90 POINTS The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. Which
statement is true if we are testing the null hypothesis at the 95% confidence level?
OA. The difference of the two means is significant, so the null hypothesis must be rejected.
OB The difference of the two means is significant, so the null hypothesis must be accepted.
Ос. The difference of the two means is not significant, so the null hypothesis must be rejected.
OD. The difference of the two means is not significant, so the null hypothesis must be accepted.
Answer:
answer is D
The difference of the two means is not significant, so the null hypothesis must be accepted.
*
4. Find the value of x in the given parallelogram.
(2x+5)*
1159
Your answer
Answer:
x = 55
Step-by-step explanation:
Use the property of a parallelogram,
" Opposite interior angles of a parallelogram are equal in measure"
By this property, opposite angles given in the figure will be equal.
(2x + 5)° = 115°
2x = 115 - 5
2x = 110
x = [tex]\frac{110}{2}[/tex]
x = 55
Therefore, x = 55 will be the value.
find the area of a trapezoid
Answer:
the right answer is
270 squared unit
The vertices of triangle PQR are given in the standard (x,y) coordinate plane below. What is the area, in the square coordinate units, of triangle PQR?
Answer:
Area = 12
Step-by-step explanation:
Given
See attachment
Required
Area of [tex]\triangle PQR[/tex]
From the attached image, we have:
[tex]P = (6,10)[/tex]
[tex]Q = (10,8)[/tex]
[tex]R = (6,4)[/tex]
The area is then calculated as:
[tex]A = \frac{1}{2}|(x1y2 - x2y1) + (x2y3 - x3y2) + (x3y1 - x1y3)|[/tex]
So, we have:
[tex]A = \frac{1}{2}|(6*8 - 10*10) + (10*4 - 6*8) + (6*10 - 6*4)|[/tex]
Using a calculator:
[tex]A = \frac{1}{2}|-24|[/tex]
Remove absolute bracket
[tex]A = \frac{1}{2} * 24[/tex]
[tex]A = 12[/tex]
What number do I use for pi
3.14. so yeahhhhhhhhhhhhhhhhh
PLEASE HELP!! what is the area of the regular polygon
Question:
What is the area of the regular polygon
Answer:
72Step-by-step explanation:
Since the radius is 6 the Length/Width should also be 6 so the polygon has 6 sides so 6/3 = 2 x 6 = 12 x 6 = 72
72 is your answer
What value(s) can x have if |x| = 94?
Answer:
absolute value or modulus of a real number x, denoted |x|, is the non-negative value of x without regard to its sign. Namely, |x| = x if x is positive, and |x| = −x if x is negative (in which case −x is positive), and |0| = 0.
Step-by-step explanation:
Answer:
x=94 or -94
Step-by-step explanation:
x=94 or -94
A regular polygon has an interior angle of 171 degrees. Show your work. (3 points for work, 3 points
for correct answers)
a) How many sides does it have?
b) What is the sum of the interior angles?
c) What is the measure of one of its exterior angles?
Answer:
a) 40 sides
b) 6840
c) 9 gegrees
Step-by-step explanation:
interior angle= (n-2)180
n
[tex] (n - 2)180 \div n = 171 \\ 180n - 360 = 171n \\ 180n - 171n = 360 \\ 9n = 360 \\ n = 360 \div 9 = 40 \\ [/tex]
so total number of sides is 40
b) Sum of interior angles= (n-2)×180
(40-2)×180
38×180
6840
c) Exterior angle = 360 ÷ n
360÷40 =9 degree
Find the first three iterates of the function f(z) = 2z + (3 - 2i) with an initial value of zo = 5i.
a. 3+8i, 9 - 14i, 21 - 26i
c. 3+ 8i, 9 + 14i, 21 + 26i
b. 3+ 8i, 11 - 16i, 23 - 28i
d. 3 + 8i, 11 + 16i, 23 + 28i
Answer:
C
Step-by-step explanation:
Saw it on a quizlet
Katniss is a good hunter, gatherer, and caretaker.
Simple or Compound? And why...
Answer:
It is compound because it is explaining
Step-by-step explanation:
Answer:
Simple, It's As Simple As Possible
Please look at the picture!
Answer:
Answer= A- 7%
Step-by-step explanation:
42/100= 42%
35/100= 35%
42%-35%= 7%
find the value of x and y
What is the area?
**I will give brainliest to the correct answer**
Answer:
the answer is 648 bc when you multiply all the answer one at a time you would get 648
y=x+3
y=1/3x-5
solve and graph
Answer:
(-9, -12)
Step-by-step explanation:
Given the expressions
y=x+3
y=1/3x-5
Equating both expressions;
y = y
x + 3 = 1/3x - 5
x - 1/3x = -5 -3
2/3 x = -8
x/3 = -4
x = -12
Since
y = x+ 3
y = -12 + 3
x = -9
Hence the required solution is (-9, -12)
If sin 0 = 1/2, find the degree measure of 0.
Answer:
30°
Step-by-step explanation:
[tex] \sin \theta = \frac{1}{2} \\ \\ \sin \theta = \sin 30\degree \\ \\ \theta = 30 \degree[/tex]
What is the slope of the line
Answer:
0
Step-by-step explanation:
Line is parallel to the x-axis,
Therefore slope = 0
(Any line which is parallel to the x-axis has zero slope)
2ax^2+bx−2ay^2−by^2
Answer:
=2
Step-by-step explanation:
HELP PLS
The figure below has a point marked with a large dot.
First, translate the figure 8 units to the left.
Then, give the coordinates of the marked point in the original figure and the final figure.
Answer:
(1, -7) .................
PLS HELP and explain how pls
Answer:
31 r 3
i know
Answer:
Step-by-step explanation:
940 divided by 30
try to fit 30 into 94 as many times possible
30*3 =90 , 94 -90 =4
3 goes on top
4 on the bottom and is join by 0 that you bring down to make 40
try to fit 30 into 40
30*1=30, 40 -30 =10
940/30 = 31 remainder 10
El punto p se muestra en la recta numerica.
La distancia entre el punto Q y el punto P es de 6 1/2 unidades . Que numero podria representar el punto Q ?
Answer:
2 1/2 o 10 1/2
Step-by-step explanation:
q podría estar 6.5 unidades a la derecha ... oa la izquierda ... del punto p.
a la derecha: p + q ⇒ -4 + (6 1/2) = 2 1/2
a la izquierda: p - q ⇒ -4 -(6 1/2) = -10 1/2
Answer:
ooo me vengo xd
Step-by-step explanation:
a quadratic function has been translated 5 units up and 7 units left and it is vertically stretched by a factor of 2
Answer:
[tex]2( {x + 7})^{2} + 5[/tex]
Step-by-step explanation:
Our Standard form for each of these transformations is
[tex]a( {x + h)}^{2} + k[/tex]
Insert each value into the appropriate.
K is for vertical movement
h is for horizontal
a is for stretching/compression
15. A door wedge is shaped like a triangular prism. The wedge is filled with sand. How
many cubic centimeters of sand is needed to fill the door wedge?
Answer:362
Step-by-step explanation:
You need to multiply
Answer:
126
Step-by-step explanation:
you add them all up and the sides that don't have the number there's already info about it it's like this
18 x 3 + 30 + 24 + 18 = 126
and you don't know how to do 18 x 3 lol it's 54
Helpppppppppp meeeeeeeeeee
Answer:
D
Step-by-step explanation:
a/7 =9
a=?
What does a=?
Answer:
a = 63
Step-by-step explanation:
Let's double check,
63 ÷ 7 = 9
---------
I got the answer by multiplying the 9 and the 7, making it 63.
---------
Have a good day :)
Answer:
A is equal to 63
Step-by-step explanation:
How you ask? multiply 7 on both sides. 9×7 is 63
Will mark brainliest please help ASAP ASAP A bag contains 10 marbles.Four of them are red, three blue two white, and one yellow. A marble is drawn at random. what is the probability that it is red? Make sure you reduce your answer.
Answer: 2/5 or 40%
Step-by-step explanation:
10 total
4 red
4/10 are red
as a reduced fraction: 2/5
as a percent: 40%
Answer:
40%
Step-by-step explanation:
4/10 marbles are red therefore there is a 40 % chance you get a red marble
4/10 = .4
.4 x 100% = 40 %
16,4,1,...
Find the 6th term.
Answer:
1/64
Step-by-step explanation:
You divide by 4 each time.
It goes 16,4,1,1/4,1/16, 1/64 and so on
Preciso de ajudar nessa questão que segue em anexo.
Answer: $85
Step-by-step explanation:
Não falo português mas tentarei ajudar.
Multiplique 6 2/3 e 3 1/7.
6 2/3 x 3 1/7 = 20 20/21
Dividir 20 20/21 e 5.
20 20/21 / 5 = 4 4/21.
Precisa de cinco latas de tinta.
5 x $17 = $85
A bag contains three red marbles, four blue, nine yellow, and five green. what is the probability of getting a yellow or green
Answer:
14/21 or 2/3
Step-by-step explanation:
66 percent
Answer:
Step-by-step explanation:
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer:
I think it's d sorry if wrong
Answer:
2 lb 1 oz
Step-by-step explanation:
There are 16 ounces in one pound, and since one candy bar weighs 3 ounces 3 x 11 = 33. 33 Ounces is equal to option D :)
X+4-1=3 x=
Please help me!
Answer:
x=0
Step-by-step explanation:
add 4 to -1 that gives you 3 and then slide 3 to the other side which gives you 3-3 and that equals 0.