Answer:
y= 1
Step-by-step explanation:
If it is wrong so sorry
20 points
3 A quadrilateral has vertices (-4,-4), (-6, 4), (6,8), and (10, 2). What are
the coordinates of the vertices of the image after a dilation with the
origin as the center of dilation and a scale factor of 3.5? *
O (-14, -14), (-21, 14), (21, 28), and (35, 7)
(-6, -6), (-9,6), (9, 12), and (15,3)
(-10, -10), (-15, 10), (15, 20), and (25,5)
(-12, -12),(-18, 12), (18, 24), and (30, 6)
Answer:
I'll do the dilation for the first point and you will see the answer (please verify the second point)
Step-by-step explanation:
The dilation about the origin is straightforward, you just multiply the coordinates of each point by the scale factor.
so the dilated point for (-4,-4) is -4x3.5= -14 which is the same for the y coordinate.
so the dilated point for (-4,-4) is (-14, -14)
Please verify by computing the dilated point for (-6,4)
Don’t need to show work
Answer:
44
Step-by-step explanation:
Two ride-sharing companies, A and B, provide service for a certain city. A random sample of 52 trips made by Company A and a random sample of 52 trips made by Company B were selected, and the number of miles traveled for each trip was recorded. The difference between the sample means for the two companies
(A−B) was used to construct the 95 percent confidence interval (1.86,2.15).
Which of the following is a correct interpretation of the interval?
A. We are 95 percent confident that the difference in sample means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
C. The probability is 0.95 that the difference in sample means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
D. The probability is 0.95 that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
E. About 95 percent of the differences in miles traveled by the two companies are between 1.86 miles and 2.15 miles.
3. Two community service groups, J and K, each have less than 100 members. Members of both groups volunteer each month to participate in a community-wide recycling day. A study was conducted to investigate whether the mean number of days per year of participation was different for the two groups. A random sample of 45 members of group J and a random sample of 32 members of group K were selected. The number of recycling days each selected member participated in for the past 12 months was recorded, and the means for both groups were calculated. A two-sample t-test for a difference in means will be conducted. Which of the following conditions for inference have been met?
I. The data were collected using a random method.
II. Each sample size is less than 10 percent of the population size.
III. Eachsamplesizeislargeenoughtoassumenormalityofthesampling
distribution of the difference in sample means.
A. I only
B. II only
C. III only
D. I and III only E. I, II, and III
The correct interpretation of the interval is:
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
The conditions for inference that have been met are: D. I and III only.
For the first question, the correct interpretation of the confidence interval is:
B. We are 95 percent confident that the difference in population means for miles traveled by the two companies is between 1.86 miles and 2.15 miles.
This interpretation reflects the fact that the confidence interval was constructed based on the sample means, but it provides an inference about the population means of the two companies.
For the second question, the conditions for inference that have been met are:
D. I and III only
I. The data were collected using a random method.
This ensures that the samples are representative of the population.
III. Each sample size is large enough to assume normality of the sampling distribution of the difference in sample means.
This condition implies that the sample sizes are sufficiently large to rely on the central limit theorem, which states that the sampling distribution approaches a normal distribution as the sample size increases.
Condition II, which states that each sample size is less than 10 percent of the population size, is not explicitly mentioned in the question. Therefore, we cannot assume that this condition has been met.
For similar question on confidence interval.
https://brainly.com/question/30920983
#SPJ11
John worked 43 hours last week; his hourly rate is $9. He has the following deductions taken from his pay: Social Security tax of $25, Medicare tax of $6, health insurance premiums of $15, and savings account contribution of $50. What is John’s net pay?
The eighth grade class at Washington Middle School is raffling off a turkey
as a money making project.
If the turkey cost $22 and raffle tickets are sold for $1.50 each,
how many tickets will have to be sold for the class to break
even?
Answer:
i dont know like 14?
Step-by-step explanation:
20.
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
A(n)=-6+(n-1)([tex]\frac{1}{5}[/tex])
A. –6, [tex]-5\frac{2}{5}[/tex], [tex]-4\frac{1}{5}[/tex]
B. 0, [tex]\frac{3}{5}[/tex], 1[tex]\frac{4}{5}[/tex]
C. –6, -5[tex]\frac{1}{5}[/tex], -4
D. 5, -5[tex]\frac{1}{5}[/tex], 1[tex]\frac{4}{5}[/tex]
Answer:
A. –6, ,
Step-by-step explanation:
answer is D. -6, -5 2/5, -4 1/5
A(1)=-6+(1-1)(1/5) = -6 + 0 = -6
A(4)=-6+(4-1)(1/5) = -6 + 3/5 = - 5 2/5
A(10)=-6+(10-1)(1/5) = -6 + 9/5 = -4 1/5
......................................................
...................................................................................................................................................
Find the angle measure that corresponds to 20% of a circle.
Answer: 72 degrees
Step-by-step explanation:
A circle is 360 degrees. So, 20% of 360 is 72 degrees
360 x 0.20 = 72
HELP HELP HELP!! I’ll mark brainliest!! If a combination is randomly chosen, what is the probability of someone getting a salad and a chicken sandwich?
Answer:
1/12
Step-by-step explanation:
because because you have one choice out of 12 choices and that gives you 112
The price of an item has risen to $261 today. Yesterday it was $180. Find the percentage increase
Answer:
45%
Step-by-step explanation:
Need help with this question
Answer: Well you would have to look at the options in the drop down and then find the terms and others
Step-by-step explanation:
Find the measure of the indicated arc
Answer:
m[tex]\widehat{WXY}[/tex] is 224°
Step-by-step explanation:
From the figure, we have;
The angle subtended at the circumference, by the arc mWXY, C = 112°
The angle subtended at the center = m[tex]\widehat{WXY}[/tex]
By circle theory, we have;
The angle subtended at the center = 2 × The angle subtended at the circumference
∴ m[tex]\widehat{WXY}[/tex] = 2 × 112° = 224°
m[tex]\widehat{WXY}[/tex] = 224°.
Help Please Waiting 2hours Please!
find the GCF of 30x^3 and 12x^4
Answer:6x^3
Step-by-step explanation: That’s the biggest factor that can be taken out of both equations
Y= -16x^2+181x+59 is the question
Answer:16x2 + 181x + 59
Step-by-step explanation:It cannot be factored
Answer:
Step-by-step explanation:
11.26 is the correct answer
Match these 1. supplementary angles 2.vertical angles
3. complementary angles
Angles A and B are formed by a
pair of intersecting lines, have an equal
measure of 50° and share a common
vertex angle.
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side, and have a sum
of 180°
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side and have a sum
of 90°
Answer:
Vertical Angles:
Angles A and B are formed by a
pair of intersecting lines, have an equal
measure of 50° and share a common
vertex angle.
Supplementary Angles:
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side, and have a sum
of 180°
Complementary Angles:
Angles A and B are formed by a
pair of intersecting lines, share a
common adjacent side and have a sum
of 90°
A new roller coaster has three seats in each row. The following shows how the number of seats, y, changes as the number of rows, x, changes.
Which equation shows this relationship?
A. 3y = x
B. y = x + 3
C. y = 3x
D. y + 3 = x
PLEASE HELP I'LL GIVE YOU 15 POINTS
Answer:
C. y=3xStep-by-step explanation:
I got it correct on my assignment.
I’m circle a shown, secant de and tangent dg are drawn. It is known that angle bac equals 72 degrees and arc be equals 96 degrees
Answer:
[tex]m(BC) = 72^\circ[/tex]
[tex]m\angle EBC = 168^\circ[/tex]
Step-by-step explanation:
Given
[tex]m\angle BAC = 72[/tex]
[tex]m(BE) = 96[/tex]
See attachment for circle
Required
Determine
(a) Measure of BC
(b) Measure of EBC
(a) Measure of BC
From the attachment, we can see that:
[tex]m(BC) = m\angle BAC[/tex] because they belong to the same sector
This gives:
[tex]m(BC) = 72^\circ[/tex]
(b) Measure of EBC
From the attachment, we can see that:
[tex]m\angle EBC = m(EB) +m(BC)[/tex]
Where
[tex]m(EB) = m(BE) =96^\circ[/tex]
So, we have:
[tex]m\angle EBC = 96^\circ + 72^\circ[/tex]
[tex]m\angle EBC = 168^\circ[/tex]
215% of what number is 43
Answer:
20
Step-by-step explanation:
215% of 20 is 43
Answer:
20
Step-by-step explanation:
2.15x = 43
43 divided by 2.15 is 20! :)
6 of 8
What single percentage change is equivalent to a 9% decrease followed by a 17% decrease?
Answer: your answer is 26%
26. Find the Rate when given the Interest.
Interest: $480
Principal: $1600
Time: 6 years *
(1 Point)
5%
0.05%
20%
2.0%
HELP MI PLSSS!!! I WILL GIVE POINTS AND BRAINEST!!!
Answer:
x≈5.3 feet
Step-by-step explanation:
[tex]\frac{4}{15} =\frac{x}{20}[/tex]
[tex]15x=80[/tex]
x≈5.3 feet
Answer:
5.3m tall
Step-by-step explanation:
15/4 = 3.75
20/3.75= 5.3333333
A gray crayon is made with 5mL of black wax for every 6 mL of white wax
Answer:
the answer is option B and option C
Step-by-step explanation:
hello please help thanks
Answer:
D. Precipitation
Step-by-step explanation : Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds. Energy from the sun and the force of gravity drive the continual cycling of water among these reservoirs. As the water is heated, it changes state from a liquid to a gas.
Of the 100 snakes on display at the nature center, 30% were venomous. How many of the 100 snakes were venomous?
HURRY PLEASE
Answer:
There are 30 venomous snakes.
Step-by-step explanation:
Since its 30% you can assume that its a total of 100%. So, 100 snakes would be 100%. So the total of venomous snakes are 30 total snakes. Hope this helped!! :D
Which of the following is the graph of f(x) = 3x - 4[ + 1?
Answer:
The first answer choice I think
Step-by-step explanation:
to the right 4 units
up one
vertical compression by 3
The circumference of a circle is 69.08 millimeters. What is the circle's diameter? Use 3.14 for .
Answer: 22
Step-by-step explanation: Divide the total by pi or 3.14 and the diameter is 22 and the radius is 11
A parabola can be drawn given a focus of (4, -8) and a directrix of y=-6
. What can be said about the parabola?
Answer:
y = 1/4 (x-4)² - 7
Step-by-step explanation:
Point (x , y) on the parabola, focus of (4, -8) and a directrix of y= -6
√(x-4)²+(y- -8)² = √(y- -6)²
(x-4)² + (y+8)² = (y+6)²
(y+8)² - (y+6)² = (x-4)²
(y²+16y+64) - (y²+12y+36) = (x-4)²
y²+16y+64-y²-12y-36 = 4y+28 = (x-4)²
4y = (x-4)² - 28
y = 1/4 (x-4)² - 7
standard formula of parabola: y = a(x-h)² + k (h,k): vertex (4,-7)
The value of equation of parabola is,
⇒ y = 1/4 (x-4)² - 7
What is Parabola?A parabola is a U-shaped plane curve where any point is at an equal distance from a fixed point (known as the focus) and from a fixed straight line, which is known as the directrix.
Now,
Let a point (x , y) on the parabola, focus of (4, -8) and a directrix of y= -6
Hence, We can formulate;
⇒ √(x-4)²+(y- (-8))² = √(y- (-6))²
⇒ (x-4)² + (y+8)² = (y+6)²
⇒ (y+8)² - (y+6)² = (x-4)²
⇒ (y²+16y+64) - (y²+12y+36) = (x-4)²
⇒ y²+16y+64-y²-12y-36 = 4y+28 = (x-4)²
⇒ 4y = (x-4)² - 28
⇒ y = 1/4 (x-4)² - 7
Thus, The value of equation of parabola is,
⇒ y = 1/4 (x-4)² - 7
Learn more about parabola visit:
https://brainly.com/question/29635857
#SPJ2
The compact disc format has been declining in popularity, and one music executive has predicted that CD sales will decrease by 20% per year. If the executive's company sold 29,000,000 CDs this year, how many will the company sell 9 years from now?
Answer: 3,892,314 CDs
Step-by-step explanation:
You can find this using the future value formula:
Future value = Amount * ( 1 + rate) ^ number of years
Amount = 29,000,000
Rate = -20% because it is decreasing
Number of years = 9
CDs sold in 9 years will therefore be:
= 29,000,000 * ( 1 - 20%) ⁹
= 3,892,314 CDs
the area is ___ square units
Answer:
392 square units
Step-by-step explanation:
We can make 2 right trapezoids out of this shape.
The area of a trapezoid would be 1/2×(b1+b2)×h or (b1+b2)×h ÷ 2.
If we do 1 half it would be 1/2×(14+14)×14 = 196
Now if we multiply by 2 (because we have 2 trapezoids) it would be 392.
Is 9, 16, 23, 30, an arthmetic sequence
Answer:
Yes
Step-by-step explanation: