Answer:
2/5
Step-by-step explanation:
1/5 · 2/1 = 2/5
Good luck, I hope this helps :)
The radius of the clock is 6.5 inches. What is the circumference?
A.
40.82 in
B.
132.67 in
C.
84.5 in
D.
20.41 in
Answer:
circumference=2πr=2×22/7×6.5=40.8571428571
option
A.
A.40.82 in
is your answer.
Step-by-step explanation:
the formula for the circumference of a circle for just the radius is
2r(pie)
so just insert 6.5 for r
2(6.5)(pie)
40.82
Hope that helps :)
Which is the largest interval over which the function shown in the table is decreasing?
Answer:
c
Step-by-step explanation:
Because to make the same we have to have x as 1 which is x>0
I completely forgot how to do this stuff
Answer:
Step-by-step explanation:
is AB tangent to the circle?
Answer:
Yes, AB is tangent to the circle
Step-by-step explanation:
If AB is tangent to the circle, the triangle will be a right triangle, so if:
11.4² + 15.2² = 19²
129.96 + 231.04 = 361
361 = 361
so it is tangent
find the degrees of the marked angle
Answer:
n=82
m=98
e=98
Step-by-step explanation:
n is vertical to 82
180-82=m and e because they are suplementery angles
Answer:
∠n = 82°
∠m = 98°
∠n = 98°
Step-by-step explanation:
∠n = 82° because it is alternate to 82°
total circle = 360°
∠l =∠m
2∠m = 360° - 82° - 82° = 196°
∠m = 98°
∠n = 98°
Sean traded 1/7 of his baseball cards. What percentage of his baseball cards did Sean trade?
Answer:
Step-by-step explanation:
14%
Recall the Akaike information Criterion (AIC) as well as the related Bayesian Information Criterion (BIC) from our study of Variable Selection and Model Building. Without heavy mathematical notation, explain how both the AIC and BIC emphasize goodness-of-fit of a regression model while also controlling model complexity. Why would we wish to do this (that is, to promote goodness-of-it while at the same time controlling model complexity)
Step-by-step explanation:
To check out how efficient or accurate a model is, we use the akaike information criterion or the Bayesian. If the AIC or BIC are lower, then this model would be better. They are also used to control for model complexity
Akaike information criterion = 2k-2ln where k is the number of parameter. A higher k gives a higher AIC.
In the real world complex models are discouraged and avoided since
1. They cause data to be over fitted and can capture noise and information from this data.
2. They are complex and therefore difficult to interpret
3. They consume a lot of time and computing them has several inefficiencies.
Using these two as measure of performance, we can select optimal choice of independent variable.
With forward/backward regression, we are able to put new variables in the model or remove from it. The best is the one with lowest AIC.
Question 1(Multiple Choice Worth 4 points)
(07.05A)
NEED HELP FAST!!
Which of the following has a graph that is a straight line?
Equation 1: y = 4x3 + 6
Equation 2: y = 5x − 4.5
Equation 3: y2 = x − 1
Equation 4: y = 2x2 + 6
Answer:
Equation 2: y= 5x - 4.5
Step-by-step explanation:
This is a correct linear function. I would think this equation is linear because it goes by the f(x)=mx+b formula.
Answer: It would be equation B!
Step-by-step explanation:
Took the test and got it right! Hope this helps^
your answer.
If x=-3 and y=-4, then xy - 2x =
-6
6
18
24
Answer:
18
Step-by-step explanation:
xy = -3 x -4 = - 12
2x = -3 x 2 = -6
-12 - 6 = 18 (2 negatives make a positive)
Randall enjoys canoeing. The time it takes for his canoe to go 3 miles upstream and back 3 miles downstream in a lake is 4 hours. The current of the lake is 1 miles per hour. Which equation can Randall use to determine the average speed of the canoe in still water?
The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
SpeedSpeed is the ratio of total distance travelled to total time taken. It is given by:
Speed = distance / time
Let t₁ represent the time upstream and t₂ the time downstream while a represent the average speed of the canoe in still water.
Hence:
t₁ + t₂ = 4 (1)
Also:
(a - 1)t₁ = 3 (2)
(a + 1)t₂ = 3 (3)
The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
Find out more on speed at: https://brainly.com/question/4931057
Can someone please give me the answer I’m giving brilliant for correct answer
Answer:
the last one (1,2)
Step-by-step explanation:
.......................
Answer:
C (-1,-2)
Step-by-step explanation:
The fourth vertex should be on the same Y value as the 2nd vertex and the same X value as the 3rd vertex so it should be (-1,-2)
I really need help. Please!
help please I need to pass
9514 1404 393
Answer:
33.49 ft³
Step-by-step explanation:
Use the formula for the volume of a sphere and fill in the given numbers. After that, it's all arithmetic. A calculator is usually helpful.
[tex]V=\dfrac{4}{3}\pi r^3\\\\V=\dfrac{4}{3}(3.14)(2\text{ ft})^3=\dfrac{(4)(3.14)(8)}{3}\text{ ft}^3\\\\=\boxed{33.49\text{ ft}^3}[/tex]
A certain process for manufacturing integrated circuits has been in use for a period of time, and it is known that 12% of the circuits it produces are defective. A new process that is supposed to reduce the proportion of defectives is being tested. In a simple random sample of 100 circuits produced by the new process, 11 were defective.
a. If the proportion of defectives in the sample is less than 12%, it is reasonable to conclude that the new process is better.
1. True
2. False
b. If the proportion of defectives in the sample is only slightly less than 12%, the difference could be due entirely to sampling variation, and it's not reasonable to conclude that the new process is better.
1. True
2. False
c. If the proportion of defectives in the sample is a lot less than 12%, it is very unlikely that the difference is due entirely to sampling variation, so it is reasonable to conclude that the new process is better.
1. True
2. False
Answer:
a. If the proportion of defectives in the sample is only slightly less than 12%, the difference could be due entirely to sampling variation, and it's not reasonable to conclude that the new process is better
b. True
c. True
Step-by-step explanation:
a. The percentage of defective circuits produced = 12%
Given that the percentage of defective circuits produced in the new process is 11% which is only slightly less than the observed 12%, the difference may be due to variation in the sample, as another sample of 100 in the new process cold produce more than 11 defective circuits
b. True. In every sample, there is a slight variation which can account for the difference
c. Given that the defectives in the sample is considerably less than 12%, then it would be more statistically evident that there is a difference in the two processes and the new process can be considered reasonably better
Therefore, the answer is; True
which number line shows the solution of 5x - 25 < -15
What is the measure of the missing angle?
101°
32°
?
imagine a triangle
Answer:
It is 47°
Step-by-step explanation:
Thanks alot for the question :)
Finley's pumpkin had a mass of 6.5 kilograms (kg) before he carved it. After carving it, the pumpkin had a mass of 3.9 kg
Answer:
[tex]\%Change = -40\%[/tex]
Step-by-step explanation:
Given
[tex]Initial = 6.5kg[/tex]
[tex]Final = 3.9kg[/tex]
Required
Determine the percentage change --- Missing from the question
This is calculated as
[tex]\%Change = \frac{Final - Initial}{Initial} * 100\%[/tex]
[tex]\%Change = \frac{3.9kg - 6.5kg}{6.5kg} * 100\%[/tex]
[tex]\%Change = \frac{-2.6kg}{6.5kg} * 100\%[/tex]
[tex]\%Change = \frac{-260}{6.5}\%[/tex]
[tex]\%Change = -40\%[/tex]
solve -4(x+2)-2x+4 plzzzzzzzzzzzzzzzzzzzz
Answer:
-6x-4
Step-by-step explanation:
Answer:
-6x-4
Step-by-step explanation:
Which measure is the largest? 1.2km, 1,220,000mm or 120 meters 120,600cm
Algebra find the value of x in each figure .
Answer:
x= 54°
Step-by-step explanation:
43 + x - 7 = 90°
36 + x = 90°
x= 90-36
x= 54°
Answer:
54
Step-by-step explanation:
90-43 = 47
x-7 = 47
x=47+7
x = 54
If 8x = 48, then x = . (Only input whole number) (1 point)
Answer:
6
Step-by-step explanation:
48/8 8x/8
6 x
x=6
what the total area of a rectangular prism with a hight of 17feet a width of 12 feet and a thickness of 10 feet ?
Answer:
988ft^2
Step-by-step explanation:
Total area of a rectangular prism = 2(lw+wh+lh)
length l = 17feet
width w = 12feet
thickness = 10feet
TSA = 2(17(12)+17(10) + 12(10))
TSA = 2(204+170+120)
TSA = 2(494)
TSA = 988ft^2
Hence the total surface area is 988ft^2
Charlotte walks home from school every day at a rate of
4 miles per hour. It takes her 30-minutes to reach
home. Her brother, Noah, runs home from the same
school every day at a rate of 6 miles per hour. How
many fewer minutes does it take Noah than Charlotte
to reach home from school each day? Be sure to
SHOW your WORK!
Answer:
It takes 10 fewer minutes for Noah than for Charlotte to home from school each day.
Step-by-step explanation:
We use the following relation to solve this question:
[tex]v = \frac{d}{t}[/tex]
In which v is the velocity, d is the distance, and t is the time.
Finding the distance:
Charlotte walks home from school every day at a rate of 4 miles per hour. It takes her 30-minutes to reach home.
This means that [tex]t = 0.5, v = 4[/tex]. Time is 0.5 because as the velocity is in miles per hour, the time has to be in hours. We use this to find d.
[tex]v = \frac{d}{t}[/tex]
[tex]4 = \frac{d}{0.5}[/tex]
[tex]d = 4*0.5 = 2[/tex]
The distance is of 2 miles.
Her brother, Noah, runs home from the same school every day at a rate of 6 miles per hour.
We have to find t, in hours, for which [tex]v = 6, d = 2[/tex]. So
[tex]v = \frac{d}{t}[/tex]
[tex]6 = \frac{2}{t}[/tex]
[tex]6t = 2[/tex]
[tex]t = \frac{1}{3}[/tex]
A third of an hour. In minutes, this is a third of 60, that is 60/3 = 20 minutes.
How many fewer minutes does it take Noah than Charlotte to reach home from school each day?
Noah: 20 minutes
Charlotte: 30 minutes
30 - 20 = 10
It takes 10 fewer minutes for Noah than for Charlotte to home from school each day.
For what value of k are the graphs of y = 3x + 4 and 2y = kx + 9 parallel?
what is this math question -22a =462
Answer:
a = -21
Step-by-step explanation:
-22 x -21 = 462
Which is a better relative position, a score of 83 on a geography test that has a mean of
72 and a standard deviation of 6. or a score of 61 on an accounting test that has a mean of 55 and a
standard deviation of 3.5?
Answer:
i dont kknow
Step-by-step explanation:
A woman had $200. She went to a meatshop,
a bookstore and a drugstore. She spent four
times as much money at the meatshop as she
did at the drugstore. She spent $15 less at the
bookstore than at the drugstore. She then had
$5 left.
Members of the Video Digital club produce short videos. At the end
of each school year, the club hosts a Video Digital festival at a local
theater to show the community its top 25 videos.
Part A:
The club has realized from experience that when they don't charge
for admission, 800 people come. For every dollar they charge for
admission, 8 fewer people come. Write an inequality that they can
use to determine the price, p, in dollars that the club must charge for
at least 750 to come to the video festival
Lo
Answer:
Step-by-step explanation:
800-8p<750
Find the volume of the composite figure.
First, find the volume of the cylinder.
Use 3.14 for T. 9 cm
Cylinder Volume = [?] cm 8 cm 6 cm Rectangular Prism Volume = [ ]cm 8 cm 14 cm Total Volume of Composite Figure = [ ] cm3
Answer:
Volume for cylinder = 508.68 [tex]cm^{3}[/tex]
Volume of rectangular prism = 672 [tex]cm^{3}[/tex]
Total volume = 1180.68 [tex]cm^{3}[/tex]
Step-by-step explanation::
[tex]V = \pi r^{2} h[/tex] r = 4.5
= 3.14([tex]4.5^{2}[/tex]) (8) = 508.68
Volume for rectangular prism:
V = lwh = (14)(8)(6) = 672
Total volume = 508.68 + 672 = 1180.68 [tex]cm^{3}[/tex]
Write an expression equivalent to b+b+b+b+bt
4b + bt =
Hope that helps!
