Answers
Answer:
217,600
Step-by-step explanation:
Multiply all the sides
Related Questions
A newspaper ran a story concerning the increasing prices of mobile phones. The story stated that mobile phone prices dropped a few years ago, but now are beginning to increase in price because of added features.
• According to the story, the average price of all mobile phones a few years ago was £215.
• A large random sample of mobile phones (n = 200) was taken, and their prices recorded.
• We wish to use a hypothesis test to determine if the average price of all mobile phones is now greater than £215.
Required: Define the hypotheses, and with reference to the applicable random variable distribution, find the rejection region appropriate for this test if we are using the significance level α = 0.05.
Answers
Answer:
H0 : μ = 215
H1 : μ > 215
Rejection region :
Zstatistic > Z0.05
Step-by-step explanation:
Given that:
Average price of all mobile phones was £215
Sample size = 200
Significance level (α) = 0.05
To determine if the average price of all mobile phones is now greater than £215
The Null hypothesis (H0) :
H0 : μ = 215
Alternative hypothesis (H1) :
H1 : μ > 215
The rejection region :
|Zstatistic > Zα|
α = 0.05 ; Z0.05
Rejection region :
Zstatistic > Z0.05
What is the value of tan c
Answers
Answer:
In trigonometry, the tangent of an angle in a right-angled triangle is equal to the ratio of opposite side and the adjacent side of the angle. Tan 30 degrees is also represented by tan π/6 in terms of radians. The exact value of tan 30° is 0.57735.
which of the following functions is graphed below
Answers
Answer:
A.
Step-by-step explanation:
When X is zero y is 7.
It looks like the y intercept is 7 hard to tell in the picture
Answer:
im going to guess C
Step-by-step explanation:
How do you do these questions?
Answers
Answer:
k = 0.2
A = (M / P₀) − 1
Step-by-step explanation:
dP/dt = kP
When t = 0, P = 1000 and dP/dt = 200.
200 = 1000k
k = 0.2
P = M / (1 + Ae⁻ᵏᵗ)
When t = 0, P = P₀.
P₀ = M / (1 + A)
1 + A = M / P₀
A = (M / P₀) − 1
need help on number 12 and 13 please!
Answers
Answer:3/4
4/3
Step-by-step explanation:
it i this
f (x) = 20 - (1.27)
growth or decay ?
Answers
Answer:
Decay...? Read below
Step-by-step explanation:
Assuming you meant to put 20 - (1.27)x, it is decay. As the x increases, the y decreases, making it decay.
Find the area of the circle.
Answers
Answer:
50.24 centimeters squared
Step-by-step explanation:
The diameter (d) is 8 which means the radius is 4 (8/2)
we use the formula pi x radius^2
It says to use 3.14 for pi
so the equation is 3.14(4)^2=3.14 x 16 = 50.24
Answer:
50.24 centimeters squared
Step-by-step explanation:
i just took the test
Find the value of z such that 0.02 of the area lies to the right of z. Round your answer to two decimal places.
Answers
The value of z-score such that 0.02 of the area lies to the right of z would be 2.06.
Given that,
0.02 of the area lies to the right of z.
Now, for the value of z such that 0.02 lies to the right of z, we can make use of the standard normal distribution table.
Since to determine the value of z such that 0.02 of the area lies to the right, we need to find the z-score associated with the cumulative probability of (1 - 0.02) = 0.98
Now for the value of 0.98 in the standard normal distribution table, we find that the corresponding z-score is 2.06.
Therefore, the value of z, rounded to two decimal places, is 2.06.
To know more about z-score click here;
brainly.com/question/15016913
#SPJ4
The value of z such that 0.02 of the area lies to the right of z is approximately 2.05 (rounded to two decimal places).
To find the value of z such that 0.02 of the area lies to the right of z, we need to determine the z-score associated with that probability.
Since we're looking for the area to the right of z, we can use the standard normal distribution table or a statistical calculator to find the corresponding z-score.
By searching the table or using a calculator, we can find that the z-score associated with a right-tail probability of 0.02 is approximately 2.05.
for such more question on area
https://brainly.com/question/15822332
#SPJ8
Find n and r 10 pointssss
Answers
And
R is 5.2
Consider the equation 5x + 7 = 2x + 28. Your tasks to explain the steps you would take, in
order, to solve the equation for x. Imagine that you are writing this for someone who is learning
about this process for the first time. You would be as specific as possible and write in complete
sentences.
Answers
Answer:
x=7
Step-by-step explanation:
Step 1: Put the variables and constants on the same side and change their signs so it'll look like this 5x-2x = 28 - 7, you always move the smaller number to either the left or right depending on its position in the problem.
Step 2: solve each side normally like this, 3x = 21
Step 3: to get x by itself divide 3 on both sides and you should get x=7
Here's a run through of the steps
5x+7=2x+28
-7 -7(subtract 7 from both sides
5x=2x+28-7
-2x -2x(subtract 2x from both sides)
5x-2x=28-7
3x=21
3x/3 = 21/3 (divide 3 from both sides)
x=7
A swimming pool has two pipes coming into it to fill it with water. One pipe takes 16 hours to fill it. The other takes 12 hours to fill it. How many hours will it take both pipes to fill the pool?
Answers
Answer:
8 hours
Step-by-step explanation:
8 hours because half of 16 is 8 and half of 12 is 6
If it takes 6 hours to fill one half then the other 2 hours would go to the other pipe making it 8 hours
Find the distance between (6,4) and (-6,-5) by using the distance formula
Answers
Answer:
[tex]\boxed {d = 15}[/tex]
Step-by-step explanation:
Use the Distance Formula to help determine the distance between two given points:
[tex]d = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}}[/tex]
First point: [tex](x_{1}, y_{1})[/tex]
Second point: [tex](x_{2}, y_{2})[/tex]
-Substitute both given points:
[tex](x_{1}, y_{1}) = (6, 4)[/tex]
[tex](x_{2}, y_{2}) = (-6, -5)[/tex]
[tex]d = \sqrt{(-6 - 6)^{2} + (-5 - 4)^{2}}[/tex]
-Solve for the distance:
[tex]d = \sqrt{(-6 - 6)^{2} + (-5 - 4)^{2}}[/tex]
[tex]d = \sqrt{(-12)^{2} + (-9)^{2}}[/tex]
[tex]d = \sqrt{144 + 81}[/tex]
[tex]d = \sqrt{225}[/tex]
[tex]\boxed {d = 15}[/tex]
Therefore, the distance is [tex]15[/tex].
1. Simplify the expression.
9m - 5n + m - 2n
2.Simplify the expression.
3 - 1 v + 7v - 1
Answers
Answer:
1. 10m - 7n
2. 6v - 1
Step-by-step explanation:
9m - 5n + m - 2n
10m - 7n ( combine like terms).
2. - 1 v + 7v - 1
6v - 1 (combine like terms)
Answer:
1. 9m-7m
2. 6v+2
Step-by-step
Im pretty sure that the answer
The mean score on a set of 16 tests is 90. What’s the sum of all the test scores?
Answers
subtract 2x³-4x²+3x+5 from 4x²+x²+x+6
Answers
Answer:
(-2x^3)+(9x^2)
Step-by-step explanation:
Answer is above. Hope it helps!
helppppp me please .
Answers
Answer:
stuff
Step-by-step explanation:
180-72 = 108
a2 = 108º
a3 = 108
a4 = 72
a4+a6 = 180 so
a11+a13 + 180...
PLEASE ANSWER FAST ITS UNIT TEST
The graph of the equation y = ax2, where a is >0, is shown below
If a is multiplied by -3, the graph of the new equation is
A.
wider and opens downward
B.
wider and opens upward
C.
narrower and opens downward
D.
narrower and opens upward
Answers
Answer:
a or c
Step-by-step explanation:
Johnny took a math test with 25 questions He answered 22 questions correctly in order to get an a he had to get 90% of them right. Did Johnny get an a on his math test?
Answers
Answer:
88%
Step-by-step explanation:
No Johnny boy did not
How to silver (10 points)
Answers
Answer:
there
Step-by-step explanation:
10.
TP = 20-12
TP = 8
SP = SQ
SP = 20
RQ = TP
RQ = 8
S-------15.5
20------12
12s = 310
s = 310/12
s =~25,8
11.
75--------46
100-------b
75b = 4600
b = 4600/75
b =~ 61,3
l² = 61,3² + 46²
l² = 3757,69 + 2116
l² = 5873,69
l = [tex]\sqrt{5873,69}[/tex]
l =~ 76,7
9.2x8.9= please put shown work on it please and thank you if you do then i will mark you as the brainist
Answers
Answer:
81.88 is the answer
Step-by-step explanation:
Please answer this simple math question(CLICK TO SEE PICTURE) ITS MULTIPLE CHOICE. Answers are not exact! (it's not the one I chose) TY!
Answers
Help me ASAP pls. it means the world to me
Answers
A parallelogram has a base of 9 units and a corresponding height of į units. What is its area?
Do not include units (square units) in your answer.
Answers
Answer:
[tex]Area = 9j[/tex]
Step-by-step explanation:
Given
[tex]Base = 9\ units[/tex]
[tex]Height = j\ units[/tex]
Required
Determine the area
Area of parallelogram is calculated as thus:
[tex]Area = base * Height[/tex]
Substitute values for Base and Height
[tex]Area = 9 * j[/tex]
[tex]Area = 9j[/tex]
Hence, the area of the parallelogram whose base is 9 units and height is j units, is 9j
zach says that the expressions 6x - 36 and 3(2x -12) are equivalent
Answers
Answer:
True
Step-by-step explanation:
When you distribute the 3, you get x(2x3)-(12x3)
2x3=6
12x3=36
so 6x-36
and that is equivalent to the first expression.
2. Mr Alison fill ups his car at the gas station. He also gets a car wash at the station and visits with the manager, Then he drives to the next town on buisness
Which graph did you not choose for exercise 1 and 2?
Answers
Answer:
Hmm graph 3, i think.
Step-by-step explanation:
An adult elephant that is 10 ft tall casts a shadow that is 15 ft long. Find the length of the shadow that is a 8 ft telephone booth casts.
A. 7ft
B. 12 ft
C. 23 ft
D. 5 ft
Answers
Answer:
12 feet long bc of cross multiplying then dividing the product by 10 which gives you 12!
At a noodles and company restaurant, the probability that a customer will order a non alcoholic beverage is .53. Find the probability that in a sample of 12 customers at least 9 will order an non alcoholic beverage
Answers
¿ cuáles son los adjetivos? y ¿ cuáles son los adjetivos ? por favor es para hoy
Answers
Answer:
1) maldava y despota
2) pequenos
Step-by-step explanation:
Use the distributive property to expand 0.05(50 + 40).
Answers
Answer:
4.5
Step-by-step explanation:
A bookcase has 5 of these bookshelves that are 42 inches long. How many FEET of shelf space is there? Explain your reasoning.
Answers
Answer:
17.5
Step-by-step explanation:
The first step is to convert one bookshelf into feet, so 42 divided by 12=\
3.5
Now, we have 5 of these shelves, so we have to do 3.5 x 5=17.5.