Answer:
Step-by-step explanation:
H0 : μ ≥ 6
H1 : μ < 6
Test statistic :
n = 20
Sample Mean, x = 3
σ = 1.5
Test statistic = (x - μ) ÷ σ/sqrt(n)
Test statistic = (3 - 6) ÷ 1.5/sqrt(20)
Test statistic = - 3 / 0.3354101
Test statistic = −8.944271
Since, sample size is < 30 ;
Obtaining the Critical value using the from T;
Tcritical at 0.05, df = 19 = - 1.729
Tstatistic < Tcritical
−8.944271 < - 1.729
Hence, we reject the Null:
We can conclude that there is significant evidence that the number of complaints received by Lara music store is different from number of complaints received by music stores in general.
Solve | 2x - 6 | = |x| by graphing
Answer:
X=2 & X=6
Step-by-step explanation:
If you graph the equation (I recommend using desmos) you can see that X equals 2 & 6.
What is the solution to the system of equations graphed below?
o
A. (1,1)
B. (0, -4)
C. (2.5)
D. (-5.-3)
Answer: b
Step-by-step explanation:
"Two planes leave the airport at the same time. Plane 1 travels just 9 miles east from
the airport while Plane 2 travels 40 miles north from the airport. What is the diagonal
distance from plane 1 and 2?"
Olivia baked 21 mini-loaves of banana bread to be sliced for snacks at a craft fair. She will place an equal number of loaves in 4 different locations.
How many loaves will be at each location?
Divide to find the quotient and remainder.
r
4 parenrightzb 21
Decide how to use the quotient and remainder to answer the question.
There will be loaves at each location.
Look at screen shoottttttttttttttttttttttttttttttttttt
.On 1st March 2001, the ratio of Freddie’s age to his mother’s age was 1:11
On 1st March 2018, the ratio of Freddie’s age to his mother’s age was 2:5
Write the ratio of Freddie’s age to his mother’s age on 1st March 2030
Answer:
[tex]Ratio =16 : 31[/tex]
Step-by-step explanation:
Let
x = Freddie's age and y = His mother's age
Given
2001:= [tex]x : y = 1 : 11[/tex]
2018:= [tex]x +17: y + 17= 2 : 5[/tex]
Required
The ratio of their age in 2030
[tex]x : y = 1 : 11[/tex]
[tex]x +17: y + 17= 2 : 5[/tex]
Express as fractions
[tex]\frac{x}{y} = \frac{1}{11}[/tex] --- (1)
[tex]\frac{x+17}{y+17} = \frac{2}{5}[/tex] -- (2)
In (1), make y the subject
[tex]\frac{x}{y} = \frac{1}{11}[/tex]
[tex]y = 11x[/tex]
Substitute [tex]y = 11x[/tex] in (2)
[tex]\frac{x+17}{y+17} = \frac{2}{5}[/tex]
[tex]\frac{x+17}{11x+17} = \frac{2}{5}[/tex]
Cross Multiply
[tex]5(x +17) = 2(11x + 17)[/tex]
[tex]5x +85 = 22x + 34[/tex]
Collect like terms
[tex]22x - 5x = 85 - 34[/tex]
[tex]17x = 51[/tex]
[tex]x =3[/tex]
[tex]y = 11x[/tex]
[tex]y = 11*3[/tex]
[tex]y = 33[/tex]
This means that: In 2001, Freddie was 3 and his mother was 33
In 2030 (29 years after);
Freddie will be: 3 + 29 = 32
His mother will be: 33 + 29 = 62
So, the ratio is:
[tex]Ratio =32 : 62[/tex]
Divide by 2
[tex]Ratio =16 : 31[/tex]
La densidad del agua es 1g/cc determinar su equivalente en libras/pie3 y en kg/m3
Answer:
Las equivalencias de la densidad del agua son: Densidad kg/m3 = 1000 kg/m3. y Densidad lb/pie3 = 0.016 lb/pie3. Explicación paso a paso: La densidad del agua es de 1g/cc = 1 g/cm3.
figure above shows a bkock of isometric projection draw the 1st angle projection taking F a as a font elevation
117AUG 2017
Answer:
ufhvuaejahejgjbhrthugjwergkwer
Step-by-step explanation:
erlgluerhbferihgqerhggyefuqwheuhqhwgh4ht43y3yhebr
Carlos walked to school on 14 of the 20 school days in February. Which value is equivalent to the fraction of the school days in February that Carlos walked to
school?
A 70%
B. 0.07
C. 0.142
DO 56%
Answer: A
Step-by-step explanation: 14/20 = 70%
Like the land bridge people, what factors might have pulled the Solutreans into North America?
overpopulation
job opportunities
better schools
grasses and animals
Answer:
mayne because of grasses and animals
Answer:
D
Step-by-step explanation:
Helpppp!!!
Which equation can be used to find the length -of AC?
Can someone help me with this plz??
Answer:
f(-3) = -2(-3)^3 - 3
f(-3) = 54 - 3
f(-3) = 51
g(3) = -5(3) + 4
g(3) = -15+4
g(3) = -11
Hope this helps!
I need help with this
Answer:
The length of AB is 18
Step-by-step explanation:
Do the pygotham theorem
24^2 + 7^2 = 625
Square root the answer
[tex]\sqrt{625}[/tex] = 25
Line BO equals 7 because CO is 7 and they are both radiuses
Subtract the answer to the length BO
25 - 7 = 18
18 is the length of AB bro
Simplify the expression (8n^4-6n+8n^2)+(6n^4-4)
Answer:
(8n^4-6n+8n^2)+(6n^4-4)
8n^4 + 8n^2 - 6n + 6n^4 - 4
14n^4 + 8n^2 - 6n - 4
Step-by-step explanation:
Is the value 5 a solution to the inequality r + 4 < 7 ?
UHM- I NEED HELP AGAIN- YOU"LL GET 100 POINTS! <3
Answer:
no
Step-by-step explanation:
5+4=9 which is greater than 7
Answer:
No, i don't think so
Step-by-step explanation:
2.
(02.05 MC)
Triangle PQR is transformed to triangle P′Q′R′. Triangle PQR has vertices P(3, −6), Q(0, 9), and R(−3, 0). Triangle P′Q′R′ has vertices P′(1, −2), Q′(0, 3), and R′(−1, 0).
Plot triangles PQR and P′Q′R′ on your own coordinate grid.
Part A: What is the scale factor of the dilation that transforms triangle PQR to triangle P′Q′R′? Explain your answer. (4 points)
Part B: Write the coordinates of triangle P′′Q′′R′′ obtained after P′Q′R′ is reflected about the y-axis. (4 points)
Part C: Are the two triangles PQR and P′'Q′'R′' congruent? Explain your answer. (2 points)
Answer:
P' = 1/3 P
reflection in the y-axis just changes the sign of all the x-values.
Since P" ≅ P', and P' is smaller than P, P" cannot be ≅ to P
It is, however, similar to P.
Answer:
P' = 1/3 P
Step-by-step explanation:
Reflection in the y-axis just changes the sign of all the x-values. Since P" ≅ P', and P' is smaller than P, P" cannot be ≅ to P . It is, however, similar to P.
Good luck!!
Evaluate :
32¯2/5 how do i evaluate this? With the minus.
Answer:
I'm sorry I don't know the answer. But have you tried Photomath? it helps me so much! have a good day/night! ❤️
n = 40, p=0.95, X = 38
P(38) =
Answer:
36.1
Step-by-step explanation:
What fractions will make the comparison true? 5/8>
Answer:
7/10
Step-by-step explanation:
i7/10 is greater than 5/8
279+454546+21+968= solve answer
Answer:
455,814
Step-by-step explanation:
here you go have a good one
Answer: 279+454546+21+968= 455814
Step-by-step explanation:
add 279+21=300
Then add 968 to 300 witch 968+300= 1268
Lastly add 1268+454546=455814
Colleen buys a movie for $32 and pays 9% sales tax. Her cousin, Brad, lives in another state. Brad buys the same movie for $38 and pays 7% sales tax. Who pays more sales tax? How much more?
HEEEELP!!!
Answer:
Colleen pays more sales tax. She pays $0.22 more sales tax than Brad.
Step-by-step explanation:
convert the percentage to a decimal and multiply by the amount paid to find sales tax
$32*0.09= $2.88
$38*0.07= $2.66
2.88-2.66= $0.22
hope this helps, crown if u can pls <3
Where should you place parentheses in the expression 2 + 6 ÷ 2 + 4 × 3 so that the value of the expression is 16? Multiple choice question
Answer: (2+6)÷ 2 + 4 × 3
Answer:
4x3
Step-by-step explanation:
Tomás is gathering data about the sleeping habits of high school students. So far, he has completed 3 different surveys, each with 70 respondents.
What should Tomás expect as he continues his data-gathering process?
As the number of surveys increases, the mean of the sample means will approach ______, and the means will be ___________.
70 Points
Answer:
The population mean
Normally distributed
Please give me brainliest, I really need it.
a)As the number of surveys increases, the mean of the sample means will approach the population mean.
b)Means will be normally distributed.
What is a normal distribution?A normal distribution is a probability distribution that is symmetric about the mean, and data near the mean are more frequent than data far from the mean.
As the number of surveys increases, we will have more data.
So, the mean of the sample means will approach the population mean.
Means will be normally distributed because each survey has the same number of respondents.
Thus, a)as the number of surveys increases, the mean of the sample means will approach the population mean.
b)Means will be normally distributed.
To get more about normal distribution visit:
https://brainly.com/question/4079902
Write a compound statement that results in a true conjunction.
Answer:
p->q .......................
On a BWIA flight, 2/3 of the
passengers are from Trinidad.
If there are 189 passengers
altogether, how many were
from Trinidad?
Answer:
126 passengers from Trinidad.
Step-by-step explanation:
Given that,
On a BWIA flight, 2/3 of the passengers are from Trinidad.
Total passengers = 189
We need to find how many were from Trinidad. It can be calculated by finding 2/3 of 189 such that,
[tex]P=\dfrac{2}{3}\times 189\\\\=126[/tex]
Hence, there were 126 passengers from Trinidad.
Hey everyone. I need the answer to this ASAP!: Michael knows that 2 cans of paint is the exact amount he needs to paint a 10-foot by 12-foot wall. Graph the relationship between the total square feet of the walls and the number of paint cans necessary to paint them. Show your work or explain how you got your graph in part A . There is a picture of the graph attached.
Answer:
See attachment for graph
Step-by-step explanation:
Given
[tex]2 cans = 10ft\ by\ 12ft[/tex]
Required
Graph the relationship between both parameters
First, calculate the area;
[tex]Area = 10ft * 12ft[/tex]
[tex]Area = 120ft^2[/tex]
This implies that: (2, 120) i.e. 2 cans for 120ft^2.
So we have:
(0,0) and (2,120)
(0,0) implies that: 0 cans for 0 square feet
Calculate the slope:
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{120 - 0}{2-0}[/tex]
[tex]m = \frac{120 }{2}[/tex]
[tex]m = 60[/tex]
The equation is:
[tex]y = m(x - x_1) + y_1[/tex]
So, we have:
[tex]y = 60 * (x - 0) + 0[/tex]
[tex]y = 60 * (x )[/tex]
[tex]y = 60 x[/tex]
See attachment for graph
Answer:
Step-by-step explanation:
Yes or No: Is this triangle a Right Triangle with side measures 21, 28, 352
Work out the area of a rectangle with base, b = 20mm and perimeter, P = 60mm.
b
The diagram is not drawn to scale.
base+perimeter
20mm+60mm
=80mm
What is the value of ?
18 - (2 x ? ) = ? x 4
Answer:
?= 3
Step-by-step explanation:
let x = ？
18-2x=4x
6x=18x
x=3
Answer:
The value of ? is 3
Step-by-step explanation
Lets call ? x
18-2x = 4x
18=6x
3=x
F(x,y)=-2x^2-2xy-2y^2+35x+42y-158
Answer:
x^3 + x^2 + 2x^2y + xy^2 + y^2 + 2xy
Step-by-step explanation:
ihope makaktulong
if wrong correct me
