Answer:
Step-by-step explanation:
700(7/10)
4900/10
490 students carrying backpack
The graph of a sine function is shown. Plot the line that represents the midline of this periodic function.
Answer: The midline should be a horizontal one, at y=4
Step-by-step explanation: See above answer.
Midline of the periodic function given in the picture will be y = 4.
Mid-line of the periodic function: Midline of a periodic function is the line located half-way between the maximum and the minimum values.
From the graph attached in the question,
Maximum value of the periodic function → y = 5
Minimum value of the function → y = 3
Midline of the function → [tex]y=\frac{3+5}{2}[/tex] ⇒ y = 4
Therefore, midline of the periodic function given in the picture will be y = 4.
Learn more about the midline of the periodic function here,
https://brainly.com/question/11749227?referrer=searchResults
Andrea receives a $40 gift card to use at the roller skate rink. It costs her $8 per visit to skate. Write a function relating the value of the gift card, v, in terms of the number of visits,n
Answer:
its b
Step-by-step explanation:
Answer:
Step-by-step explanation:
b
Elis, Raine and Avery buy a boat for $33 000.
Elise pays $12 000, Raine pays $6000 and Avery pays the rest.
Six years later they sell the boat for $25 300.
They share the money in the same ration that they bought the boat.
How much money does Avery lose on the sale of the boat?
Amount Avery paid: 32,000-12,000-6,000 = 15,000
Divide portion she paid by total cost:
15,000/33,000
Simplify to 15/33
Multiply the amount the boat was sold for by her portion:
25,300 x 15/33 = 11,500
Subtract the amount she got from the amount she paid:
15,000 - 11,500 = 3,500
She lost $3,500
Answer:
yes
Step-by-step explanation:
yes!
which Is NOT a linear function?
I think its Y = x+ 3
Please help me with the math please?
Answer:
count how many flowers there are on number 1
Answer:
okay so 3. equals 20
4. 1st one 2nd one 3rd one equals 30
5. first one 2nd one 3rd one equals 30
6. first one second one equals 20
7. first one second one equals 20
Step-by-step explanation:
Calculate the length of the unknown side of this right-angled triangle.
9 cm
8 cm
Answer:
12.04
Step-by-step explanation:
Formula:
a² + b² = c²
8² + 9² = c²
64 + 81 = c²
145 = c²
c = 12.04
Please help please help
This is a quadratic function and I have to use a square roots method please help me
F(x)=3x^2+7x-20
Answer:
the answer can be 1.667 or -4
5.5 + n = 10 please help
Answer:
n = 4.5
Step-by-step explanation:
10 - 5.5 = n
Answer:
I feel like its 4.5
Step-by-step explanation:
Is x=3, y=2 a solution to the system of equations shown? Justify your answer.
y = 2x - 4
3x + 2y = 8
Answer:
It is not a solution.
Step-by-step explanation:
y = 2x - 4
2 = 2(3) - 4
2 = 6 - 4
2 = 2
The point is a solution to the first equation.
3x + 2y = 8
3(3) + 2(2) = 8
9 + 4 = 8
11 ≠ 8
The point is only a solution for one equation. It is not a solution to the system.
Hope this helps.
The Hu family goes out for lunch, and the price of the meal is $54. The sales tax on the meal is 7%, and the
family also leaves a 15% tip on the pre-tax amount. What is the total cost of the meal?
Answer:
The total cost of meal is $65.34
Step-by-step explanation:
Price of the meal = $54
Sales tax on meal = 6%
Tip given= 15% on pre-tax amount
We need to find total cost of meal.
First finding sales tax amount:
We need to calculate 6% of 54

So, the sales tax would be $3.24
Now, we need to find tip amount
We will find 15% of 54

So, the tip given would be $8.1
The total cost of meal = Price of meal + Sales Tax + Tip
= 54+3.24+8.1
= 65.34
So, the total cost of meal is $65.34
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Answer and Step-by-step explanation:
The independent variable is m, and the dependent variable is h.
This is because you can plug in any value for m, making m NOT have to depend on any other value to become m.
With h, it needs the result of m and its other values to become the result of h. H relies/depends on the values in the equation to become a value.
#teamtrees #PAW (Plant And Water)
In a class of 6, there are 2 students who forgot their lunch.
If the teacher chooses 2 students, what is the probability that both of them forgot their lunch?
find the unknown sizes of angle in the following figures
Answer:
each missing angle is 120°
Step-by-step explanation:
What you have is a kite so the two missing angles are equal.
The sum of all four angles = 360°
2y = 360° - 88° - 32° = 240°
y = 120°
Urgent!Math help!!! What’s the real answers?
Answer: you got the two right, the third is incorrect and the fourth is correct
Step-by-step explanation: I took the quiz hope I pulled some weights off your shoulders
6 ft = ____ yd
6 ft = 6 x 1 ft
= 6 x ____ yd
= ____ yd
Answer:
6 ft = 2 yd
6 ft = 6 x 1 ft
= 6 x 2 yd
= 12 yd
a soccer team lost 30% of their games. If they played 20 games, how many did they win
Answer:
14
Step-by-step explanation:
100% - 30%= 70% (the times they've won)
0.7x20=14
Which is the graph of y=-x-3?
Either graph A or C, i'm leaning more towards A
A
Step-by-step explanation:
because slope is 3/4 and y-intecept is (0,-3)
Solve the system of equations x – 3y = 1 and 2x + 2y = 18 by combining the
equations.
plz help I need help on math plz help the first one get bainys its actually for my lis sis
here is my picture
Answer:
Step-by-step explanation:
1. $5
2. 50 cents
3. 25 cents
4. 3 dollars
5. 70 cents
just subtract them
There is a theory that children wearing superhero costumes are more likely to harm themselves because of the unrealistic impressions of invincibility that these costumes could create. Below there is data about the severity of injury (on a scale from 0, no injury, to 100, death) for children reporting to the emergency center at hospitals and information on which superhero costumes they were wearing (Spiderman, Superman, Batman).
Spiderman Superman Batman
55 68 26
31 32 47
58 85 30
20 69 35
47 58 53
37 52 43
Compute the following descriptive statistics for each group. (30 points total)
a. Mean
b. Sample size (n) for each group
c. Standard Deviation
d. Square root of n
e. Standard error of the mean (SEM)
Answer:
[tex]Mean = 47[/tex]
[tex]n = 6[/tex]
[tex]s= 16.56[/tex]
[tex]\sqrt n = 2.45[/tex]
[tex]SEM = 11.55[/tex]
Step-by-step explanation:
Given: The above data
Solving (a): Mean of each group
Mean is calculated as:
[tex]Mean = \frac{\sum x}{N}[/tex]
[tex]Mean = \frac{55 + 31 + 58 + 20 + 47 + 37+68 + 32 + 85 + 69 +58 + 52+26 + 47 + 30 +35 + 53 + 43}{18}[/tex]
[tex]Mean = \frac{846}{18}[/tex]
[tex]Mean = 47[/tex]
Solving (b): The sample size of each group
This is the number of rows in each group.
Hence:
[tex]n = 6[/tex]
Solving (c): Standard deviation (s)
This is calculated as:
[tex]s = \sqrt{\frac{\sum (x - \bar x)^2}{N}}[/tex]
So, we have:
[tex]s= \sqrt{\frac{(55 - 47)^2 + (31 - 47)^2 +......... + (43 - 47)^2}{18}}[/tex]
[tex]s= \sqrt{\frac{4936}{18}}[/tex]
[tex]s= \sqrt{274.22}[/tex]
[tex]s= 16.56[/tex]
Solving (d): Square root of n
[tex]\sqrt n = \sqrt 6[/tex]
[tex]\sqrt n = 2.45[/tex]
Solving (e): SEM
This is calculated as:
[tex]SEM = \frac{s}{\sqrt N}[/tex]
[tex]SEM = \frac{47}{\sqrt{16.56}}[/tex]
[tex]SEM = \frac{47}{4.07}[/tex]
[tex]SEM = 11.55[/tex]
What should you check if the
experiment does not led
Answer:
D: the wiring and the other
Step-by-step explanation:
Answer:
The liquid and the medal
Step-by-step explanation: "So the electrons start to move from one metal to the other through the liquid. This creates current" This is why i would check the liquid and the medal. if the experiemnt doesnt work then there must be something wrong with the current
HELP ME I BEG OF YOU!!!!
Which inequality is represented by this graph?
A. Negative 34.5 greater-than x
B. Negative 34.5 less-than x
C. Negative 35.5 greater-than x
D. Negative 35.5 less-than x
Answer:
B) -34.5 < x
---
Hope this helps!
Answer:
The correct answer is A
Step-by-step explanation:
Chapman wants to buy a pair of AirPods however he currently has only 20 he then decides to begin saving his monthly allowance until he has enough for his purchase. After two months, he has saved a total of $66, including his initial $20. Select the linear equation that models S, The total amount of money he will have saved, X months after he begins saving his allowance
Answer:
C
Step-by-step explanation:
i think its c but i cant be to sure im only in the 7th grade :) i hope its right
the ratio of the angle measures of a pentagon is 4:5:3:8:7. what is the measure of the smallest angle. help pleasee
Answer:
geometry
The ratio of the angle measures of a pentagon is 4:5:3:8:7. What is the measure of the smallest
The sum of the interior angles of a pentagon is 180(5-2) = 540º
so
4x + 5x + 3x + 8x + 7x = 540
solve for x and sub into 3x
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
A(n) = 1 + (n – 1)(–5.7)
Answer is in the photo. I can only upload it to a file hosting service. link below!
tinyurl.com/wpazsebu
1. Two walls of a room or being painted each measure 16 6/2' how many square feet will be painted
2. A rectangular canvas covers 225 inches on a wall if the canvas has a height of 18 inches then what is the base
Answer:
3.167 ft²
12.5 inches
Step-by-step explanation:
1.)
Measure of each wall : 16 6/2 '
Number of walls = 2
Total area to be painted :
16 6/2' * 2 = (16 + 3) * 2 = 19 * 2 = 38 inches
1 feet = 12 inches
x = 38 inches
12x = 38
x = 38 / 12 = 3.167 ft²
2.)
Area of rectangular canvas = 225
Height = 18
Base, b =?
Area of rectangle = height * base
225 = 18 * b
225 / 18 = 18b / 18
12.5 = b
Base = 12.5 inches
In a right triangle, the hypotenuse has endpoints P(-3, 2) and Q(1, -3).
Answer:
the remaining points either be (-3,-3) or (1,2)
What is the slope and y-intercept of the function
f(x) = - 7 + 3x
A. m= 1/3 b= 7
B. m= -3 b= -7
C. m=3 b =-7
D. m= -1/3 b= 7 7
Answer: the answer is C. M= 3 and B= -7
the slope is always with the (x) and the b is by itself
An electronic device factory is studying the length of life of the electronic components they produced. The manager selects two assembly lines and takes all samples on those two lines. He got a sample of 500 electronic components and records the length of life in the life test. A histogram indicates that the lifespans have moderate right skew. From the sample he found the average length of life was 200,000 hours and that the standard deviation was 1,000 hours. He wants to find the confidence interval for the average length of life of the electronic components they produced. Based on the information, what advice will you give to him
Answer:
The confidence interval will be given by:
[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.
For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In the context of this problems:
It means that the sampling distributions of the sample mean of 500 components will be approximated normal, with mean 200,000 and standard deviation [tex]s = \frac{1000}{\sqrt{500}} = 44.72[/tex]
To build the confidence interval:
The confidence interval for the average length of life of the electronic components they produced will be given by:
[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.
For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]
Write the equation of the line in fully simplified slope intercept form
Answer: right of the picture
Step-by-step explanation: