this is an easy question so whoever is the first one who gets all of them I will make you the brainlist queen or King
Answers
Answer:
1. 3.87
2. 7.07
3. 69.89
4. 70.87
Step-by-step explanation:
2) 7.07
3) 69.89
4) 70.87
Related Questions
Based on 20 samples, the average resistance is 25 ohms and the sample standard deviation is 0.5 ohm. Determine the 90% confidence interval of the standard deviation of the batch. (10 points)
Answers
Answer:
90% Confidence Interval = [24.81, 25.19]
Step-by-step explanation:
From the question, our number of samples is 20, it is small because it is less than 30. Hence we use the t score confidence interval formula
= Mean ± t score × Standard deviation/√n
Mean = 25 ohms
Standard deviation = 0.5 ohms
n = 20
We find the degrees of freedom = n - 1
= 20 - 1 = 19
Using the T score table
T score for 90% confidence interval with degrees of freedom 19
= 1.729
Hence:
Confidence Interval =
= 25 ± 1.729 × 0.5/√20
= 25 ± 0.1933080767
=
Confidence Interval
25 - 0.1933080767
= 24.806691923
≈ 24.81
25 + 0.1933080767
= 25.1933080767
≈ 25.19
90% Confidence Interval = [24.81, 25.19]
Employees of the store in the example Wear shirts with the logo on the back
Answers
Answer:
the logo could be kate spade
Derermine the intercepts of the line x-intercept(____,___)
Y-intercept(____,____)
Answers
Answer:
x intercept(3, 0) y intercept(0, -10)
A function, f(x), represents the distance a car travels over time. The line tangent to the function at x=1 is y=0.6x+0.9. The line tangent to the function at x=4 is y=2.1x-3.2. The line tangent to the function at x=6 is y=4.6x-16.3.
Answers
9514 1404 393
Answer:
0.6
Step-by-step explanation:
The instantaneous rate of change at any point on a curve is the slope of the tangent line at that point.
At x=1, the tangent line is given as ...
y = 0.6x +0.9
The slope of that line is the coefficient of x, 0.6.
The instantaneous rate of change of f(x) at x=1 is 0.6.
the area of a face of a cube is 144cm^2 . find its volume
Answers
Step-by-step explanation:
1 face area = length x width (aka length x length since cube)
therefore 1 side = ±√144 cm = 12 cm or - 12cm (rej as length > 0cm)
volume = length x width x height = 12 x 12 x 12 = 1728cm^3
Topic: Mensuration
If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!
3 times the sum of one third of a number and 8 is 11
Answers
Answer:
3([tex]\frac{1}{3}[/tex]x+8)=11
Step-by-step explanation:
It says 3 times the sum of one third of a number and 8, so we group that expression into the parentheses. Since there is a key word is, we need to put an equal sign.
Bradly can earn extra money by mowing lawns. His neighbors will pay him 3.00 for each lawn that takes him 3/4 of an hour. What is the amount of time in extra hours, that Bradley would have to spend mowing lawns to be able to buy a second $48 ticket for his brother.
Answers
Time for which Bradly has to mow lawns to get $48:
We know that Bradly earn $3 every 3/4 hours of mowing lawns
Time taken by Bradly to get $1:
time taken by Bradly to get $1 = time taken to get $3 / $3
time taken = (3/4) / 3
time taken = 1/4 hours / dollar
Time taken by Bradly to get $48:
Time taken to get $48 = time taken to get $1 * 48
Time taken to get $48 = 1/4 * 48
Time taken = 12 hours
Therefore, after 12 hours of Mowing lawns, Bradly will have $48
A charter airline finds that on its Saturday flights from Philadelphia to London all 180 seats will be sold if the ticket price is $200. However, for each $3 increase in ticket price, the number of seats sold decreases by one. (a) Find a formula for the number of seats sold S if the ticket price is P dollars.
Answers
Answer:
[tex]S = -\dfrac{1}{3}P+\dfrac{740}{3}[/tex]
Step-by-step explanation:
Given that:
Number of seats sold is 180 with ticket price $200.
Number of seats decreases by one when the ticket price is increased by $3.
To find:
The formula for the number of seats sold (S) when the ticket price is P dollars.
Solution:
It is linear dependency of number of seats sold, S on ticket price, P.
[tex]S\propto P[/tex]
It can be written as:
[tex]S = kP+C[/tex]
Where [tex]k[/tex] is the constant of proportionality and
[tex]C[/tex] is a constant.
Now, putting the given values:
[tex]180 = 200k +C ..... (1)[/tex]
[tex]179 = 203k+C[/tex] ...... (2)
Subtracting (1) from (2):
[tex]3k = -1\\\Rightarrow k =-\dfrac{1}{3}[/tex]
Putting the value in (1):
[tex]\Rightarrow C = 180+\dfrac{200}{3} = \dfrac{740}{3}[/tex]
Therefore the equation becomes:
[tex]S = -\dfrac{1}{3}P+\dfrac{740}{3}[/tex]
Determine if the triangles are congruent. If so, write a congruence statement. Explain your reasoning in a short paragraph proof.
PLS Help I'M IN A RUSH
BRAINLIEST WILL BE MARKE FOR THE BEST ANSWER GIVEN
Answers
Answer: Yes
Step-by-step explanation:
The Vertical angle would show that 2 of the angles are exactly the same. Its also given 2 lines that are marked as congurent. Since we know that angle and the lines are congruent we can also say that angle IFJ is congruent to angle IHG meaning that they are congruent because of ASA (Angle Side Angle Theorem)
Congruent triangles have equal corresponding sides lengths and angle measures.
The triangles are congruent by ASA
From the attached figure, we have:
[tex]\mathbf{HI \cong IF}[/tex]
Lines HG and JF are parallel lines.
It means that:
Angles G and F are corresponding, and also angles at I in both triangles are vertical angles.
So, we can conclude that both triangles are congruent by ASA
Read more about congruent triangles at:
https://brainly.com/question/12413243
3.f(-4)-3.g(-2) please help me with this problem
Answers
3.f(-4)-3.g(-2) please help me with this problem
Answer:
-12f + 6g
Step by step explanation:
Let Y1 and Y2 denote the proportion of time during which employees I and II actually performed their assigned tasks during a workday, The joint density of Y1 and Y2 is given by
f(y1,y2) = { y1+y2, 0<=y1<=1, 0<=y2<=1, 0, elsewhere
Required:
a. Find the marginal density function of Y1 and Y2
b. Find P(Y1 >= 1/2 | Y2 >= 1/2).
c. If employee II spends exactly 50% of the dayworking on assigned duties, find the probability that employee I spends more than 75% of the day working on similarduties.
Answers
Answer:
Step-by-step explanation:
From the information given:
The joint density of [tex]y_1[/tex] and [tex]y_2[/tex] is given by:
[tex]f_{(y_1,y_2)} \left \{ {{y_1+y_2, \ \ 0\ \le \ y_1 \ \le 1 , \ \ 0 \ \ \le y_2 \ \ \le 1} \atop {0, \ \ \ elsewhere \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ } \right.[/tex]
a)To find the marginal density of [tex]y_1[/tex].
[tex]f_{y_1} (y_1) = \int \limits ^{\infty}_{-\infty} f_{y_1,y_2} (y_1 >y_2) \ dy_2[/tex]
[tex]=\int \limits ^{1}_{0}(y_1+y_2)\ dy_2[/tex]
[tex]=\int \limits ^{1}_{0} \ \ y_1dy_2+ \int \limits ^{1}_{0} \ y_2 dy_2[/tex]
[tex]= y_1 \ \int \limits ^{1}_{0} dy_2+ \int \limits ^{1}_{0} \ y_2 dy_2[/tex]
[tex]= y_1[y_2]^1_0 + \bigg [ \dfrac{y_2^2}{2}\bigg]^1_0[/tex]
[tex]= y_1 [1] + [\dfrac{1}{2}][/tex]
[tex]= y_1 + \dfrac{1}{2}[/tex]
i.e.
[tex]f_{(y_1}(y_1)}= \left \{ {{y_1+\dfrac{1}{2}, \ \ 0\ \ \le \ y_1 \ \le , \ 1} \atop {0, \ \ \ elsewhere \ \\ \ \ \ \ \ \ \ \ } \right.[/tex]
The marginal density of [tex]y_2[/tex] is:
[tex]f_{y_1} (y_2) = \int \limits ^{\infty}_{-\infty} fy_1y_1(y_1-y_2) dy_1[/tex]
[tex]= \int \limits ^1_0 \ y_1 dy_1 + y_2 \int \limits ^1_0 dy_1[/tex]
[tex]=\bigg[ \dfrac{y_1^2}{2} \bigg]^1_0 + y_2 [y_1]^1_0[/tex]
[tex]= [ \dfrac{1}{2}] + y_2 [1][/tex]
[tex]= y_2 + \dfrac{1}{2}[/tex]
i.e.
[tex]f_{(y_1}(y_2)}= \left \{ {{y_2+\dfrac{1}{2}, \ \ 0\ \ \le \ y_1 \ \le , \ 1} \atop {0, \ \ \ elsewhere \ \\ \ \ \ \ \ \ \ \ } \right.[/tex]
b)
[tex]P\bigg[y_1 \ge \dfrac{1}{2}\bigg |y_2 \ge \dfrac{1}{2} \bigg] = \dfrac{P\bigg [y_1 \ge \dfrac{1}{2} . y_2 \ge\dfrac{1}{2} \bigg]}{P\bigg[ y_2 \ge \dfrac{1}{2}\bigg]}[/tex]
[tex]= \dfrac{\int \limits ^1_{\frac{1}{2}} \int \limits ^1_{\frac{1}{2}} f_{y_1,y_1(y_1-y_2) dy_1dy_2}}{\int \limits ^1_{\frac{1}{2}} fy_1 (y_2) \ dy_2}[/tex]
[tex]= \dfrac{\int \limits ^1_{\frac{1}{2}} \int \limits ^1_{\frac{1}{2}} (y_1+y_2) \ dy_1 dy_2}{\int \limits ^1_{\frac{1}{2}} (y_2 + \dfrac{1}{2}) \ dy_2}[/tex]
[tex]= \dfrac{\dfrac{3}{8}}{\dfrac{5}{8}}[/tex]
[tex]= \dfrac{3}{8}}\times {\dfrac{8}{5}}[/tex]
[tex]= \dfrac{3}{5}}[/tex]
= 0.6
(c) The required probability is:
[tex]P(y_2 \ge 0.75 \ y_1 = 0.50) = \dfrac{P(y_2 \ge 0.75 . y_1 =0.50)}{P(y_1 = 0.50)}[/tex]
[tex]= \dfrac{\int \limits ^1_{0.75} (y_2 +0.50) \ dy_2}{(0.50 + \dfrac{1}{2})}[/tex]
[tex]= \dfrac{0.34375}{1}[/tex]
= 0.34375
If 1/2 cup of white sugar is needed for one batch of oatmeal raisin cookies, how much white sugar is needed for 8 batches of cookies?
Answers
Answer:
4 cups
Step-by-step explanation:
For one batch of cookies you'll need 1/2 cup of sugar. 8 batches of cookies is 8 times the amount of batches of one batch of cookies. So, if the amount of batches is multiplied by 8, then we need to multiply the amount of sugar by 8 as well:
1/2 * 8 = 8/2 = 4/1 = 4
4 cups of white sugar are needed for 8 batches of cookies.
the residents of a city voted on whether to raise property taxes. the ratio of yes votes to no votes was 7 to 4. if there were 9339 total votes, how many no votes where there?
Answers
9514 1404 393
Answer:
3396
Step-by-step explanation:
The ratio tells you that out of every 7+4 = 11 votes, 4 of them were 'no' votes. Then the number of no votes is ...
(4/11)(9339) = 3396 . . . no votes
write the expanded form of 4(3+4x-2), please help.
Answers
+2 +2 and this cancele each other
So 6(3+4x)
So 6*8x
-6. -6
= x=2
Find the slope of the line that passes through (4, 9) and (6, 10).
Answers
Answer:
y = 4/5x + 14/5
Step-by-step explanation:
yee
Describe each of the following values as (A) a discrete random variable, (B) a continuous random variable, or (C) not a random variable: 1. Exact weight of quarters now in circulation in the United States 2. Shoe sizes of humans 3. Political party affiliations of adults in the United States A.
Answers
Answer:
1. Is a continuous random variable
2. Is a discrete random variable
3. Is not a random variable
Step-by-step explanation:
1. The exact Weight of quarters in circulation in the united states is a continuous random variable. This is because a random variable such as this can take uncountable and infinite number of values.
2. The shoe sizes if humans is an example of discrete random variable. This is a discrete random variable because it has countable number of values.
3. Political party affiliation is not a random variable.
Thank you!
Part 1) Which rate is NOT a unit rate? (Circle)
a) 1/4 inch/1 year
b) $5/3 pounds
c) $13.50/1 hour
d) 15 drops/1 liter
Answers
The answer is
B ($5/3 pounds)
Answer:
it is B
Step-by-step explanation:
it is B $5/3 pounds
please help properties of exponents
Answers
Answer:
Step-by-step explanation:
3. [tex]c^{11}[/tex] add exponents
4.[tex]m^{60}[/tex] multiply exponents
5.[tex]x^{6} y^{18}[/tex] distribute and multiply exponents
6. [tex]-21 a^{47} *b[/tex] multiply and then add exponents
7.[tex]100 a^{14} b^{4} c^{12}[/tex] distribute and multiply exponents
8.[tex]n^{22}[/tex] multiply and then add exponents
Joanne is planning her spring garden. Plants cost an average of $4.95. She will be
buying 10 plants. Which is the best estimate of how much she will spend altogether?
Answers
Answer:
49.50
Step-by-step explanation:
Answer:
Estimate: $50.00
Step-by-step explanation:
Estimate: round both numbers
$4.95 rounds up to $5.00
10 plants is rounded to 10 plants
Set up equation
$5.00 × 10 plants
Solve
$50.00 total
i need help. Somebody help me out
Answers
Answer:
6.31 thats what I think
Answer:D
Step-by-step explanation:
A 7676 foot guy wire is attached to the top of an antenna. The angle between the guy wire and the ground is 68o68o. How tall (in feet) is the antenna
Answers
Answer:
70.47feet
Step-by-step explanation:
CHECK THE ATTACHMENT FOR THE INTERPRETATION OF THE QUESTION USING A FIQURE
From the attachment we can see that a triangle was formed, where the
OPPOSITE SIDE= X
HYPOTENUSE=76feet
From trigonometry,
Sin(θ)=opposite/Hypotenuse
Sin(68)= X/76
Cross multiply, we have,
X= Sin(68) × 76
X= 0.9272 × 76
X= 70.47feet
Therefore, the antenna is 70.47feet tall.
Which of the following is equivalent to (2a+1)(2a+1)?
O (2a + 1)2
O 4a + 2
O 2(2a + 1)
O4a²+1
Answers
The equivalent expression is (2a + 1)².
Option (A) is correct.
What is a Polynomial?Polynomial, a mathematical expression made comprised of numbers and variables arranged in specific patterns. They serve as the foundation for solving algebraic equations.
As per the given data in the question:
We are given an expression, and we have to find out the equivalent expression from the given options in the question.
The expression is (2a + 1)(2a + 1)
For option (A). (2a + 1)²
In (2a + 1)(2a + 1) using associative multiplication.
= 2a.2a + 2a + 2a + 1
= 4a² + 4a + 1
Using the identity: a² + 2ab + b² = (a + b)²
4a² + 4a + 1 = (2a + 1)²
The equivalent expression is (2a + 1)².
Hence, The equivalent expression is (2a + 1)².
To learn more about Polynomial, click:
brainly.com/question/11536910
#SPJ7
The points (-1,-6) and (-3,t)fall on a line with a slope of -5 . what is the value of t?
Answers
Answer:
t = -4
Step-by-step explanation:
[tex]\frac{6 - t}{-1 - (-3)}[/tex] = -5
[tex]\frac{6 - t}{2}[/tex] = -5
6 - t = 10
-t = 4
t = -4
Doris traveled 153 miles on Tuesday. She traveled 270 miles on Wednesday. How many more miles did she travel on Wednesday than she did on Tuesday?
Answers
Answer:
117
Step-by-step explanation:
270 -153=117
simpifly 24/36
...........................
Answers
Answer: 2/3 would be the simplified form
Step-by-step explanation: Hoped this helped!!!
Answer: 2/3
Step-by-step explanation:
PLEASE HELP! Find the cosine of angle G. Write your answer in simplified, rationalized form. Do not round. (see attached image)
Answers
Answer:
2/5
Step-by-step explanation:
4+19=25
square root of 25 is 5 so
adjacent over hypotenuse is 2/5
this might be wrong but I think this is how u do it
Answer:
just follow this formula
cos=adjacent over (divided by) hypothenuse
Step-by-step explanation:
answer 2 over √19
Based on the information in the diagram, can you prove and explain that the figure is a
parallelogram?
a. Yes; both pairs of opposite sides are congruent.
b. Yes; both pairs of opposite angles are congruent.
c. Yes; one pair of opposite sides are both parallel and congruent.
d. Yes; one pair of opposite angels are congruent and one pair of opposite sides are congruent.
e. No; you cannot prove that the quadrilateral is a parallelogram.
Answers
Ronna needs 20.5 pints of blueberries to make jam. She picked 7.75 pints on Friday and 4,25 pints on Saturday, Hon
many more pints does she need to pick?
Answers
Answer:
8.5 I believe
Step-by-step explanation:
7 + 4 = 11
.75 + .25 = 1
11 + 1 = 12
20.5
- 12 .0
8 . 5
please answer correctly see image bellow
Answers
4⁸
alternative form:
65536,6.5536×10⁴
define photosynthesis
Answers
Step-by-step explanation:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.