Answer:
The correct answer is 0.004
Step-by-step explanation:
I got it correct
which is the right answer?????
Answer:
x = 21
Step-by-step explanation:
add the two equations together which would would equal 180 because they are mirrored
3x + 12 +5x =180
8x + 12 = 180
8x = 168
x = 21
A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 213 students who completed all the quizzes and wrote the final exam. The standard deviation of the total quiz marks was 15, and that of the final exam was 17. The correlation between the total quiz mark and the final exam was 0.61. Based on the least squares regression line fitted to the data of the 213 students, if a student scored 17 points above the mean of total quiz marks, then how many points above the mean on the final would you predict her final exam grade to be?
Answer:
Her final exam grade would be 11.7521 above the mean
Step-by-step explanation:
We have:
The number of students = 213
Standard deviation of total quiz = 15
Standard deviation of final exam = 17
Correlation = 0.61
0.61x17/15
= 0.6913
If the student scored 17 points above the mean of total quiz marks
17 x 0.6913
= 11.7521
Her final exam grade would be 11.7521 above the mean
) How do college professors spend their time? The National Education Association Almanac of Higher Education gives the following average distribution of professional time allocation: teaching, 51%; research, 16%; professional growth, 5%; community service, 11%; service to the college, 11%; and consulting outside the college, 6%. Make a pie chart showing the allocation of professional time for college professors.
Answer:
See Attachment
Step-by-step explanation:
Given
[tex]Teaching = 51\%[/tex]
[tex]Research = 16\%[/tex]
[tex]Professional\ Growth =5\%[/tex]
[tex]Community\ Service = 11\%[/tex]
[tex]College\ Service = 11\%[/tex]
[tex]Consulting = 6\%[/tex]
Required
Represent using pie chart
I'll answer using Microsoft Office Excel
First, you need to create a table then you generate a chart from the table
See Attachment
which of the values of x below are solutions to the inequality -8× + 3 > - 5
Answer:
0 and -1
Step-by-step explanation:
An advertising company designs a campaign to introduce a new product to a metropolitan area of population 5 Million people. Let P(t) denote the number of people (in millions) who become aware of the product by time t. Suppose that P increases at a rate proportional to the number of people still unaware of the product. The company determines that no one was aware of the product at the beginning of the campaign, and that 50% of the people were aware of the product after 20 days of advertising. The number of people who become aware of the product at time t is:
Answer:
The number of people who became aware at the time T = 20 days = 2.5 million
Step-by-step explanation:
p(t) = 5 million
To = 0
T1 = 20 days
P(T1 ) = 50% * 5 = 2.5 million
hence to confirm the value of t where t = 20
P(T1) = [tex]6 - 4 (\frac{4}{5} )^{\frac{1}{50}t }[/tex]
= [tex]6 - 4 (\frac{4}{5} )^{0.4}[/tex]
= 6 - 4(0.9146)
p(20 ) ≈ 2.5 million
evaluate 2 to the -5 power
Which graph is the solution to the inequality –3x − 6 > 9?
Answer:
See attachment
Step-by-step explanation:
First solve this like a normal equation:
-3x - 6 > 9
Add 6 to both sides:
-3x > 9 + 6
-3x > 15
Divide by -3 and remember to switch the inequality sign:
x < 15/(-3)
x < -5
Think about the graph of x = -5. It's a vertical line crossing the y-axis at x = -5. Now, we have x is less than -5. That means all the values less than -5 should be viable solutions. So, shade the part of the graph to the left of the vertical line.
Also, since we have x < -5 and not x ≤ -5, the line should be dotted.
See graph attached.
~ an aesthetics lover
Maryi had $64.25, but gave Jim $48.86. How much does Mary have now?
Answer:
$15.39
Step-by-step explanation:
You just subract
$64.25 - $48.86
Answer:
15.39
Step-by-step explanation:
$64.25
- 48.86
-------------
$15.39
the sum of two numbers is 90. their difference is 28. what are the numbers?
Hey there! ☺
[tex]Answer:\boxed{59\text{ and }31}[/tex]
[tex]Explanation:[/tex]
The first number can be written as x. The two numbers have a difference of 28, so the other number can be written as x-28. The total sum of the two numbers is 90. This can be written as an equation:
[tex]x+x-28=90[/tex]
Add 28 to both sides to leave the variable by itself:
[tex]x+x-28+28=90+28\\x+x=118[/tex]
Add the two x's:
[tex]x+x=118\\2x=118[/tex]
Divide both sides by 2:
[tex]\frac{2x}{2} =\frac{118}{2} \\x=59[/tex]
The first number is 59. The other number can be found by subtracting 28 from 59, since the difference between the two numbers is 28.
[tex]59-28=31[/tex]
To make sure the answer is correct, you can try adding the two numbers to check if they equal 90.
[tex]59+31=90\ \checkmark[/tex]
The answer is 59 and 31.
Hope this helps! ☺
[tex]\text{-TestedHyperr}[/tex]
What is the range of the function on the graph
Answer:
all real number greater than or equal to 2
Step-by-step explanation:
The range is the y value so that is 2 and the y values are increasing because the graph is increasing. It is greater than or equal to 2 because it has a closed dot which stands for greater than or equal to.
Answer:
The Answer Is D
Step-by-step explanation:Just Did the quiz.
In △ABC, m∠CAB = 60°, AD is the angle bisector of ∠BAC with D ∈ BC
and AD = 8ft. Find the distances from point D to the sides of the triangle.
pls don't use trigonometry
Answer:The distances from D to the both sides(AB and AC) of the triangle are 4 ft.
explanation:
In the diagram below, ABC is a triangle in which ∠CAB = 60°
As, AD is the angle bisector of ∠CAB, that means ∠CAD = ∠DAB = 30°
The distance from D to side AC is DE and distance from D to side AB is DF. That means both ∠AED and ∠AFD are right angle.
Given that, the length of AD = 8 ft.
So, in right angle triangle AED.....
Also, in right angle triangle AFD....
So, the distances from D to the both sides(AB and AC) of the triangle are 4 ft.
The distance from point D to the sides of the triangle is 4 feet.
What is an angle bisector?An angle bisector is defined as a line that divides an angle into two equal angles.
Draw the given angle first, then cut it in half, and then draw the angle's bisector.
Given that
In △ABC, m∠CAB = 60°,
AD is the angle bisector of ∠BAC with D ∈ BC
and AD = 8ft.
Angle CAB is 60 degrees, and AD bisects it, so angles CAD and BAD are each 30 degrees.
Let E be the point on AB for which DE is perpendicular to AB.
Then triangle ADE is a 30-60-90 right triangle with hypotenuse 8;
⇒ sin30° = DE/AD
⇒ 1/2 = DE/8
⇒ DE = 4
So the short-leg DE has a length of 4.
But since DE is perpendicular to AB, that is the distance of D from side AB.
So the distance of point D from sides AB and AC is 4.
Thus, the distance from point D to the sides of the triangle is 4 feet.
Learn more about the Angle bisector here:
brainly.com/question/2478436
#SPJ2
The perimeter of a square is 40 inches. The length of each side of the square is 4x-2 inches what is the value of x?
PLZ HELP. DUE NOW!!!!!
Since every centipede that Ricky has seen has 30 legs, he concludes that all centipedes have 30 legs. Is Ricky correct? Explain.
a) Ricky is correct because inductive reasoning yields certain truths.
b) Ricky is not necessarily correct, as his premise does not support his conclusion.
c) Ricky is not necessarily correct, as inductive reasoning does not yield certain truths.
d) Ricky is correct because his conclusion is supported by the premise.
Answer:
a because centi means 100 so he was wrong from the start and ...how the heck did he count em
Step-by-step explanation:
Answer: Ricky is correct because his conclusion is supported by the premise.
Step-by-step explanation: "a previous statement or proposition from which another is inferred or follows as a conclusion." = PREMISE
HIS PREMISE LED TO AN INFERRED CONLUSION
A store that sells gift baskets is having a promotional sale customers Can make their own fruit baskets to use as gifts customers pay $3.00 for a basket and add $0.20 per pound for all types of fruits the cost for a basket containing p pound of fruit is $4.30 which equation could be used to find p the number of pounds of fruit in this basket
A. 3.00+0.20p=4.30
B. 3.00(4.30+p)=3.00
C. 0.20+3.00p= 4.30
D. (0.20+4:30)p=3.00
Answer:
$3.00+$0.20=3.2×4.30=13.76
In the past, 49% of those taking a public accounting qualifying exam have passed the exam on their first try. Lately, with the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual's passing on his or her first try. In a sample of 281 recent applicants, 154 passed on their first attempt. Using the 0.10 level of significance, conduct the analysis to determine whether we can conclude that the proportions passing on their first try has increased. What is the test statistic value from the analysis?
Answer:
The test statistic Z = 2 < 2.576 at 0.10 level of significance
Null hypothesis is accepted
Step-by-step explanation:
Step(i):-
Given Population proportion P = 0.49
Q = 1 - P = 1 - 0.49 = 0.51
Given sample proportion
[tex]p^{-} = \frac{x}{n} = \frac{154}{281} = 0.548[/tex]
Level of significance = 0.10
Null hypothesis : H₀ : P = 0.49
Alternative Hypothesis :H₁: P≠ 0.49
Step(ii):-
Test statistic
[tex]Z = \frac{p^{-} -P}{\sqrt{\frac{PQ}{n} } }[/tex]
[tex]Z = \frac{0.548-0.49}{\sqrt{\frac{0.49 X 0.51}{281} } }[/tex]
Z = 2
The tabulated value = 2.576
The calculated value Z = 2 < 2.576 at 0.10 level of significance
Null hypothesis is accepted
What is the correct meaning of the word gripe?
I’m dumb
Answer: Complain
Step-by-step explanation:
Gripe- express a complaint or grumble about something, especially something trivial.
Answer:
It should be complain, tell me if I'm wrong.
Step-by-step explanation:
I used context clues
It is 2,949 miles round trip to Craig's aunt's house.
If he travels to her house 7 times this year, how many miles did he travel in all?
Answer: 2,949 times 7 = 20643 miles he travels in all this year.
The radius of a circle measures 15 ft. What is the circumference of the circle?
Use 3.14 for n, and do not round your answer. Be sure to include the correct unit in your answer
Answer:
[tex]\boxed {\tt 94.2 \ feet}[/tex]
Step-by-step explanation:
The circumference of a circle can be found using the following formula:
[tex]c= \pi d[/tex]
where d is the diameter. We are given the radius, so let's find the diameter.
The diameter is twice the radius.
[tex]d=2r[/tex]
The radius is 15 feet.
[tex]d= 2 * 15 \ ft[/tex]
Multiply.
[tex]d= 30 \ ft[/tex]
Now we know the diameter. Substitute 30 feet in for d.
[tex]c= \pi d[/tex]
[tex]c=\pi * 30 \ ft[/tex]
We are using 3.14 for pi, so substitute it in.
[tex]c=3.14 * 30 \ ft[/tex]
Multiply.
[tex]c= 94.2 \ ft[/tex]
The circumference of the circle is 94.2 feet.
We have formula for this type Questions
c = πdc = πd
Here:-d is the diameter.We have radius in the Question so we can easily find diameter.
According to Question:-The diameter is twice the radius.
=> d = 2rd = 2r
Also we know that the radius is 15 feet.
So:-=> d = 2 * 15 \ ftd
=> d = 2∗15 ft
On Calculation:-=> d = 30 \ ftd = 30 ft
=> c= \pi dc=πd
=> c=\pi * 30 \ ftc=π∗30 ft
=> c=3.14 * 30 \ ftc=3.14∗30 ft
=> c= 94.2 \ ftc=94.2 ft
Therefore:-The required answer is 94.2 feet.Another payment type enabled by smartphones is person-to-person payments, which are apps that allow people to send money electronically from their account to someone else’s, just using their phone. Review this survey data (starting on page 2) and answer the questions. How does the rate of P2P amongst millennials compare to that of all survey participants? Why do you think millennial usage is so much higher?
Answer and Step-by-step explanation:
Person to person payment is an online technology that allows customers to transfer their money and funds from their account to another account through mobile phones. A p2p app allows one user to send money to another user by using an app or website—transaction including anything from paying a dinner bill, rent, or contributing to charity.
The increased obtaining of online banking, mobile banking, and e-commerce by users has paved the way for greater use of person-to-person payments. In the payment markets sending money between smartphones has become an ordinary matter. According to Billtrust, young adults are using a person to person payment more than two generations.
Nearly half of smartphone owners regularly used p2p payment apps. Most people used p2p payment app because it offers better security or most of their peers use it.
Millennials have often led older Americans in their adoption and use of technology. More than 93% millennial (who turns ages 23 to 38 this year) have their smartphones. Similarly, the vast majority of millennials use social media, compared with smaller shares among old generations.
How tall is the flagpole?
X
6 ft
15 ft
4.5 ft
Answer:
x = 20 ft
Step-by-step explanation:
We can use similar triangles and ratios to solve
4.5 ft 6 ft
--------- = ---------------
15 ft x ft
Using cross products
4.5x = 15*6
4.5x =90
Divide each side by 4.5
4.5x/4.5 = 90/4.5
x =20
What is the value of this expression when a = 2 and b = -3?
Answer:
7
Step-by-step explanation:
(a^3 - b^3) / 5
Let a=2 and b = -3
Do the exponents inside the parentheses
(2^3 - (-3)^3) / 5
Then add
(8 - (-27))/5
Subtracting a negative is like adding
(8+27)/5
( 35)/5
7
What is the slope of a line parallel to line s?
A.3/4
B.-4
C.4/3
D.3
the answer is C I think im pretty sure
PLEASE HELP!! Gretchen runs a babysitting business. She charges a family $25 to watch their children for up to 3 hours. If Gretchen watches the children for longer than 3 hours, she charges
an additional $8 per hour. If the family has Gretchen watch their children for 2 hours, how much would Gretchen charge?
1) $33
2) $17
3) $50
4) $25
Answer:
2) $17
Step-by-step explanation:
25/3 is the amount of dollars she charges every hour(you have to round)
times that by 2 is the amount of dollars she is going to charge for 2 hours. (you have to round)
Select each statement that is true for all polynomials
Answer: When two polynomials are multiplied, the product is always a
polynomial.
Step-by-step explanation:
The only true property for polynomials is the third options because when you do multiply polynomials, you can only get a polynomial.
For instance;
Multiply (5x – 6y) by (7x – 4y)
= (5x – 6y)(7x – 4y)
= 35x² - 20xy - 42xy + 24y²
= 35x² - 62xy + 24y²
The result is a polynomial.
The rest of the options will not always yield polynomials.
find the missing value
Answer:
-10
Step-by-step explanation:
Let x be the missing value.
-8 - x = 2
Add both sides by 8:
-x = 2 + 8 = 10
Multiply both sides by -1
x = -10
Answer:
-10
Step-by-step explanation:
[tex](-8)-(-10)=2[/tex]
How do i write this ?
Answer:
1[tex]\frac{5}{9\\}[/tex]
Step-by-step explanation:
When turning remainders into mixed numbers remember Place the remainder as the numerator, or the top number, in your fraction. Put the divisor on the bottom of the fraction, or the denominator.
Proceed to check your work :)
hope this helps
1055 divided by 4 what is the answer
Answer:
263.75 or 263 3/4
Step-by-step explanation:
1055/4=263.75
Jenny drove 715 miles in 11 hours.
At the same rate, how long would it take her to drive 325 miles?
what is the domain of yhe function represented by the graph
Answer:
All real numbers
Step-by-step explanation:
Domain is the set of x-values that can be inputted into function f(x).
We see that we have a linear line that goes on forever. Therefore, any value of x can be plugged in:
(-∞,∞) or all real numbers
factor completely 4x^2-8x-60
Answer:
(x+3)(x-5)
Step-by-step explanation:
4x^2 - 8x - 60
x^2- 2x - 15
(x+3)(x-5)
