Answer:
Standard error = 0.4
Step-by-step explanation:
Step 1
We find the Standard Deviation
The formula = √(x - mean)/n - 1
n = 15
Mean = 1.93 hours
= √(0- 1.93)² + (0-1.93)² +(0- 1.93)²+( 0- 1.93)²+ (1- 1.93)² + (1- 1.93)² +(1 - 1.93)² +(2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + ( 2 - 1.93)² +(4 - 1.93)² +(4 - 1.93)² + (5 - 1.93)²/15 - 1
= √(3.737777776 + 3.737777776 + 3.737777776 + 0.871111111 +0.871111111 + 0.871111111 + 0.004444444445+ 0.004444444445 + 0.004444444445 + 0.004444444445 + 0.004444444445 + 1.137777778 + 4.271111112 + 4.271111112 + 9.404444446)/15 - 1
= √2.352380952
= 1.533747356
Step 2
We find the standard error
The formula = Standard Deviation/√n
Standard deviation = 1.533747356
n = 15
= 1.533747356/√15
= 1.533747356 /3.87298334621
= 0.39601186447
Approximately = 0.4
Therefore, the standard error is 0.4
Jason says that 10 less than one third of his age is 11 years old. How old is Jason?
Answer:
63
Step-by-step explanation:
Jason age will be 63 years.
What is an expression?
Expression in math is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
The condition is given as;
'' Jason says that 10 less than one third of his age is 11 years old. ''
Now,
Let age of Jason = x years
Then, By the given condition we formulate;
1/3 x - 10 = 11
Solve for x as;
1/3 x - 10 = 11
Add 10 both side;
1/3 x - 10 + 10 = 11 + 10
1/3 x = 21
Multiply by 3;
x = 63
Thus, Jason age will be 63 years.
Learn more about the expression visit:
https://brainly.com/question/26430239
#SPJ5
Linear equation
A line with the slope of 1/2 pass through the point (3,-2)
a) Write the equation of the line in Point - Slope Form.
b) Write the equation of the line in Slope - intercept form.
Answer:
see explanation
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = [tex]\frac{1}{2}[/tex] and (a, b) = (3, - 2) , thus
y - (- 2) = [tex]\frac{1}{2}[/tex] (x - 3) , that is
y + 2 = [tex]\frac{1}{2}[/tex]( x - 3) ← in point- slope form
(b)
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = [tex]\frac{1}{2}[/tex] , thus
y = [tex]\frac{1}{2}[/tex] x + c ← is the partial equation
To find c substitute (3, - 2) into the partial equation
- 2 = [tex]\frac{3}{2}[/tex] + c ⇒ c = - 2 - [tex]\frac{3}{2}[/tex] = - [tex]\frac{7}{2}[/tex]
y = [tex]\frac{1}{2}[/tex] x - [tex]\frac{7}{2}[/tex] ← in slope- intercept form
There are roses in a vase of flowers. The rest are daisies. (a) What is the ratio of roses to daisies? (b) What is the ratio of daisies to all flowers in the vase?
Answer:
need more info how many roses are there and how many daises are there?
Step-by-step explanation:
A=1/2h(a+b)
what is h
Answer:
[tex] h = \frac{2 A}{(a + b)}[/tex]
Step-by-step explanation:
[tex]A = \frac{1}{2} h(a + b) \\ \\2 A = h(a + b) \\ \\ \frac{2 A}{(a + b)} = h \\ \\ \huge \red{ \boxed{h = \frac{2 A}{(a + b)} }}[/tex]
The table below shows the number of students who attend various after-school activities.
After-School Activities
Activity
Number of Students
Spanish Club
19
Basketball
24
Drama
15
Homework Help
17
Soccer
20
Which ratio compares the number of students in the Spanish club to the total number of students?
19:95
20:95
95:24
95:19
Answer:
A, 19:95
Step-by-step explanation:
there are 19 Spanish students and 95 total students
Answer:
A
Step-by-step explanation:
i got it right (: on edg
7.2 divided by 42.12
Answer:
0.170940171
Step-by-step explanation:
The required divide of 7.2 divided by 42.12 is 0.170940171 which is none terminating recurring decimal.
Given that,
To evaluate the solution of the numeral 7.2 divided by 42.12.
A recurring Decimal is defined as also named repeating decimal, is a decimal number that only consists of repeating digits after a certain interval after the decimal. For example, 94.642642642..., 213.569569... etc.
Here,
According to the question,
7.2 / 42.12 = 0.170940171
Which is a recurring decimal.
Thus, the required divide of 7.2 divided by 42.12 is 0.170940171 which is none terminating recurring decimal.
For more information about recurring decimals check it out here:
brainly.com/question/820308
#SPJ2
Arabica coffee costs $28 per pound and Robusta coffee
costs $8.75 per pound. How many pounds of Arabica coffee
must you mix with 3 pounds of Robusta coffee to make a
blend that costs $15.50 per pound?
Answer:
1.62 pounds
Step-by-step explanation:
Let x be the pounds of Arabica
Take the number of pounds times the cost of each of the coffees individually
This must be equal to the number of pounds times the cost together
x * 28 + 8.75 *3 = ( x+3) 15.50
28x+26.25=(x+3)15.50
Distribute
28x+ 26.25 = 15.50x + 46.50
Subtract 15.50x from each side
28x-15.50x +26.25 = 15.50x +46.50-15.50x
12.50x + 26.25 = 46.50
Subtract 26.25 from each side
12.50x +26.25-26.25 = 46.50-26.25
12.50x = 20.25
Divide each side by 12.5
12.5x/12.5 = 20.25/12.5
x =1.62
Answer:
I think its 1.62 pounds
If m\angle CED=101 then what is m\angle CEH∠CEH
Answer:
m∠CEH = 79°
Step-by-step explanation:
From the picture attached,
∠CED and ∠CEH are the pair of linear angles.
Since, pair of linear angles are supplementary angles.
m∠CED + m∠CEH = 180°
101° + m∠CEH = 180°
m∠CEH = 180° - 101°
= 79°
Therefore, measure of angle CEH is 79°.
The school that Danielle goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 10 adult tickets and 13 student tickets for a total of $234. The school took in $97 on the second day by selling 5 adult tickets and 4 student tickets. What is the price each of one adult ticket and one student ticket?
Answer:
Price of Adult tickets =$ 13
Price of student tickets =$ 8
Step-by-step explanation:
Lets us represent the price of adult tickets = x
The price of student tickets = y
On the first day of ticket sales the school sold 10 adult tickets and 13 student tickets for a total of $234.
= 10 × x + 13 × y = $234
= 10x + 13 y = 234
The school took in $97 on the second day by selling 5 adult tickets and 4 student tickets.
5 × x + 4 × y = $97
= 5x + 4y = 97
Hence:
10x + 13y = 234......Equation 1
5x + 4y = 97......... Equation 2
We solve by elimination method
Multiply the equation 1 by 5 and equation 2 by 10 which are the coefficient of x
10x + 13y = 234......Equation 1 × 5
5x + 4y = 97......... Equation 2 × 10
50x + 65y = 1170......Equation 3
50x + 40y = 970..... Equation 4
Subtract Equation 4 from Equation 3
25y = 200
y = 200/25
y = 8
Therefore the price of student ticket = $8
Note that
5x + 4y = 97......... Equation 2
5x + 4 × 8 = 97
5x = 97 + 32
5x = 65
x = 65/5
x = 13
Therefore price of adult tickets = $13
Please help!!! :)))))
Answer:
An inscribed angle is an angle formed by two chords in a circle which have a common endpoint. This common endpoint forms the vertex of the inscribed angle. ... A central angle is any angle whose vertex is located at the center of a circle.
Step-by-step explanation:
9. Inscribed
10. Central
11. Central
12. Inscribed
13. Central
14. Inscribed
Hope this helped! ; )
Answer:
Any angle with O as the vertex is a central angle. Any angle with any other letter in the center of the angle is inscribed.
Step-by-step explanation:
volume of saturn: 827,130,000,000,000 km^3 = __×10^__km^3
2x + y - Z= 17
Find z, when x=10 and y=2.
(Hint: Substitute, simplify, and solve)
helpppp !
Answer:
hi so the answer is onsline find it there plz
Answer:
therefore z is 5
Step-by-step explanation:
2x+y- Z=17
2(10)+2-Z=17
20+2 -Z=17
22-Z =17
22-17=Z
5=Z
Z=5
A half-marathon 13 miles, how many kilometers is that?
Answer:
20.921
Step-by-step explanation:
I looked it up
hi i need help really bad
Answer: 7
Step-by-step explanation:
(3(2)-4)+(-(2)+7)
-2(4ab+3-4c) Use the distributive property to rewrite the expression above
Answer:
-8ab-6+26
Step-by-step explanation:
-2(4ab+3-4c)
-2(4ab) = -8ab
-2(3) = -6
-2(-4c)= 2c
Combine:
-8ab-6+26
find the value of a, x, y and z
PLEASE HELP ME !!!!!!
Answer:
According to the parallel lines theorem, the angle ∠JOP = ∠OPK
Thus, a = 45°.
Now according to the opposite angles theorem, ∠OPK = ∠NPL
thus, x = 45°.
[I could not find y and z in the diagram, so I could no help you with that]
Triangle EFG has vertices E(-3, 1), F(1, 1), and G(4, 5). Find the coordinates of the image of point F
after a reflection across the x-axis.
O (1,1)
None of the other answers are correct
O (1,-1)
o (-1, -1)
O (-1,1)
Answer:
(1,-1)
Step-by-step explanation:
if its asking for a reflection on the x-axis, change the y's to the opposite of what it is.
Example, (5,6) change it to (5,-6)
its the same thing for the reflection on the y-axis
(7,-8) change it to (-7,-8)
Abbie, Brad, Cindy, and Dan went bowling one night. For fun, they decided to team up the girl's against the boys, with the highest total score for the each team winning. Abbie scored 16 more than Brad. Cindy's score was 43 less than Dan's. Brad outscored Dan by 23. It the total scored by all four kids was 599, what was each person's score and what was the final score for the match?
Solve for t: 5t - 4 = 11
Answer:
t = 3
Step-by-step explanation:
5t - 4 = 11
5t - 4 + 4 = 11 + 4 (you do the plus 4 to get rid of the -4 and what you do to one side you have to do to the other.)
5t = 15
5t/5 = 15/5 (To get red of the 5 do reverse operation.)
1t = 3 simplified to
t = 3
Hope it helped (brainlyest pls) ;)
Answer:
3
Step-by-step explanation:
5t - 4 = 11
(5 x t) - 4 = 11
5 x 3 = 15
15 - 4 = 11
I need help, please i'll try to give you the brainliest.
Answer:
6 times -3
Step-by-step explanation:
PEMDAS
perenthesis, exponents, multiplication, division, addition, subtraction
Answer:
-12 ÷6
-2×(-3)
6+8=14
Step-by-step explanation:
Mrs. Lee is putting a new fence around her square garden. The garden is 144
square feet. How much fencing will Mrs. Lee need to enclose the entire garden?
9 and 10 ?????pleaseee
Multiply
Step-by-step explanation:
Take all the numbers and multiply
need help on maths homework
Thanks to anyone who can help me on this
Answer:
331.705 I believe
Step-by-step explanation:
You just move the decimal point as many times as it is moved in the first problem. So 1793 to 1.793 means you moved the decimal to the left 3 times.
the ratio of children to teachers at a preschool is 14:5. How many children are at the preschool if there are 30 teachers
Answer:
84
Step-by-step explanation:
5*6=30
14*6=84
If you need further explanation just tell me :D
the answer is 24 ....
Answer:
A equation with 24 as an answer would be 6*4
Step-by-step explanation:
I need help with this question I wasn’t sure on what to pick as the answer.
Answer: 7 5/7 (the bottom one)
Step-by-step explanation:
30 divided by 2 = 15 (do the same to 42 and get 21)
This then creates the fraction: 15/21
Now, divide this fraction by 3 and get 5/7
Add back in the seven because you aren't dividing the whole number.
Your final answer is now 7 and 5/7 (together: 7 5/7)
what best describe the relationship between 1 and 2
Answer:
I think your correct
Step-by-step explanation:
the answer you picked looks like an image on my notes
sorry if its not
In a class of 200 students. 20 offered Physics, 90 offered Chemistry. Offered Mathematics while 24 did not offer any of the three subjects. Twenty three (23) students offered Physics and
Chemistry, 41 offered Chemistry and mathematics while 8 offered all three subjects.
Draw a Venn diagram to illustrate the information
Find the probability that a student selected at random from the class offered i.
Physics only ii.Exactly two of the subjects
Answer:
??????????????????????
Step-by-step explanation:
mmm+#-#+273(-2(2
answer as fast as possible
a.2
b.4
c.6
d.8
For weeding the garden Eugene was given
$8. Now he has $38. How much money did
he have before?
Answer:
$30
Step-by-step explanation:
$38-$8=$30
Answer: 30
Since Eugene just got $8, and the question is asking how much he had before that, we have to subtract 8 from 38.
38 - 8 = 30
So, the answer is 30. Hope this helps!