Answer:
1.33 cups
Step-by-step explanation:
1 cup = 201 g
Answer:
1.33 cups
Step-by-step explanation:
because 1 cup is equivelent to 203grams
PLEASE HELP ASAP! 80 points!! What is the surface area of the solid that can be formed by this net? The net of a rectangular prism. It has a length of 5 inches, height of 1 inch, and width of 4 inches.
Answer:
58 inches²
Step-by-step explanation:
The formula for the surface area of a net rectangular prism is:
[tex]2(lw+hl+hw)[/tex]
l is length
w is width
h is height
[tex]2((5)(4)+(1)(5)+(1)(4))[/tex]
[tex]2(20+5+4)[/tex]
[tex]2(29)=58[/tex]
Answer:
[tex]\boxed{Surface \ Area = 58 \ in.^2}[/tex]
Step-by-step explanation:
Surface Area of Rectangular Prism = [tex]2(wl+lh+wh)[/tex]
Where l = 5 in. , h = 1 in. and w = 4 in.
SA = 2[(4)(5)+(5)(1)+(4)(1)]
SA = 2(20+5+4)
SA = 2(29)
SA = 58 in.²
A glass vase has a circular rim with a diameter of 5in. How many inches of ribbon are needed to go once around the rim? Use 3.14
Answer:
31.4 inches
Step-by-step explanation:
The circumference of a circle has the formula 2πr.
2 × π × 5
= 10 × 3.14
= 31.4
31.4 inches of ribbon is needed to go once around the rim.
Answer:
15.7 inches of ribbon.
Step-by-step explanation:
This question is basically asking for the circumference of the glass vase's rim. We can calculate that by multiplying the diameter by π, which in this case, is 3.14.
The diameter is 5 inches, so all you need to do is 5 * 3.14 = 15.7 inches of ribbon.
Hope this helps!
According to the New York Stock Exchange, the mean portfolio value for U.S. senior citizens who are shareholders is $183,000. Assume portfolio values are normally distributed. Suppose a simple random sample of 51 senior citizen shareholders in a certain region of the United States is found to have a mean portfolio value of $198,000, with a standard deviation of $65,000.
a. From these sample results, and using the 0.05 level of significance comment on whether the mean portfolio value for all senior citizen shareholders in this region might not be the same as the mean value reported for their counterparts across the nation, by using the critical value method. Establish the null and alternative hypotheses.
b. What is your conclusion about the null hypothesis?
Answer:
The test statistic value t = 1.64 < 2.0086 at 0.05 level of significance
Null hypothesis is accepted
The mean portfolio value for all senior citizen shareholders in this region might not be the same as the mean value reported for their counterparts across the nation
Step-by-step explanation:
Step(i):-
Given mean of the population (μ) = $183,000
Given mean of the sample (x⁻) = $198,000
Given standard deviation of the sample (S) = $65,000.
Mean of the sample size 'n' = 51
level of significance α = 0.05
Step(ii):-
Null hypothesis : H₀ : There is no significance difference between the means
Alternative Hypothesis :H₁: There is significance difference between the means
Test statistic
[tex]t = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]
[tex]t = \frac{198,000- 183,000 }{\frac{ 65,000}{\sqrt{51} } }[/tex]
t = 1.64
Step(iii)
Degrees of freedom ν = n-1 = 51-1 =50
t₀.₀₅ = 2.0086
The calculated value t = 1.64 < 2.0086 at 0.05 level of significance
Null hypothesis is accepted
Final answer:-
There is no significance difference between the means
The mean portfolio value for all senior citizen shareholders in this region might not be the same as the mean value reported for their counterparts across the nation
suppose your given the formula n=3m-2l if you know that l= m+2 how could you rewrite that formula
n=m+4
step-by-step explanation:given formula,
n=3m-2l
and,
l=m+2
here in this question We have to substitute the values of "l" in the formulae
we get,
n=3m-2(m+2)
n=3m-2m+4
n=m+4
so if we complete the process correctly we get n=m+4
Danni placed $5700 in a savings account which compounds interest continuously at a rate of 2.1%. How much will she have in the account after 4 years? Round your answer to the nearest dollar. Do NOT round until you have calculated the final answer.
Answer:
6199 is the actual answer
Step-by-step explanation:
The amount Danni will have in the account after 4 years is $6,194.09.
Given that, principal=$5700, rate of interest=2.1% and time period=4 years.
We need to find how much Danni will have in the account after 4 years.
How to find the compound interest?The formula for compound interest is [tex]A = P(1 + \frac{r}{100} )^{nt}[/tex], where P is the principal balance, r is the interest rate, n is the number of times interest is compounded per time period and t is the number of time periods.
Now, Amount [tex]=5700(1+\frac{2.1}{100} )^4[/tex]
[tex]=5700(1+0.021)^4[/tex]
[tex]=5700(1.021)^4[/tex]
=$6,194.09
Therefore, the amount Danni will have in the account after 4 years is $6,194.09.
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Given that triangle DAE ~ triangle BAC, what is the length of side AE?
Answer:
12
Step-by-step explanation:
For polygons that are similar to each other, the ratio of their corresponding sides are usually equal to each other, as they are proportional.
Therefore, given that ∆DAE is similar to ∆BAC, AD = 6, AB = 6+4 = 10, AE = x, AC = x + 8, therefore:
AD/AB = AE/AC
6/10 = x/(x+8)
Cross multiply
6*(x+8) = x*10
6x + 48 = 10x
Subtract 6x from both sides
48 = 10x - 6x
48 = 4x
Divide both sides by 4
48/4 = x
x = 12
Length of side AE = 12
You drive 5.9 kilometres to the customer.
You then drive 4 kilometres to the first aid station and finally 6.8 kilometres to the car park.
How far have you driven altogether?
For total distance add them all together.
5.9 + 4 = 9.9
9.9 + 6.8 = 16.7 km total
find X such that: 7x + 24x = 25x
Answer:
[tex]\boxed{ x = 0}[/tex]
Step-by-step explanation:
7x + 24x = 25 x
31 x = 25 x
Subtracting 25x to both sides
31x - 25x = 0
6x = 0
Dividing both sides by 6
=> x = 0
Answer:
x = 0
Step-by-step explanation:
7x + 24x = 25x
Combine like terms.
31x = 25x
Subtract 25x on both sides.
6x = 0
Divide both sides by 6.
x = 0
A group of up to 40 people are going to a trip to Washington DC. Some will travel in a van that holds 12 people, and the rest will buy train tickets. Write an inequality that can be used to find the number of train tickets that the group will need.
You are told up to 40 people are going and that the van holds 12.
40-12 = 28
So up to 28 people will need to buy train tickets.
Let n be the number of people buying train tickets and x is the total number of people going
N <= (x-12)
What is the equation of the following line written in slope-intercept form?
Answer:
[tex] y = 5x [/tex]
Step-by-step explanation:
Line equation is given as y = mx + b
Where, m is the slope of the line, which is,
[tex] m = \frac{y2 - y1}{x2 - x1} [/tex]
b is the y-intercept. It is the point at which the line crosses the y-axis for which the value of x = 0.
=>Find m and b to derive an equation for the line.
using the 2 coordinate pairs, (1, 5), (-1, -5),
Let, x2 = -1,
x1 = 1,
y2 = -5,
y1 = 5
[tex] m = \frac{y2 - y1}{x2 - x1} [/tex]
[tex] m = \frac{-5 - 5}{-1 - 1} [/tex]
[tex] m = \frac{-10}{-2} [/tex]
[tex] m = 5 [/tex]
From the graph given, the line intercepts the y-axis at point 0. Therefore b = 0.
Plug in the values of m and b in the line of equation.
y = mx + b
y = 5x + 0
y = 5x
Therefore, the equation of the line, in the graph above, written in slope-intercept form is:
[tex] y = 5x [/tex]
Please only answer if you are 100% sure about the answer.
Answer:
Choice C.
Step-by-step explanation:
Your choice is correct
2 stands for a starting point which is 2 feet from the home
As the ant moves, over time, the distance increases according to the function
Identify whether each phrase is an expression, equation, or inequality.
Answer:
Step-by-step explanation:
a+b-c+d is expression
1/3<r/9 is inequality
and the last one is an equation
an inequality contains one of the 4 symbols
in an expression there is no equal sign
- (3/4) times (- 3/8) times ___= -3/4
Answer:
x = -8/3
Step-by-step explanation:
Step 1: Write equation
-3/4(-3/8)(x) = -3/4
Step 2: Multiply
9/32(x) = -3/4
Step 3: Divide
x = -3/4/(9/32)
x = -3/4(32/9)
x = -8/3
Answer:
-8/3
Step-by-step explanation:
-(3/4) x (-3/8)= 9/32
9/32 times (-8/3) = -3/4
Answer: -8/3
Let mZA = 40°. If zB is a complement of ZA, and ZC is a supplement of ZB, find these measures.
mZB =
mZC =
Angle b= 50
Angle c= 130
Complementary angles are two angles that add to equal 90
Supplementary angles are two angles that add to equal 180
To find the measurement of angle b, subtract 40 from 90 (50)
To find the measurement of angle c, subtract 50 from 180 (130)
The measures of complementary and supplementary angles are given by m∠B = 50° and m∠C = 130°
What are Supplementary and Complementary Angles?Supplementary angles are two angles that add up to 180 degrees. In other words, if angle A and angle B are supplementary, then:
A + B = 180°
Complementary angles are two angles that add up to 90 degrees. In other words, if angle A and angle B are complementary, then:
A + B = 90°
Given data ,
If m∠A = 40°, then its complement ∠B = 90° - m∠A = 90° - 40° = 50°.
Since ∠C is a supplement of ∠B, we know that m∠C + m∠B = 180°.
Therefore, we can solve for m∠C by rearranging this equation to get:
m∠C = 180° - m∠B
Substituting the value we found for m∠B, we get:
m∠C = 180° - 50° = 130°
Hence , the angles are mZB = 50° and mZC = 130°.
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Suppose that the scores of a standardized test are normally distributed with an unknown mean and standard deviation. A random sample of 21 scores is taken and gives a sample mean of 95 points and a sample standard deviation of 8 points.
df t0.10 t0.05 t0.025 t0.01 t0.005
17 1.333 1.740 2.110 2.567 2.898
18 1.330 1.734 2.101 2.552 2.878
19 1.328 1.729 2.093 2.539 2.861
20 1.325 1.725 2.086 2.528 2.845
21 1.323 1.721 2.080 2.518 2.831
Find the margin of error for a 95% confidence interval estimate for the population mean using the Student's t-distribution
Use the portion of the table above. Round the final answer to two decimal places.
Provide your answer below:
ME = _______.
Answer:
ME = 3.64
Step-by-step explanation:
Given:
Sample size, n = 21
Sample mean, X' = 95
Standard deviation [tex] \sigma [/tex] = 8.
Confidence interval = 95%
Significance level [tex] \alpha[/tex] = 0.05
Required:
Find margin of error
To find the margin of error, use the formula below:
[tex] M.E = \frac{\sigma}{\sqrt{n}} * t_\alpha_/_2; _d_f [/tex]
Where,
[tex] t_\alpha_/_2 = 0.05/2 = 0.025[/tex]
degree of freedom, df = n - 1 = 21 - 1 = 20
Therefore,
[tex] M.E = \frac{8}{\sqrt{21}} * t_0_._0_2_5; _2_0 [/tex]
Using the table at 95% Confidence interval, we have:
[tex] = \frac{8}{\sqrt{21}} * 2.086 [/tex]
[tex] = 3.6416 [/tex]
Rounding to 2 decimal places,
ME = 3.64
What is 75miles/hr in feet/second?(1mile = 5280feet)
Answer:
110 feet/sec
Step-by-step explanation:
75 miles x 5280 feet
= 396000
396000/60 min
=6600
6600/60 secs
=110 feet/second
4, Homework 1, Jenny's mom says she has an hour before bedtime.Jenny spends 3/5 of The hour texting a friend and 3/8 of The remaining Time brushing her Teeth and on her pajamas. She spends the rest of the Time reading her book. How long did Jenny read?
Answer: 15 minutes is spent on reading
Step-by-step explanation:
1 hour = 60 minutes
Jeny spends 3/5th texting
= 3/5 x 60 = 36 minutes
Remaining = 60 - 36 = 24 minutes
3/8 on brushing and pyjamas
= 3/8 x 24 = 9 minutes
Remaining time is 60-36-9 = 15
Answer:
15 minutes
Step-by-step explanation:
3/5 texting
1 hour * 3/5 =
60 minutes * 3/5 =36 minutes
60 -36 = 24 minutes left
3/8 of that time brushing teeth
24 * 3/8 = 9 minutes
24 - 9 = 15
That leaves 15 minutes for reading
A supermarket charges 3.24 for a carton of milk. They mark up the milk by 35% in order to make a profit. What is the original cost of the milk
Answer:
$ 2,4
Step-by-step explanation:
135% .............$ 3,24
100% .............$ x
x = 3,24×100/135
= 324/135
= $ 2,4
You are reading the draft of a scientific paper that your co-worker has written. In the paper, he draws a sample from a population and computes the following two confidence intervals for : A 95% confidence interval of (90.21,100.37) A 99% confidence interval of (93.61.98.53) How do you know your co-worker made a mistake? He computed more than one confidence interval using the same sample data. Your co-worker did not round to 3 decimal places in his confidence interval upper and lower bounds The 99% confidence interval should be wider than the 95% confidence interval He is not a statistic, so it doesn't make any sense to compute confidence intervals for it. There is nothing wrong with his statements.
Answer:
The correct option is (C).
Step-by-step explanation:
The general form of a confidence interval is:
[tex]CI=SS\pm CV\cdot SE[/tex]
Here,
SS = Sample statistic
CV = critical value
SE = standard error
The width of the confidence interval is:
[tex]\text{Width}=2\cdot CV\cdot SE[/tex]
The width of the confidence interval is dependent upon the critical value and hence dependent upon the confidence level.
As the confidence level increases the critical value increases hence in turn increasing the width of the interval.
And as the confidence level decreases the critical value decreases hence in turn decreasing the width of the interval.
In this case the 95% confidence interval is, (90.21,100.37).
And the 99% confidence interval is, (93.61.98.53).
It is clear by looking at the two intervals that the 95% confidence interval is wider than the 99%. Thus, this clearly indicates that the co-worker made a mistake.
The correct option is (C).
A tourist can bicycle 28 miles in the same time as he can walk 8 miles. If he can ride 10 mph faster than he can walk, how much time (in hr) should he allow to walk a 25-mile trail? (Hint: How fast can he walk?) ________ hr. (enter a fraction)
Answer:
The answer is [tex]\frac{25}{4}[/tex]
Step-by-step explanation:
Velocity formula:
[tex]v = \frac{d}{t}[/tex]
In which v is the velocity, d is the distance, and t is the time.
A tourist can bicycle 28 miles in the same time as he can walk 8 miles. He can ride 10 mph faster than he can walk:
This means that:
[tex]v = \frac{8}{t}[/tex]
And
[tex]v + 10 = \frac{28}{t}[/tex]
[tex](v + 10)t = 28[/tex]
From the first equation:
[tex]vt = 8[/tex]
So
[tex]vt + 10 = 28[/tex]
[tex]8 + 10t = 28[/tex]
[tex]10t = 20[/tex]
[tex]t = \frac{20}{10}[/tex]
[tex]t = 2[/tex]
He walks 8 miles in two hours, so:
[tex]v = \frac{8}{2} = 4[/tex]
4 miles per hour.
How much time (in hr) should he allow to walk a 25-mile trail?
This is t when [tex]d = 25[/tex]. So
[tex]v = \frac{d}{t}[/tex]
[tex]4 = \frac{25}{t}[/tex]
[tex]4t = 25[/tex]
[tex]t = \frac{25}{4}[/tex]
The answer is [tex]\frac{25}{4}[/tex]
piece-wise functions
Answer:
see the attachment for a graphdomain: all real numbersrange: -6 and y>-5Step-by-step explanation:
The graph below was created by a graphing utility.
It shows no horizontal gaps: f(x) is defined for all values of x, so the domain is all real numbers.
It shows a vertical gap between y=-6 and y>-5. So, the range is in two parts:
{-6} ∪ {y > -5}
a) There are 390 people in Terminal 2 of an airport. The table below shows how many people
are travelling to each destination.
Destination Number of travellers
Naples 130
Barcelona 98
Paris 78
Liverpool 84
For a sample of 30 participants, describe how a sample could be obtained using a stratified
sampling process
Answer:
To obtain a stratified sample of 30 participants, we divide the people according to their destination, ending up with four groups(Naples, Liverpool, Barcelona, Paris). Finally, we choose some members each of those groups. Adding the members choosing from all groups, we have 30 members.
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
A stratified sample divided all the people into groups, and then surveyes some elements(some people) of each group.
Population: 390 people in the terminal.
Groups: 4 groups. Those traveling to Naples, those traveling to Barcelona, those traveling to Paris and those traveling to Liverpool.
Stratified sample of 30:
To obtain a stratified sample of 30 participants, we divide the people according to their destination, ending up with four groups(Naples, Liverpool, Barcelona, Paris). Finally, we choose some members each of those groups. Adding the members choosing from all groups, we have 30 members.
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $43,000 and $61,600. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired.
Required:
a. What is the planning value for the population standard deviation (to the nearest whole number)?
b. How large a sample should be taken if the desired margin of error is as shown below (to the nearest whole number)?
1. $500?
2. $200?
3. $100?
Answer:
a. 4650
b.
1. 332
2. 2076
3. 8306
Step-by-step explanation:
a. The planning value for population standard deviation is,
s = (maximum - minimum) / 4
s = (61600 - 43000) / 4
s = 4650
that is, it would be 4650, the planning value for population standard deviation
b. we have to:
n = (z * s / E) ^ 2
z for confidence level 95% is 1.96, E = 500; 200; 100
replacing:
1.
n = (1.96 * 4650/500) ^ 2
n = 332.2 = 332
2.
n = (1.96 * 4650/200) ^ 2
n = 2076.6 = 2076
3.
n = (1.96 * 4650/100) ^ 2
n = 8306.4 = 8306
How many combinations of players can a coach have if he needs to pick 2 out of a total of 4?
Answer:
the coach will have a combination of 2 players since there are initially 4 players on ground and he's picking two from them.
Select the correct answer. Vector u has its initial point at (-7, 2) and its terminal point at (11, -5). Vector v has a direction opposite that of vector u, and its magnitude is three times the magnitude of u. What is the component form of vector v? A. v = B. v = C. v = D. v =
Answer:
Step-by-step explanation:
vector u=<(11-(-7),(-5-2)>=<18,-7>
as direction is opposite to u
so vector v=-3(18,-7)=(-54,21)
Find the inequality represented by the graph.
Answer:
[tex]x \geqslant \frac{y + 4}{3} [/tex]Explanation;
Associated line with this equation is:
y=mx+c
when,
X=0
y=-4
so, c=-4
X=1
y=-1
[tex] - 1 = m- 4 \\ - m = - 4 + 1 \\ - m = - 3 \\ m =3 \\ [/tex]
[tex]y = 3x - 4 \\ or \: y + 4 = 3x \\ or \: \frac{y + 4}{3} = x[/tex]
Inequality representated by graph:
[tex]x \geqslant \frac{y + 4}{3} [/tex]
Hope this helps...
Good luck on your assignment...
Use the place value chart to write 9.807.
Answer:
9 ones, 8 tenths, 0 hundredths, 7 thousandths
Step-by-step explanation:
Answer:
9 thousands
8 hundreds
0 tens
7 ones
Step-by-step explanation:
Hope it helped!
Please answer this correctly
Answer:
80%
Step-by-step explanation:
So 2 is 2 and 1 3 and 5 are odd so it is 4/5 and as a percent it is 80%
Answer:
80%
Step-by-step explanation:
The numbers 2 or odd are 1, 2, 3, and 5.
4 numbers out of 5.
4/5 = 0.8
P(2 or odd) = 80%
Suppose that you spin the double wheel pictured to the right. Assuming that the wheels are independent and each outcome is equally likely, determine the probability that you get red on both wheels.
A spinner consists of two concentric unequal circular wheels with the smaller one placed on the larger. The smaller wheel is divided into 8 equal sectors. The number of sectors for each color is as follows, where the label is listed first and the number of sectors is listed second: red, 3; blue, 2; yellow, 1; grey, 2. The larger wheel is divided into 12 equal sectors. The number of sectors for each color is as follows, where the label is listed first and the number of sectors is listed second: red, 4; blue, 2; yellow, 2; grey, 2; green, 2.
B=blue
G=green
Y=yellow
R=red
g=grey
The probability is:_________
Answer:
0.125
Step-by-step explanation:
Smaller Wheel
Total Number of Equal Sectors = 8
The number of Red sectors =3
The probability of obtaining red on the smaller wheel [tex]=\dfrac38[/tex]
Larger Wheel
Total Number of Equal Sectors = 12
The number of Red sectors =4
The probability of obtaining red on the larger wheel [tex]=\dfrac{4}{12}[/tex]
Assuming that the wheels are independent and each outcome is equally likely, the probability that we get red on both wheels
[tex]=\dfrac38 \times \dfrac{4}{12}\\\\=\dfrac18\\\\=0.125[/tex]
The probability is: 0.125
Decide whether the Experiment is a Binomial Experiment. If it is not, explain why:
You observe the gender of the next 850 babies born at a local hospital. The random variable represents the number of boys.
You draw a marble 350 times from a bag with three colors of marbles. The random variable represents the color of marble that is drawn.
Testing a cough suppressant using 820 people to determine if it is effective. The random variable represents the number of people who find the cough suppressant to be effective.
Answer:
Experiment 1 and 3 are clear binomial experiments.
Experiment 2 needs tweaking to be a binomial experiment.
Check Explanation.
Step-by-step explanation:
A binomial experiment is one in which
1) The probability of success doesn't change with every run or number of trials.
2) It usually consists of a fixed number of runs/trials with only two possible outcomes, a success or a failure.
3) The outcome of each trial/run of a binomial experiment is independent of one another.
Checking each of the experiments one at a time
- You observe the gender of the next 850 babies born at a local hospital. The random variable represents the number of boys.
For this experiment,
1) The probability of success doesn't change with every run or number of trials as it is a 50% chance that each child examined is a boy.
2) It consists of a fixed number of runs (850) with only two possible outcomes, success (if it's a boy) and failure (if it's a girl).
3) The probability of each trial being a boy is independent from all the other trials.
Hence, this experiment is a binomial experiment.
- You draw a marble 350 times from a bag with three colors of marbles. The random variable represents the color of marble that is drawn.
For this experiment,
1) If the marbles aren't being replaced after each draw, the probability of success, that is, picking a particular marble colour changes from trial to trial.
2) Although, it consist of a fixed number of runs/trials, there are more than two possible outcomes with 3 types of colours. Unless the experiment focuses on one colour and treats the other two colours as 'others', this condition too isn't satisfied.
3) Without replacement, the probability of success (picking a particular marble colour) in one trial isn't independent of the other trials.
This is not a binomial experiment as it doesn't satisfy all the required conditions to be one.
- Testing a cough suppressant using 820 people to determine if it is effective. The random variable represents the number of people who find the cough suppressant to be effective.
1) The probability of success doesn't change with every run or number of trials as it is the same chance that each person finds the cough suppressant to be effective.
2) It consists of a fixed number of runs (820) with only two possible outcomes, success (cough suppressant is effective) and failure (cough suppressant isn't effective).
3) The probability of each trial being a person that finds the cough suppressant to be effective, is independent from all the other trials.
Hence, this experiment is a binomial experiment.
Hope this Helps!!!