Answer:
C bˆ is unbiased.
Step-by-step explanation:
In statistics, the sampling distribution showcases the distribution of obtained values by the statistics in all possible sample sizes of the same population. A statistic that estimates a population parameter is termed to be an unbiased estimator if the mean of such distribution appears to be equal to the true value of the estimated parameter.
Thus, from the aforementioned, the property exhibited by b- is unbiased.
d is biased
Step-by-step explanation:
The expected value of d is not D
The property where the expected value of d is D is called unbaisedness, hence d is biased
what is the solution to -2x+y=8 and -3x-y=7
I WILL GIVE BRAINLIEST!!!! ANSWER QUICK!!!
Which of the following represents the general equation for the geometric sequence?
-1, -2, -4, …
a n = 2 n - 1
a n = -1 · 2 n - 1
a n = 1 · 2 n + 1
a n = 1 · 2 n - 1
Answer:
-1,-2,-4
an = a1 * r^(n - 1)
a1 = first term = -1
r = common ratio = 2
so the equation would be : an = -1 * 2^(n - 1)
The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of
Complete Question:
The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of D is five-halves the measure of Y. Find the measure of each angle of the deck.
Answer:
[tex]\angle G = \angle Y = 51.43 ^{\circ}[/tex]
[tex]\angle D = \angle R = 128.57 ^{\circ}[/tex]
Step-by-step explanation:
Given
Shape: Parallelogram DGRY
Dimension: [tex]\angle D = \frac{5}{2}\angle Y[/tex]
Required
Find the measure of each angle
D and R are opposite sides & G and Y are also opposite sides.
So, we have:
[tex]\angle D = \angle R = \frac{5}{2}\angle Y[/tex]
and
[tex]\angle G = \angle Y[/tex]
The sum of angles is given as:
[tex]\angle D + \angle G + \angle R + \angle Y=360^{\circ}[/tex]
Substitute values for [tex]\angle D, \angle G \ \& \angle R[/tex]
[tex]\frac{5}{2}\angle Y + \frac{5}{2}\angle Y + \angle Y + \angle Y = 360^{\circ}[/tex]
Take LCM
[tex]\frac{5\angle Y + 5\angle Y + 2\angle Y+ 2\angle Y}{2}= 360^{\circ}[/tex]
[tex]\frac{14\angle Y}{2}= 360^{\circ}[/tex]
Multiply both sides by [tex]\frac{2}{14}[/tex]
[tex]\frac{2}{14} * \frac{14\angle Y}{2}= 360^{\circ} * \frac{2}{14}[/tex]
[tex]\angle Y= 360^{\circ} * \frac{2}{14}[/tex]
[tex]\angle Y= \frac{ 360^{\circ} *2}{14}[/tex]
[tex]\angle Y= \frac{720^{\circ}}{14}[/tex]
[tex]\angle Y= 51.43 ^{\circ}[/tex]
So:
[tex]\angle G = \angle Y = 51.43 ^{\circ}[/tex]
[tex]\angle D = \frac{5}{2}\angle Y[/tex]
[tex]\angle D = \frac{5}{2} * 51.43^{\circ}[/tex]
[tex]\angle D = \frac{5* 51.43^{\circ}}{2}[/tex]
[tex]\angle D = \frac{257.15^{\circ}}{2}[/tex]
[tex]\angle D = 128.57 ^{\circ}[/tex]
Hence:
[tex]\angle D = \angle R = 128.57 ^{\circ}[/tex]
Can anyone help me answer question #2
Step-by-step explanation:
[tex] {b}^{2} - 4b - 21 = (b + 3)(b - 7) \\ m = 3 \\ v = 4[/tex]
The department store buys a suit for $72. They mark it up 110%, what is the
mark-up amount?
Answer:
$79.20
Step-by-step explanation:
to find markup just multiply 72 by 110%. Conver 110% to a decimal, which is 1.1 Then multiply 72 by 1.1 = 79.2
So the markup amount is $79.20
Use the diagram to decide whether the congruence statement is true. Explain your reasoning triangle ABC cong triangle EBD
Answer:
It is not true.
Step-by-step explanation: They arn't congruence
An antique desk,that once belonged to President Kennedy, appreciates in value by 15% per year. If Mark Zuckerberg were to purchase the desk for $50,000,how much would it be worth from now?
Answer:
$57500
Step-by-step explanation:
Given data
Initial cost of desk= $50,000
Percent increase=15%
=15/100*50,000
=0.15*50,000
=$7500
Hence the new price is 7500+50,000
=$57500
SOMEONE PLEASE HELP ME!!!!!! I RLLY NEED THE ANSWER TO THIS!!!
The Pythagorean Theorem states that a² + b² = c?, where a and b are legs of a
right triangle and c is the hypotenuse. Are you able to simplify the Pythagorean
Theorem further to say that a + b = c? Explain.
Answer:
yes, you can square root to entire equation to get to a+b=c, the square root cancels out the 2
Step-by-step explanation:
cantidad de cajas cantudad de lapises
Answer:
no lo sé
Step-by-step explanation:
Number of boxes number of pencils?
No hay algo en concreto :'v
It took Mariel two hours to complete 13 pages in a workbook she completed 7 1/2 pages in the first hour how many pages does he complete in the second hour
B 5 1/2
Hope it helped!!!
1.How will you determine the center and radius given the equation of the circle
in standard form? in general form?
2.How will you determine the equation of the circle given the center and radius ?
Answer:
Step-by-step explanation:
Circle Standard Form
The standard form of a circle's equation is (x-h)² + (y-k)² = r² where (h,k) is the center and r is the radius. To convert an equation to standard form, you can always complete the square separately in x and y.
42% OF WHAT NUMBER IS 2? If you could please use the fiery cross?
Answer:
2100
Step-by-step explanation:
Sorry i dont know what the fiery cross is
Need help please.........................
Answer:
16[tex]t^{2}[/tex] + 2t - 6
Step-by-step explanation:
[tex](12t^{2} + 5t -y) - (-4t^{2} + 3t -1)[/tex]
simplify
[tex]12t^{2} + 5t -7 +4t^{2} -3t +1[/tex]
combine like terms
16[tex]t^{2}[/tex] + 2t - 6
One set of 5 numbers from the mode of 5, a median of 6, and a mean of 7.
PLS ANSWER QUICK I WILL GIVE WHAT EVER U WANT!!!!!!!!!
Suppose one batch of cookies requires ⅔ cup of flour. How many batches can be made with 4 cups of flour?
Answer:
6 batches
Step-by-step explanation:
Answer:
the answer is 8/3 u have to mutplay
Step-by-step explanation:
Dan has twice as many stickers as Cam does. If Dan gives Cam 15 of his stickers he will still have 22 more than Cam. How many stickers does each boy have?
Which best describes the reflection?
Ricardo bought $46.23 worth of groceries and paid with a $100 bill. How much change did he receive?
Answer:
Step-by-step explanation:
You will need to subtract the amount paid from the total amount
100 - 46.23
= 53.77
Ricardo will receive $53.77 in change. :)
The number of math problems was increased from 15 to 21. By what percent did the number of problems increase?
A 20%
B 30%
C 40%
D 45%
Calcula el area de un triangulo rectángulo en el cual los catetos miden 22m y 16m
Answer:
176 cm2
Step-by-step explanation:
la formula es b×a/2, entonces multiplica 22×16= 352 y los divides entre 2= 176 centímetros cuadrados
3. Write the equation of the line passing through the point (-2, 0) that is
PARALLEL to y = -3/2x - 2 in slope-intercept form.
Answer:
y=-3/2x-3
Step-by-step explanation:
I just know so...
Hope this helps :)
help me please I need
Answer:
I think the answer is A=49
Mary has 20 biscuits in a tin there are 11 plain biscuits 7chocolate biscuits 2 currant biscuits sue takes at random 2 biscuits from the tin work out the probability that the 2 biscuits were not the same type?
If my diameter is 35.64 what is my circumference
Answer:
55.9548
Step-by-step explanation:
35.64 ÷ 2 = 17.82
17.82 × 3.14 = 55.9548
Answer: 111.97
Step-by-step explanation:
Circumference of a circle= 2πr
r= d/2
diameter= 35.64
Therefore circumference= 2*(3.14)*(35.64/2)
= 111.97
From the set {7.8, 8.5, 9.1, 9.9}, use substitution to determine which value of x makes the equation true. 3.2 (x - 6.7) = 5.76
Answer:
8.5
Step-by-step explanation:
Given the equation :
3.2(x - 6.7) = 5.76
x - 6.7 = 5.76 / 3.2
x - 6.7 = 1.8
x = 1.8 + 6.7
x = 8.5
Answer:
8.5
Step-by-step explanation:
Your checking account is overdrawn by $5. You go to Target and make a purchase of $12 with the same checking account. What integer represents the balance in your account?
Answer choices
$ 17
$ -17
$ 7
$ -7
Simply 8t + 6r - 3t + 2r
Answer: 8r+5t
Step-by-step explanation:
8t + 6r - 3t + 2r
8t-3t= 5t
6r+2r=8r
= 8r+5t
Answer:
The answer would be 8r + 5t
Naomi and Hudson work at a dry cleaners ironing shirts. Naomi can iron 35 shirts per hour, and Hudson can iron 20 shirts per hour. Naomi and Hudson worked a combined 13 hours and ironed 395 shirts. Write a system of equations that could be used to determine the number of hours Naomi worked and the number of hours Hudson worked. Define the variables that you use to write the system.
Answer:
Given that Naomi and Hudson work at a dry cleaners ironing shirts, and Naomi can iron 35 shirts per hour, while Hudson can iron 20 shirts per hour, knowing that Naomi and Hudson worked a combined 13 hours and ironed 395 shirts, to write a system of equations that could be used to determine the number of hours Naomi worked and the number of hours Hudson worked, the following logical reasoning should be performed:
Naomi, working 13 hours, can iron up to 455 shirts (13 x 35), with which, every hour that Hudson has worked and she does not imply a decrease of 15 ironed shirts. Since 455 - 395 equals 60, and 60/20 equals 3, it is determined that Hudson worked 3 hours, while Naomi worked 10 hours.
Thus, the proposed inequality would be the following:
35Y + 20X = 395
Fill in the blank to factor to write an equivalent expression to 36a - 16.
(blank)(9a - 4)
shirt cost 40 dollars , currentley its on sale for 30 % off . What os the new cost of the shirt
Answer:
$28
Step-by-step explanation: