Answers
fd is congruet to db
ed is congruent to da
and vertical angles theorem
Related Questions
What is the similarity ratio of a cube with volume 1,728m3 to a cube with volume 19,683m3?
A. 9:4
B. 4.9
C. 144:729
D. 729:144
A grid shows the positions of a subway stop and your house. The subway stop is located at (6,-2) and your house is located at (3,1) what is the distance to the nearest unit between your house and the subway stop?
A. 10
B. 9
C. 4
D. 3
Answers
A grid shows the positions of a subway stop and your house. The subway stop is located at (6,-2) and your house is located at (3,1) what is the distance to the nearest unit between your house and the subway stop? C! ;)
May be wrong! (If I am wrong I am deeply sorry!)
An organization president conducts a survey to see where the next convention should be held. She uses a list of 1008 members in alphabetical order and selects every 10th member to participate in the survey. An organization is conducting a survey to see where their next convention should be held. They use a list of their 1008 members listed in alphabetical order and selects every 10th member to participate in the survey Is this sample valid or not valid, and why? A not valid; Since 1008 divided by 10 is not a whole number, there are 8 members who are not accounted for. B not valid; The survey chooses only members of the organization. C valid; There is no bias in the survey. D not valid; The survey chooses only every 10th member.
Answers
Answer:
The correct option is:
Option: C
C valid; There is no bias in the survey.
Step-by-step explanation:
It is given that:
An organisation president uses a list of 1008 members in alphabetical order and selects every 10th member to participate in the survey.
So, the sample used by her is a valid sample.
Since, she sets a random rule to choose the members to participate in the survey.
The sample used by her is unbiased.
( Since, the aim of our survey questions are to capture an unbiased opinion to capture the true sentiments of the survey taker )
Hence, the correct statement regarding her survey is:
C. valid; There is no bias in the survey
To estimate 179% of 41 by rounding use the expression
Answers
so 1.79×41=73.39
if you round that the answer is 73.4
Answer:
To estimate 179% of 41 by rounding, use the expression
✔ 180%(40)
.
Using the distributive property, the expression is equivalent to
✔ (100%)(40) + (80%)(40)
.
179% of 41 is about
✔ 72
.
Step-by-step explanation:
3. Some investments in the stock market have earned 12% annually. At this rate, earnings can be found using the formula A = P(1.12)n, where A is the total value of the investment, P is the initial value of the investment, and n is the number of years the money is invested. If $5000 is invested in the stock market at this annual rate of return, what is the expected total value after 20 years?
( Please show your work so I can understand how you got that answer! Thanks in advance! )
Answers
after 20 years, n = 20.
1. if a dozen eggs (12 eggs) are worth 3 cowry shells, how much would 6 dozen be worth?
a. 9 cowry shells
b. 36 cowry shells
c. 18 cowry shells
d. 15 cowry shells
2. I have 7 cowry shells. If a dozen eggs (12 eggs) cost 3 cowry shells, how many dozens can i purchase?
a. 21 dozen
b. 2 dozen
c. 9 cowry dozen
d. 3 dozen,
Answers
2. B
Hope this helps :))
1) 1 dozen of eggs costs 3 cowry shells
6 dozens of eggs cost ? cowry shells
We can put this into ratio form and solve my cross multiplying
[tex] \frac{dozen}{cowry.shells} [/tex]
[tex] \frac{1}{3} = \frac{6}{?} [/tex]
18 = ?
6 dozen of eggs is worth of 18 cowry shells
Your answer is C) 18 cowry shells
2) I have 7 cowry shells, 1 dozen costs 3 cowry shells
We can only purchase 2 dozens of eggs
2 x 3 = 6 cowry shells, we do not have enough cowry shells to buy more
Your answer is option B) 2 dozens
Larry has 62 nickels, 24 dimes, 17 quarters, and 11 fifty-cent pieces. How much money does he have?
A. $17.15
B. $16.30
C. $15.25
D. $16.75
Answers
Answer:
Larry has 1525 cents or 15.25 dollars.
Step-by-step explanation:
The following are the values for each of the coins:
1 Nickel=5 cents
1 Dime = 10 cents
1 Quarter = 25 cents
1 Fifity-cent = 50 cents
So the total value of the Larry's have is
Total money = 62*5 cents + 24*10 cents + 17*25 cents + 11*50 cents
Total money = 310 cents + 240 cents + 425 cents + 550 cents
Total money = 1525 cents
This is equal to 15.25 dollars.
Evaluate |c2 + b2|, given a = 5, b = -3, and c = -2.
A.) 2
B.) 6
C.) 10
D.) 13
Answers
The answer to this should be 13
Substitute the value of the variable into the expression and simplify
Substitute: |-2^2 + -3^2|
Simplify: |-2^2|= 4, |-3^2|= 9
Solve: 4 + 9 = 13
Given a = 5, b = -3, and c = -2, the absolute value of |c2 + b2| is calculated by squaring the values of c and b, adding them, then taking the absolute value, resulting in 13.
Explanation:The question asks us to evaluate the expression |c2 + b2|, given that a = 5, b = -3, and c = -2. The vertical bars indicate that we are dealing with the absolute value, which means we want the positive result of the expression inside the bars.
First, substitute the given values into the expression, we get |-22 + (-3)2| which is |4+9|.
Second, add the squares of c and b together to get 13.
Finally, since the absolute value of 13 is still 13, this is our answer, corresponding to option D.
Learn more about Absolute Value here:https://brainly.com/question/18731489
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Which of these statements is true for f(x)....
Answers
(0,3)
answer
B. the y -intercept is (0,3)
Answer:
B. the y -intercept is (0,3)
Step-by-step explanation:
If somebody uses 1 quart of blue paint each month in one year how many gallons of paint will they use
Answers
1 Gallon = 4 Quarts
1 Quart / Month = 12 Months / 12 Quarts/year
12 / 4 = 3 Gallons
A complex number, will, in general, have ____ fifth roots.
What is the blank?,
Answers
In the diagram below of right triangle ACB, altitude CD is drawn by hypotenuse AB. if AB= 36 and AC= 12, what is the length of AD?
Answers
The length of AD is 18 units.
To find the length of AD, we can use the fact that the altitude from the right angle of a right triangle divides the triangle into two smaller similar triangles.
Let's denote the length of AD as x.
Since triangle ADC and triangle CDB are similar to triangle ACB, we can set up the following proportions:
For triangle ADC:
AD / AC = CD / AB
For triangle CDB:
BD / AC = CD / AB
We already know that AC = 12, AB = 36, and CD = x. So, let's substitute these values into the proportions:
For triangle ADC:
x / 12 = CD / 36
For triangle CDB:
(36 - x) / 12 = CD / 36
Now, let's solve these equations:
From the first equation:
x / 12 = CD / 36
x = (12 * CD) / 36
x = CD / 3
From the second equation:
(36 - x) / 12 = CD / 36
36 - x = (12 * CD) / 36
36 - x = CD / 3
Now, let's solve for CD using the second equation:
36 - x = CD / 3
36 - (CD / 3) = CD / 3
36 = (2 * CD) / 3
CD = (36 * 3) / 2
CD = 54
Now that we have found CD, we can substitute it into the first equation to find x:
x = CD / 3
x = 54 / 3
x = 18
So, the length of AD is 18 units.
Claudia dumped her 200-penny coin collection on the floor and counted the number of pennies that landed heads up. Claudia repeated this process 5 times and had an average of 84 pennies landing heads up on each try. Which of the following statements is true?
If Claudia had repeated this process fewer times, the average number of pennies landing heads up would be closer to 100.
Each penny has a greater probability of landing heads up than tails up.
The theoretical probability of a penny landing heads up is
If Claudia had repeated this process more times, the average number of pennies landing heads up would be closer to 100.
Answers
Line AB and BC for a right angle at point B. If A(-3,4) and B(4,4) what is the equation of line BC?
Answers
x=4.
Explanation:
The slope of line AB is given by the formula
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Using the coordinates of A and B, we have
[tex]m=\frac{4-4}{4--3}=\frac{0}{7}=0[/tex]
Perpendicular lines have slopes that are negative reciprocals. Since the slope of AB is 0/7, the reciprocal is 7/0, which is undefined.
Any line with an undefined slope is a vertical line. This will be a vertical line that passes through point B.
Vertical lines have the equation x=c, where c is a constant; since it runs through B, which has coordinates (4, 4), this means the equation is x=4.
Answer: The required equation of line BC is [tex] x=4.[/tex]
Step-by-step explanation: As shown in the attached figure, lines AB and BC meet at right angle at the point B. The co-ordinates of point A and B are (-3, 4) and B(4, 4).
We are to find the equation of line BC.
We know that the slope of a line passing through the points (a, b) and (c, d) is given by
[tex]m=\dfrac{d-b}{c-a}.[/tex]
So, the slope of the line AB will be
[tex]m=\dfrac{4-4}{4-(-3)}\\\\\Rightarrow m=0.[/tex]
Therefore, the equation of the line AB is
[tex]y-4=m(x-4)\\\\\Rightarrow y-4=0\\\\\Rightarrow y=4.[/tex]
Since y = constant is the equation of a line parallel to X-axis, so its perpendicular line will be parallel to Y-axis.
So, its equation will be of the form
x = constant.
Since the line BC is perpendicular to AB passing through the point (4, 4), so we must have
[tex]x=4.[/tex]
Thus, the required equation of line BC is [tex] x=4.[/tex]
Find all the zeros of the equation. Need help finding the zeros.
-3 x^{4} } +27 x^{2} +1200=0
Answers
-3x^4+27x^2+1200=0
let x^2=a
we can re-write our expression as:
-3a^2+27a+1200=0
-3(a^2-9a-400)=0
a^2-9a-400=0
factorizing the above we have:
a^2+16a-25a-400=0
a(a+16)-25(a+16)=0
(a+16)(a-25)
thus replacing back x^2 we have:
(x^2+16)(x^2-25)
=(x^2+16)(x-5)(x+5)
factorizing (x^2+16) we get
x^2=+/-√-16
x=+/-4i
thus the zeros of the expression are:
x=-5, x=5 , x=-4i, x=4i
Final answer:
The zeros of the equation -3x^4 + 27x^2 + 1200 = 0 can be found by substituting y = x^2 to create a quadratic equation, solving for y using the quadratic formula, and then solving for x for each y value found.
Explanation:
To find all the zeros of the equation -3x^4 + 27x^2 + 1200 = 0, we can treat the equation as a quadratic in form by substituting y = x^2, which reduces the equation to -3y^2 + 27y + 1200 = 0. This is now a standard quadratic equation that can be solved using the quadratic formula, y = (-b ± sqrt(b^2 - 4ac))/(2a), where a = -3, b = 27, and c = 1200. Once we find the values for y, we substitute back x^2 = y to get the values of x which are the zeros we are looking for.
The quadratic equation would provide us with two values for y, say y1 and y2. For each y value found, we solve for x by taking the square root, resulting in two x values for each y, giving us a total of four zeros for the original quartic equation.
we can re-write our expression as:
-3a^2+27a+1200=0
-3(a^2-9a-400)=0
a^2-9a-400=0
factorizing the above we have:
a^2+16a-25a-400=0
a(a+16)-25(a+16)=0
(a+16)(a-25)
thus replacing back x^2 we have:
(x^2+16)(x^2-25)
=(x^2+16)(x-5)(x+5)
factorizing (x^2+16) we get
x^2=+/-√-16
x=+/-4i
thus the zeros of the expression are:
x=-5, x=5 , x=-4i, x=4i
Please help! Thanks!
Answers
A circle has 360 degrees. Arc XY has a central angle of 90 degrees.
Therefore arc XPY = has a central angle of 270 degrees.
arc XPY = 270/360 * 12*PI meters = 9*PI meters
Answer is B
That's 3/4 of a complete circle arc (270/350 = 3/4).
Let's first find the total circumference.
[tex]C=2 \pi r= 12 \pi[/tex]
Multiply that with 3/4
[tex]3/4*12\pi=9 \pi[/tex]
Your answer is the second choice. Hope this helps! :)
A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded to the nearest tenth? 13.8 cm2 17.3 cm2 32.7 cm2 69.0 cm2
plz dont ask for a pic i cant put one
Answers
n = 5
a = 4.35926 cm
r = 3 cm
R = 3.7082 cm
A = 32.6944 cm²= 32.7 cm²
P = 21.7963 cm
x = 108 °
y = 72 °
Agenda:
r = inradius (apothem)
R = circumradius
a = side length
n = number of sides
x = interior angle
y = exterior angle
A = area
P = perimeter
π = pi = 3.14159...
√ = square root
Formula:
Inradius r = (1/2)a cot(π/n) = R cos(π/n)
Answer:
[tex]\text{Hence, area of regular pentagon is }32.7 cm^2[/tex]
Step-by-step explanation:
Given that a regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm.
we have to find the area of pentagon.
Apothem=a=3 cm
Perimeter=s=21.8 cm
[tex]\text{Area of regular pentagon=}\frac{1}{2}\times apothem\times perimeter[/tex]
[tex]\frac{1}{2}\times s \times a[/tex]
[tex]=\frac{1}{2}\times 21.8\times 3[/tex]
[tex]=\frac{65.4}{2}=32.7 cm^2[/tex]
[tex]\text{Hence, area of regular pentagon is }32.7 cm^2[/tex]
Option 3 is correct.
Match each economic term with its description. Tiles There are no barriers to entry in the market. There is a single seller in the market. Three companies secretly enter into a price agreement. Every company in this market structure is aware of the actions of the other companies. Pairs monopoly arrowBoth oligopoly arrowBoth perfect competition arrowBoth collusion arrowBoth \
Answers
Each economic term is matched with its appropriate description as follows:
OLIGOPOLY || There are no barriers to entry in the market.
MONOPOLY || There is a single seller in the market.
COLLUSION || Three companies secretly enter into a price agreement.
PERFECT COMPETITION || Every company in this market structure is aware of the actions of the other companies.
There are no barriers to entry in the market is the match of - Oligopoly (The market is shared by many sellers )
There is a single seller in the market is the match of - Monopoly
Three companies secretly enter into a price agreement is the match for - Collusion
Every company in this market structure is aware of the actions of the other companies is the match for Perfect Competition.
Find the missing value to the nearest whole number of tan x° =0.9
Answers
We have to find the missing value to the nearest whole number of tan x° =0.9.
Since, tan x° =0.9
To evaluate the missing value of 'x', we will take [tex] \arctan (0.9) [/tex]
So, [tex] x^{\circ}=\arctan (0.9) [/tex]
Now, we will find the value of [tex] \arctan (0.9) [/tex]using the calculator, we get,
[tex] x^{\circ}=\arctan (0.9)=41.9^{\circ}=42^{\circ} [/tex]
So, the missing value of 'x' to the nearest whole number is [tex] 42^{\circ} [/tex].
miles is buying a chair that regularly costs $250. today the chair is on sale for 30% off. if the tax rate is 6%, what is the sale price of the chair including tax?
Answers
1. 250 x 0.7 (this is the percent that Miles is paying)
$175
2. $175 x 1.06 (this is the entire price and sale tax together)
$185.50 is the final price.
The sale price of the chair including tax is $185.5.
What is tax?In mathematics, the tax calculation is related to the selling price and income of taxpayers. It is a charge imposed by the government on the citizens for the collection of funds for public welfare and expenditure activities. There are two types of taxes: direct tax and indirect tax.
Given that, Miles is buying a chair that regularly costs $250.
Today the chair is on sale for 30% off
So, the new cost is 250-30% of 250
= 250 - 30/100 ×250
= 250-75
= $175
The tax rate is 6%
Sale price = 175+6% of 175
= 175+6/100 ×175
= 175+0.06×175
= $185.5
Therefore, the sale price of the chair including tax is $185.5.
To learn more about the tax visit:
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PLEASE HELP FAST!!!!
As a pendulum swings , the angle (theta) that it makes with the vertical changes through its swing. The force of gravity pulling on the bob is given by F=mg sin (theta), where g is equal to 9.8m/s^2. If the mass of the pendulum is 0.01 kg, what is the force pulling on the pendulum when it makes a 22.5 degree angle with the vertical?
Answers
This is found by using the formula:
F=mg sinθ
F = 0.01(9.8)sin (22.5)
F ≈ 0.04
We have been given that the formula for the force of gravity pulling on the bob is given by [tex] F=m\times g\times sin(\theta) [/tex]), where g is equal to[tex] 9.8m/s^2 [/tex].
Now, we have been given that the mass of the bob of the pendulum is 0.01 kg and that the pendulum makes 22.5 degree angle with the vertical.
Thus, applying the given values in the formula of the given in the question, we get the formula to be:
[tex] F=m\times g\times sin(\theta)=0.01\times9.8\times sin(22.5^{\circ}) [/tex]
[tex] \therefore F\approx0.0375 [/tex] N
A swing set is going to be placed over a region of mulch that is shaped like a trapezoid. The bases of the trapezoid have a length of 12 and 15 feet, and the perpendicular distance between the bases is 8.5 feet. What is the area of the region under the swing set? If necessary, round your answer to the nearest tenth.
Answers
Answer:
[tex]114.8\ ft^{2}[/tex]
Step-by-step explanation:
we know that
The area of a trapezoid is equal to
[tex]A=\frac{1}{2}(b1+b2)h[/tex]
In this problem we have
[tex]b1=12\ ft[/tex]
[tex]b2=15\ ft[/tex]
[tex]h=8.5\ ft[/tex] ----> the height of the trapezoid is the perpendicular distance between the bases
substitute the values
[tex]A=\frac{1}{2}(12+15)(8.5)[/tex]
[tex]A=\frac{1}{2}(27)(8.5)=114.75\ ft^{2}[/tex]
Round to the nearest tenth
[tex]114.75=114.8\ ft^{2}[/tex]
Answer:
114.8 is the answer
Step-by-step explanation:
got it on edgen
What is the x intercept for y=3x+4
Answers
Hope that helps!
kinda self explanatory
Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long is the longest side?
Answers
45/3 = 15
2 sides are 15 feet each the third side = 19 feet
longest side = 19 feet
greatest common factor of −27x2yz5 + 15x3z3
Answers
-27x^2yz^5+15x^3z^3
-27x^2yz^5=-3*3*3*x*x*y*z*z*z*z*z
15x^3z^3=3*5*x*x*x*z*z*z
the GCF is the product of the lowest power of each factor that appears in each term
thus we shall have:
3*z*z*z*x*x
=3z^3x^2
NASA cameras film a rocket launcher vertically
Answers
https://brainly.com/question/9168529
Arthur borrowed $380 for six months, with $67 monthly payments. How much interest will he pay on this loan?
Answers
Given is the borrowed amount = 380 dollars.
Repayment period = 6 months.
Monthly installments = 67 dollars.
After six months, total repaid amount would be sum of all six monthly installments i.e. 6 x 67 = 402 dollars.
The interest to be paid on this loan would be difference of total repaid amount and borrowed amount.
Interest paid = Repaid amount - Borrowed amount
Interest = 402 dollars - 380 dollars
Interest = 22 dollars.
So, he would pay 22 dollars as interest on this loan.
The value of y directly varies with x, and y=5.4 when x =9. Find y when x= negative 10
Answers
[tex]\bf \textit{we also know that } \begin{cases} y=5.4\\ x=9 \end{cases}\implies 5.4=k9\implies \cfrac{5.4}{9}=k \\\\\\ \cfrac{\quad \frac{54}{10}\quad }{9}=k\implies \cfrac{54}{10}\cdot \cfrac{1}{9}=k\implies \cfrac{3}{5}=k\qquad thus\qquad \boxed{y=\cfrac{3}{5}x} \\\\\\ \textit{when x = -10, what is \underline{y}?}\qquad y=\cfrac{3}{5}(-10)[/tex]
Final answer:
The value of y, which directly varies with x, is found by first determining the constant of variation when x = 9 and y = 5.4. Using this constant, we calculate the value of y for x = -10, resulting in y = -6.
Explanation:
The value of y directly varies with x, which means the relationship between x and y can be described by the equation y = kx, where k is the constant of variation. Since y = 5.4 when x = 9, we first find the constant of variation as follows: k = y/x = 5.4/9 = 0.6. Now, to find y when x is -10, we use the constant of variation k in the equation: y = kx = 0.6(-10) = -6.
The relationship between y and x is one of direct variation, represented by the equation y = kx, where k is the constant of variation. Given that y = 5.4 when x = 9, the constant k is calculated as 0.6. Applying this constant, when x = -10, the value of y is found to be -6. This process showcases the direct variation principle in determining y based on the given x values and the constant of variation.
A circle could be circumscribed abut the quadrilateral below
Answers
False
since
m∠B + m∠D must be equal to 180°
and
m∠A + m∠C must be equal to 180°
Answer:
B. False.
Step-by-step explanation:
We have been given an image of a quadrilateral. We are asked to determine whether a circle could be circumscribed about the given quadrilateral.
We know that opposite angles of a cyclic quadrilateral are supplementary.
Let us check is this true for our given quadrilateral or not.
[tex]m\angle B+m\angle D=180^{\circ}[/tex]
[tex]80^{\circ}+60^{\circ}=180^{\circ}[/tex]
[tex]140^{\circ}\neq 180^{\circ}[/tex]
Now let us check other pair of angles.
[tex]m\angle A+m\angle C=180^{\circ}[/tex]
[tex]110^{\circ}+110^{\circ}=180^{\circ}[/tex]
[tex]220^{\circ}\neq 180^{\circ}[/tex]
Since opposite angles of our given quadrilateral are not supplementary, therefore, a circle could not be circumscribed about the given quadrilateral.
Write this number in standard form.
1 x 1 + 8 x 1/100 + 9 x 1/1000,
Answers
The sum of the squares of two consecutive positive even integers is 340. what are the integers?
Answers
12 squared is 144 and 14 squared is 196
144 + 196 = 340