Answer:
1. B||C
2.B||D
4.C||D
Step-by-step explanation:
Substituting 10 in for x, the angle next to line b is
7(10)-5 = 70-5 = 65°.
The angle next to line c is
10(10)+15 = 100+15 = 115°.
The angle next to line d is
12(10)-5 = 120-5 = 115°.
The angle next to line e is
8(10)-25 = 80-25 = 55°.
Hope this helped you!
Which statement is true about the given function?
fx) > 0 over the interval (-0,3).
f(x) > 0 over the interval (-:-).
f(x) <0 over the interval (-0,3).
f(x) <0 over the interval (- : -).
Answer:
Option C.
Step-by-step explanation:
If the graph of a function f(x) lies above the x-axis, then f(x) > 0.
If the graph of a function f(x) lies below the x-axis, then f(x) < 0.
From the given graph it is clear that the graph of f(x) intersect the x-axis at x=3.
Before x=3 the graph lies below the x-axis. So,
[tex]f(x) < 0[/tex] over the interval [tex](-\infty,3)[/tex].
After x=3 the graph lies above the x-axis. So,
[tex]f(x) > 0[/tex] over the interval [tex](3,\infty)[/tex].
Therefore, the correct option is C.
Which inequality is shown in this graph?
Answer:
B.
Step-by-step explanation:
y- int. = - 2
Slope is negative because the line is going down. So, it is B. or C.
The shaded area is under the line, so it is ≤. The answer is B.
We define a bow-tie quadrilateral as a quadrilateral where two sides cross each other. An example of a bow-tie quadrilateral is shown below. Seven distinct points are chosen on a circle. We draw all $\binom{7}{2} = 21$ chords that connect two of these points. Four of these $21$ chords are selected at random. What is the probability that these four chosen chords form a bow-tie quadrilateral?
Four chosen chords form a bow-tie quadrilateral 2210 .
What is a quadrilateral?A quadrilateral is a polygon having four sides, four angles, and four vertices. The word 'quadrilateral' is derived from the Latin words 'quadri,' which means four, and 'latus', which means side. The above image is an example of a quadrilateral.The bowtie, or crossed rectangle, is a nonconvex semi-uniform quadrilateral with the same vertices as a rectangle but with two of the original sides removed and with the original's diagonals in place instead.Given,
We are aware that a quadrilateral requires four vertices (or points on the circle). The cross can always be connected in one of two ways: horizontally or vertically. My understanding of combinations is inadequate, but we can deduce that picking four points from a possible seven equals 21. Four points can be used to create 21*2 = 42 "bow-tie quadrilaterals" on the circle by multiplying the two methods to join those lines (again, horizontally and vertically). Since there are 2210 possible combinations of four chords out of a possible 21 chords, the probability is 42/2210, and we just need to reduce that fraction.Therefore, Four chosen chords form a bow-tie quadrilateral 2210 .
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The probability that the four chosen chords form a bow-tie quadrilateral is: 60%.
First, let's calculate the total number of ways to choose four chords out of the 21 available chords.
= 21!/ 4! (21-4)!
= 21! / 4! 17!
= 5985
The number of ways to choose two intersecting chords can be represented as [tex]\binom{7}{2}.[/tex]
= 7! / (7-2)!
= 7!/ 5! 2!
= 7 x 6/ 2
= 21
However, we also need to account for the fact that we are choosing four chords in total.
So we need to choose two more chords from the remaining 19 chords.
C(19, 2)= 19!/{2!(19-2)!
= 19! / 2! 17!
= 19 x 18 /2
= 171
Now, the number of ways to choose four chords that form a bow-tie quadrilateral
= 21x 17
= 3591
Therefore, the probability that the four chosen chords form a bow-tie quadrilateral is:
= [tex]$\frac{\text{Number of ways to choose four chords forming a bow-tie quadrilateral}}{\text{Total number of ways to choose four chords}}[/tex]
= 3591/5985
= 0.600
So, the probability is 0.600, or 60%.
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work out the length of AB. give your answer to 3 significant figures.
Answer:
Distance formula = √(x₂ - x₁)² + (y₂ - y₁)²
(x₁, y₁) = (1, 7) and (x₂, y₂) = (10, 3)
AB = √(10 - 1)² + (7 - 3)²
= √9² + 4²
= √81 + 16
= √97
= 9.85
Help please, Topic: Arrangments
Answer: B: 120
Step-by-step explanation:
You multiply these choices together to get your result: 5 x 4 x 3 x 2 (x 1) = 120.
Since there are 5 choices to choose from.
Are these ratios equivalent?3 feet every 4 seconds,15 feet every 20 seconds.
Answer:
Hey there!
These ratios are equivalent.
The given ratio is 3:4
If we multiply both sides by 5, we will get 15:20.
Thus, the ratios are equivalent.
Let me know if this helps :)
Answer:
What does the tense of the underlined verb reveal about the subject?
The event took place in the past continuously but concluded prior to another past event.
The event took place in the past continuously.
The event concluded prior to another past event.
The event has been completed.
Step-by-step explanation:
Aiyanna wrote the ratio 3:5 to compare the number of pairs of shorts that she owns to the number of pairs of jeans that she owns. Which is equivalent to Aiyanna's ratio?
Answer:
3/5
3:5 and 3/5 and 0.6 are the same thing just in different forms
You can convert by putting it into a fraction and dividing the fraction
3:5 becomes 3/5 and 3 divided by 5 = 0.6
Hope this helps
Step-by-step explanation:
.
What are the similarities and differences of a chord, a secant, and a tangent of a circle?
Answer:
Similarities -
There is a line that touches a circle at least once
They are all straight lines
DIfferences -
Chord: line segment whose endpoints both lie on the circle
Secant: a line that intersects a circle at two points
Tangent: A line which touches a circle at just one point
Step-by-step explanation:
Answer:
A chord is an internal segment of a circle that has both of its endpoints on the circumference of the circle.
A secant of a circle is any line that intersects a circle in two places.
A tangent to a circle is a line that intersects a circle in exactly one point, called the point of tangency.
Step-by-step explanation:
Please pick me brainliest. I really hope this helps. Sorry if i'm late though.
Stay safe>w<
Write a direct variation equation that relates x-miles and y- kilometers.
Answer:
Step-by-step explanation:
is this the whole question or is there answers i will edit this once i know
In the diagram of circle A, what is m?
Answer:
upload ur diagram so we can solve it for u
20 poinst plzzzzzz help me
Answer:
Step-by-step explanation:
Jason saw a shoes tat cost 41 dollars, he already ave 19 dollars in his saving account, his neighbor asked him to walk the dog for 4 dollars an hour, how many hours Jason need to walk the dog so e will be able to buy the shoes?
4x+19≥41
second one: A sign on abridge says that max. weight is 41 ton, a truck weighs 19 ton without any loads, the driver needs to pass by the bridge loading 3 boxes, how much the boxes should weigh so he will be able to pass the bridge.
3x+19≤ 41
third riddle: A cellphone company charges 19 dollars , and charge 0.05 cents for every text message. what limit of text message jason needs to keep his bill under 41 dollars.
19+0.05≤41
How do we do with this formula? Help me with A pls
Gradient is the slope, which is the letter m in the equation.
The point is written as (x1, y1) so replace x1 and y1 in the equation with the numbers in the given point.
A would be y - 1= 2(x-4)
B: y +5 = 5(x-2)
C: y-1= -3(x+1)
D: y -6 = 1/2(x-1)
E: y +1/4 = -2(x-3:4)
F: y+7 = -1/5(x+ 3)
Answer:
find all the equation placing each one
Step-by-step explanation:
for eg in no a
gradient is 2
point is (4,1)
so the point (4,1) is (x1,y1)
using formula
y-y1=m(x-x1)
y-1=2(x-4)
y-1=2x-8
therefore 2x-y-7=0 is the required equation
now do all of the above like this
hellpmeh i kinda get it
Answer:
1/2 or 50%
Step-by-step explanation:
5 are lower than 60
and 5 are =/> 60
Answer:
1/2
Step-by-step explanation:
54,56,60,65,30,55,55,65,66 and 65
then place them in order from least to greatest
30,54,55,55,56,60,65,65,65 and 66
and to average they seem to grow equally over and under sixty inches.
IF YOU ANSWER THE QUESTIONS ALL CORRECT I WILL MARK YOU BRAINIEST!
1. What is the interquartile range of the data set shown? {3,4,4,5,7,10,11,12,15}
2. What is the upper quartile of this data set? {66,66,67,69,70,72,72,73,75}
3. What is the lower quartile of the following data set? {23,23,24,27,31,33,34,38,40}
Answer:
IQR = 7.5
UQ = 72
LQ = 24
Answer:
1. 7.8888888888889
2. 70
3.23,23,24,27,31,33,34,38,40
Triangle M' is the image of triangle M under a dilation.
What is the center of the dilation?
A
B
C
D
Answer:
B
Step-by-step explanation:
trust me
The center of dilation of the figure M' is B thus option (B) is correct.
What is the transformation of a graph?Transformation is rearranging a graph by a given rule it could be either increment of coordinate or decrement or reflection.
If we reflect any graph about y = x then the coordinate will interchange it that (x,y) → (y,x).
As per the give M and M'.
If we draw a line of the same corner points of M' and M then it goes from point B.
So it is clear that M is dilated with respect to point B.
Hence "The center of dilation of the figure M' is B".
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Equation 3 should represent a parabola that is a vertical stretch of the parent function and has a y-intercept greater than 3 and opens down. Equation 3:___________________________________________________________________ What strategy are you using to solve this equation and why? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Show your work and solution for solving this equation:
Answer:
The answer is given below
Step-by-step explanation:
The equation of a quadratic function is given by:
Ax² + Bx + C where A, B and C are the coefficients of the quadratic equation. If the coefficient of x² (i.e A) is a negative value then the graph opens down, the value of C determines the y intercept.
The equation of a parabola with y-intercept greater than 3 and opens down can be given as -2x² -6x + 4. Since the coefficient of x² is negative it opens down and C = 4, it has a y intercept of 4 > 3
Let us assume a vertical stretch of 2, the new equation becomes:
2(-2x² -6x + 4)
-4x² - 12x + 8
To solve:
-4x² - 12x + 8 = 0
A = -4, B = -12 and C = 8
Using the quadratic formula:
[tex]x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}\\ x=\frac{-(-12) \pm \sqrt{(-12)^2-4(-4)(8)} }{2(-4)}=\frac{12 \pm 16.49}{-8} \\x= -3.6 \ or \ x=0.6[/tex]
What is the 7th term in the sequence of square numbers?
Answer:
49
Step-by-step explanation:
The n th term of square numbers is calculated using
[tex]a_{n}[/tex] = n²
Thus for the 7 th term, let n = 7 , that is
a₇ = 7² = 49
List below are the speeds (mi/h) measured from southbound traffic on I-280 near Cupertino, CA. Use the sample data to construct a 99% confidence interval estimate of the population standard deviation: speeds 62, 58, 58, 56, 60, 53, 58
Answer:
The 99% confidence interval of the population standard deviation is 1.7047 < σ < 7.485
Step-by-step explanation:
Confidence interval of standard deviation is given as follows;
[tex]\sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{1-\alpha /2}^{}}}< \sigma < \sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{\alpha /2}^{}}}[/tex]
s = [tex]\sqrt{\dfrac{\Sigma (x - \bar x)^2}{n - 1} }[/tex]
Where:
[tex]\bar x[/tex] = Sample mean
s = Sample standard deviation
n = Sample size = 7
χ = Chi squared value at the given confidence level
[tex]\bar x[/tex] = ∑x/n = (62 + 58 + 58 + 56 + 60 +53 + 58)/7 = 57.857
The sample standard deviation s = [tex]\sqrt{\dfrac{\Sigma (x - \bar x)^2}{n - 1} }[/tex] = 2.854
The test statistic, derived through computation, = ±3.707
Which gives;
[tex]C. I. = 57.857 \pm 3.707 \times \dfrac{2.854}{\sqrt{7} }[/tex]
[tex]\sqrt{\dfrac{\left (7-1 \right )2.854^{2}}{16.812}^{}}}< \sigma < \sqrt{\dfrac{\left (7-1 \right )2.854^{2}}{0.872}}[/tex]
1.7047 < σ < 7.485
The 99% confidence interval of the population standard deviation = 1.7047 < σ < 7.485.
Hurry please!!!!!!!!❗️❗️
Which situations can represent the expression n+2? Check all that apply
Ramya's grade increased by two points
the difference between Escher's highest score and two
the number of chapters Wally read plus two more
two fewer than the maximum number of absences Ellie is allowed
two added to Allison's age.
the sum of Mikel's height and two
Answer:A,C,E,i think F
Step-by-step explanation:
Answer all please number 2
Answer:
(a) 26.43%
(b) 189 seconds
Step-by-step explanation:
(a) Data
mean: 3 minutes and 48 seconds = 3*60 + 48 = 228 s standard deviation, sd: 19 svalue of interest, x: 4 minutes = 4*60 = 240 sZ-score is calculated as follows:
z = (x - mean)/sd
z = (240 - 228)/19
z = 0.63
We want to find the next probability P(Z>0.63), which is equivalent to 1 - P(Z≤0.63)
From table, 1 - P(Z≤0.63) = 1 - 0.7357 = 0.2643 or 0.2643*100 = 26.43%
(b) We want to find z1 at which P(Z≤z1) = 0.2. From the second table, z1 is between -2.05 and -2.06.
z = (x - mean)/sd
-2.055 = (x - 228)/19
(-2.055)*19 + 228 = x
x = 189 s
HURRYYYYY FOR 25 POINTSSS Once simplified, which of the expressions below is equal to 2x+8? Select all that apply. A) 4(2x+8) B) 2(x+4) C) 3(3x+5)−7x–7 D) 6x–4–4x+4
Answer:
B) 2(x+4)
C) 3(3x+5)−7x–7
Step-by-step explanation:
B) 2(x+4) = 2x + 8
C) 3(3x+5)-7x-7
= 9x +15 - 7x - 7
= 9x - 7x + 15 - 7
= 2x + 8
Answer:
B and C
Step-by-step explanation:
1. B is one of the answers because when you distribute the 2, the expression simplifies to 2x+8.
2. (C) When you distribute the 3 through the parenthesis, the expression simplifies to 9x+15-7x-7. Next, subtract the like terms. 9x-7x=2x and 17-7=10. Now this simplifies the expression to 2x+8.
Express 3*(4*5) as a common fraction given a*b= (ab)/(a+b) .
Sorry, not sure I understand. (ab)/(a+b) is NOT equal to a*b, as a*b is the same thing as ab.
Which expression is equivalent to (One-sixteenth) Superscript negative 4? (–16)4 164 RootIndex 4 StartRoot one-sixteenth EndRoot Negative (one-sixteenth) Superscript negative 4
Answer:
The simplified form of the expression is (16)⁴ or 65536
Step-by-step explanation:
The given expression to us is:
(1/16)⁻⁴
As the options given in this question are not clear enough, I'll just simpify the expression which you can compare with the given options in the question and find the best option as an answer.
We know that a negative power of number can be converted into a positive one by taking the reciprocal of that number.
It can be written as:
(16)⁴
which can be further simplified to:
65536
Answer: the answer is B
Step-by-step explanation:
16^4
If it takes 13 cup of flour to make 14 of a cake, how many cups of flour are needed to make a whole cake? i need help plz
Answer:
1-1/3 if its 14
1/52 if its 1/4
Step-by-step explanation:
Explain the translation shown in the picture below
Answer: 2/-2 x is always on the top y is always on the bottom on the x axis it moves 2 spaces in the positive direction in the t axis it moves 2 spaces down in the negative direction
PLSSS HELP!!! I really need help with this i have tried everything! Please provide instructions so I could learn how to do it! You are interested in finding a 98% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 11 randomly selected college students. Round answers to 3 decimal places where possible. 9, 1, 2, 2, 9, 10, 1, 3, 7, 4, 2 a. To compute the confidence interval use a ? distribution. b. With 98% confidence the population mean number of days of class that college students miss is between ? and ? days. c. If many groups of 11 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About ? percent of these confidence intervals will contain the true population mean number of missed class days and about ? percent will not contain the true population mean number of missed class days.
Step-by-step explanation:
a. When the sample size is below 30 or the population standard deviation is not known, use a t distribution rather than a normal distribution.
b. The confidence interval is:
CI = x ± CV × SE
where x is the sample mean,
CV is the critical value (in this case, t).
and SE is the standard error (the sample standard deviation).
For the data given, the mean is x = 4.545, and the standard deviation is SE = 3.503.
There are 11−1 = 10 degrees of freedom, and the confidence level is 98%. For a t-table, the critical value is CV = 2.764.
So the confidence interval is:
CI = 4.545 ± 2.764 × 3.503
CI = (-5.1, 14.2)
c. The confidence level is 98%, so 98% of these confidence intervals will contain the true population mean, and 2% will not.
What value or values of x satisfy 2x + 5.31 = 4.2?
ESBE
x can only equal -3.2.
x can only equal 7.4.
O x can equal -3.2 or -7.4.
O x can equal -3.2 or 7.4.
Answer: x can equal -3.2 or -7.4.
Step-by-step explanation:
The correct expression is:
2|x+5.3|=4.2
So, we have an absolute value equation, where it can be positive or negative:
Positive2 (x+5.3)=4.2
2x+10.6 =4.2
2x=4.2-10.6
2x = -6.4
x= -6.4/2
x = -3.2
Negative2[-(x+5.3)]=4.2
-2x-10.6 =4.2
-2x= 4.2+10.6
-2x= 14.8
x= 14.8/-2
x= -7.4
x can equal -3.2 or -7.4.
Feel free to ask for more if needed or if you did not understand something.
Answer:
(C)
Step-by-step explanation:
x can equal –3.2 or –7.4.
It Was Correct On Edge
A real friend is one who walks in when the rest of the world walks out
HAVE A GREAT DAY :)
Determine the measure of ∠A. ANSWWER: 1) 192° 2) 88° 3) 84° 4) 168°
Answer:
3) 84°
Step-by-step explanation:
The angle formed by a chord and a tangent measures half of the intercepted arc.
m<A = (1/2)m(arc) = (1/2) * (168 deg) = 84 deg
Answer:
84 degrees
Step-by-step explanation:
What is the difference between profit and revenue?
Revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production costs.
Revenue is the total amount producers earn after subtracting the production costs. Profit is the total amount producers receive after selling a good.
Revenue is the total amount producers pay to manufacture a good. Profit is the total amount producers earn after subtracting the production costs.
Revenue is the total amount producers pay to manufacture a good. Profit is the total amount producers receive after selling a good.
Answer:
Revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production costs.
Step-by-step explanation:
Profit, or net gain, is the amount of money made after subtracting production costs.
Revenue is the total amount of money earned, or gross weight, before anything is subtracted for production costs.
Answer:
The revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production cost.
Step-by-step explanation:
To answer the question, let us picture that you have a business, and you sell bread.
If you sell bread for $5 per loaf, and you sell 2 loaves, your revenue will be 2 * 5 = $10.
Let's say that in order to bake the bread, you have to rent your neighbor's oven for $0.25 per hour, the flour costs $1 per loaf, and the yeast costs $1 (these are all made-up numbers). If each loaf takes one hour to bake, two loaves will cost 0.5 + 2 + 2 = $4.50 to make. Your profit will then be your revenue minus your cost, or 10 - 4.5 = $5.50.
From this scenario, we can see that the revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production cost.
Hope this helps!
SOMEONE PLEASE HELP ME ASAP PLEASE!!
Answer:
hope its helpful to uh..