Answers
Answer:
55 and 7.5 for number 3
Step-by-step explanation:
Related Questions
volume of a sphere with a radius of 10
Answers
Answer:
4189 cubic units
Step-by-step explanation:
Put the value in the volume formula and do the arithmetic. The formula for the volume of a sphere is ...
V = (4/3)πr³
Filling in 10 for r, we have ...
V = (4/3)π(10³) = 4000π/3 ≈ 4189 . . . cubic units
A cylindrical waste can has a volume of 5,667.7 cubic inches and its base has a radius of 9.5 inches. Find the height of the waste can. Round to the nearest tenth.
Answers
Answer:
20.0 inches
Step-by-step explanation:
The formula for the volume of a cylinder is useful here.
V = πr²h
Filling in the given numbers, we see ...
5667.7 = (3.14)(9.5²)h
Dividing by the coefficient of h, we get ...
h = 5667.7/283.385 = 20 . . . . inches
The height of the waste can is 20.0 inches.
_____
Comment on the solution
If you use a more exact value of pi, the height is closer to 19.9899 inches. It still rounds to 20.0.
For which value of x is the equation 6 = 12x true?
Answers
Answer:
x = 0.5
Step-by-step explanation:
Robert delivers papers every morning. On Sundays he has to deliver 57 papers and on each of the other days he only has to deliver 36 papers. How many papers does Robert deliver each week?
A.
309
B.
399
C.
345
D.
273
Reset Submit
Answers
Answer:
D. 273
Step-by-step explanation:
(36*6)+57
216+57
273
Paddling with the current in a river, jake traveled 16 miles. Even though he paddled upstream for an hour longer than the amount of the time he paddled downstream jake could only travel 6 miles against the current. I'm still waterJake paddles at a rate of 5 mph. What is the speed of the current I the river
Answers
Answer: the rate of the current is 3 mph.
Step-by-step explanation:
Let x represent the rate of the current.
In still water, Jake paddles at a rate of 5 mph. Paddling with the current in a river, Jake traveled 16 miles. It means that the speed with which she travelled downstream (with the current) is (5 + x) mph
Time = distance/speed
Time spent in paddling downstream is
16/(5 + x)
While paddling upstream, it took an hour longer. The speed with which he paddled upstream is (5 - x) mph.
Jake could only travel 6 miles against the current. It means that the time spent in travelling upstream us
6/(5 - x)
Since it took 1 hour longer, then
6/(5 - x) = 16/(5 + x) + 1
Cross multiplying by (5 - x)(5 + x), it becomes
6(5 + x) = 16(5 - x) + 1(5 + x)(5 - x)
30 + 6x = 80 - 16x + 25 - 5x + 5x - x²
30 + 6x = - x² - 16x + 5x - 5x + 25 + 80
30 + 6x = - x² - 16x + 105
x² + 16x + 6x + 30 - 105 = 0
x² + 22x - 75 = 0
x² + 25x - 3x - 75 = 0
x(x + 25) - 3(x + 25) = 0
x - 3 = 0 or x + 25 = 0
x = 3 or x = - 25
Since x cannot be negative, then x = 3 mph
Answer: x=3
Step-by-step explanation:
Took test
two-fifth of the students in a mixed school are boys. if there are 30 girl in the school how many are boys
Answers
Answer:
12
Step-by-step explanation:
One fifth of 30 would mean u divide 30 by 5 which equals 6. Since it's two fifths you would have 12.
A manufacturer of cheese filled ravioli supplies a pizza restaurant chain. Based on data collected from its automatic filling process, the amount of cheese inserted into the ravioli is normally distributed. To make sure that the automatic filling process is on target, quality control inspectors take a sample of 25 ravioli and measure the weight of cheese filling. They find a sample mean weight of 15 grams with a standard deviation of 1.5 grams. What is the margin of error at 90% confidence?
A. 0.3 grams
B. 0.5133 grams
C. 0.8391 grams
D. 1.5 grams
E. 0.06 grams
Answers
Answer:
A.0.39 grams
margin of error at 90% confidence intervals is
M.E = 0.39 grams
Step-by-step explanation:
Explanation:-
Given a sample of size n = 25
mean of the sample x⁻ = 15 grams
Standard deviation of the sample 'S' = 1.5 grams
margin of error at 90% confidence intervals is determined by
[tex]Margin error = \frac{t_{0.90} S.D}{\sqrt{n} }[/tex]
The degrees of freedom ν = n-1 = 25-1 =24
The tabulated value t₀.₉₀ = 1.318
[tex]Margin error = \frac{1.318X 1.5}{\sqrt{25} }[/tex]
Margin of error = 0.3954
Conclusion:-
Margin of error at 90% confidence intervals = 0.3954
Takiya recorded the heights of two sets of plants, one set planted in the shade and one set planted in full sun. Her data are shown in the plots below. A dot plot. A number line going from 1.5 to 4.5 in increments of 0.5 is labeled Heights of Shaded plants (inches). There are 0 dots above 1.5, 4 above 2, 3 above 2.5, 2 above 3, 0 above 3.5 and 4, and 1 above 4.5. A dot plot. A number line going from 1.5 to 4.5 in increments of 0.5 is labeled Heights of Full Sun plants (inches). There are 0 dots above 1.5, 1 above 2, 0 above 2.5, 2 above 3, 0 above 3.5, 4 above 4, and 3 above 4.5. Which best explains the variability of the sets? The shaded plants set has greater variability because more data is clustered around the median. The sets are equally variable because the ranges of the data sets are equal. The full sun plants set has greater variability because the IQR for full sun plants is greater. The full sun plants set has greater variability because the median for full sun plants is greater.
Answers
Answer:
c
Step-by-step explanation:
its not a b or d so its c
Answer: C
Step-by-step explanation: on edge
How is the graph of the parent quadratic function transformed to produce the graph of y=-(2x+6)? +3?
The graph is compressed horizontally by a factor of 2, shifted left 3 units, reflected over the x-axis, and translated up 3 units.
The graph is reflected over the x-axis, compressed horizontally by a factor of 2, shifted left 6 units, and translated up 3 units.
The graph is stretched horizontally by a factor of 2, reflected over the x-axis, shifted left 3 units, and translated up 3 units.
The graph is reflected over the x axis, stretched horizontally by a factor of 2, shifted left 6 units, and translated up 3 units.
Answers
Answer:
d
Step-by-step explanation:
Answer:
B on ed
Step-by-step explanation:
got D wrong on ed so it is B
1.
Solve the following inequalities:
- 4x >72
Answers
Answer:
x<18
Step-by-step explanation:
-4x>72 / divide both side ÷-4
x<-18
xe(-œ,-18)
The original price of a shirt was $20. It was decreased to $15. What is the percent decrease of the price of this shirt?
Answers
Answer:
25%
Step-by-step explanation:
Price reduction = 20 - 15 = $ 5
Percent decrease of price = (5/20)*100 = 5*5 = 25%
which of the following statements are correct? select all that apply
Answers
Answer:
sorry, but you need to show the selectings
Step-by-step explanation:
Answer:
we cant see the choices
Step-by-step explanation:
Is 17,22,29 a right triangle
Answers
Answer:
No!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
formula:
a^2+b^2=c^2
Answer:
No
Step-by-step explanation:
The only way that those side lengths formed a right triangle is if they formed a pythagorean triple. [tex]\sqrt{17^2+22^2}=\sqrt{773}\neq 29[/tex]. Therefore, that is not a right triangle. Hope this helps!
A bank offer 3% interest each yr you invest 1500. Write a equation to model this situation for x years. How much will be in the account after 10 years?
Answers
Answer:
Step-by-step explanation:
We would apply the formula for determining compound interest which is expressed as
A = P(1 + r/n)^nt
Where
A = total amount in the account at the end of t years
r represents the interest rate.
n represents the periodic interval at which it was compounded.
P represents the principal or initial amount deposited
From the information given,
P = 1500
r = 3% = /100 = 0.0
n = 1 because it was compounded once in a year.
t = x years
Therefore, the equation to model this situation is
A = 1500(1 + 0.03/1)^1 × x
A = 1500(1.03)^x
When x = 10 years, then
A = 1500(1.03)^10
A = $2016
Determine the value of the expression given below. 121 / 2÷(−1 3/8)
Answers
Answer:
-44
Step-by-step explanation:
The admission fee at an amusement park is $1.50 for children and $4 for adults. On a certain day, 272 people entered the park, and the admission fees collected totaled 758.00 dollars. How many children and how many adults were admitted?
Answers
suppose the diameter is a circle 8 units what is the circumference in units
Answers
Answer:
C = 8π
Step-by-step explanation:
C = 2πr
C = 2π(8/2)
C = 2π × 4
C = 8π
Answer:
18.84 units
Step-by-step explanation:
diameter is 6 units so radius will be 3 units.
circumference = 2πr = 2×22/7×3
= 18.84 units
The chart describes how four of Susan’s friends handle their money. Handling Money Person Description of Spending Sylvia She uses her whole paycheck to buy food and necessities and pay the minimum amount on her bills each month. Then, she buys new clothes and pays for them with a credit card. Nancy She uses her whole paycheck to buy food and necessities and then takes a trip each month, which she pays for by adding to a personal loan with her credit union. Fiona She buys food and necessities and pays more than the minimum due on her bills each month. She goes out with her friends using some of the money that is left over in her checking account. Uli She buys food and necessities and pays the minimum amount on her bills each month. She goes out with her friends using the money that is left over in her savings. Which person is most creditworthy? Nancy Sylvia Fiona Uli
Answers
Answer: C. Fiona
Step-by-step explanation:
which cannot be a cross section of the figure? A cross section of the figure cannot be a ____
Answers
Answer:
it is circle
Step-by-step explanation:
just got it correct
The first 4 terms of a geometric sequence are 108, 36, 12, 4, ... What is the eighth term of the sequence?
Answers
Answer:
4/81
Step-by-step explanation:
Answer:
32
Step-by-step explanation:
hope it helps
Help pleas this late
Answers
Answer:
V = 282.10 cm³
Step-by-step explanation:
[tex]V= \pi r^2\frac{h}{3}[/tex] Use this equation to find the volume of the cone
[tex]V=3.14(3.5)^{2} \frac{22}{3}[/tex] Simplify the (3.5)²
V = 3.14(12.25)(22/3) Multiply
V = 282.10 cm³
If this answer is correct, please make me Brainliest!
A bakery sold 340 mocha cupcakes in a day, which was 85% of the total number of cupcakes sold that day. How many total cupcakes did the bakery sell that day?
Answers
Answer:
400
Step-by-step explanation:
Given:
Number of mocha cupcakes in a day = 340
Total number of cupcakes sold that day = [tex]85\%[/tex]
To find:
Total number of cupcakes sold by the bakery
Solution:
Let x denotes total number of cupcakes sold by the bakery.
According to question,
[tex]\frac{85}{100}x=340\\x=\frac{340}{85}\times 100=400[/tex]
So,
Total number of cupcakes sold by the bakery = 400
The combination of Wendell and Maggie’s ages is 33. Wendell’s age is 3 less than 3 times the age of Maggie. How old is Wendell?
Answers
Answer:
Wendell is 24 years old.
Step-by-step explanation:
First write an equation to represent the situation.
x=Maggie's age
x+(3x-3)=33
Then solve for x
x+3x-3=33
4x-3=33
4x-3+3=33+3
4x=36
4x/4=36/4
x=9
Then solve for Wendell's age
y=Wendell's age
y=3x-3
y=3(9)-3
y=27-3
y=24
Wendell is 24 years old.
By setting up and solving a system of equations based on the information given, we find that Wendell is 24 years old.
Explanation:In this question, we are asked to find out Wendell's age. First, we assume that Maggie's age is x. According to the problem, the sum of Wendell and Maggie's ages is 33, so we can write the first equation as Wendell's age + Maggie's age = 33. Next, we know that Wendell's age is three less than three times Maggie's age, so Wendell's age = 3*x - 3. Now, if we insert Wendell's age expression from the second equation into the first equation, we get 3*x - 3 + x = 33. When we solve this equation, we found that x equals to 9, hence, Maggie is 9 years old. That means, Wendell is 33 - 9 = 24 years old.
Learn more about Solving equations here:https://brainly.com/question/18322830
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Three bags of dog food cost $26.88, including tax. Jerry has $50.00. How many bags of dog food can Jerry buy?
Answers
Answer:
1 bag
Step-by-step explanation:
Jerry only has $50.00 if 1 bag costs $26.88, even without taxes, he can only buy 1 bag because 26.88+26.88=53.76
A check is written pay to the order of Matthew Carter. Examine the check. For Mathew Carter, the check would be a . The amount would be the balance in his checking account.
Answers
Answer:The first one is deposit and the second one is added to.
Answer:
Deposit and Added To
Step-by-step explanation:
Jim had $2,052.24 in his checking account. He wrote a check to pay for
two airplane tickets. His account now has $1,084.12. How much did each
ticket cost? *
Answers
Answer:
$485.06
Step-by-step explanation:
Answer:
$484.06
Step-by-step explanation:
$2,052.24 - 1,084.12 = 916.12
916.12 divided by 2 = 484.06
Talulah is an ecologist who studies the change in the penguin population of Antarctica over time. She observed that the population decays by a factor of 8/9 every 4 months. The population of penguins can be modeled by a function, P, which depends on the amount of time, t (in months). When Talulah began the study, she observed that there were 27,000 penguins in Antarctica. Write a function that models the population of the penguins t months since the beginning of Talulah's study. P(t) =
Answers
Answer:
P(t) = 27000 * (8/9)^(t/4)
Step-by-step explanation:
The population of penguins in Antarctica decays by 8/9 every 4 months, starting from an initial count of 27,000. The function for the penguin population P(t) after t months is P(t) = 27,000 × (8/9)^(t/4).
Explanation:Talulah, an ecologist, has observed that the population of penguins in Antarctica decays by a factor of 8/9 every 4 months. To model this decay, we can use an exponential decay function. Given that the initial population (P0) is 27,000 penguins, the function P(t) that models the population at time t (in months) since the beginning of Talulah's study is:
P(t) = P0 × (decay factor)(t/rate period)
Where P0 is the initial population, the decay factor is 8/9, and the rate period is 4 months. Plugging in these values gives us:
P(t) = 27,000 × (8/9)(t/4)
This function allows researchers to predict the penguin population at any given time t months after Talulah's initial observation.
Learn more about Exponential Decay Function here:https://brainly.com/question/30929439
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which cannot be a cross section of the figure? A cross section of the figure cannot be a ____
Answers
Answer: The answer is circle
Step-by-step explanation: The explanation is that you can see by looking at the shape you can easily make a rectangle, etc but you can not make a circle :).
Answer:
circle
Step-by-step explanation:
What is the inner quartile range for 72,80,81,84,92,92,94,95?
Answers
Answer:
the inter quartile range is 12.5
Step-by-step explanation:
Twenty college students experience the effects of alcohol on reaction time. They perform very basic timed responses in a driving simulator both before and after consuming several alcoholic beverages. The researcher collects a reaction-time result for each of the 20 students before and after intoxication, for a total of 40 measures. What is the null hypothesis for this paired-samples study?
Answers
Answer:
For this case the hypothesis would be that after consuming alcoholic beverages the reaction time increases, so then the system of hypothesis for this case are:
The system of hypothesis for this case are:
Null hypothesis: [tex]\mu_y- \mu_x \leq 0[/tex]
Alternative hypothesis: [tex]\mu_y -\mu_x >0[/tex]
We can define the difference as: [tex]d_i=y_i-x_i[/tex]
And the system of hypothesis are:
Null hypothesis:[tex] \mu_d \leq 0[/tex]
Alternative hypothesis: [tex] \mu_d >0[/tex]
Step-by-step explanation:
Previous concepts
A paired t-test is used to compare two population means where you have two samples in which observations in one sample can be paired with observations in the other sample. For example if we have Before-and-after observations (This problem) we can use it.
Let put some notation
x=test value before , y = test value after
Solution to the problem
For this case the hypothesis would be that after consuming alcoholic beverages the reaction time increases, so then the system of hypothesis for this case are:
The system of hypothesis for this case are:
Null hypothesis: [tex]\mu_y- \mu_x \leq 0[/tex]
Alternative hypothesis: [tex]\mu_y -\mu_x >0[/tex]
We can define the difference as: [tex]d_i=y_i-x_i[/tex]
And the system of hypothesis are:
Null hypothesis:[tex] \mu_d \leq 0[/tex]
Alternative hypothesis: [tex] \mu_d >0[/tex]