The percentage of students in school that attended the talent show for the years 2008 to 2013 are shown. This year, the school has a total of 400 students. How many students do you expect to attend the talent show this year? Explain how you found your answer.
PLEASE I NEED HELP ITS URGENT
Answers
Answer:
352 students
Step-by-step explanation:
Given
See attachment for table
[tex]n = 400[/tex]
Required
Attendance of students in this year's show
First, we calculate the mean of the table
[tex]Mean= \frac{\sum x}{n}[/tex]
So, we have:
[tex]Mean= \frac{85\% + 91\% + 92\% + 87\% +84\% + 89\%}{6}[/tex]
[tex]Mean= \frac{528\%}{6}[/tex]
[tex]Mean= 88\%}[/tex]
Multiply the mean by the total students
[tex]Expected = Mean * n[/tex]
[tex]Expected = 88\% * 400[/tex]
[tex]Expected = 352[/tex]
Answer:352
Step-by-step explanation:
You basically just find the mean
Related Questions
Binomial Coefficients (30pts) 1. Write (a + b)^2 as a polynomial in standard form. Show work (FOIL/distributive property).
Answers
Answer:
[tex]a^2 + 2ab + b^2[/tex]
Step-by-step explanation:
Given
[tex](a + b)^2[/tex]
Required
Express as a standard polynomial
We have:
[tex](a + b)^2[/tex]
Rewrite as:
[tex](a + b)(a + b)[/tex]
Open bracket
[tex]a^2 + ab + ab + b^2[/tex]
Add like terms
[tex]a^2 + 2ab + b^2[/tex]
I’m not 100% sure on this
Answers
Answer:
it's D I think
Step-by-step explanation:
..........
Answer:
D
Step-by-step explanation:
A line segment is a straight line that ends , the arrows mean the the ray or line dont end
What is the volume of this figure?
Answers
Answer:
1920
Step-by-step explanation:
I'm just doing it my way because it feels easier, but multiply 14 x 20 x 8 to get the volume of the entire figure.
Then we subtract that box of air which is 10 x 4 x 8.
So 14 x 20 = 280
280 x 8 = 2240
Then we find the volume of the missing part which is
10 x 4 = 40
40 x 8 = 320.
We get 2240 - 320 = 1920
Remember kids, wear your masks!
When Mayerlin goes bowling, her scores are normally distributed with a mean of 175 and a standard deviation of 13. Using the empirical rule, what percentage of the games that Mayerlin bowls does she score between 162 and 188?
Answers
Answer:
68%
Step-by-step explanation:
The Empirical rule formula is given as:
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
Where
μ is the population mean
σ is the population standard deviation.
Step 1
Find the number of standard deviations from the mean
μ - xσ and μ + xσ
μ = 175
σ = 13
For 162
175 - 13x = 162
175 - 162 = 13x
13 = 13x
x = 13/13
x = 1
For 188
175 + 13x = 188
13x = 188 - 175
13x = 13
x = 13/13
x = 1
Hence, the data falls with 1 standard deviation of the mean
Therefore, percentage of the games that Mayerlin bowls does she score between 162 and 188 is 68%
Answer:
The answer is 68%
Step-by-step explanation:
True or False?
When rainfall increases, the water level in the lake goes up. Rainfall is the independent variable in this situation. (4 points)
Answers
Answer:True
Step-by-step explanation: I did a quiz on it
Answer:
it is true am I right of this question
A triangular pyramid has lateral faces with bases of 8 meters and heights of 10
meters. The area of the base of the pyramid is 27.7 square meters.
What is the surface area of the pyramid?
The surface area of the pyramid is
square meters.
Answers
Answer:
147.7 m²
Step-by-step explanation:
Area of the triangular faces = 1/2 × base × height
A triangular pyramid has lateral faces with bases of 8 meters and heights of 10 meters.
Hence: 1/2 × 8 × 10 = 40 m²
A triangle has 3 faces, hence, area of the 3 faces = 3 × 40 m²
= 120m²
The area of the base of the pyramid is 27.7 square meters.
Hence, the surface area of the pyramid is calculated as:
Area of the 3 lateral faces of the pyramid + Base area
= 120m² + 27.7 m²
= 147.7 m²
The surface area of the pyramid is 147.7 square meters.
Which of the x-values are solutions to the following inequality?
x <100
Choose all answers that apply:
Answers
Answer:
x=54
x=89
Step-by-step explanation:
I think it is the answer
You estimate that your new business's revenue will grow at a compounded rate of 30% each month for the first 6 months. If your third month's revenue is estimated at $5,000, what is your second month's revenue? (Round to the nearest dollar.)
a) $2,945
b) $3,846
c) $4,012
d) $4,333
Answers
Answer:
b
Step-by-step explanation:
The formula for calculating future value:
FV = P (1 + r)^n
FV = Future value
P = Present value
R = interest rate
N = number of years
let a = second month's revenue
5000 = a(1.3)
a = 5000 / 1.3 = 3846
2 2 ⋅(45÷9) - 3 thx
Answers
Answer:
(45÷9) - 3
5-3
=2 is a required answer
hope it is helpful to you
What are the first three terms of the sequence defined by the recursive function an = an-1-(an-2-4), when a5 =-2 and a6 = 0?
-14, 14,- 4
6, 10,8
-2 0,2
2, 8, 10
Answers
Answer:
6, 10 and 8
Step-by-step explanation:
Given the recursive function an = an-1-(an-2 - 4), when a5 =-2 and a6 = 0?
a6 = a5 - (a4 - 4)
0 = -2 - (14 - 4)
2 = - (a4 - 4)
-2 = a4 - 4
a4 = -2 + 4
a4 = 2
a5 = a4 - (a3 - 4)
-2 = 2 - (a3 - 4)
-2-2 = - (a3 - 4)
-4 = -(a3 - 4)
4 = a3 - 4
a3 = 4+4
a3 = 8
Also
a4 = a3 - (a2 - 4)
2 = 8 - (a2 - 4)
2-8 = - (a2 - 4)
-6 = -(a2 - 4)
6 = a2 - 4
a2 = 6+4
a2 = 10
a3 = a2 - (a1 - 4)
8 = 10 - (a1 - 4)
8-10 = - (a1 - 4)
-2 = -(a1 - 4)
2 = a1 - 4
a1 = 2+4
a1 = 6
Hence the first 3 terms are 6, 10 and 8
Answer:
C. 6, 10, 8
Step-by-step explanation:
i took the test
Math question!!!!!!!!!!!!!
Answers
Answer:
the correct answer for that would be identity property
Answer:
first one
Step-by-step explanation:
Gabrielle's age is three times Mikhail's age. The sum of their ages is 80. What is Mikhail's age?
Answers
Answer:
Mikhail is 20 years old
Step-by-step explanation:
80 = Mikhail + Gabrielle
Gabrielle is 60 years old
Mikhail is 20 years old
20 * 3 = 60
20 + 60 = 80
Can someone help me with this problem please thank youu how do you do it ?
Answers
Answer:
A) x = 6 y = 6√3
Step-by-step explanation:
30-60-90 Triangle rule states that the hypothesis is 2x, the short leg is x, and the long leg is x√3. So, the short leg is 12/2 = 6, and the long leg is 6√3.
Can someone help me plzz!! no links tho
Answers
Answer:
A
Step-by-step explanation:
Events A and B are independent. Find the missing probability.
A.9/20
B.3/4
C.1/2
D.3/40
Answers
Answer:
B
Step-by-step explanation:
Question 1 of 10
Solve the proportion below.
-X/45=7/9
x=
O A. 5
B. 39
C. 35
O D. 43
Answers
B. 35
Explaining:
-X/45 = 7/9
7/9= 0.777777777777778
-X/45 = 0.777777777777778
45 x 0.777777777777778 = 35
-X = 35
Find the area and circumference of the circle.
B
4. Area =
5. Circumference
Answers
Answer:
Area: 200.96
Circumference: 50.24
Step-by-step explanation:
We know r (radius)=8
A=πr^2
A=π8^2
A=64π or 200.96
C=2πr
C=2π(8)
C=16π or 50.24
!!!!NEED HELP ASAP!!!! NO LINKS OR REPORT
Answers
Answer:
Step-by-step explanation:
Infinitely many solutions means that one side of the equals sign is exactly the same as the other side. We can achieve that easily by multiplying through the parenthesis and then combining like terms.
2(6x + 4) - 5x is 12x + 8 - 5x which simplifies down to 7x + 8. That is what goes on the right side of your equation.
A newborn baby weighs 3.136 times 10 Superscript 3 units. Which unit of measure was used?
Answers
Answer:
grams
Step-by-step explanation:
3.136 x 10³ = 3,136
3136 grams is approximately 7 pounds
there are about 28.3 grams in 1 ounce which means
28.3(16) or 452.8 grams per pound
3136 / 453 ≈ 7
plz help me plz plz plz plz plz
Answers
Answer:
38
Step-by-step explanation:
The area of a kite is equal to half the product of the diagonals
To find the area we must first find the measures of the diagonals
short diagonal = 2 + 2 = 4
longer diagonal = 8 + 11 = 19
We then calculate the area by multiplying the two diagonals together and then dividing that by 2
A = 19 * 4 = 76
76 / 2 = 38
Hence, the area of the kite is 38m²
38m².
Answer:
Solution given;
diagonal 1=8+11=19m
diagonal 2=2+2=4m
the area of a kite =½*diagonal 1*diagonal 2
=½*4*19=38m²
The area of kite is 38m².
11. What is the volume of the composite solid? (Hint: The height of the cone is 42 ft.)
12. A cylindrical can of cat food has a diameter of 3.5 inches and a height of 1.25 inches. A second brand of
cat food is packaged in a cylindrical can with a radius of 1.2 inches and a height of 1.25 inches.
a) What is the volume of the first can of cat food? Show your work
b) What is the volume of the second brand of cat food? Show your work
c) What is the difference between the volumes of the cans?
Extra credit: Two cylinders have equal diameters. Are their volumes also equal? Is the same true for cones and
spheres? Explain your reasoning
Answers
Answer:
c
Step-by-step explanation:
Differentiate 2x-4x^4
Answers
Answer:
2-16x^3
Step-by-step explanation:
A transformation is a of a figure to the or
Answers
Answer: change, position, shape
Step-by-step explanation:
- A school is using 12 passenger vans to transport
students on a field trip. Write an expression
represent the number of vans needed for (s)
students
Answers
Answer: s/12 = v
Step-by-step explanation:
Decide if each sentence uses assonance or consonance. Then, drag each answer to the correct box.
Answers
Answer:
Assonance, Assonance, Consonance, Assonance - Last box can be seen as consonance because of -ea repetition but there is a constant repetition of the vowel -e.
Step-by-step explanation:
Answer:
The foam rolls across the lonely ocean. : Consonance
I can't forget the letter that you sent last night: Consonance
In the hills, we stroll until nightfall, when the bells ring from the town hall. : Assonance
I went east, where the green beach trees lean against each other. : Assonance
Step-by-step explanation:
Hope this helps :D
If 40% of x + 20% of x + 1/10 = 75% of x, then find the value of x. Please give answers with steps
Answers
Answer:
x = 13/12
Step-by-step explanation:
explain on image
Please help! Free 100 points because why not lol
Answers
Answer:
Hello there :)
to find your cordinates simply set everything according to 0 and solve the equation with -b +- square rooted by b ac over b (im sorry i forgot what this equation is called). using +, that is your x point, and solving for - that is your y point.
Step-by-step explanation:
Hope this helps you!
Have a terrific week :)
Answer: Thanks!!
Step-by-step explanation:
Which linear function has a y-intercept of -5?
2x+y=-10
x-y=-5
x-3y=15
-x+4y=20
Answers
Answer:
It could be =15 or =0
Step-by-step explanation:Multiplying each side of −3x+4y=20
by 2 gives −6x+8y=40
. Adding each side of −6x + 8y = 40 to the corresponding side of 6x+3y=15
gives 11y=55,ory=5
. Finally, substituting 5 for y in 6x+3y=15
gives 6x+3(5)=15,orx=0
.
Answer:
x-3y=15 has a y-intercept of -5
Step-by-step explanation:
A y-intercept occurs when x = 0. So, when x = 0, which function has a y-value of -5?
Plug in 0 for all the values of x and solve for y.
1. 2(0)+y=-10; y=-10
2. (0)-y=-5; y = 5
3. (0)-3y=15; y = -5
4. -(0)+4y=20; y= 5
w(x) = −3x− 4; Find w(7)
Answers
good luck :)))))
-3(7)-4
-21-4
-25
!!I WILL GIVE BRAINLIEST!!
A circle is represented by the equation below
(x+2)^2 + (y - 4)^2= 225
Which statement is true?
The circle is centered at (-2,4) and has a radius of 15.
The circle is centered at (2,-4) and has a diameter of 15.
The circle is centered at (2,-4) and has a radius of 15.
The circle is centered at (-2,4) and has a diameter of 15.
Answers
The circle is centered at (−2, 4) and has a radius of 15.
i took the test
A circle represented by the equation (x+2)² + (y - 4)²= 225 is centred at (-2,4) and has a radius of 15.
The equation of a circle is represented as follows:
Equation of a circle;(x-h)² + (y-k)² = r²where
(h, k) = centre
r = radius
Therefore, (x+2)² + (y - 4)²= 225 has the following centre and radius.
(x+2)² + (y - 4)²= 15²Then
(h, k) = (-2, 4)
Therefore, the circle is centred at (-2,4) and has a radius of 15
learn more on circle here: https://brainly.com/question/2416003?referrer=searchResults