Answer:
central tendency is the tendency for the values of a random variable 2 cluster round it's mean,mode amdedian
Step-by-step explanation:
it's also called center/location of the distribution
Select ALL the correct answers.
Consider the following quadratic equation.
y=x²-8x+4
Which of the following statements about the equation are true?
When y = 0, the solutions of the equation are x=8±2√2.
The extreme value of the graph is at (8,-4).
When y = 0, the solutions of the equation are x=4±2√3.
The extreme value of the graph is at (4,-12).
The graph of the equation has a minimum.
The graph of the equation has a maximum.
Answer:
Statements 3, 4 and 5 are true.
Step-by-step explanation:
x^2 - 8x + 4
Using the quadratic formula:
x = [ -(-8) +/- √((-8)^2 - 4*1*4)] / 2
= (8 +/- √(64 - 16)) / 2
= 4 +/- √48 / 2
= 4 +/- 4√3/2
= 4 +/- 2√3.
So the third statement is true.
Converting to vertex form:
x^2 - 8x + 4
= (x - 4)^2 - 16 + 4
= (x - 4)^2 -12
So the extreme value is at (4, -12)
So the fourth statement is true.
The coefficient of the term in x^2 is 1 (positive) so the graph has a minimum.
[tex] {75}^{2} + 25 - 750[/tex]
Sophie has to choose seven different positive (non zero) whole numbers whose mean is 7.
What is the largest possible number that she could choose as one of the seven numbers?
The largest possible number that she could choose as one of the seven numbers is _ _ because
Answer:
The largest possible number is 28.
Step-by-step explanation:
Sophie has to choose seven different numbers whose mean is 7, this means that the sum of the numbers is 49. (since the mean is the sum of them all divided by 7 and if we want the mean to be 7, then the sum would need to be 49).
We are asked what is the largest possible number she could choose, so therefore, the other six numbers should be non-zero and the smallest ones so she would have to choose the numbers from 1 to 6 first.
Let's see how much they sum up: [tex]1+2+3+4+5+6=21[/tex]
So now, she needs one more number to sum up to 21 and that will give her 49 in total, this number is 28 (since 28 + 21 =49).
Thus, 28 is the largest number she could choose because if she chose any other greater number the mean would be bigger than 49.
13 POINTS!!!
In ΔJKL, j = 74 inches, k = 14 inches and l=67 inches. Find the measure of ∠L to the nearest degree.
Answer:
55°
Step-by-step explanation:
Using cosine law
67² = 74² + 14² - 2(74)(14)cos(L)
cos(L) = 169/396
L =55.18378419
The measure of angle L to the nearest degree is 55°.
What is Law of Cosines?Law of cosines of triangle states that for three length of sides of the triangle, a, b and c opposite to the angles A, B and C respectively can be related as,
a² = b² + c² - 2bc cos(A)
Given, for a triangle JKL,
j = 74 inches, k = 14 inches and l = 67 inches.
We can use law of cosines to find the measure of angle L.
Using the law of cosines,
l² = j² + k² - 2jk cos(L)
67² = 74² + 14² - (2×74×14) cos(L)
4489 = 5476 + 196 - 2072 cos(L)
4489 = 5672 - 2072 cos(L)
-1183 = - 2072 cos(L)
cos (L) = 0.5709
L = 55.18° ≈ 55°
Hence the measure of angle L is 55°.
Learn more about Law of Cosines here :
https://brainly.com/question/30766161
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A triangular pyramid has an equilateral triangle for the base with a base of 3m and a height of 2m. The height of the pyramid is 18 meters. The slant height is 3.5 m. What is the lateral area of the pyramid?
A.15.75 meters
B.162 meters
C.81 meters
D.31.5 meters
Answer:
B
Step-by-step explanation:
I did the problem beforeeeeeeeeeeeeeeeeeeeeeeeeeee
Which steps should be taken to solve the equation 2x+3=x+5. Check all that apply
Answer:
Remove 1 x tile and 3 unit tiles from each side
Step-by-step explanation:
technically you can do any of them, but I don't think that's what your teacher wants.
What are our “cheat words” for finding slope?
Answer: y-intercept
Step-by-step explanation:
if suresh made a deposit of AED 2700 on the first day of the tear and same amount again after every 4 months at the end of the year how much money will he get if the interest is compounded quarterly and the rate of interest is 7.5% per annum
Answer:
48.048
Step-by-step explanation:
multiply 77 time 0.60 since 60%in decimal form is 0.60. you then get the answer of that(46.2) and mutiply 0.04 since that the decimal form for 4%. you get 1.848 and add it to 46.2 and get the final answer 48.048. Hope this helped you
Y = 3x -1 Y = 2x + 3
Answer:
x = 4
y = 11
Step-by-step explanation:
You can make the equations 3x - 1 = 2x + 3
x = 4
y = 11
To rent a canoe costs $15 for the first hour and $12 for each additional hour or fraction of an hour. Which point is NOT included in the graph of this step function?
A. (2.5, 39)
B. (3.2, 51)
C. (3.0, 39)
D. (4.5, 51)
Answer:
A
Step-by-step explanation:
(2.5,39)
Answer:
(2.5, 39)
Person above me is correct. :)
Katie has a cube with an edge length of
3 inches. Malea has a cube whose volume is 8
times greater than the volume of Katie's cube.
What is the length of Malea's cube?
Answer:
3 x 8 = ____16____
Step-by-step explanation:
8+8+8= 16 or 3+3+3+3+3+3+3+3= 16
Hope this helps :)
Answer:
3 x 8 = ____16____
Step-by-step explanation:
8+8+8= 16 or 3+3+3+3+3+3+3+3= 16
Step-by-step explanation:
A company is designing a new cylindrical water bottle. The volume of the bottle will be 187 cmcubed. The height of the water bottle is 7.3 cm. What is the radius of the water bottle? Use 3.14 for pi.
Answer:
2.86cm
Step-by-step explanation:
Step 1:
Data obtained from the question. This includes the following:
Volume (V) = 187cm3
Height (h) = 7.3cm
Pi (π) = 3.14
Radius (r) =..?
Step 2:
Determination of the radius of the cylindrical water bottle.
The radius of the cylindrical water bottle can be obtained as follow:
V = πr^2h
187 = 3.14 x r^2 x 7.3
Divide both side by 3.14 x 7.3
r^2 = 187 / (3.14 x 7.3)
Take the square root of both side
r = √[187 / (3.14 x 7.3)]
r = 2.86cm
Therefore, the radius of the cylindrical water bottle is 2.86cm
Enter the division problem 15 ÷11 as a fraction.
Answer: 15/11
Step-by-step explanation:
Answer:
15 ÷ 11 as a fraction is 15/11. As a mixed number it is 1 4/11.
Step-by-step explanation:
Please help ASAP! I will mark Brainliest! Please answer CORRECTLY! No guessing!
Answer: A
Step-by-step explanation:
Answer:
I'm sorry what grade level is this
What is the degree of
6x^5 – 4x^2 + 2x^2 - 3 + x?
A. 3
B. 5
C. 6
D.2
Hello!
Answer:[tex]\boxed{ \bf The~degree~of~the~polynomial~is~B.~5}[/tex]
___________________________________________
Explanation:The term with the greatest exponent determines the degree of the polynomial.
Let's list all the terms:
[tex]6x^{5}[/tex]-4x²2x²-3xOut of all of these terms, the first one has the greatest exponent (5).
What is the Volume of the triangular prism, in cubic centimeters?
Answer: the answer is approximately 45.6
Step-by-step explanation:
Which point is located at (Negative 1, 1 and one-fourth)?
Answer:
(-1, 1 1/4) or (-1, 1.25)
Step-by-step explanation:
Answer:
Its A
Step-by-step explanation:
Plz, help me!!!
How many solutions does the system of equations have?
Answer:
1 solution: x = 1 and y = 4
Eduardo is filling containers with water to make lemonade. He filled 4 containers in 29 minutes, and each container holds 8.7 gallons. At what rate did Eduardo fill the containers?
Answer: 7.25 minutes per container.
Step-by-step explanation:
Your looking for a ratio of time per container. 29/4 is the given ratio it was simplified to 7.25/1. Or simply 29 divided my 4.
Factor the expression
36x + 27 using the GCF.
Answer:
9(4x+3) :)
Step-by-step explanation:
Answer:
Step-by-step explanation:
the first step in factorising is to look for any common factors.
27
and
36
are both multiples of
3
and
9
.
We use
9
because it is the highest common factor:
Divide
9
out of each term:
27+36x=9(3+4x)
The reverse process would be to use the distributive law to multiply each term in the bracket by
9
.
This will give us the original expression:
9(3+4x)=27+36x
Which is the same as diving a number by 10?
Answer:
Step-by-step explanation:
well i guess if the decimal is on the left you would move it to the right twice
because if you only moved it once it'd become 1.0
and if you moved it to the left once it would also become 1.0
and if you moved it twice to the left you would be left with .10
pls mark me brainliest
Is the percent increase for 50 to 70 = to the percent decrease from 70 to 50
Answer:
no it is not equal.
Step-by-step explanation:
when you calculate the percentages, you will find that the increase has 40% while the decrease has about 28.6%
Answer:
No. The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.
Step-by-step explanation:
SAMPLE RESOND
15 POINTS! will be selecting Brainliest!
How do I do this? Please give step-by-step answers + "work"- will be selecting Brainliest!
CAN SOMEONE PLEASE HELP ME
Find the sine of angle R. Reduce the answer to the lowest terms.
Find the cosine of angle R. Reduce the answer to the lowest terms.
Find the tangent of angle R. Reduce the answer to the lowest terms.
Find the sine of angle S. Reduce the answer to the lowest terms.
Find the cosine of angle S. Reduce the answer to the lowest terms.
Find the tangent of angle S. Reduce the answer to the lowest terms.
Answer:
Since sine is equal to opposite over hypotenuse, you would create the fraction 8/10. 8 and 10 are both divisible by 2, so that fraction would reduce to 4/5, which is the answer.
Step-by-step explanation:
hey can yall make me brainlyiest
Answer:
4/5 sine
Step-by-step explanation:
1) Find the volume of the triangular prism.
5 yd
5 yd
3 yd
6 yd
8 yd
27 yd
72 yd
240 yd
360 yd
Answer:
I am not completely sure but I believe that it is C) 240 yd^3
Step-by-step explanation:
please help! I will mark as branliest if you help
Answer:
B.180°
Step-by-step explanation:
The sum of supplementary angles are always equal to 180, as you can see, the angles form a half circle which is 360/2. Hope this helps :)
Answer:
180
Step-by-step explanation:
Supplementary angles sum to 180 degrees
Please answer this question
x^2 = 11x
[tex] {x}^{2} = 11x \\ {x}^{2} - 11x = 0 \\ x(x - 11) = 0[/tex]
Product is equal to 0 when one of multipliers is equal to 0, so
[tex]x = 0[/tex]
Or
[tex]x - 11 = 0 \\ x = 11[/tex]
Answer: x=0 or x=11
Answer:
Step-by-step explanation:
x^2 = 11x
x ( x − 11 ) = 0
x = 0 (by transposing)
x − 11 = 0
x=11 (by transposing)
therefore, x= 0,11
Hope it Helps...pls Mark as Brainliest!!
PLZ HELP WILL MARK BRAINLIEST!!!
The graph of a proportional relationship passes through (3, 24) and (1, y).
Find y
Answer:
8
Step-by-step explanation:
If it is proportional 3/3=1
And 24/3=8
Answer: go up the origin maybe that would help
Step-by-step explanation:
If the point (a,1) lies on the line y = 3x - 5, what is the value of a?
Answer:
a = 2
Step-by-step explanation:
Note that a point uses (x , y).
y = 1
x = a
Plug in 1 for y in the equation, and a for x:
y = 3x - 5
1 = 3a - 5
Isolate the variable, a. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
First add 5 to both sides:
1 (+5) = 3a - 5 (+5)
1 + 5 = 3a
6 = 3a
Next, divide 3 from both sides:
(6)/3 = (3a)/3
a = 6/3
a = 2
2 is your value for a.
~
The volume of a cylinder is 40 Feet cubed. Which expression represents the volume of a cone with the same base and height as the cylinder?
Answer:
40/3 feet³
Step-by-step explanation:
Volume of cylinder = 3 × volume of cone with same base and height
40 = 3 × Volume of cone
Volume of cone = 40/3 feet³
Answer:
I think da answer is C on edge
Step-by-step explanation: