins
So the answer= 9 miles
A french fry stand at the fair serves their fries in paper cones. The cones have a radius of 222 inches and a height of 666 inches. It is a challenge to fill the narrow cones with their long fries. They want to use new cones that have the same volume as their existing cones but a larger radius of 444 inches.
What will the height of the new cones be?
Based on the given parameters about old cone, the height of the new cone is 12 inches
Equivalent ratioOld cone:
Radius, r = 2 inchesHeight, h = 6 inchesNew cone:
Radius, r = 4 inchesHeight, h = hequate ratio of radius to height in old and new cone
2 : 6 = 4 : h
2/6 = 4/h
cross product
2 × h = 6 × 4
2h = 24
h = 24/2
h = 12 inches
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You are in charge of planning a reunion party for your high school alumni. The food will cost $12 per person. The rental fee for the room is $650. The entertainment fee is $730. Other miscellaneous expenses costs $1,000. If 120 alumni are expected to come then what will be the total cost? How much must each alumnus contribute to cover the cost of the reunion (round to the nearest whole number)?
Answer:
$3820 total, $32 per alumnus.
Step-by-step explanation:
The total cost will be [tex]12\times120+650+730+1000=3820[/tex]
Each alumnus pays [tex]\frac{3820}{120} =31\frac{5}{6}[/tex]
Rounding to nearest whole number = $32 per alumnus.
Jason planted and staked a tree. The stakes are 21 ft from the base of the tree. They are connected to wires that attach to the trunk at a height of 20 ft. Find the length of a wire. O14 ft 15 ft 20 ft 29 ft Jason planted and staked a tree . The stakes are 21 ft from the base of the tree . They are connected to wires that attach to the trunk at a height of 20 ft . Find the length of a wire . O14 ft 15 ft 20 ft 29 ft
Answer:
29 ft
Step-by-step explanation:
The distance along the ground from one stake to the tree, 21 ft, and the distance up the trunk from the ground, 20 ft, are the legs of a right triangle. The length of the wire is the hypotenuse of the right triangle. We can use the Pythagorean theorem to solve this problem.
a² + b² = c²
(21 ft)² + (20 ft)² = c²
c² = 841 ft²
c = √(841 ft²)
c = 29 ft
Answer: 29 ft
A shirt and a tie together cost $57. The shirt costs $33 more than the tie. What is the cost of the shirt?
Answer:
Shirt: $45 , Tie: $12
Step-by-step explanation:
Let s be the price of the shirt
Let t be the price of the tie
Given the information from the question,
s + t = 57 - Equation 1
s - t = 33 - Equation 2
We will use substitution method to find the prices.
We will rearranging equation 1.
s = 57 - t
We will substitute s into equation 2.
57 - t - t = 33
57 - 2t = 33
-2t = 33 - 57
-2t = -24
t = -24 / -2
= 12
We now substitute t into Equation 1.
s + 12 = 57
s = 57 - 12
= 45
From here we know, the shirt costs $45 and the tie costs $12
How many terms of the G.P 3 , 3/2,3/4 are needed to give the Sum 3069 /512
Answer: 10
Step-by-step explanation:
The first term is 3 and the common ratio is 1/2.
Using the sum of a geometric series formula,
[tex]\frac{3069}{512}=\frac{3(1-(1/2)^{n}}{1-(1/2)}\\\\\frac{3069}{1024}=3(1-(1/2)^{n})\\\\\frac{1023}{1024}=1-(1/2)^{n}\\\\-(1/2)^{n}=-\frac{1}{1024}\\\\(1/2)^n=\frac{1}[1024}\\\\2^{-n}=2^{-10}\\\\n=10[/tex]
Factor completely.
Y^2-12y+32
A. (y+4)(y+8)
B. (y-4)(y-8)
C. (y+18)(y + 2)
D. (y-18)(y-2)
Answer:
B
Step-by-step explanation:
y² - 12y + 32
consider the product of factors of the constant term (+ 32) which sum to give the coefficient of the y- term (- 12)
the factors are - 4 and - 8 , since
- 4 × - 8 = + 32 and - 4 - 8 = - 12 , then
y² - 12y + 32 = (y - 4)(y - 8)
Answer:
B. (y-4)(y-8)
Step-by-step explanation:
Given equation: y² - 12y + 32. Essentially, we are going to find two numbers that multiply to 32 and add up to -12.
1) Pull out the factors of 32 and find the pair that multiply to 32 and add up -12.
They are: -8 and -4.
2) Rewrite the b of the original quadratic equation as a sum, then factorise by grouping.
y² - 8y - 4y +32
y(y - 8) - 4(y - 8)
(y - 4)(y -8)
(02.02 MC)
Given the function g(x) = 8x − 2, compare and contrast g(−2) and g(4). Choose the statement that is true concerning these two values.
Group of answer choices
The value of g(−2) is larger than the value of g(4).
The value of g(−2) is the same as the value of g(4).
The value of g(−2) is smaller than the value of g(4).
The values of g(−2) and g(4) cannot be compared.
Answer:
The value of g(-2) and g(4) cannot be compared because they are two different functions with two completely different values.
Step-by-step explanation:
So, you plug in -2 in the function of the x in g(x) = 8x - 2
Then, you multiply 8 by -2 in g(-2) = 8x - 2
8 × -2 would be -16
Afterwards you subtract -16 by 2 in g(-2) = -16 - 2
The function of g(-2) is -14 in g (x) = -14
You plug in 4 in the function of x in g(4) = 8x - 2
g(4) = 8 (4) - 2
Then, You multiply 8 by 4 which will give you 32 in
g(4) = 32 - 2
Lastly, you subtract the 32 by 2 and the function of the answer would be 30 in g(x) = 30
A line with gradient of -3 passes through the points(3,k) and (k,8). Find the value of k and hence express the equation of the line in the form ax + by = c, where a,b and c are constants.
Answer:
3x + y = 9.5
Step-by-step explanation:
1) The equation of a line is in the form of y = mx + c, where m is the gradient and c is the y-intercept. Write the given values in that form.
y = -3x + c
2) Find the value of k by using the following formula: m = y2 - y1 / x2 - x1. We already know m.
-3 = 8 - k / k - 3
-3(k - 3) = 8 - k
-3k + 9 = 8 - k
-3k + k = 8 - 9
-2k = -1
k = -1/-2
k = 1/2
3) Therefore, a line with gradient of - 3 passes through the points (3, 1/2) and (1/2, 8). We can find the y-intercept (c). To do so, choose one of the coordinates and substitute.
y = -3x + c
1/2 = -3(3) + c
1/2 = -9 + c
1/2 + 9 = c
9.5 = c
Completed equation of the line: y = -3x + 9.5
4) Write it in the form of ax + by = c.
3x + y = 9.5
2x + 15 = 3x + 10 help BRAINLIEST
Answer:
5
Step-by-step explanation:
2x + 15 = 3x + 10
3x + 10 = 2x + 15
3x - 2x = 15 - 10
x = 5
Answer:
[tex]x = 5[/tex]
Step-by-step explanation:
[tex]2x + 15 = 3x + 10[/tex]
• Group like terms together:
• Subtract 5 from both sides:
[tex]2x = 3x - 5[/tex]
• Subtract 3x from both sides:
[tex]-x = -5[/tex]
• Multiply both sides by -1:
[tex]x = 5[/tex]
n August 31 of the current year, the assets and liabilities of Gladstone, Inc. are as follows: Cash $27,900; Supplies, $900; Equipment, $8,500; Accounts Payable, $7,300. What is the amount of stockholders’ equity as of August 31 of the current year?
The amount of stockholders’ equity as of August 31 of the current year is $26400.
How to calculate the equity?The owner's equity will be:
= Cash + Supplies + Equipment - Account payable
= 27900 + 900 + 8500 - 7300
= 26400
Therefore, the amount of stockholders’ equity as of August 31 of the current year is
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A patient admitted to the hospital was prescribed a pain medication to be given every 4 hr and an antibiotic to be given every 5 hr. Bandages applied to the patient's external injuries needed changing every 12 hr. The nurse changed the bandages and gave the patient both medications at 6:00 A.M. Monday morning. A patient admitted to the hospital was prescribed a pain medication to be given every 4 hr and an antibiotic to be given every 5 hr . Bandages applied to the patient's external injuries needed changing every 12 hr . The nurse changed the bandages and gave the patient both medications at 6:00 A.M. Monday morning.
Answer:
First Question: 1. 60 hours 2. Wednesday 6:00 PM
Step-by-step explanation:
Sorry but I couldn't figure out the answer to the second question :(
Hope this helped :D
The scale of a map says that 4 çm represents 5 km.
What distance on the map (in centimeters) represents an actual distance of 4
kilometers?
Answer:
Distance on the map (in centimeters) represents an actual distance of 4 kilometers is 3,2 cm.
Step-by-step explanation:
The scale of a map = 4 cm : 5 km
The scale of a map = 4 : 500.000
So, 0,000008 times the actual distance is the distance on the map.
0,000008 × 400.000 = 3,2 cm
What additional information would allow you to prove the quadrilateral is a parallelogram?
The additional information that would allow us to prove that the image is a parallelogram is that; Line EJ ≅ Line GJ
How to prove a Parallelogram?The six basic properties of parallelograms are primarily;
Both pairs of opposite sides are parallelBoth pairs of opposite sides are congruentBoth pairs of opposite angles are congruentDiagonals bisect each otherOne angle is supplementary to both consecutive angles (same-side interior)One pair of opposite sides are congruent AND parallel.Now, looking at the parallelogram properties above and comparing with the given image of the quadrilateral attached, we can say that the additional information that would allow us to prove that the image is a parallelogram is that; Line EJ ≅ Line GJ
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Find the distance between the two points.
(-8,-8) and (-14, -16)
Answer:
the distance between both points is 10
Step-by-step explanation:
Distance (d) = √(-14 - -8)2 + (-16 - -8)2
= √(-6)2 + (-8)2
= √100
= 10
The distance between the two points (-8, -8) and (-14, -16) is 10 units.
We have,
To find the distance between two points in a coordinate plane, you can use the distance formula:
Distance = [tex]\sqrt {(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]
In this case, the two points are (-8, -8) and (-14, -16).
Let's plug the values into the distance formula:
Distance = √[(-14 - (-8))² + (-16 - (-8))²]
Distance = √[(-14 + 8)² + (-16 + 8)²]
Distance = √[(-6)² + (-8)²]
Distance = √[36 + 64]
Distance = √100
Distance = 10
Thus,
The distance between the two points (-8, -8) and (-14, -16) is 10 units.
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Use the logarithm lays to simplify this expression
log2 8x^3/2 = log2 8x^3 - log2 2y
By applying logarithm laws and the relationship between logarithms and powers of same base, the expression [tex]\log_{2} \frac{8\cdot x^{3}}{2} = \log_{2} 8\cdot x^{3} - \log_{2} 2\cdot y[/tex] is equal to y = 1.
How to simplify a logarithmic expressions
Herein we must simplify an expression that uses logarithms by applying any of the following three laws:
[tex]\log_{a} (b \cdot c) = \log_{a} b + \log_{a} c[/tex] (1)
[tex]\log_{a} \left(\frac{b}{c} \right) = \log_{a} b - \log_{a} c[/tex] (2)
[tex]\log_{a}{b^{c}} = c \cdot \log_{a} b[/tex] (3)
Now we proceed to simplify the expression:
[tex]\log_{2} \frac{8\cdot x^{3}}{2} = \log_{2} 8\cdot x^{3} - \log_{2} 2\cdot y[/tex]
[tex]\log_{2} 2\cdot y = \log_{2} 8\cdot x^{3} - \log_{2} \frac{8\cdot x^{3}}{2}[/tex]
[tex]\log_{2} 2 \cdot y = \log_{2} \frac{\frac{8\cdot x^{3}}{1} }{\frac{8\cdot x^{3}}{2} }[/tex]
[tex]\log_{2} 2\cdot y = \log_{2} 2[/tex]
By the relationship between logarithms and powers of same base:
2 · y = 2
y = 1
By applying logarithm laws and the relationship between logarithms and powers of same base, the expression [tex]\log_{2} \frac{8\cdot x^{3}}{2} = \log_{2} 8\cdot x^{3} - \log_{2} 2\cdot y[/tex] is equal to y = 1.
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Rewrite the expression with rational exponents as a radical expression by extending the properties of integer exponents.
two to the seven eighths power, all over two to the one fourth power
The expression will be written as [tex]\rm \sqrt[8]{2^5}[/tex]., the correct option is A.
What are Exponents?Exponents are the base raised to a power, It is written in the superscript of a number.
The expression given in the statement can be written as
[tex]\rm \dfrac{ 2^{7/8}}{2^{1/4}}[/tex]
By the Exponent rule,
[tex]\rm \dfrac{a^m}{a^n} = a^{m-n}[/tex]
So the expression can be written as
=[tex]\rm { 2^{7/8-1/4}[/tex]=[tex]\rm 2^{5/8}[/tex]
=[tex]\rm \sqrt[8]{2^5}[/tex]
Therefore, in radical form, the expression will be written as [tex]\rm \sqrt[8]{2^5}[/tex]., the correct option is A.
The complete question is
Rewrite the rational exponent as a radical by extending the properties of integer exponents.
2 to the 7 over 8 power, all over 2 to the 1 over 4 power
the eighth root of 2 to the fifth power
the fifth root of 2 to the eighth power
the square root of 2 to the 5 over 8 power
the fourth root of 2 to the sixth power
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vase with a circular base exerts a force of 15 N on a table with a pressure of 700 N/m2.
Find the radius of the base of the vase in cm to 2 dp.
radius =
cm
The radius of the base is 8.245 cm
Given, a vase with a circular base exerts
Pressure = 700 N/m²
Force = 15 N
Area = ?
∴ area = πr²
By finding out the area of the vase we can calculate the radius.
We know that Pressure = Force/Area
According to the equation, pressure is inversely related to area but directly related to force. Pressure rises at a constant area as the force exerted increases in strength.
therefore apply the above the formula to find out the area and radius.
700 = 15/πr²
πr² = 15/700
πr² = 3/140
r² = 3/140 × 3.14
since π value is 3.14
r² = 0.0068
r = √0.0068
r = 0.0824 m
r = 0.0824 × 100
r = 8.245 cm
we get radius as 8.245 .
Hence we get the radius of the base of the vase as 8.245 cm.
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