The average number is 17.25. The variance is 14.24.
What are the mean and variance?Variance is the anticipated squared variation of a random variable from its population mean or sample mean in probability theory and statistics. Variance is a measure of dispersion, or how far apart from the mean a group of data is from one another.
Given that the tigers are randomly selected from the 31 tigers at your local zoo:
22, 13, 18, 16
Mean = ( 22 + 13 + 18 + 16 ) / 4
Mean = 17.25
Variance = ∑(x - xm ) / n - 1
Variance = [( 22 - 17.25)² + ( 13 - 17.25 )² + ( 18 - 17.25 )² + ( 16 - 17.25 )²] / 4 - 1
Variance = ( 18.06 + 0.5625 + 1.5625 +22.56) / 3
Variance = 14.24
Therefore, the average number is 17.25. The variance is 14.24.
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180% is equivalent to what decimal value
Answer:
1.80
Step-by-step explanation:
1%=0.01
10%=0.10
100%=1.00
The area of a rectangle is 36 square inches, and its perimeter is 26 inches. What are the length and width of the rectangle?
Answer:
9 and 4
Step-by-step explanation:
Let f() = -2-1 and g(x)=x2- 1.
Find (fogX-5)
Then (fog)(-5) =
(Simplify your answer)
Solve by using trial and error method. 3x = 16
Answer:
5.3...
..............
17. It takes one minute to fill (3/7) th of a vessel. What is the time taken in
minutes to fill the whole of the vessel?
Answer:
Given that 1minute =3/7of the vessel
let the time taken in minutes to fill the whole of the vessel be' x' minute.
1min =3/7
xmin =whole vessel =1=7/7
=3x/7=1=x=7/3=2.3min=2min.3sec
Bella the Chihuahua weighs 5 1/2 pounds. What is Bella's weight in Kilograms?
2) The perimeter of a rectangle is 74 cm. The length of the rectangle is 5 cm less
than twice the width. Find the length and width of the rectangle.
69 is the width 133 is the length
Step-by-step explanation:
im not that sure though lol
Factor this trinomial.
x2 - 9x+ 20
O A. (x – 4)(x - 5)
O B. (x-2)(x+10)
O C. (x - 2)(x - 10)
O D. (x – 4)(x + 5)
The factorization of the given trinomial [tex]x^2 - 9x+ 20[/tex] is (x – 4)(x - 5). The correct option is A.
What is trinomial?A trinomial is a polynomial that has three terms. To factor a trinomial of the form [tex]ax^2 + bx + c[/tex], you need to find two binomials that multiply together to produce the original trinomial.
To factor the trinomial [tex]x^2 - 9x + 20[/tex], we need to find two numbers that multiply to 20 and add up to -9. These two numbers are -4 and -5. Therefore, we can write:
[tex]x^2 - 9x + 20 = (x - 4)(x - 5)[/tex]
Or, To factor [tex]x^2 - 9x + 20[/tex], you need to find two numbers that multiply to 20 and add up to -9. These numbers are -4 and -5 because -4*(-5) = 20 and -4 + (-5) = -9.
You can factor the trinomial as (x - 4)(x - 5).
Thus, the correct option is A.
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Identify the pair of angles as complementary, supplementary, or neither.
PLEASE HELP
Answer:
supplementary
Step-by-step explanation:
135 + 45 = 180
supplementary angle ALWAYS add up to 180.
which of these equations could represent the blue line?
Answer:
y = 1/2x
Step-by-step explanation:
The x seems to double the size of the y on the points.
Suppose you deposit $2,000 in a savings account that pays interest at an annual rate of 4%.
Graph the line with slope 3 passing through the point (5,-4).
Answer:
y = 3x-16
Step-by-step explanation:
two points where the line goes through is (5,-4) as mentioned and (0,-16)
A student read the first 150 pages of a book that is 450 pages long.
What fraction of the book does the student have left
Answer:
1/3
Step-by-step explanation:
the book is 450 pages long
the student read 150 pages
so he read 150/450=1/3
Answer:
2/3
Step-by-step explanation:
150x3=450
so 2 thirds
Math Question,please help
Answer:
8
Step-by-step explanation:
2y = 3x + 4
2x = -3y - 7
Answer:
x= -2.........&.........y= -1
Step-by-step explanation:
(x,y)=(-2,-1)
Can you guys find the slope and y-intercept
Answer:
Step-by-step explanation:
Plot any tow points on the line and find the slope
(-1 , 3) ; ( -2 , 1)
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]= \frac{1-3}{-2-[-1]}\\\\= \frac{-2}{-2+1}\\\\=\frac{-2}{-1}\\\\=2[/tex]
m = 2 ; (-1 , 3)
y - y1 = m(x - x1)
y - 3 = 2*(x - [-1])
y - 3 = 2*(x + 1)
y -3 = 2*x + 2*1
y -3 = 2x + 2
y = 2x + 2 + 3
y = 2x + 5
Slope = 2
y-intercept = 5
. Jamie is walking of a mile every
hour. At that rate, how far will
Jamie have walked in one hour?
Answer:
a mile
Step-by-step explanation:
he walked 1 mile an hour
hope this helped
Answer:
Jamis would have walked 1 mile in one hour
Step-by-step explanation:
since Jamie walks a mile every hour, at that rate he would have walked 1 mile in one hour as given above.
I hope this helped! :)
☁️☁️☁️☁️
Felix divided his shirts into three equal groups. Evaluate when s = 18.
Answer:
3 and 6.
Step-by-step explanation:
Write and evaluate the expression. Then, check all that apply.
Felix divided his shirts into three equal groups. Evaluate when s = 18.
The expression is
The expression is
The expression is s/3
The expression is
The answer is
The answer is 6.
I'll mark as brainliest!
Please help!
Answer: See explanation
Step-by-step explanation:
1. Decimal fraction: ¹⁵⁷/₁₀₀
Fraction: ¹⁵⁷/₁₀₀ or 1 ⁵⁷/₁₀₀
2. Decimal Fraction: ³¹²/₁₀₀
Fraction: ⁷⁸/₂₅ or 3³/₂₅
3. Decimal Fraction: ⁶³⁰/₁₀₀
Fraction: ⁶³/₁₀ or 6³/₁₀
4. Decimal Fraction: ¹¹⁰/₁₀
Fraction: ¹¹/₁
5. Decimal Fraction: ¹¹²/₁₀
Fraction: ⁵⁶/₅ or 11¹/₅
Find the 59th term of the arithmetic sequence 26, 17, 8, ...26,17,8,...
Answer: the 59th term is -496.
Step-by-step explanation:
helppppppppp!!! need work
Answer:
d. y = 3x + 5
Step-by-step explanation:
plug x = 2 in the equation y = 3x +5
y = 3*2 + 5
y = 11
so x = 2, y = 11
we know d is the correct statement
Answer:
your question and is d option
What is the answer to 2x+3=7?
Answer:
x = 2
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Define
2x + 3 = 7
Step 2: Solve for x
[Subtraction Property of Equality] Subtract 3 on both sides: 2x = 4[Division Property of Equality] Divide 2 on both sides: x = 2if angle COD equals 134 degrees, what is the size of reflex angle COD?
A: 46 degrees
B: 226 degrees
C: 314 degrees
D: 494 degrees
Answer:
A.
Step-by-step explanation:
To get to 180. You need to subtract 134 from 180:
180
134-
Which would give you 46.
I hope this is right.
ANSWER:the size of reflex angle is
C:314 degrees
Marking brainliest
Please help
Answer:
D
Step-by-step explanation:
That's the answer.......
Answer:
D
Step-by-step explanation:
Let (12,-5) be a point on the terminal side of an angle 0. Find the values of sin e, cose, and tan
Answer:
Sin = -5/13
Cos = 12/13
Tan = -5/12
Step-by-step explanation:
Which family lives the farthest from Disneyland?
Family A:
Family D
y = 95 - 55
Distance
50
Family B:
40
Family B lives 120 miles from Disneyland
and drives 60 mph.
30
Family
20
Hours
Distance
from
Disneyland
SO
10
0
1.5
0
0.2 0.4 0.6 0.8
112 Time (hours)
Family A
O Family B
O Family C
Family D
If the area of a rectangle is 4.5 square cm and one side is 1.5 cm long. How long is the other side
Answer:
Step-by-step explanation:
1.5x = 4.5
x = 3 cm
I hope the answer in the above picture will helps you.
question:
-12 = 24 + 4b
Answer:
b = -9
Step-by-step explanation:
Answer:
-9
Step-by-step explanation:
-12 = 24 + 4b
-12 -24 = 4b
-36 / 4 = b
b = -9
por favor ayúdame, doy lo más inteligente,más inteligente ,Brainliest i give brainliest!
Answer:
The trapezoid's area formula is [tex]A = \frac{1}{2} (b_{1} + b_{2})h[/tex], the circle's area formula is [tex]A =[/tex]π[tex]r^{2}[/tex], the triangle's area formula is [tex]A = \frac{1}{2}bh[/tex], and the parallelogram's area formula is [tex]A = bh[/tex].
What is the slope of the line
Answer:
slope = 1
Step-by-step explanation:
(0 , 1) ; (-1 , 0)
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]=\frac{0-1}{-1-0}\\\\=\frac{-1}{-1}\\\\=1[/tex]