Step-by-step explanation:
so, hypothetically,
3 in = 4 ft
4 in = 4 × 1 in = 4 × 3 in / 3 = 4 × 4 / 3 = 16/3 =
= 5.333333333... ft or 5 1/3 ft
Simplify these expressions.
a. 6ab + (–3x) + 2ab
b. 12x + 4y + (–3x)
c. 6w + (–2y) + 3w
d. 4abc + (–9abc) + 10d
Answer:
a. 6ab +( - 3x) + 2ab
=6ab - 3x +2ab
=6ab + 2ab - 3x
=8ab - 3x
Step-by-step explanation:
Eliminated the brackets first
Collected like terms
Then I solved
Here are the travel times in minutes of 19 randomly chosen New York workers:
5
10
15
15
15
15
20
20
20
20
30
30
40
40
45
60
60
65
85
1. Find the mean of the New York travel times.
32 because you add all the number the divide by the total amount witch is 19
A box of apples has a mass of 6.2 kilograms. How many grams is equivalent to 6.2 kilograms?
a) Find the value of 2x + y when x = 4 and y = 3
Answer:
11
Step-by-step explanation:
x = 4
2x
= 2 * 4
= 8
y = 3
2x + y
= 8 + 3
= 11
A five-question multiple-choice quiz has five choices for each answer. Use the random number table provided, with 0’s representing incorrect answers and 1’s representing correct answers, to answer the following question:
What is the probability of correctly guessing at random exactly one correct answer? Round your answer to the nearest whole number.
Answer:
¿Cuál es la probabilidad de aprobar un examen al azar?
Resultado de imagen para ¿Cuál es la probabilidad de adivinar correctamente al azar exactamente una respuesta correcta?
La probabilidad de acertar respondiendo al azar una pregunta es de una entre cuatro: 1/4 = 0.25. Normalmente decimos un 25% de probabilidad de acertar. La probabilidad de fallar sería tres entre cuatro: 3/4 = 0.75. O sea un 75%.
Step-by-step explanation:
this is the best ✔️ 5+(2-3)49_.56837659=0-9
Step-by-step explanation:
0 upto 9
pls answer what you can and I will give brainliest.
1. A population variance is used to calculate the t statistic for a hypothesis test.
(True/False)
2. Holding everything else constant, increasing the sample size (n) decreases estimated standard error (SM) and increases the likelihood of a significant result.
(True/False)
3. With = .01, a two-tailed t test for a sample of n = 20 subjects would have critical t boundary values of t = ±2.861
(True/False)
4. A sample of n = 15 scores would produce a t statistic of df = 16.
(True/False)
5. Using the single sample t statistic formula (M - divided by SM) for a hypothesis test: First, calculate the obtained t statistic for: M = 12, = 6, with SM = 2.
Second, find the critical t boundary values for the critical region in the t Distribution Table (p. 537).
Now, describe the decision regarding the null hypothesis for a two-tailed test with =.05 and df=8: _________.
(Reject Null Hypothesis/Fail to reject Null Hypothesis)
6. An independent-measures t test design could be used to evaluate the difference in verbal skills between 3-year old girls and 3-year old boys.
(True/False)
7. The null hypothesis for the independent-measures t test states that there is no difference between the two population means.
(True/False)
8. The homogeneity of variance assumption requires that the two samples have equal variances.
(True/False)
9. One sample has n = 6 and SS = 20, and a second sample has n = 6 and SS = 30. The pooled variance for the two samples is 50/10 = 5.
(True/False)
10. An independent-measures study uses a separate sample to represent each of the treatment conditions or populations being compared.
(True/False)
11. The goal of an independent measures research study is to evaluate mean differences between two populations (or treatment conditions).
(True/False)
12. For the difference scores: 3, -8, 6, -4, -2, the value of MD = -1.
(True/False)
13. A researcher obtains a t statistic of t = 2.00 from a repeated-measures study using n = 17 participants. If effect size is measured using r2, then r2 = 4/20 = 0.20
(True/False)
14. The repeated-measures t test design is suited to situations in which there are relatively few subjects available for study
(True/False)
15. The repeated-measures t test design is helpful because it uses fewer subjects for two samples.
(True/False)
16. The researcher’s goal for a repeated-measures t test is to use a sample of difference scores to answer questions about the general population, and particularly to find out if there is any difference between the two treatment conditions for the general population.
(True/False)
17. Independent observations are an assumption for the repeated-measures t test design.
(True/False)
18.
Two assumptions of the t test are: ________.
Assumption 1: ________
Assumption 2: ________
THANKS <3
Answer:
I believe the top one is true! I'm sorry I couldn't answer them all :c
Step-by-step explanation:
PLEASE HELP ME ON THIS QUSTION
The data shows the age of thirteen different dogs at a dog park.
3, 3, 7, 2, 11, 4, 8, 14, 10, 8, 13, 5, 4
Create a histogram of this data.
To create a histogram, hover over each age range on the x-axis. Then click and drag up to plot the data.
Answer:
Given the following data shows the age of thirteen different dogs at a dog park:
3, 3, 7, 2, 11, 4, 8, 14, 10, 8, 13, 5, 4
The frequency table is as shown below;
Age | number of dogs
0 - 2 | 1
3 - 5 | 5
6 - 8 | 3
9 - 11 | 2
12 - 14 | 2
Step-by-step explanation:
To create a histogram of the given data, you would have to plot the ages of the dogs against the number of dogs.
Calculations and Parameters:Given the set of data: 3, 3, 7, 2, 11, 4, 8, 14, 10, 8, 13, 5, 4
You would have to create a frequency table and this would contain the ages and number of the dogs as displayed below:
Age | number of dogs
0 - 2 | 1
3 - 5 | 5
6 - 8 | 3
9 - 11 | 2
12 - 14 | 2
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Can someone help please
Answer:
24sq.ft
Step-by-step explanation:
Area of a parallelogram = Base*HeightHere,
→Base = 6ft, Height = 4ft
→ 6*4ft
→24sq.ft
While writing area of a figure, we have to express the area in sq which means square ThankYouPlease mark me as brainliest
If a lost male child is found who is 145 cm tall, determine an interval of likely ages for the child.
Answer:
wrote in said they would not have children if they could make the choice again. is 166 cm tall really has a wrist circumference of 65 mm
Step-by-step explanation:
hope this helps!
8-10yrs
hope it helps...!!!
Joseph works 5 hours on Monday, 10 hours on Tuesday, 9.5 hours on Wednesday, 8.25 hours on
Thursday, 6 hours on Friday, and 7.5 hours on Saturday. He is paid $9.85 per hour and time and a
half for all hours over 40 per week. Find his gross earnings per week.
I
I
Answer:
459.9 or 460
Step-by-step explanation: add it all up and multiply and then add once more the half times the 6.25 hours of overtime
Can someone explain why this equation equals 2?
Answer:
bc it dose
Step-by-step explanation:
I need help with this question please
Answer:
I) 23
K) 96
J) 77
Step-by-step explanation:
All angles of a triangle equal up to 180
6x+4x-3+x+7=180
11x+4=180
11x=176
x=16
A case of 12 jars of salsa weighs 180 ounces. How many ounces will 5 jars of salsa weigh?
Answer:
75 ounces
Step-by-step explanation:
Divide 180 by 12 to see how much a single jar weighs
180/12 = 15
Multiply the weight of one jar by how many jars you need
15x5 = 75
Answer: 75 ounces
Step-by-step explanation:
The 12 jars combined weigh 180 ounces in total. We find the weight per jar by dividing 180 ounces by 12 which gives is 15 ounces per jar. We find the weight of 5 jars by multiplying 5 jars by 15 ounces. Here are the calculations as follows.
180÷12=1515x5=75I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
Answer:
x = 14
y = 30
Step-by-step explanation:
x + 10 = 3x - 18
x = 3x - 18 - 10
x = 3x -28
x - 3x = -28
-2x = -28
x = 14
(3x - 18) + (6y - x - 10) = 180
3x - x -18 - 10 + 6y = 180
2x - 28 + 6y = 180
2x + 6y = 180 + 28
2(14) + 6y = 208
6y = 208 - 28
6y = 180
y = 30
I hope this helps!
A farmer who only sells produce to local residents in his town wishes to expand to a neighboring city. The farmer calls everyone in the phone book with a last name starting with "S" in the neighboring city and asks them if they would be interested in buying the produce. 242 told the farmer that they would be interested, 576 said they would not be interested and 138 refused to answer. Which statement is true?
The survey sample is residents of the neighboring city with a last name starting with ”S” and whose phone number is listed in the phone book.
The population of the survey is the 242 that said they would be interested.
The population of the survey is all residents of the neighboring city whose phone number is listed.
The survey sample includes current customers.
Answer:
The survey sample is residents of the neighboring city with a last name starting with ”S” and whose phone number is listed in the phone book.
Step-by-step explanation:
that one makes the most sense
A group of friends are canoeing along a river. They want to travel upstream 1.5 km, then travel back downstream back to their original starting point. The river has a current of 6km / h * r If the distance equation to find the time to travel upstream is time = and the equation to (velocitycurrenty distance travel downstream is time = ( velocity current) How fast should the canoe be traveling to complete the journey in 6 hours ? b. If the journey upstream ends up taking twice as long as the journey downstream, how fast did the canoe travel ?
Using the relation between velocity, distance and time, it is found that:
a) The canoe should be traveling at a rate of 37.5 km/h.b) The canoe traveled at a rate of 6.124 km/h.What is the relation between velocity, distance and time?Velocity is distance divided by time, hence:
[tex]v = \frac{d}{t}[/tex]
Item a:
1.5 km in 6 hours, with a velocity of vc - 6, in which vc is the velocity of the canoe and 6 km/h is the velocity of the current, so:
[tex]vc - 6 = \frac{1.5}{6}[/tex]
vc - 36 = 1.5
vc = 37.5.
The canoe should be traveling at a rate of 37.5 km/h.
Item b:
Upstream, the velocity is given by vc - 6, as it is against the stream, hence:
[tex]vc - 6 = \frac{1.5}{2t}[/tex]
[tex]t(vc - 6) = \frac{1.5}{2}[/tex]
[tex]t = \frac{1.5}{2vc - 12}[/tex]
Downstream, we have that:
[tex]vc + 6 = \frac{1.5}{2(\frac{1.5}{2vc - 12})}[/tex]
[tex]vc + 6 = \frac{1.5}{vc - 6}[/tex]
[tex]vc^2 - 36 = 1.5[/tex]
[tex]vc = \sqrt{37.5}[/tex]
vc = 6.124.
The canoe traveled at a rate of 6.124 km/h.
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Answer:
dfgd
Step-by-step explanation:
sdfg
4) Look at this set of 5 numbers: 5 3 5 3 4
By how much would the mean increase if the number 8 replaced one of the 3's in the
set?
==========================================================
Explanation:
To compute the mean, we first add up the numbers
5+3+5+3+4 = 20
Then divide by 5 since there are 5 numbers in the set
20/5 = 4
The mean is 4.
---------------
Now replace one of the '3's with 8 and recompute the mean
5+8+5+3+4 = 25
25/5 = 5
The mean is now 5.
The old mean in the previous section was 4.
The mean has increased by 1 since 5-4 = 1.
Side note: The increase from 3 to 8 is +5, which when dividing by 5, we're basically incrementing the mean by +1.
Answer:
1
Step-by-step explanation:
Mean=Sum of terms/ No.of terms
→5+3+5+3+4/5
20/5=4
If we replace 3 as 8 in one of the place values, Then:5+3+5+8+4/5=25/5
→5
Increment= 5-4=1
THUS, 1 is increased.
THANKYOU
PLEASE MARK ME AS THE BRAINLIEST PLEASE BYE FOR NOW.
What is the circumference of a circle with a radius of eight inches
Answer:
50.24 inches[tex] \: [/tex]
Step-by-step explanation:
It is given that, the radius of a circle is 8 inches and we are to find the circumference of the circle.
[tex] \: [/tex]
To find the circumference of the circle we must know this formula first :
[tex]\\{ \longrightarrow \qquad{ \underline {\boxed{ \pmb{ \mathfrak{ \: Circumference_{(circle)}= 2 \pi r}}}}}} \: \: \bigstar \\ \\[/tex]
Where
r is the radius of the circle.We'll take the value of π as 3.14Now substituting the values in the formula :
[tex]\\{ \longrightarrow \qquad{ {{\sf{{ \: Circumference_{(circle)}= 2 \times 3.14 \times 8}}}}}} \: \: \\ \\[/tex]
[tex]{ \longrightarrow \qquad{ {{\sf{{ \: Circumference_{(circle)}= 3.14 \times 16}}}}}} \: \: \\ \\[/tex]
[tex]{ \longrightarrow \qquad{ { \pmb{\frak{{ \: Circumference_{(circle)}= 50.24}}}}}} \: \: \\ \\[/tex]
Therefore,
The circumference of the circle is 50.24 inchesAnswer:
C = 50.24 in
Step-by-step explanation:
Given that,
→ Radius (r) = 8 in
Formula we use,
→ 2πr
The circumference of the circle will be,
→ 2πr
→ 2 × 3.14 × 8
→ 6.28 × 8
→ [ 50.24 in ]
Hence, the circumference is 50.24 in.
PLEASE HELP WILL MARK BRAINLIEST THANK YOU
Answer:
3x+y=-2
Step-by-step explanation:
A parallel line has the same slope as y=-3x-6, so a slope of -e
This means that the coefficient of x has to be bigger than y, and since both x and y are on the left hand side, they both have to be positive.
The number of chips of different colors in Kathy's bag is shown below:
9 blue chips
5 pink chips
6 white chips
Kathy takes out a chip from the bag randomly without looking. She replaces the chip and then takes out another chip from the bag.
Part A--What is the probability that Kathy takes out a white chip in both draws? Show your work in the box for full credit. Show the probability as a ratio and round your answer to the nearest whole percent.
Part B--Is this scenario an independent event or dependent event? Explain.
Part C--What is the probability that Kathy takes out a blue chip in the first draw, and then a pink chip in the second draw? Show your work in the box for full credit. Show the probability as a ratio and round your answer to the nearest whole percent.
Part D--Is this scenario an independent event or dependent event? Explain
16. Jason leaves Detroit at 2: 00 PM and drives at a constant speed west along I-94. He passes Ann Arbor, 40 mi from Detroit, at [tex]2\colon50\mathrm{PM}\text{.}[/tex]
(b) Draw the graph of the equation in part (a).
Answer:
at 2: 00 PM constant speed may 4:00 constant speed
Step-by-step explanation:
makatulong po ba
which expressions are equivalent to 5 times 5 times 5 times 5 times 5 times 5? Select all the expressions that apply.
Answer:
5 to the power of 5. In other words, 3125
Answer:
5*5*5*5*5*5
[tex]5^6[/tex]
Step-by-step explanation:
If your answer choices show exponents, then any base 5 exponents multiplied that have exponents adding up to 6 will work too.
1. Dr. Orchid has 9 paintings she wants to hang side by side on her wall.
(a) In how many ways can she arrange all 9 paintings? Show your work.
(b) If she only wants to display 4 of the paintings, in how many ways can she choose the paintings she
wishes to display? Show your work.
Answer:
The number of ways to arrange the 9 paintings is 362880, and there are 126 ways to display only 4 out of the 9 paintings
Part A: The number of arrangements.The number of paintings is given as:
n = 9
The number of arrangement is then calculated using:
n! = 9!
Evaluate the factorial
n! = 362880
Part B: The number of selectionTo select 4 paintings from a total of 9, we make use of the following combination formula
Ways = 9C4
Evaluate the above expression using a calculator
Ways = 126
Hence, there are 126 ways to display only 4 out of the 9 paintings
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What is the Vertex and Y-intercept of f(x)=3x^2-6x+4? Please show your work.
Answer:
(1;1) and (0;4)
Step-by-step explanation:
1) if given f(x)=3x²-6x+4 (where a=3; b=-6 and c=4), then
[tex]x_0=\frac{-b}{2a}; \ = > \ x_0=1;[/tex]
[tex]y_0=3*1-6*1+4=1;[/tex]
it means, the vertex has coordinates (1;1).
2) if according to the condition x=0, then
f(0)=0-0+4=4;
it means the Y-intercept is 4.
A computer fan's speed rises as the computer heats up. Based on the table, what is MOST LIKELY the fan's speed at 7 minutes?
A) 0 RPM
B) 1,400 RPM
C) 2,100 RPM
D) 2,800 RPM
Answer:
2,800
Step-by-step explanation:
Because they are adding 700 each time.
solve the inequality: |6w+2|-6>8
Answer:
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASEStep-by-step explanation:
The solution is given
[tex] |6x + 2| - 6 > 8[/tex]
[tex] |6x + 2| > 8 + 6[/tex]
[tex] |6x + 2| > 14[/tex]
Now wit will be swprated into two parts
First part
[tex]6x + 2 > 14 [/tex]
[tex]6x > 14 - 2[/tex]
[tex]x > 12 \div 6[/tex]
[tex]x > 8[/tex]
The second part is
[tex]6x + 2 > - 14[/tex]
[tex]6x > - 14 - 2[/tex]
[tex]x > - 16 \div 6[/tex]
This question has two answers
6-16/6Which is an equivalent form of the expression 1800(1.2)-¹?
1800
(2)
0 1800(3)
1800
မြို့)'
1800 (7)
Answer:
Option B will be the correct option.
Step-by-step explanation:
The given expression is
We can rewrite the term as
[As we know ]
Now we will simplify the expression
=
=
Therefore, Option B will be the correct option.
There are 350 eighth graders at Wilson Middle School. In the class president election, 252 students voted for Luke, 56 students voted for Alice, and 42 students voted for Chris. What percent of eighth graders voted for Luke?
72%
hope it helps...!!!
Answer:
72%
Step-by-step explanation:
Step 1.
Do 252 divided by 350
252/350
Step 2.
Convert answer into percentage
252/350=.72
.72=72%
In a cash drawer there is $208.00 in $1 bills and $5 bills. The number of $5 bills is three times as the
number of $1 bills. How many of each are in the drawer?
Answer:
there are $624.00 $5 in the money drawer
Please help me fast!
Find the Inverse
To find the inverse, interchange the variables and solve for
y
.
f
−
1
(
x
)
=
x
9
+
2
9