Answer:
-1/3 I think
Step-by-step explanation:
use the slope formula
a sample of 58 items is selected. The mean of the sample is determined to be 36. The associated number of degrees of freedom for reading the t value is:
This question is incomplete, the complete question is;
In order to determine an interval for the mean of a population with unknown standard deviation, a sample of 58 items is selected. The mean of the sample is determined to be 36. The associated number of degrees of freedom for reading the t value is :
a. 35.
b. 57.
c. 36.
d. 58.
Answer: Option b. 57 is the correct answer.
Step-by-step explanation:
Given that;
sample size n = 58
sample mean x" = 36
degrees of freedom for reading the t value is = ?
we know that;
Degree of freedom df = n - 1
where n is the sample size
so we substitute
Degree of freedom df = 58 - 1
Degree of freedom df = 57
Therefore Option b. 57 is the correct answer.
Simplify and answer the boxes.
Answer:
[tex]\huge\boxed{\dfrac{x^2+9^2}{x-3y}+\dfrac{6xy}{3y-x}=x-3y}[/tex]
Step-by-step explanation:
Domain:
[tex]x-3y\neq0\Rightarrow x\neq3y[/tex]
[tex]\dfrac{x^2+9y^2}{x-3y}+\dfrac{6xy}{3y-x}=\dfrac{x^2+9y^2}{x-3y}+\dfrac{6xy}{-(x-3y)}\\\\=\dfrac{x^2+9y^2}{x-3y}-\dfrac{6xy}{x-3y}=\dfrac{x^2+9y^2-6xy}{x-3y}\\\\=\dfrac{x^2-2(x)(3y)+(3y)^2}{3y-x}=\dfrac{(x-3y)^2}{3y-x}\\\\=\dfrac{\bigg[-1(3y-x)\bigg]^2}{3y-x}=\dfrac{(-1)^2(3y-x)^2}{3y-x}\\\\=\dfrac{1(x-3y)(x-3y)}{x-3y}=x-3y[/tex]
Used:
The distributive property: a(b + c) = ab + ac
(a - b)² = a² - 2ab + b²
10 POINTS
MIDDLE SCHOOL 8TH GRADE MATH
Need some help with this question can anyone please give me the answer?
WILL MARK BRAINLIEST!!!
The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2 tons. What is the average rate of change in steel production over the eight days? Express the answer in tons per day.
A. +1.2
B. -1.2
C. +0.15
D. -0.15
Answer:
option D.
Step-by-step explanation:
average rate of change in steel production over the eight days=-0.15 tons per day
Step-by-step explanation:
The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2 tons.
Production is dropped by 1.2 tons, so its negative
Average rate of change = Change in production / number of days
Average rate of change = -1.2/ 8= -0.15
so sorry -0.15
Graph a right triangle with the two points forming the hypotenuse. Using the sides,
find the distance between the two points, to the nearest tenth (if necessary).
(4, 6) and (7,8)
Answer: 0.67 unit
Step-by-step explanation:
Points are,
( 4 , 6 ) & ( 7 , 8 )
Distance= ( 8 - 6 )/( 7 - 4 ) = 0.67 unit
which of the following is equivalent to the radical expression below when x > 0?
Answer:
c Sorry am not sure
Step-by-step explanation:
Sumbody kome in clutch for me
(-17)(-6)
A -23
B 102
C -102
D 2.8
Answer:
haha you are not going anywhere else to say it
a car travaling 9/10 of miles per minute will travel how many miles in 10 minutes
-¼ ( x + 2) + 5 = - x
( this is a multi-step equation)
The value of x after simplfication of equation -¼ ( x + 2) + 5 = - x is -6.
Consider the equation,
( - 1 / 4 ) × ( x + 2 ) + 5 = - x
Now,
( - x / 4 ) + ( - 2 / 4 ) + 5 = - x
( - x / 4 ) - ( 1 / 2 ) + 5 = - x
Now, LCM of 2 and 1 is 2.
Therefore,
( - x / 4 ) + [ ( 10 - 1 ) / 2 ] = - x
( - x / 4 ) + ( 9 / 2 ) = - x
Adding x on both sides of the equation.
( - x / 4 ) + x + ( 9 / 2 ) = - x + x
Subtracting ( 9 / 2 ) from each side of the equation,
( - x / 4 ) + x + ( 9 / 2 ) - ( 9 / 2 ) = ( - 9 / 2)
( - x / 4 ) + x = ( - 9 / 2 )
LCM of 4 and 1 is 4
[ ( - x + 4x ) / 4 ] = ( - 9 / 2 )
( 3x / 4 ) = ( - 9 / 2 )
By cross multiplying,
2 × 3x = - 9 × 4
6x = - 36
Dividing each side of the equation by 6.
( 6x / 6 ) = ( - 36 / 6 )
x = - 6
Learn more about equation here:
https://brainly.com/question/2972832
#SPJ9
!!!HELP ME HELP PLSSSSSSS!!!!!!!!!!
What is the measure of angle x?
Answer:
65
Step-by-step explanation:
Im to lazy to do the math
Whats the output value for y= 3x+5
1.the output value is x or y ?
the output would be y because it is by itself on the left side of the equation symbol.
is 462 ft above sea level positive integer, or zero, or negative integer ?
Answer:
Positive Integer
Step-by-step explanation:
An integer is a whole number.
462 is an integer and is positive.
Answer: positive integer
Step-by-step explanation:
Kinda obvious
1.) x + 2x =
Could you help me solve this
Answer:
3x
Step-by-step explanation:
we don't know the value of x and we know we have 3 x's so we just add them together. But if we didn't know what ask for as we would just times that by 3
How do you solve this problem-3<=-2x+5<1
Answer:
-1
Step-by-step explanation:
PLEASE ANSWER FAST I GIVE BRAINLIEST
Movie a costs 4 dollars
Movie b costs 5 dollars
Movie theater got 200 dollars and sold 47 tickets
How many tickets did movie a sell
Answer:
ticket for movie A = 35
ticket for movie B = 12
Step-by-step explanation:
Let A= is ticket for movie A
Let A= is ticket for movie B
We have A + B = 47 (1)
4A + 5B = 200 (2)
From (1) multiply 5 in both side 5A + 5B = 47(5)= 235
4A + 5B = 200
So A = 35
B= 47-35 = 12
I hope that help..
people really be asking for entire essays on here.....
Answer:
well they're just copy pasting the questions from their essay response homework so...
Step-by-step explanation:
Given points open parentheses minus 2 comma space 3 close parentheses and Syntax error. which expression can be used to find the distance between the two points?
Answer:
well, i think that it's l-2l + l9l
Step-by-step explanation:
hope its right:)
Find an expression which represents the sum of (10x - 4y) and (4x -8y) in simplest terms.
Answer:
14x - 12y
Step-by-step explanation:
Let's write the sum:
(10x - 4y) + (4x -8y)
Because we're only doing addition and subtractaction, we can drop the parentheses that aren't preceded by a minus sign, they don't change the order.
10x - 4y + 4x - 8y
as long as we don't change the sign preceding each component, we can reorder as we wish
10x + 4x - 4y - 8y
(10x + 4x) - (4y + 8y)
note that because we added a parenthesis preceded by a - the sign inside changed.
We perform additions inside of the parentheses:
10x + 4x = 14x
4y + 8y = 12y
and we arrive at the final result:
14x - 12y
Which equations would you use the subtraction property of equality to solve?
Check all that apply.
O 5y=20
O76=d+4
Ox-3=17
Ob-13=26
Oh+2=54
Dz+9=2
Find the area of a circle whose radius is
52 km. Round to nearest tenth
Answer:
8494.87 is the actual answer but the rounded version is 8494.9
Step-by-step explanation:
3.142×52^2=8494.866535
8494.9 nearest tenth
Jason can travel 24 3/4 miles in 1/4 hour. What is his average speed in miles per hour?
Answer:
the answer is 99
Step-by-step explanation:
simply multiple 24 3/4 by 4
Answer:
99 miles per hour
Step-by-step explanation:
(24 3/4) / (1/4) =
99/4 x 4/1 =
396/4 = 99
suppose sin(x) = -3/5 and cos(x) < 0. what is the value of cos (2x)?
Answer:
7/25
Step-by-step explanation:
Answer is C
Please help me please
Answer:
Q1. [tex](-\frac{3}{2},0)[/tex]
Q2. (-16, 0)
Step-by-step explanation:
The midpoint of a line segment is given by the formula:
[tex]\boxed{\text{Midpoint}=(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )}[/tex]
In the formula, [tex](x_1,y_1)[/tex] is the first endpoint while [tex](x_2,y_2)[/tex] is the second endpoint of the line segment.
__________
Q1. Substitute the given endpoints into the formula:
Midpoint
[tex]=(\frac{-5+2}{2} ,\frac{5-5}{2} )[/tex]
[tex]=(\frac{-3}{2} ,\frac{0}{2} )[/tex]
[tex]= \bf{(-\frac{3}{2} ,0)}[/tex]
__________
Q2. Let the other endpoint be (x, y).
Substitute the given midpoint and one endpoint:
(-6, 4)=[tex](\frac{x+4}{2} ,\frac{y+8}{2} )[/tex]
Comparing the x-coordinate:
[tex]\frac{x+4}{2} =-6[/tex]
Multiply both sides by 2:
x +4= -12
Subtract 4 from both sides:
x= -12 -4
x= -16
Comparing the y-coordinate:
[tex]\frac{y+8}{2} =4[/tex]
Multiply both sides by 2:
y +8= 8
Subtract 8 on both sides:
y= 8 -8
y= 0
The coordinates of the other endpoint is thus (-16, 0).
__________
For more questions on midpoint, check out: https://brainly.com/question/17247547
Step-by-step explanation:
your own work, please ...
my own work is
1.
the midpoint between 2 points (x1, y1) and (x2, y2) is
((x1 + x2)/2, (y1 + y2)/2)
so, our midpoint is
((-5 + 2)/2, (5 + -5)/2) = (-3/2, 0/2) = (-3/2, 0)
2.
we have
((x1 + 4)/2, (y1 + 8)/2) = (-6, 4)
so,
(x1 + 4)/2 = -6
x1 + 4 = -12
x1 = -16
(y1 + 8)/2 = 4
y1 + 8 = 8
y1 = 0
so, the other endpoint is (-16, 0).
Rewrite the formula to solve for the positive value of r in terms of h and v.
Answer:
[tex]r=\sqrt{\dfrac{3V}{\pi h}}[/tex]
Step-by-step explanation:
The formula for the volume of a cone is given by :
[tex]V=\dfrac{1}{3}\pi r^2 h[/tex]
Where
r is radius of cone and h is its height
We need to solve the above formula for r.
Cross multiplying both sides of the given formula
[tex]3V=\pi r^ 2h[/tex]
Dividing both sides by πh.
[tex]\dfrac{3V}{\pi h}=\dfrac{\pi r^2 h}{\pi h}\\\\r^2=\dfrac{3V}{\pi h}\\\\r=\sqrt{\dfrac{3V}{\pi h}}[/tex]
So, the formula for r is [tex]\sqrt{\dfrac{3V}{\pi h}}[/tex]
Pecan Theatre Inc. owns and operates movie theaters throughout Florida and Georgia. Pecan Theatre has declared the following annual
dividends over a six-year period: Year 1, $16,000; Year 2, $32,000; Year 3, $116,000; Year 4, $126,000; Year 5, $138,000; and Year 6,
$152,000.
During the entire period ended December 31 of each year, the outstanding stock of the company was composed of 20,000 shares of cumulative
preferred 2% stock, $100 par, and 100,000 shares of common stock, $15 par.
Required:
1. Determine the total dividends and the per-share dividends declared on each class of stock for each of the six years. There were no dividends
in arrears at the beginning of Year 1. Summarize the data in tabular form.
Note: If required, round your answers to two decimal places. If the amount is zero, enter "0".
Preferred Dividends
Common Dividends
Total
Dividends
Year
Total
Per Share
Total
Per Share
Year 1
$ 16,000
16,000
0.80
0
0
Year 2
32,000
32,000
1.60
0
0
Year 3
116,000
Year 4
126,000
Year 5
138,000
Year 6
152,000
which expression represnts the product of 2xy and 3xy+5y-xy^2
Answer:
You distribute the 2xy and get
2xy(3xy + 5y - xy^2) = 6(x^2)(y^2) + 10xy^2 - 2(x^2)(y^3)
Simplify each expression.
(3m^1/2•27n^1/4)^4
Answer:
43046721/4096
m4n4
Step-by-step explanation:
F
I
7
+
F
T
т
I'
T
T
dows (bd badyan (bred) (badjabrudny (band) (b-ndaband bad bad bvd/ 6
-79
What is absolute value and why is it always positive?
Answer:
Step-by-step explanation:
An absolute value is the distance a number is from 0 on the number line. So, regardless if it is a negative or a positive number, the distance from that number to 0 will always be positive. For example, -5 is 5 units away from 0, and 5 is also 5 units from zero. They have the same absolute value, even though one is negative and the other is positive.
Answer:
You can describe absolute value as a number's (Negative or positive) distance from zero.
Step-by-step explanation:
Say you have 4 and -4. 4's absolute value is four because it is four number units away from zero. -4 is a negative number but its absolute value would still be positive four because it is still four number units away from zero even though those number units are negative.