Answer:
r = 3.95 ft
Step-by-step explanation:
Volume of cone = [tex]\frac{1}{3} \pi r^{2} h[/tex] = 246 ft³
246 = [tex]\frac{1}{3} * \frac{22}{7} * r^2 * 15[/tex]
r² = [tex]\frac{246*3*7}{22*15*5}[/tex]
r = [tex]\sqrt{15.65}[/tex]
r = 3.95 ft
the position vector of a particle moving in the x-y plane is <2 cos t, 4 sin t> in the interval [0,2pi). for what value(s) of t does the path of the particle have a vertical tangent?
Answer:
goof job tatatatstfndndbjxx
I need help with this math problem.
Answer:
Answer and steps in picture.
The sum of three numbers is 30. The third number is twice the second, and is also 2 less than 3 times the first. What are the three numbers?
Answer:
First: 6 Second: 8 Third:16
Step-by-step explanation:
First number:x
Second number: 1.5x-1
Third number: 3x-2
x+1.5x-1+3x-2=30
5.5x-3=30
5.5x=33
x=33/5.5=6
So First =6
Second= 1.5(6)-1=8
Third " 3(6)-2=16
Hunter took out a $3,500 loan with interest to pay for some business supplies. He will repay the loan in 3 years with monthly payments of $109.68.
Find the total amount of Hunter’s repayment as well as the amount he will pay in interest.
He will pay back ______ in total and ______ in interest.
(Can someone help me with this!! will mark brainiest)
Answer:
he will pay back $3829.04 in total and $329.04 in interest.
Step-by-step explanation:
Use the information to answer the question.
Juan has 5 counters. Carlos has 60 counters.
Carlos has how many times as many counters as Juan? Enter the answer in the box.
Answer:
22
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
Becuase it was simple math. Have a good day.
1) 3n² + 5n +7
A) quadratic monomial
B) cubic binomial
C) constant trinomial
D) quadratic trinomial
Answer:
D
Step-by-step explanation:
it is a quadratic trinomial
help me on this pls!!!
Answer:
The length of the lake is 1.8 miles.
Step-by-step explanation:
These are similar triangles.
HELP PLEASE : For numbers 3 & 4, draw a triangle for each to find the missing side.
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 1) b = 2
2) c = 20
Explanation:
I hope this helped!
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- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer:
3) b = 2.24
4) c = 15.62
Step-by-step explanation:
Pythagorean formula:
a² + b² = c²
3)
a² + b² = c²
2² + b² = 3²
4 + b² = 9
b² = 5
b = 2.24
4)
a² + b² = c²
10² + 12² = c²
100 + 144 = c²
244 = c²
c = 15.62
What is the answer please help no links no links
Determine the value of a.
What is the volume of the figure below, which is composed of two cubes with side lengths of 6 units?
A.
216 cubic units
B.
360 cubic units
C.
432 cubic units
D.
36 cubic units
what is 6,720 divided by 14??
480 because 6,720 divided by 14 is 480
The test scores of the students in four classes are summarized below. Answer the questions about them.
Class A: The mean score is 112 and the range of scores is 46.
Class B: The mean score is 110 and the range of scores is 51.
Class C: The mean score is 117 and the range of scores is 47
Class D: The mean score is 115 and the range of scores is 55
a. Based on the information above, which class's scores have the most variability?
b. Based on the information above, which class's scores have the least variability?
Answer:
Suppose that the mean score is M, and the range of scores is R.
The range is the difference between the largest score and the smallest score.
So, if the largest score is L, and the smallest score is S, we have:
R = L - S
Now, if the value of R increases, means that the difference between L and S also increases.
So having a large range usually is also a sign of having large variability.
Then:
a: Based on the information above, which class's scores have the most variability?
The class's scores with the most variability will be the class's scores with the largest range, in this case, the largest range of scores is for Class D.
b: Based on the information above, which class's scores have the least variability?
Now we need to look at the class with the least range of scores, in this case, the smallest one is the one for Class A.
Fill in the number to find the sum . 2/10 + /100= 50/100 a. 30 b. 10 c. 28 d. 52
Answer:
2/10 + 30/100 = 50/100
Step-by-step explanation:
First, you want to multiply 2/10 by 10, to get the same common denominator in both numbers, you would get 20/100. Then, its pretty simple from there, you just add the number that gets you to 50, which is 30, 20 + 30 =50. I Hope This Helps :)
The required missing number is 30. So, the correct answer is (a) 30.
Arithmetic is a branch of mathematics that deals with the study of numbers, their properties, and their operations. It involves the basic operations of addition, subtraction, multiplication, and division.
Here,
To find the missing number, we can use the fact that 50/100 is equivalent to 1/2.
So, we need to find a number that, when added to 2/10, gives 1/2 as the sum.
We can write this as an equation:
2/10 + x/100 = 1/2
Multiplying both sides by 100 to eliminate the denominator, we get:
20 + x = 50
Subtracting 20 from both sides, we get:
x = 30
Therefore, the missing number is 30. So, the correct answer is (a) 30.
Learn more about arithmetic here:
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Simplify the expression. Write your answer as a power. (-3)⁴/ (-3)¹
Answer:
(-3)^3
Step-by-step explanation:
Help me please. I kinda need it right now.!
Step-by-step explanation:
Given
[tex]5y - 4 = 126(corresponding \: angles) \\ 5y = 126 + 4 \\ 5y = 130 \\ y = 130 \div 5 \\ = 26[/tex]
Also given
[tex]126 + (6z + 6) = 180(angles \: on \: a \: straight \: line) \\ 132 + 6z = 180 \\ 6z = 18 0 - 132 \\ 6z = 48 \\ z = 48 \div 6 \\ = 8[/tex]
Lastly,
[tex]x = 180 - 126 \\ = 54(angles \: on \: the \: same \: straight \: line \: and \: corresponding \: angles)[/tex]
Answer:
x = 126
y = 26
z = 8
Step-by-step explanation:
6z + 6 + 126 = 180
6z + 132 = 180
6z = 180 - 132
6z = 48
z = 8
6z + 6 + 5y - 4 = 180
6(8) + 6 + 5y - 4 = 180
48 + 2 + 5y = 180
50 + 5y = 180
5y = 180 - 50
5y = 130
y = 26
x = 126 (Because of alternate exterior angles thm)
What is the 20th term of the linear sequence below?
1, 7, 13, 19, 25, ...
Answer:
115
Step-by-step explanation:
1, 7, 13, 19, 25...
1, 1+6, 1+6+6, 1+6+6+6, 1+6+6+6+6...
In 2nd number, 1 plus one 6
In 3rd number, 1 plus two 6s
:
In 20th, 1 plus nineteen 6s
1 + 6 × 19 = 115
Help with the calculus problem please
The area of the region is equal to the area under the curve y = cos(x) over the interval 0 ≤ x ≤ π/6, given by the integral
[tex]\displaystyle\int_0^{\frac\pi6}\cos(x)\,\mathrm dx = \sin(x)\bigg|_0^{\frac\pi6}=\sin\left(\frac\pi6\right)-\sin(0)=\boxed{\frac12}[/tex]
which follows from
• the fact that d/dx [sin(x)] = cos(x)
• the fundamental theorem of calculus
A recent article published in Berry Weekly reported a probability distribution for the different types of jelly that
individuals prefer. Editors from a competitive magazine, Jammin, conducted their own study to test the
distribution. The editors from Jammin surveyed a random sample of 50 individuals and recorded the observed
counts of individuals for each jelly type. They decided to test Berry Weeklys claim using a chi-square goodness-
of-fit test using Jammin's observed counts compared with the number of expected counts based on the Berry
Weekly data.
Answer:
Step-by-step explanation:
The distance between itahari and Damak is
42 km. Mr. Dhamala travelled 18.325 km by a
bus / 15.675 km by a toxi and the re
remaining dis-
tance by a motorbike How many km did he
travelled ky motorbike?
Answer:
8 km by motorbike.
Step-by-step explanation:
The distance between itahari and Damak is 42 km.
Mr. Dhamala travelled 18.325 km by a bus / 15.675 km by a taxi and the remaining distance by a motorbike.
Let he covered x distance by motorbike. So,
Remaining distance = Total distance -(distance covered by bus + distance by taxi)
= 42 -(18.325 +15.675 )
= 42-34
= 8 km
So, he travelled 8 km by motorbike.
PLEASE HELP !! ILL GIVE BRAINLIEST !!
Answer:
117
Step-by-step explanation:
angle 2 = 117 so angle 1 has to =63 because they have to equal 180 (supplementary angles)
angle 1 =63 . angle 3 =117
angle 7 is the same measurement of angle 3
hope this makes sense
Answer:
117 degrees
Step-by-step explanation:
angle 1 and 2 are supplementary angles which are angles whose measurements add up to 180 degrees
this means angle 1 = 63 degrees
63 + 117 = 180
angle 1 and 3 are linear pair angles which means they also equal 180 degrees
angle 3 = 117 degrees
angle 3 and angle 7 are corresponding angles which means their degrees are equal to each other
angle 7 = 117 degrees
The relationship between angle 2 and 7 would be alternate exterior angles
A man invests $16 800 in a saving plan that pays simple interest at a rate of 5%. Find the time taken for his investment to grow to $18 900.
Please explain
Answer:
2.5 yearsStep-by-step explanation:
Given
Investment P = $16800Interest rate r = 5% = 0.05 Final amount A = $18900Time t = ?Use the formula
A = P(1 + rt), where A - final amount, P - investment, r- interest rate, t- timeSubstitute the given numbers and solve for t:
18900 = 16800( 1 + 0.05t)1 + 0.05t = 18900/168001 + 0.05t = 1.1250,05t = 0.125t = 0.125/0.05t = 2.5 years
Repeated-measures and matched-subjects experiments
Repeated measures experiments measure the same set of research participants two or more times, while matched-subjects experiments study participants who are matched on one or more characteristics. Which of the following are true for both a repeated-measures experiment and a matched-subjects experiment when used to compare two treatment conditions?
A. If the researcher has n number of participants to use in the experiment, then the degrees of freedom will be the same in a repeated-measures experiment or in a matched-subjects experiment.
B. The researcher must compute a pooled variance to compute a t statistic.
C. The researcher must compute an estimated standard error for the mean difference score to compute a t statistic.
D. Participants in both types of experiments are all measured the same number of times.
A matched-subjects experiment produced at statistic with a df of 13. How many subjects participated in this study?
a. 13.
b. 28.
c. 26.
d. 14.
For a repeated-measures experiment comparing two treatment conditions, the t statistic has a df of 17. How many subjects participated in this study?
a. 18.
b. 17.
c. 36.
d. 34.
Please help atleast tell me what the sum is
Answer:
x = 36
Step-by-step explanation:
Hi,
3x-26 + 3x - 10 = 180
6x - 36 = 180
6x = 216
x = 36
hope this helps :)
Answer:
6x-36 is your answer
Step-by-step explanation:
1. remove unnecessary parentheses
2. combine like terms
3. factor
4. your answer
Which is the sum of 14t/10t^2 + 5t^2+40t/10t^2
Answer:
7t/5^3 + 5t^2 + 4t^3
Step-by-step explanation:
The length of a rectangle is twice its width.
If the perimeter of the rectangle is 60 m, find its length and width.
WILL MARK THE BRAINLIEST!!!
Answer:
W = 10
L = 20
Step-by-step explanation:
2L + 2W = 60
L = 2W
Substitute for L in the first equation
2(2W) + 2W = 60
4W + 2W = 60
6W = 60
W = 10
Plug in W in the first equation
2L + 2(10) = 60
2L + 20 = 60
2L = 40
L = 20
Plug both answers in both equations to check
2(20) + 2(10) = 60
20 = 2 * 10
Hope that helps!
please help want to know if this is correct the resultant of 2 forces 60N East and 20N East is 40N East
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it's not possible
I think -7 is the right answer but it's not possible actually
Answer:
c. -7
Step-by-step explanation:
(x+57) + (63+67) = 180
(x+57) + 130 = 180
x + 187 = 180
x = 180-187
x = -7
why did I make it equal to 180?
all the angles in a triangle always equal 180 :)
what is the area of a square that is 2 feet length and 7 1/4 feet width
An aquarium 4 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half of the water out of the aquarium. (Use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3). Show how to approximate the required work by a Riemann sum.
Express the work as an integral.
Evaluate the integral.
Answer:
Workdone = 4900joules
Step-by-step explanation:
Work-done = force x distance
Force = mass x acceleration
If we suppose that the aquarium is at height 0 at the top and height 1 at the bottom (since it's 1m deep), then we need to lift the slide at height x by x metres.
Mass = Density x Volume, therefore force needed to lift the slice is given is
F = density*volume*∆x*acceleration
Since we the mass changes as we take out water then there will be a change in height, for this reason we have ∆x.
Acceleration is due to gravity, therefore g=9.8m/s²
Density = 1000kg/m³
Volume = 4*1*1 = 4m³
F = 1000*4*∆x*9.8 = 39200∆x
Since our distance from the top of the aquarium to the bottom is x metres, then
Work-done = 39200x∆x
To find the total workdone, we find the integral of 39200xdx and the limit will be from 0 to 0.5 since we are to pump halfway of the aquarium. Integrating that we have
19600*x² limit from 0 to 0.5
19600(0.5² – 0²) = 19600(0.25 – 0) = 19600(0.25) = 4900joules