[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{4}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{4}-\stackrel{y1}{2}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{1}}}\implies \cfrac{2}{4}\implies \cfrac{1}{2}[/tex]
Sabine records the daily heights of a random sample of bamboo stalks, in inches. They are: 20, 19, 17, 16, 18, 15, 20, 21 Consider the formulas: A: s squared = StartFraction (x 1 minus x overbar) squared (x 2 minus x overbar) squared ellipsis (x n minus x overbar) squared Over n minus 1. B: s = StartRoot StartFraction (x 1 minus x overbar) squared (x 2 minus x overbar) squared ellipsis (x n minus x overbar) squared Over n minus 1 EndFraction EndRoot. C: Sigma squared = StartFraction (x 1 minus mu) Squared (x 2 minus mu) squared ellipsis (x N minus mu) squared Over N EndFraction. D: Sigma = StartRoot StartFraction (x 1 minus mu) Squared (x 2 minus mu) squared ellipsis (x N minus mu) squared Over N EndFraction EndRoot Which formula should you use for variance? Which formula should you use for standard deviation?.
The formula Sabine should use for calculating the variance and standard deviation for the random sample of bamboo stalks are,
[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]
[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]
What is variance and standard deviation?The variance of the data is the measure of average level by which every point is differed from the mean.
It can be calculated as,
[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]
The standard deviation of the data is the half of the difference of the highest value and mean of the data set.
It can be calculated as,
[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]
Sabine records the daily heights of a random sample of bamboo stalks, in inches.
They are: 20, 19, 17, 16, 18, 15, 20, 21
For this data Sabine wants to calculate the variance and standard deviation, which can be done using the above formula.
Hence, the formula Sabine should use for variance is,
[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]
The formula should Sabine use for standard deviation,
[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]
Learn more about the variance and standard deviation here;
https://brainly.com/question/15858152
Answer:
First Part: A and B
Second Part: 4.5 and 2.12
Step-by-step explanation:
edge 2022
After 2 years, $50,000 deposited in a savings account with simple interest had earned $15,000 in interest. What was the interest rate?
Answer:
15% simple interest
Step-by-step explanation:
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
A student finds the sum of the angle measures in an octagon by multiplying 7 • 180°. What is the student's error?
The student should compute 6*180 = 1080 because of the formula
S = 180(n-2)
We have n = 8 sides which leads the n-2 part to become n-2 = 8-2 = 6
PLEASE HELP,I AM BEING TIMED!!
Measure the angle of 1
Options: 100
90
10
60
Answer:
angle of 1 will be 60°Step-by-step explanation:
we know vertical opposite angle are equall so angle 1 = 60°WHAT IS X IF THE EQUATION IS X - 3 = 6?
Answer:
9
Step-by-step explanation:
You substitute 9 for x and 9 - 3 = 6
I hope it helps! Have a great day!
Muffin ^^
Answer:
9
Step-by-step explanation:
Add 3 to the 6 and that will get rid of the 3. You will get 9.
x - 3 = 6
x -3 + 3 = 6 + 3
x = 9
Have an amazing day!
PLEASE RATE!
Ricardo's recipe for 4 loaves of bread requires 4 7 cup of olive oil. He only wants to make 1 loaf. Ricardo makes a model to find out how much oil he needs to use. He folds a piece of paper vertically into six parts and shades four parts. Then he folds the paper horizontally into four parts and shades 1 4 of the shaded part. Ricardo decides he needs 1 4 cup of olive oil. Is he right? Complete the explanation. Give your answer as a simplified fraction. He used the number of parts he shaded, 16, as the denominator.
Answer:
Here
Step-by-step explanation:
Ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil.Now we are given that he wants to make 1 loaf. So, 4 loaves requires cup of oil So, 1 loaf requires cup of oil.
Ricardo is wrong.
he requires 1/6 cup of oil to make 1 loaf .While he decided he needs 1/4 cups
The vertices of triangle ABC are A(-2, 3), B(3, 3), and C(-2, -7). The triangle is dilated with a scale factor of 2. Estimate the perimeter of the dilated figure to the nearest whole number.
Answer:
13
Step-by-step explanation:
AB = 5
AC = 10
BC = ~11
P = 11 + 10 + 5 = 26
26 / 2 = 13
7. The time required to process a shipment of goods at Wal-Mart varies directly
with the number of goods and inversely with the number of workers assigned
IF 15.000 items can be processed by 8 workers in 10 hours, then how long would
it take 12 workers to process 20.000 items?
Answer:
I think 8 hours sorry if i am wrong.
Step-by-step explanation:
Can I have Brainliest if right?
HELPPPP
What is the value of x that makes the given equation true?
x−3x=2(4+x)
A. x=−4
B. x=−3
C. x=−2
D. x=−1
Answer:
I think your answer is c x=-2
Step-by-step explanation:
:)
The height of Tower A is 870 feet more than Tower B. The two towers have a combined height of 1,640 foot. What are the heights of each tower?
-2p - 6(p - 4) + 22
(Explanation)
Answer:
= -8p+46
Step-by-step explanation:
Let's simplify step-by-step.
−2p−6(p−4)+22
Distribute:
=−2p+(−6)(p)+(−6)(−4)+22
=−2p+−6p+24+22
Combine Like Terms:
=−2p+−6p+24+22
=(−2p+−6p)+(24+22)
=−8p+46
(There u go ;)
Find the mean from the given data: 2, 5, 7, 3, 8, 9, 10,4
Answer:
6
Step-by-step explanation:
[tex] \hookrightarrow \: number(n) = 8 \\ \hookrightarrow \: sum( \sum \: x) = 2 + 5 + 7 + 3 + 8 + 9 + 10 + 4 = 48 \\\hookrightarrow \: mean = \frac{ \sum \: x}{n} \\ \\\hookrightarrow \: mean = \frac{48}{8} = 6[/tex]
In Ms. Lee’s 3rd period class of 28 students, 7 of them have a last name that starts with the letter A. What percent of that class have a last name that starts with the letter A?
Answer:
25%
Step-by-step explanation:When you divide 7 and 28 you get 0.25 which makes 25%
The perimeter of the rectangle below is 102 ft. What is the value of X
one side is (2+x) ft
the other is 3 ft
Answer:
X=46 ft.
Step-by-step explanation:
Write an equation to solve the problem.
Since one side is 3 ft, don’t forget that there is another side of the rectangle that is also 3 ft. We can add this part to the equation as 2(3).
Now, let’s see the other side. It’s (2+x) ft. As mentioned before, there are another side, so, you guessed it: 2(2+x).
We have our equation:
2(3)+2(2+x) = 102 ft.
Simplify first:
6+4+2x = 102 ft.
10+2x=102 ft.
2x=92 ft.
x=46 ft.
Slove
......................................................................................................................................................................
Answer:
[tex]\frac{9}{35}[/tex]
Step-by-step explanation:
[tex]\frac{2}{5}-\frac{1}{7}[/tex]
Finding LCM: loading...
5,7 : 35
Adjust fraction based on LCM:
[tex]=\frac{14}{35}-\frac{5}{35}[/tex]
[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{c}-\frac{b}{c}=\frac{a-b}{c}[/tex]
[tex]=\frac{14-5}{35}[/tex]
[tex]\mathrm{Subtract\:the\:numbers:}\:14-5=9[/tex]
[tex]=\frac{9}{35}[/tex]
[RevyBreeze]
can anyone explain this to me
Answer:
angle 1: 30
angle 2: 41
angle 3: 96
Step-by-step explanation:
So the angles' sum in one triangle is 180 degrees so you know two of the first triangle's angles so you sum them up and you get: 150 so now you subtract that from 180 and get 30.
Now you can see that if you want to get angle 2 you need to get angle 3 first. so you can see that the 84 degrees is on the same line as angle 3 so, we also know that a line is 180 degrees. so 180-84=96.
Now to get angle 2 we just simply sum up 43 and 96 which is 139, then we subtract that from 180, then we get 41.
Can anyone solve this?
First, find the area of the table...
d = 4 ft ---> r = 2 ft
Area = 3.14 * (2 ft)² = 12.56 ft²
Find how many pads will cover the entire table. Since each pad is 1 ft²...
# of pads = 12.56 ft² / 1 ft² = 12.56
Find the total cost for all pads...
Total cost = 12.56 * $0.75 = $9.42
A tracksuit top costs £12.75 and matching tracksuit bottoms cost £9.50, how much does the tracksuit cost altogether?
Step-by-step explanation:
£22.25 pls mark brainliest thanks
43 A rescue boat on the ocean surface detects a sunken ship on the ocean floor. The sunken
ship makes an angle of 55° with the surface.
The distance between the rescue boat and
the sunken ship is 250 m.
Using the slope concept, it is found that the ship is sunken at a depth of 357 meters.
What is a slope?The slope is given by the vertical change divided by the horizontal change, and it's also the tangent of the angle of depression.
In this problem:
The vertical change is the depth d.The horizontal change is of 250 m.The angle is of 55º.Hence, applying the slope:
[tex]\tan{55^\circ} = \frac{d}{250}[/tex]
[tex]d = 250\tan{55^\circ}[/tex]
[tex]d = 357[/tex]
The ship is sunken at a depth of 357 meters.
More can be learned about the slope concept at https://brainly.com/question/18090623
Perform the indicated operation. 1 3 2. 4 3 어 23 5 02. 히 12 O2 2 주를
Answer:
huh am lost
Step-by-step explanation:
what is the question all about I can only understand the figure but not the symbol
Choose the graph of this equation.
Y= -2/3x - 2
Answer:
c
Step-by-step explanation:
c because
if you use a number such as -4 for x, you do
-3/2*-4 is 12/2 which is 6
6-2 is 4
the coordinate would be (-4,4)
it fits graph c
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS
Answer:
(0, -3)
explanation:
original coordinates of C: (0, -7)If reflected over y axis, there will be additive inverse in x unit
use the formula: (x,y) → (−x, y)
new coordinates: (0, -7)Then if translated vertically, there will be change in y axis:
(0, -7+4) → (0, -3)
I’m confused can someone help :(
Answer:
27 over 4
Step-by-step explanation:
To solve this, work on each side, one at a time.
Since there are variables, replace them with the numbers provided.
7x - 3y
over
2x + y
Can be translated to...
7 * 3 - 3 * -2
over
2 * 3 + -2
Let's work with the top side first.
7 * 3 - 3 * -2
Remember the order of operations (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)
Keep in mind that Multiplication and Division as well as Addition and Subtraction are done in the order shown in the problem.
Let's start by doing the multiplication...
21 - (-6)
Then the subtraction!
27!
Now for the bottom side...
2 * 3 + -2
Multiply first.
6 + -2
Then add!
4!
This leaves the answer as...
27 over 4!
Simplify the equation
3+7x-(2+9x)
3 + 7x - (2 + 9x )
3 + 7x - 2 -9x
1-2x
Answer:
1-2x
Step-by-step explanation:
3+7x-(2-9x)
(if there's a minus in front of parenthesis then you have to change the sign in the parenthesis)
3+7x-2-9x(take out from parenthesis)
1-2x(combine/simplify like terms)
PLSS HELP?!!
Use the number line below to determine the ratio of AD to El.
A B C D E F G H I J K
+
0
10
20
30
40
50
a. 3:8
b. 4:3
C. 3:4
d. 8:3
Please select the best answer from the choices provided
ΟΑ
B
OD
In the diagram below, quadrilateral H I J K is inscribed in circle L. solve for X and Y
Check the picture below.
The value of variables x and y are,
x = 1 and y = 188
What is mean by Angle?An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.
Given that;
In the diagram, quadrilateral HIJK is inscribed in circle L.
Now, We know that;
sum of opposite angle are 180 degree.
Hence, We get;
∠H + ∠J = 180
67 + (y - 75) = 180
y - 8 = 180
y = 180 + 8
y = 188
And, We get;
∠I + ∠K = 180°
96 + (x + 83) = 180
x + 179 = 180
x = 180 - 179
x = 1
Thus, The value of variables x and y are,
x = 1 and y = 188
Learn more about the angle visit:;
https://brainly.com/question/25716982
#SPJ2
Work out the bearing of B from A. I really need help with this.
Answer:
bearing of B from A is 245°
Step-by-step explanation:
the bearing of B from A is the measure of the clockwise angle from the northline N to B , that is
360° - 115° = 245°
Convert 530000 milligrams into kilograms.
*Note: you must use these exact conversion factors to get this question right.
1 pound (lb) = 16 ounces (oz)
=
1 kilogram (kg) = 1000 grams (g)
1 ton (ton) = 2000 pounds (lb)
1 ounce (oz) = 28.35 grams (g)
1 gram (g) = 1000 milligrams (mg) 1 pound (lb) = 0.454 kilograms (kg)
Answer:
I believe it is 0.53 kilograms
Step-by-step explanation:
530,000 milligrams = 530 grams which is 0.53 of a kilogram. Hope this helps :)
7th grade.
reasoning about equations and tape diagrams. don't do number 6
Answer:
4. x=3
5. 27
Step-by-step explanation:
4. 6(x+1) = 24, because you work the equation backwards and the opposite way, 24/6 then - 1
5. put the numbers from lowest to highest temperature
9'c, -3'c, 22'c, -5'c, 11'c, 15'c
-5'c, -3'c, 9'c, 11'c, 15'c, 22'c
range - is the highest number - lowest
22--5 =22+5 , therefore range is 27
HELP ME PLZZ THIS DUE TODAY!
Answer:
D.
Step-by-step explanation:
I think that the easiest one would be D, because even after you use the property, it will still have addition only.