The measure of angle x = 63.4° and angle y = 26.6°
In this question,
Sofia wants to put a flower bed in the corner of her yard by laying a stone border that starts 3 feet from the corner of one fence and ends 6 feet from the corner of the other fence.
We need to find the angles, x and y , the fence make with the border.
Consider the following figure.
First we find the angle x.
Consider the tangent of angle x.
tan(x) = 6/3
tan(x) = 2
x = arctan(2)
x = 63.4°
Now we find the measure of angle CAD that is we find the value of y.
In right triangle ACD,
x + y = 90°
63.4° + y = 90°
y = 26.6°
Therefore, the fence make with the border, having angle x = 63.4° and angle y = 26.6°
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determine whether the following graph represent a function.
1. one to one function
2. function but not one to one
3. not a function
Write a rule so that for every input, the output is an even number.
The output is always an even integer for every input. Odd numbers end in the digits 1, 3, 5, 7 while even numbers conclude in the numerals 0, 2, 4, 6, 8.
What are odd and even numbers?A number that can be split into two equally sized groups is said to be even. A number that cannot be split into two equal groups is said to be odd.No matter how many digits they have, even numbers always end in 2, 4, 6, 8 or 0. Odd numbers end with 1, 3, 5, 7, and 9.Any number multiplied by an even number gives an even number.Let us consider an input = number (n) × even number.
So, the output is definitely an even number.
The output is always an even integer for every input. Odd numbers end in the digits 1, 3, 5, 7 while even numbers conclude in the numerals 0, 2, 4, 6, 8. In this instance, we can multiply any x number by any even integer to obtain an even number.
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Euler's formula, V − E + F = 2 relates the number of vertices V, the number of edges E, and the number of faces F of a polyhedron. Solve Euler's formula for V
Answer:
V = E - F + 2.
Step-by-step explanation:
V − E + F = 2
Add E to both sides
V + F = E + 2
Subtract F from both sides:
V = E - F + 2.
Masha bought red, green, and yellow balloons for a party. She bought 40 red balloons. The number of green balloons Masha bought is 3/5 of the number of red balloons. The number of green balloons is also 2/3 of the number of yellow balloons.
The number of green and yellow balls is 24 and 36 respectively.
Given that,
Masha bought red, green, and yellow balloons for a party.
red balloons = 40 .
The number of green balloons Masha purchased = 3/5 of the red balloons.
The number of green balloons is again = 2/3 of yellow balloons.
Fraction is described as the number of compositions that comprise the Whole.
Here,
according to the question
Number of red ballons = 40
The number of green balloons Masha bought is 3/5 of the number of red balloons = 40 * 3/5
= 8* 3
= 24
The number of green balloons is also 2/3 of the number of yellow balloons.
= 3/2 * 24
= 36
Thus, the number of green and yellow balls is 24 and 36 respectively.
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Find the slope and y -intercept of each line.
(A/D)x + (B/D)y = C/D
The slope is -A/B and y-intercept is C/B in the line (A/D)x + (B/D)y = C/D
What is a slope of line?A line's steepness and direction are determined by the slope of the line. Without actually using a compass, determining a line's slope in a coordinate plane allows one to anticipate whether a line is parallel, perpendicular, or not.
The change in a line's y coordinate relative to its change in x coordinate is referred to as the line's slope. Δy is the net change in the y coordinate, while Δx is the net change in the x coordinate.
Therefore,
m = y₂-y₁/x₂-x₁ (where m denotes the slope) can be used to express how the y coordinate changes in relation to the x coordinate.
Be aware that tan ∅ = y/x.
We also refer to this tan as the line's slope
We know that the equation for slope(m) and y - intercept(c) of a line is given by :
y = mx + c
Here the equation is give as (A/D)x + (B/D)y = C/D, lets simply
⇒ (A/D)x + (B/D)y = C/D
⇒ B(y)/D = C/D -(A/D)x
⇒ [tex]\frac{B(y)}{D}[/tex] = [tex]\frac{C -A(x)}{D}[/tex]
⇒ B(y) = C - A(x)
⇒ y = [tex]\frac{C -A(x)}{B}[/tex]
⇒ y = [tex]\frac{ -A}{B}x + \frac{C }{B}[/tex]
Here, slope is -A/B and y-intercept is C/B
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Find the 92nd term of the arithmetic sequence -29.
-22.
-15, ...
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A women went shopping and spent 2/3 of all the money she had. Then she lost 3/5 of what she had left after shopping. how much money did she have in the begining if she has $10.00 left
Answer:
Total Money = $ 75.00
Step-by-step explanation:
Let X be the Total Money
Amount Spent for Shopping = 2/3 of X = 2X/3
Money Lost = 3/5 of (X -2X/3) = 3/5 of (3X-2X)/3 = 3X/15 = X/5
Balance in hand = $ 10.00
is X - 2X/3 - X/5 = $ 10.00
LCM of 3 and 5 = 15
ie (15X - 10X - 3X)/15 = $ 10.00
(15X - 10X - 3X) = 150.00
2X = $ 150.00
X = $ 150.00/2
X = $ 75.00
b. What are the vertex, focus, and directrix of the parabola with equation x=-4 y² ?
In the equation of the given parabola the values of the vertex, focus and directrix are as follows:
v = (0,0)f = (-1/16, 0)d = x = 1/16What is a parabola?The parabola is a geometric shape that is formed from the intersection of a vertical plane in a cone.
The parabola is a quadratic function, it is composed of a vertex, or inflection point, a focus and a directrix.
In this case we have an expression given by:
x = - 4y²
We must find the canonical equation:
-4(y - 0)² = 1(x - 0)
(x - 0) = -4 (y - 0)²
has the form
(y - k)² = 4p(x - h)
This means that the vertex of this parabola is
v = (h, k)
v = (0,0)
To know the focus we must know the value of "p".
4p = -1/4
p = -1/16
f = (0, -1/16)
Directrixd = x = 1/16
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Name the types of angles shown.
L
Check all that apply.
M
A. complementary angles
B. straight angle
C. supplementary angles
Dright angle
Answer:
It would be b. and c. and d.
Step-by-step explanation:
a. What is an equation of the parabola with vertex at the origin and directrix x=- 5/2 ?
The equation that defines the parabola with vertex at the origin and directrix at x = -5/2 is
x = y²/10
We define what a parabola is
What is a parabola?The parabola is a geometric shape that is formed from the intersection of a vertical plane in a cone.
The canonical equation of a parabola is given by
(x - h)² = 4p(y - k)
The parabola is a quadratic function, it is composed of a vertex, or inflection point, a focus and a directrix.
Since the vertex and the focal axis are on the same axis, we analyze that:
v = (0, 0)
d = (-2.5, 0) them the focus is on the right so the parabola is of the form X = Y².
(y - 0)² = 4p(x - 0)
If the directrix is x = -5/2 then the focus will be:
f = (0 + p, 0)
0 + p = 2.5
p = 0 + 2.5
p= 2.5
(y - 0)² = 4*2.5(x - 0)
(Y)² = 10(X)
x = y²/10
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For each of the following statistics, determine
whether the value of the statistic is greater for Data
Set 1, equal for both data sets, or greater for Data
Set 2.
Answer:
greater for the data set 1.
Paty's Florist is creating flower arrangements for Mother's Day. A bouquet of 12 roses, 8 carnations, and 8 daisies cost $42. A bouquet of 8 roses, 6 carnations, and 10 daisies cost $34.50. A bouquet of 10 roses, 10 carnations, and 6 daisies cost $37.50.
Give the solution of the system as an ordered triple (x,y,z)
How much will a bouquet of 12 daisies cost?
The solution of the system as an ordered triple (x, y, z) is; (2, 1, 1.25).
The cost of a bouquet of 12 daisies is; $15
How to solve simultaneous Equations?Let the cost of roses be x
Let the cost of carnations be y
Let the cost of Daisies be z
Thus, we have the three simultaneous equations as;
12x + 8y + 8z = 42 ------(1)
8x + 6y + 10z = 34.5 ------(2)
10x + 10y + 6z = 37.5 ------(3)
Using online simultaneous equation calculator gives us the values as;
x = 2; y = 1; z = 1.25
Thus, the solution of the system as an ordered triple (x, y, z) is; (2, 1, 1.25).
The cost of a bouquet of 12 daisies is;
Cost = 12 * 1.25 = $15
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Brooklyn has 3 shelves in her bedroom that have 40 books on each shelf in another room,she has 4 shelves that each contain 20 books if she buys 17 books at a resale shop, how many books does brooklyn have now
Answer:120 plus 80 plus 17 equals 217
Step-by-step explanation:
Answer:
Step-by-step explanation:
217
The vertices of a triangle are L(0,1), M(1,-2), and N(-2,1). Draw the figure and its image after a translation 1 unit left
and 6 units up.
Polygon
-10-9 -8
4-3-2
104
9
8
7
6
5-
3
2
1
OF
-2
-3-
-4
Undo
4
1
2
3
Redo
4
5
6
x Reset
7 8 9
10
Answer:
(1,12)
Step-by-step explanation:
in a graph we know that 5 is equal to 10 so the answer is 1,12
Shawn surveyed his homeroom class to find out how many of his classmates have at least 1 sibling. Of the 32 people in his homeroom, 25 have at least one sibling.
(b) What is the number of students in Shawn's school with at least one sibling?
A variable is a place where values are kept. The number of students in Shawn's school with at least one sibling is 367.
What is meant by variables?A variable is a quantity that could change depending on the circumstances of an experiment or mathematical problem. Typically, a variable is denoted by a single letter. The general symbols for variables most frequently used are the letters x, y, and z.
A variable is a symbol and a stand-in for any mathematical object in mathematics. A variable can specifically denote a number, a vector, a matrix, a function, its argument, a set, or one of its elements.
Let the number of students be x, then
25/32 = x/470
simplifying the above equation, we get
25(470) = 32x
32x = 11750
Dividing both sides of the equation by 32, we get
32x / 32 = 11750 / 32
x = 367
The value of x = 367.
Therefore, at least one sibling is present among 367 kids at his school.
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Find the coordinates of the orthocenter of ΔA B C with vertices A(-3,3), B(-1,7) , and C(3,3)
The orthocenter of the ΔABC is ( -1,5 ).
What is orthocenter?In a right triangle, the orthocenter is the polygonal vertex of the right angle. When the triangle's vertices and orthocenter are joined, any point becomes the orthocenter of the other three points, according to Carnot (Wells 1991). These four locations thus form an orthocentric system.
Given the co-ordinates A( -3,3 ), B( -1,7 ) and C( 3,3 ).
To find the orthocenter using below steps:
1. First, we find the equations of AB and BC.
The general form of a line is y = mx + b
where m is the slope and b is the y-intercept.
Using the formula of slope given [tex]$m =\frac{y_2 - y_1}{x_2 - x_1}[/tex] , we will find the slope of AB and BC.
Now, slope of AB is m = (7-3/-1 + 3)
i.e. m = (4/2) = 2
Putting this 'm' in the general form and using the point B(-1, 1), we get the y-intercept as,
y = mx + b
1 = 2 × (-1) + b
i.e. b = 3.
So, the equation of AB is y = 2x + 3.
Also, slope of BC is m=(3-7/3+1) i.e. m=-4/4 i.e. m--1
Putting this 'm' in the general form and using the point B( -1,1 ), we get the y-intercept as,
y = mx + b i.e. 1 = (-1) × (-1) + b i.e. b = 0.
So, the equation of BC is y = -x.
2. We will find the slope of line perpendicular to AB and BC.
When two lines are perpendicular, then the product of their slopes is -1.
So, slope of line perpendicular to AB is [tex]m*2=-1[/tex] i.e. m = -1/2
So, slope of line perpendicular to BC is i.e.[tex]m*-1=-1[/tex] i.e. m = 1.
3. We will now find the equations of line perpendicular to AB and BC.
Using the slope of line perpendicular to AB m=-1/2 i.e. and the point opposite to AB
i.e. C(3, 3), we get,
y = mx + b
i.e. [tex]3=-1/2*3+b[/tex]
i.e. b = 9/2
So, the equation of line perpendicular to AB is
[tex]y=-x/2+9/2[/tex]
Again, using the slope of line perpendicular to BC i.e. m = 1 and the point opposite to BC
i.e. A( -3,3 ), we get,
y = mx + b
i.e. 3 = 1 × -3 + b
i.e. b = 6.
So, the equation of line perpendicular to BC is y = x+6
4. Finally, we will solve the obtained equations to find the value of (x, y).
As, we have y = x + 6 and y = -x/2 + 9/2
This gives, y = -x/2 + 9/2 → x + 6
y = -x/2 + 9/2
simplifying the above equation, we get
2x + 12 = -x + 9
3x = -3
x = -1.
So, y = x + 6
simplifying the above equation, we get
y = -1 + 6
y = 5.
The value of x = -1 and y = 5.
Hence, the orthocenter of the ΔABC is ( -1,5 ).
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Audrey has 12 yards of decorative fence border to put around her garden. She uses all the border to make 4 sections that are all the same length which expression does not represent one of the sections?
A. 12 ÷ 4
B. 4÷ 12
C. 4 × 12
D. 12/4
The expressions which does not represent one of the section is 4 ÷ 12 and 4 × 12
The correct answer options is option B and C
What is the expression to represent one of the sections?Algebra is a system for computation using letters or other symbols to represent numbers, with rules for manipulating these symbols.
Quantity of decorative fence border = 12 yardsNumber of sections = 4The expression to represent one of the sections = Quantity of decorative fence border ÷ Number of sections
= 12 ÷ 4
= 12 / 4
Therefore, the expressions which does not represent one of the section is 4 ÷ 12 and 4 × 12
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For every 27 litres of petrol a car
can run for 95 km.
How much petrol do you need
(to 1 DP) to ensure the car has
enough petrol of a trip that is
185 km?
To ensure that the car has enough petrol of a trip, we get that it should have 52.58 liters of petrol.
We are given that:
For 27 liters of petrol, we can drive a car for 95 km.
SO, by using the unitary method, we get that:
for 1 km of journey, the liters of petrol that we need is = 27 / 95 liters.
1 km = 27 / 95 liters
For 185 km, we get that:
185 km = 27 / 95 × 185 liters
185 km = 52.58 liters.
Therefore, to ensure that the car has enough petrol of a trip, we get that it should have 52.58 liters of petrol.
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2x2 =4
1 grade
waswaswaswasswaswasw
Answer:4
Step-by-step explanation: 2x2 = 4 just as u said
What can I do to get the next 2 marks? Due tmr
The area of the circular shaded area is of 116.113 cm².
What is the area of a circle?The area of a circle of radius r is given by pi multiplied by the radius squared, as follows:
A = πr²
For this problem, the shaded area is the area of the larger circle subtracted by the area of the smaller circle. We have that:
The radius of the larger circle is of 6.5 cm.The radius of the smaller circle is of 2.3 cm.Hence the area of the larger circle is given by:
Al = π(6.5)² = 132.732 cm².
The area of the smaller circle is given by:
As = π(2.3)² = 16.619 cm².
Hence the shaded area is given by:
A = Al - As = 132.732 - 16.619 = 116.113.
The shaded area is of 116.113 cm².
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can you guys check this problem
it’s says “if the perimeter of a rectangle is 84. find the length if the width is 12”
i got 2L+24=84 and for L=i got 30
please help ???
Please answer///////////
Answer: the circle is not a function
the square is a function
Step-by-step explanation:
Refer to ®R .
If SU = 16.2 centimeters, what is RT ?
The diameter of a circle is defined as being twice the length of its radius.
If SU = 16.2 centimeters then the value of RT = 8.1 cm.
What is the difference between the radius and diameter of a circle?The diameter of a circle is defined as being twice the length of its radius. The radius of a circle is measured from the center to one of the circle's endpoints, whereas the diameter is measured from one end of the circle to another end of the circle, passing through the center.
In geometry, a circle's diameter is any straight line segment that passes through the center of the circle and has endpoints on the circle. It is also referred to as the circle's longest chord. Both definitions apply to a sphere's diameter.
The diameter is twice the radius because the greatest distance between two points on a circle must be a line segment through the center of the circle.
Here, SU is the diameter and RT is the radius.
Radius of the circle = 1/2 d
Where d = 16.2 then
substitute the value of d in the above equation, and we get
Radius of the circle = 1/2 (16.2)
Radius of the circle = 8.1
Therefore, the value of RT = 8.1 cm.
The complete question is:
If SU = 16.2 centimeters, what is RT?
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Add -4 3/8 + 8 6/7 enter your answer
Answer:
Step-by-step explanation:
first you need to make the 3/8 and 6/7 into 21/56 and 48/56 then you take the -4 and 8 then add then together you get 4 then you still have the 21/56 and 48/56 which you need to add so 48 + 21 = 69/56 or 1 and 13/56 you then add the 1 to the 4 which gives you 5 then add the 13/56 to it which gives you your answer of 5 and 13/56
Write a function rule to model the cost per month of a long-distance cell phone calling plan. Then evaluate the function for the given number of minutes.
Monthly service fee: 4.52 Rate: .12 pet minute Minutes used: 250
$34.52 is the function for the given number of minutes.
What is a formula for linear equations?
Y = mx + b, where x and y are the variables, m is the slope of the line, and b is the y-intercept, is a straightforward way to write the linear equation formula. Slopes provide information about a line's direction and steepness.The function is
long- distance cell phone calling fee = Monthly service fee + Rate*Minutes used
long- distance cell phone calling fee = $4.52 + $0.12*250 = $34.52
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The chart to the right shows a country's annual egg production. Model the data in the chart with a linear function, using the points
(1994,51.7) and (1998,60.3). Let x represent the year, where x=0 represents 1994, x= 1 represents 1995, and so on, and let y
represent the egg production (in billions). Predict egg production in 2000.
Year
1994
1995
1996
1997
1998
1999
2000
Save
Egg production
(in billions)
51.7
52.6
54.4
57.1
60.3
63.8
69.5
The egg production in 2000 is predicted to be 64.6 billions eggs
Finding the slope of the line using the data form the table
y = mx + c
m = ( y2 - y1 ) / ( x2 - x1 )
m = (60.3 - 51.7 ) / ( 4 - 0 )
m = 8.6 / 4
m = 2.15
using the slope intercept form gives:y - y1 = m ( x - x1 )
y - 51.7 = 2.15 ( x - 0 )
y - 51.7 = 2.15
y = 2.15x + 51.7
year 2000 is equivalent to x = 6
y = mx + c
plugging in x = 6 gives
y = 2.15 * 6 + 51.7
y = 64.6 billions eggs
The egg production in 2000 is predicted to be 64.6 billions eggs
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Jake is borrowing $41,000 for 5 years at an APR of 3%. Using the table above, find the monthly payment.
The monthly payment for Jake borrowing $41,000 for 5 years at a 3% APR is $736.72.
What are monthly payments?Monthly payments are equal periodic payments made to offset an outstanding liability.
The monthly payments are the compounded principal (Principal + Compound Interest amount) divided by the number of periods.
The monthly payments can be computed using an online finance calculator as follows:
Data and Calculations:N (# of periods) = 60 months (5 years x 12)
I/Y (Interest per year) = 3%
PV (Present Value) = $41,000
FV (Future Value) = $0
Results:
Monthly Payment (PMT) = $736.72
Sum of all periodic payments= $44,203.20
Total Interest = $3,203.20
Thus, Jake who borrowed $41,000 for 5 years at a 3% APR needs to make a monthly payment of $736.72 to settle the principal and the compounded interest.
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Name the type of triangle formed by the points P(2, 5), Q(4, 2) and R(7, 4).
The triangle formed by joining three points on the graph is isosceles triangle
To find out the type we need to find the length of each side which can be found out with distance formula =√[tex](x2-x1)^{2}[/tex]+[tex](y2-y1)\^{2}[/tex] ) provided in the coordinate geometry
so, the length of side PQ of triangle PQR = √[tex](4-2)^{2}[/tex])+[tex](2-5) ^{2}[/tex])
= √[tex]2^{2}[/tex] +[tex](-3)^{2}[/tex]
= √4+9
= √13 units
So, the length of side QR of triangle PQR = √[tex](7-4)^{2}[/tex]+[tex](4-2)^{2}[/tex] )
= √[tex]3^{2}[/tex] + [tex]2^{2}[/tex]
= √(9+4)
= √13 units
So, the length of side PR of triangle PQR = √([tex](7-2)^{2}[/tex]+[tex](4-5)^{2}[/tex] )
= √([tex]5^{2}[/tex] + [tex](-1)^{2}[/tex] )
= √(25+1)
= √26 units
As the two sides of triangle are equal so this triangle formed by joining three points on the graph is isosceles triangle
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help me out g, pre algebra
Jupiter is closer to the sun with 17. 3 × 10^ -2 kilometers
What is ratio?
A ratio can be defined as the comparison of two numbers or elements indicating their sizes in relation to each other.
It also explains how many times a number contains another.
From the information given, we have;
Jupiter is 7. 78 × 10^8km from the sunNeptune is 4. 5 × 10^9km from the sunTo determine the distance Jupiter is from the sun than Neptune, we have to divide the distance for Jupiter by Neptune
= 7. 78 × 10^8/ 4. 5 × 10^9
= 0. 173
= 17. 3 × 10^ -2 kilometers
Thus, Jupiter is closer to the sun with 17. 3 × 10^ -2 kilometers
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In the equation |x| = b, if b < 0, then how many solutions are there for x?
O One
Ο TWO
O Zero
O Can't be determined without more information