x = 20°
BE doesnot bisect ∠EBC
Explanation:
a) m∠CBD = 55° , m∠DBE = 3x - 5 and m∠ABE = 4x - 10
m∠CBD + m∠DBE + m∠ABE = 180° (sum of angles on a line)
55° + 3x - 5 + 4x - 10 = 180
40 + 7x = 180
collect like terms:
7x = 180 - 40
7x = 140
x = 140/7
x = 20°
b) For a line to bisect an angle, it means it divided the angle into two equal parts.
To determine if BE bisect ∠EBC, we need to determine the two angles
∠DBE = 3x - 5 = 3(20) - 5 = 60 -5
∠DBE = 55
m∠ABE = 4x - 10 = 4(20) - 10 = 80 -10
m∠ABE = 70
From the diagram, EB doesn't divide ∠EBC. DB does.
BE is part of angle EBC
Hence, BE does not bisect ∠EBC
I NEED HELP WITH THIS PLSSS
Answer:
B f'(x) = 2x
Step-by-step explanation:
what does x=?........................
Answer:
x = -25 / 3
Step-by-step explanation:
10 / 3 = x / (-5/2)
10 / 3 * (-5 / 2) = x
x = -50 / 6
x = -25 / 3
Answer:
\(x=\frac{-25}{3}\)
Step-by-step explanation:
\(\frac{10}{3}=\frac{x}{\frac{-5}{2} } \\\\\frac{-5}{2}*\frac{10}{3}=\frac{x}{\frac{-5}{2} }*\frac{-5}{2} \\\\\frac{-25}{3} =x\\\\x=\frac{-25}{3}\)
The probability of getting heads on a single coin flip is ;
2
The probability of getting nothing but heads
on a series of coin flips decreases by
2
for each additional coin flip. Enter an exponential function for the
probability p(n) of getting all heads in a series of n coin flips. Give your answer in the form a (b)'. In the
event that a = 1, give your answer in the form (b)'.
Name two other positive angles of rotation that take A to B. Explain your reasoning
The two other positive angles of rotation that take A to B are 19π/6 and 31π/6.
How to explain the anglesThe unit circle is rotationally symmetric, meaning that any angle of rotation on the unit circle will take a point to another point on the unit circle with the same distance from the origin. This means that if we rotate point A by 7π/6 radians, we can also rotate it by 19π/6 or 31π/6 radians and end up at the same point B.
The point A has polar coordinates (1, 0). This means that it is located at a distance of 1 unit from the origin and has an angle of 0 radians with the positive x-axis.
The point B has polar coordinates (√3/2, 1/2). This means that it is located at a distance of √3/2 units from the origin and has an angle of 7π/6 radians with the positive x-axis.
If we rotate point A by 19π/6 radians, we get a point with polar coordinates (√3/2, -1/2). This point is located at the same distance from the origin as point B and has the same angle with the positive x-axis.
Therefore, the two other positive angles of rotation that take A to B are 19π/6 and 31π/6.
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Eleven times one number is 9 more than 8 times another number.
Answer: 11 × x = 8x + 9
Step-by-step explanation:
z varies directly as √√x and inversely as y. If: = 179 when x=25 and y= 7, find zifx = 64 and y = 4. (Round off your answer to the nearest hundredth.)
z=
We know that z varies directly as √√x and inversely as y, which can be written as:
z = k(√√x)/y
where k is the constant of proportionality.
To find the value of k, we can use the values given when x = 25 and y = 7:
179 = k(√√25)/7
179 = k(5/7)
k = (179*7)/5
k = 250.6
Now we can use this value of k to find z when x = 64 and y = 4:
z = 250.6(√√64)/4
z = 250.6(2)/4
z = 125.3
Therefore, z ≈ 125.3 when x = 64 and y = 4.
Amy needs to estimate how many students at her school like online testing. She needs to create a random sample of students. How should Amy collect her sample? Select two that apply.
O Amy should ask every 10th person leaving the school at the end of the day.
O Amy should ask 3 people at every table in the cafeteria
O Amy should ask her 10 closest friends.
O Amy should ask the 35 students in her honors math class
O Amy should ask the 50 students in the computer club.
The number of animal in a park increase by 60% every month. By the end on December the number of animals is 2560, how many animals would have been there by the end of November?
Answer:
1,600
Step-by-step explanation:
I did a bit of guessing becuase I don't know the exact way to reverse the formula, but here is what I did!
I guessed around 1,550 at first, but it was too low. I kept increasing the base number until I reached 1,600, and came to the conclusion by doing the equation;
1,600(0.6)=960
Then, since it increases each month by 60% of the previous month's value, you do
1,600+960=2,560
oh my goi i need help please help
Answer:
Division
Step-by-step explanation:
PEMDAS
Parenthesis
Exponents
Multiplecation
Division
Addition
Subtraction
You have both exponents and parenthesis, so your third step would be multiplecation, but you don't have that, so it would be division.
What is the equation of the line that passes through (5-2) and is perpendicular to y=-10+7
Answer:
y = 1/10x - 5/2
Step-by-step explanation:
I think you mean perpendicular to the line y = -10x + 7, and the point is (5, -2).
The slopes of perpendicular lines are negative reciprocals, so the perpendicular line has slope 1/10.
y = mx + b
y = (1/10)x + b
-2 = (1/10)(5) + b
-2 = 1/2 + b
-5/2 = b
y = 1/10x - 5/2
question is in picture please help!
Answer:
I’m not 100% sure but I think 120°.
Step-by-step explanation:
This is because, angles on a straight line add up to 180°. Because there is 60 degrees on one side of line B, this means the other section is 120° (120°+60°=180°) The angle labelled (3x) is alternate to the angle of 120°. Alternate angles are always equal, meaning that 3x is equal to 120°.
I hope this is right.
Which fractions are equal to 0.6
1 over 6,60 over 100,1 over 60,6 over 10
Express the following ratio in it’s simplest form
5:20
Answer:
1:4
Step-by-step explanation:
Answer:
1 : 4
Step-by-step explanation:
5:20
Divide each side by 5
5/5 : 20/5
1 : 4
Write the number below in expanded notation 75,966
What is the degree of the polynomial, y^2+7x^14-10x^2?
The degree of the polynomial is 14
How to determine the degree of the polynomial?The polynomial is given as:
y^2+7x^14-10x^2
Here, we assume that the variable of the polynomial is x
The highest power of x in the polynomial y^2+7x^14-10x^2 is 14
Hence, the degree of the polynomial is 14
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Find the circumference of this circle
using 3 for 7.
C ~ [?]
2.
C = 27r
Answer:
\( \displaystyle C = 12\)
Step-by-step explanation:
remember circumference formula
\( \displaystyle C = 2\pi r\)
given that,r=2 thus substitute:
\( \displaystyle C = 2\pi .2\)
simplify mutilation:
\( \displaystyle C = 4\pi \)
substitute the given value of π:
\( \displaystyle C = 4.3\)
simplify multiplication:
\( \displaystyle C = 12\)
and we are done!
Answer:
C = 12.
Step-by-step explanation:
Given :-
Radius of circle , r = 2.Value of pi, π = 3To find :-
Circumference of circleFormula for finding circumference of circle;
Circumference of circle = 2 × π × radius.
Solution :-
Circumference of circle = 2 × π × radius.
Substitute the value of radius into the formula.Circumference of circle = 2 × π × 2
Multiply ; 2 × 2Circumference of circle = 4 π.
plug 3 as π.Circumference of circle = 4 × 3
Multiply to getCircumference of circle = 12
5. A conical shaped pile of sand at the beach has a base circumference of 16.5 feet
and stands 10.4 feet high. The Department of Public Works is going to remove
75% of the sand. How much sand will be left in the pile after they remove 75% of
the sand?
Answer: 18.78 cubic feet
Step-by-step explanation:
The detailed analysis is attached below.
Jill Janzen's gross weekly pay is $298. Her earnings to date for the year total $14,900. What amount is deducted from her pay each week for Social Security, which is taxed at 6.2%?
Jill's annual earnings can be calculated by multiplying her weekly pay by the number of weeks in a year: $298/week x 52 weeks/year = $15,496/year. Her earnings to date are $14,900, so she has earned an additional $596 in the current week.
Social Security is taxed at 6.2%, so the amount deducted from her pay each week is 6.2% of her gross weekly pay. That's 0.062 x $298 = $18.48.
Asha ran a race in 20.7 seconds. Katie ran the same race 0.25 seconds faster. how fast did Katie run the race?
Hey there!
\(Answer:\boxed{20.95}\)
\(Explanation:\)
To find the answer, we can add up the time from both people.
\(20.7(20.70)+0.25=20.95\)
\(\boxed{20.95}\text{ is your answer.}\)
Hope this helps!
\(\text{-TestedHyperr}\)
Points A and B are on opposite sides of a lake. Another point, C. is 94.4 meters from Angle A. The measure of Angle A is 72° and the measure of Angle C is 30°. Find the distance between A and B.
To find the distance between points A and B, we can use trigonometry and the given information.
Let's label the distance between A and B as "d". We know that point C is 94.4 meters away from point A. From angle A, we have the measure of 72°, and from angle C, we have the measure of 30°.
Using trigonometry, we can use the tangent function to find the value of "d".
tan(72°) = d / 94.4
To solve for "d", we can rearrange the equation:
d = tan(72°) * 94.4
Using a calculator, we can evaluate the expression:
d ≈ 4.345 * 94.4
d ≈ 408.932
Therefore, the distance between points A and B is approximately 408.932 meters.
We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately
. We would like to be 90% confident that the estimate is within 1 of the true population mean. How large of a sample size is required?
Therefore, a sample size of 68 is required to estimate the population mean with 90% confidence and a margin of error of 1, based on the given information.
Which abbreviations best sum up population?The population is the total number of people who reside in a specific area. By assessing the population, we can determine the number of organisms and the appropriate course of action. For instance, if we are aware of a city's exact population, we may estimate how many resources are required there.
To calculate the sample size required to estimate a population mean with a certain level of confidence and margin of error, we can use the following formula:
n = [(z*σ)/E]^2
Where:
n = sample size
z = the z-score associated with the desired level of confidence (90% confidence corresponds to z = 1.645)
σ = the population standard deviation
E = the desired margin of error (in this case, E = 1)
Substituting the given values into the formula, we get:
n = [(1.645*5)/1]^2 = 67.65
Rounding up to the nearest whole number, we get a sample size of n = 68.
Therefore, a sample size of 68 is required to estimate the population mean with 90% confidence and a margin of error of 1, based on the given information.
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Therefore, a sample size of 68 is required to estimate the population mean with 90% confidence and a margin of error of 1, based on the given information.
Which abbreviations accurately describe the population?The population is the total number of people who reside in a certain area. We can figure out how many organisms there are and what the best course of action is by looking at the population. For example, if we are aware of a city's exact population, we may calculate the amount of resources needed there.
To calculate the sample size required to estimate a population mean with a certain level of confidence and margin of error, we can use the following formula:
n = [(z*σ)/E]²
Where:
n = sample size
z = the z-score associated with the desired level of confidence (90% confidence corresponds to z = 1.645)
σ = the population standard deviation
E = the desired margin of error (in this case, E = 1)
Substituting the given values into the formula, we get:
n = [(1.645*5)/1]² = 67.65
Rounding up to the nearest whole number, we get a sample size of n = 68.
Therefore, a sample size of 68 is required to estimate the population mean with 90% confidence and a margin of error of 1, based on the given information.
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i need help 5/9 = /45 fractions
Answer:
5/9 = 25/45
Step-by-step explanation
multiply 5/9 by 5/5 this will turn it into 25/45
5x5=25
5x9=45
Kathryn deposits 100 into an account at the beginning of each 4-year period for 40 years. The account credits interest at an annual effective interest rate of i. The accumulated amount in the account at the end of 40 years is X, which is 5 times the accumulated amount in the account at the end of 20 years. Find X
Answer:
X=6.195
Attached please find equation.
Step-by-step explanation:
Let 1+i∗=(1+i)4 so that the calculation using annuity
A new computer graphics company employs 10 programmers. The company decides to expand into digital animation and needs to transfer 3 of the programmers into the new department. How many different combinations of 3 programmers can be chosen to transfer to the new department?
A. 3
B. 30
C. 120
D. 840
There are 120 different combinations of 3 programmers that can be chosen to transfer to the new department
How to determine the ways of selection?From the question, we have
Total number of programmers, n = 10
Numbers to programmers to select, r = 3
The number of ways of selection could be drawn is calculated using the following combination formula
Total = ⁿCᵣ
Where
n = 10 and r = 3
Substitute the known values in the above equation
Total = ¹⁰C₃
Apply the combination formula
ⁿCᵣ = n!/(n - r)!r!
So, we have
Total = 10!/(7! * 3!)
Evaluate
Total = 120
Hence, the number of ways is 120
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The slope of the line perpendicular to the line: y= ½ x+ 10
Question 14 options:
-2
10
2
1/2
Answer: -2
Step-by-step explanation:
The slope of the line perpendicular to another slope is the opposite sign and flipped(reciprocal)
The slope of the line = 1/2
So the perpendicular slope = -2
what are the assymptotes of this equation
Everyone in the population must have an of being selected in order for a sample to be an
Answer: Everyone in your population must have an equal, non-zero chance of being selected. (In other words, everyone has an equal chance of receiving a survey.) You must know, specifically, what that chance of being selected is for each person.
If and is in , find cos
Answer:
9/41
Step-by-step explanation:
Draw a right triangle in quadrant 2 and label your opposite (40) and hypotenuse (41) sides then use the pythagorean theorem to find the missing side (the adjacent side) which is equal to 9. Then since cosine is adjacent/hypotenuse and you get 9/41.
Factorise
7lm - 21lmn
Answer:
7lm - 21lmn
taking common 7lm
7lm(1-3n)
p^q is logically equivalent to
The logically equivalent statement to p → q is:
~q → ~p
How to find the logically equivalent statement?The conditional statement:
p → q
Assuming p and q are propositions, the conditional statement may be expressed as:
"If p holds true, then q follows suit. "
'
Whenever p is true, q is true as well. This implies that if q is false, then p must also be false.
We can rephrase this statement cleverly using the negative propositions, which include the opposite or contradictory statements.
~p and ~q
These mean:
Not p and Not q respectively.
Then the statement:
"If q is not true, then p is not true"
Is written as:
~q → ~p
So this is the logically equivalent statement.
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The Complete Question
Given a conditional statement p → q, which statement is logically equivalent?
~p → ~q
~q → ~p
q → p
p → ~q