a researcher creates two random samples, each with sample size of 12. he does not find a statically significant difference between the two groups. which of the following statements is correct? select all that apply a) since random samples were used, the conclusion b) the sample size does not impact results of statistical significance. c) since the sample size is small , the conclusion is likely to be untrue. d) since the sample size of each group is greater than 10, the conclusion is likely to be true
Answer:
c
Step-by-step explanation:
I think this is right
Need help with this math. 13 points
Answer:The triangle is dilated by a factor of 1/2
Step-by-step explanation:
Answer:
a scale factor of 2
Step-by-step explanation:
is 3/5 equal to 60/100
Answer: yes 3/5 equal to 60/100
Step-by-step explanation:
The answer is it is because if you do
5 times 20 its 100
and 3 times 20 is 60
so what you do to the bottom you do to the top
so the answer is yes 3/5 equal to 60/100
Hope this helps :)
Answer:
Yes
Step-by-step explanation:
[tex]\frac{3}{5} and \frac{60}{100}[/tex] are equivalent fractions. Equivalent fractions are fractions that have the same value of decimal. so when you simplify 60/100 you will definitely get 3/5. And both of their's decimal is equal which is 0.6.
shirley had $50. When she bought 3 CDs and 1 calendar at $6, the change was $8. What is the price of 1 CD?
Answer: 12
Step-by-step explanation:
If you subtract 6 dollars from 50, you’ll get 44. 44 minus 12 three times is equal to 8
Answer:
$12
Step-by-step explanation:50-6
50-6-3(x)=8
44-3x=8
-3x=8-44
3x=36
36/3=12
What is the range of the function? Graph in link.
Answer: Option D: R = {3, 9, 12}
Step-by-step explanation:
The range of a function is the set of the possible outputs of a function:
if we have the function f(x) = y, the values of x are the domain, and the values of y are the range.
In the image, the set at the right is the output, so the set in the right is the range.
such that we have the pairs (-2,3) (2, 3) (3, 9) (4, 12)
So the range will be R = {3, 9, 12}
Which choice shows y = 2x + 2 and y= 2.1 correctly paired with their graphs?
Find the value of the trig function indicated.
cos A
Answer:
cosΘ = [tex]\frac{9}{15}[/tex]
Step-by-step explanation:
cosΘ = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{9}{15}[/tex]
The exact of the trigonometric function associated with the right triangle is cos θ = 3 / 5.
How to compute the exact value of a trigonometric function
In this question we have a right triangle, whose all side lengths are known and the exact value of a trigonometric function (cosine function) associated with an angle must be found:
cos θ = x / r
Where:
x - Leg adjacent to angle.r - HypotenuseIf we know that x = 9 and r = 15, then the exact value of the trigonometric function is:
cos θ = 9 / 15
cos θ = 3 / 5
To learn more on trigonometric functions: https://brainly.com/question/25618616
#SPJ6
what is the Greatest common factor for -8X²+ 24
Answer:
8
Step-by-step explanation:
[tex] - 8 {x}^{2} + 24 \\ = 8( - {x}^{2} + 3) \\ [/tex]
Answer:
8
Step-by-step explanation:
-8(x^2-3)
Anyone know this ????
Answer:
D
Step-by-step explanation:
cannot be determined without side lengths
Work out m and c for the line: y = 5 x − 7
Answer:
Step-by-step explanation:
y = mx + c
y = 5x - 7
Slope m = 5
y-intercept c = -7
Answer:
m = 5
c = -7
Step-by-step explanation:
the formula for a line is mx+c where m is the gradient and c is the intercept.
In this case:
m = 5
c = -7
Hope this helps
Good Luck
The answers
Alternate exterior angles
Corresponding angles
Same-side interior angles
Alternate interior angles
Answer:
alternate exterior angles
Step-by-step explanation:
so are 2 & 8
Solve for z.
–8z + 17 = –13 + 2z
z =
Answer:
[tex] \boxed{z = 3} [/tex]
Step-by-step explanation:
[tex] = > - 8z + 17 = - 13 + 2z \\ \\ = > - 8z - 2z + 17 = - 13 \\ \\ = > - 10z + 17 = - 13 \\ \\ = > - 10z = - 13 - 17 \\ \\ = > \cancel{-} 10z = \cancel{-} 30 \\ \\ = > 10z = 30 \\ \\ = > z = \frac{30}{10} \\ \\ = > z = 3[/tex]
Answer:
z = 3
Step-by-step explanation:
→Add 8z to both sides:
-8z + 17 = -13 + 2z
17 = -13 + 10z
→Add 13 to both sides:
30 = 10z
→Divide both sides by 10:
3 = z
HELP PLEASE AAAAAAAAAAA
Answer: last choice
In general if we have first term a[1] and common difference d, such that
a[n] = a[n-1] + d
then the explicit formula is
a[n] = a[1] + d(n-1)
First choice has d=-4 so needs a minus sign in the explicit formula.
Second choice has a=-100 so needs a negative sign for the 100.
Third choice swaps a[1] and d, oops.
IT IS D!!!!!!!!!!!!!!!!!!!!!!!!!!!
at which root does the graph of f(x)=(x+4)^6(x+7)^5 cross the x-axis ?
Answer:
-7
Step-by-step explanation:
The equation is simplified so there are two possible answers here, -4 and -7
There is a root where y = 0 and x = a number
At -4 and -7 y = 0
However at -4 the function bounces since the (x+4) is raised to the 6th power.
When you have an even power, the function bounces at the x-axis, and when you have an odd power the function goes through the x-axis.
Since you can only choose one answer, the logical answer would be -7.
At x = -7, y = 0 and the function crosses the x-axis.
At x = -4, y = 0 but the function bounces on the x-axis.
The logical answer here is -7.
The graph crosses the x-axis at x = -7
RootsThe roots of a function are the zeros of the function
The function of the graph is given as:
[tex]f(x) =(x+4)^6(x+7)^5[/tex]
EquationIn the above equation, the roots of the functions and their corresponding multiplicities are:
Root: -4, Multiplicity: 6Root: -7, Multiplicity: 5x-axisThe graph will cross the x-axis, when the multiplicity is odd
The root, -7 has an odd multiplicity.
Hence, the graph crosses the x-axis at x = -7
Read more about roots and multiplicities at:
https://brainly.com/question/2833285
Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!
Answer:
Opaca= 290kg Llama=160kg
Step-by-step explanation:
x+y=450
3x=190+y
Line segment AB was dilated to create line segment A'B'
using the dilation rule D2,0.15-
What is x, the distance between points A and A'?
2.4 units
4.8 units
13.6 units
14.4 units
Answer:
13.6
Step-by-step explanation:
The measure of the segment AQ is related to the measure of the segment A'Q by the dilation factor as follows:
dilation factor = A'Q/AQ
AQ = A'Q/dilation factor
Replacing with data:
AQ = 2.4/0.15 = 16
Then, the distance between points A and A' is
x = 16 - 2.4 = 13.6
How many vertices does a closed cone have?
Answer:
A closed cone has 0 verticals.. but 1 vertice
Step-by-step explanation:
Which of the following statements best describes theorems
Answer:
The answer to your question is the first option.
Step-by-step explanation:
4( 3x +5 ) - 3 = 9x -7 what is x?
Answer:
x = -8
Step-by-step explanation:
4( 3x +5 ) - 3 = 9x -7
Distribute
12x +20 -3 = 9x -7
Combine like terms
12x+17 = 9x-7
Subtract 9x from each side
12x-9x +17 = 9x-9x-7
3x +17 = -7
Subtract 17 from each side
3x+17-17 = -7-17
3x = -24
Divide each side by 3
3x/3 = -24/3
x = -8
Answer: x= -8
Step-by-step explanation:
4 ( 3x + 5 ) - 3 = 9x - 7
12x + 20 - 3 = 9x - 7
12x + 17 = 9x - 7
subtract 9x from both sides
12x + 17 - 9x = -7
3x + 17 = -7
subtract 17 from both sides
3x= -7-17
3x= -24
divide both sides by 3
x= -24/3
simplify
x= -8
A potato was launched in the air using a potato gun. The function for the situation was h(t)=-16t^2 +100t+10, where t was the time in seconds and h is the height in ft. What was the maximum height? What was the lowest height of the potato? What was the lowest times that applies to the actual situation? What is the greatest time that applied to the situation? What are the domain and range of the function using set builder notation?
Answer:
The height equation is:
h(t)=-16t^2 +100t+10
A) To find the maximum height, we must find the time where the velocity is 0, so we must derive it with respect to the time.
v(t) = -2*16*t + 100 = 0
t = 100/(2*16) = 3.125s
Now we put this time in our height equation:
h(3.125s) = -16*3.125^2 + 100*3.125 + 10 = 166.25 ft.
B) The lowest heigth of the potato will be h = 0ft, when the potato hits the ground.
C) the lowest time that works for that function is t = 0s, when the potato is fired by the gun.
D) the maximum time can be finded when the potato hits the ground, afther that point the equation does not work anymore, let's find it,
h(t) = 0 = -16t^2 +100t+10
we can solve it using Bhaskara's equation:
[tex]t = \frac{-100 +- \sqrt{100^2 +4*16*10} }{-2*16} = \frac{-100 +- 103.2}{-32}[/tex]
So the two solutions are:
t = 6.3s
t = -0.1s
We need to chose the positive time, as we already discused that the minimum time that works for the equation is t = 0s.
so here the answer is t = 6.3s
E) the domain is 0s ≤ t ≤ 6.3s
The range is 0ft ≤ h ≤ 166.25 ft.
PLZ HELP! Joel rolls two fair number cubes at the same time. What is the probability that the sum of the numbers will be odd or less than 4? Show your work.
Answer:
Joel rolls two fair number cubes at the same time.
Each cube has six sides 1, 2, 3, 4, 5, 6
=> There are 6 x 6 = 36 possible pairs (or 36 possible sums)
The collection of pairs that have sum less than 4 includes (1, 2), (2, 1) and (1, 1) => 3 cases (*)
The sum that is odd when two cubes show one odd number and one even number. Therefore each side of first cube has 3 options from second cube to form an odd sum. => The total number of cases: 6 x 3 = 18 cases
In these 18 cases, there are two cases (1, 2) and (2, 1) which have been counted already at (*) => Total case that the sum of the numbers will be odd or less than 4: T = 3 + 18 - 2 = 19 cases
=> Probability that the sum of the numbers will be odd or less than 4:
P = 19/36 = 0.53
Hope this helps!
:)
A student pulls a box of mass 5 kg with a force of
20 N through a horizontal distance of 2.5 m. Calculate the
work done by the student.
Answer:
50j
Step-by-step explanation:
workdone = force x distance
workdone = 20x2.5
50j
Been struggling with this question can someone help?
Answer:
a and b
Step-by-step explanation:
............. ...... ..
Answer:
The answer is B
Step-by-step explanation:
[tex]\frac{x}{4}=16\\\mathrm{Multiply\:both\:sides\:by\:}4\\\frac{4x}{4}=16\cdot \:4\\\mathrm{Simplify}\\x=64[/tex]
Grace is making lemonade. The directions say to mix 7 cups of water with 3 scoops of powdered lemonade mix. How many cups of water should she use with 6 scoops of fruit mix?
Answer:
You need 14 cups of water for 6 scoops of drink mix since it is simply double the amount of scoops
Step-by-step explanation:
(1) 7 cups water/ 3 scoops mix=7/3
(2) x cups water/6 scoops mix=x/6
(3) 7/3=x/6
(4) 42/3=x
4(2v-6)-12v
Topic Name
Using distribution and combining like terms to simplify: Univariate
Answer:
-24+4v
Step-by-step explanation:
8v-24-12v
-24+4v
Point Y is on XZ. YZ=5.2 and XZ=12.5. What is XY?
Answer:
XY = 7.3
Step-by-step explanation:
? 5.2
X ------------------------Y---------------Z
|<----------------12.5------------------->|
XZ = 12.5
YZ = 5.2
XY + 5.2 = 12.5
XY = 12.5 - 5.2
XY = 7.3
Given the following exponential function identify weather the change represents growth or decay and determine the percentage rate of increase or decrease y=550(0.97)x
Answer:
The exponential function is that of decay
The percentage decrease is by 3%
Step-by-step explanation:
The exponential equation we are considering is;
y = 550(0.97)^x
Now to know if it’s decay or growth, we shall be considering what we have in the bracket
Mathematically, we can express 0.97 as follows
0.97 = 1-0.03
So what does this means? There is a decrease in subsequent values from one value of y to another.
This means that the equation is for decay as what the term raised to an exponent is less than 1.
Now we want to determine the percentage rate of increase or decrease
What we need to do is to represent the 0.03 difference in fraction
That would be 3/100
So this means that the percentage decrease is by 3%
Easy question for y’all math ppl, easy points. Question in photo
Answer:
a
Step-by-step explanation:
it can be solved
Answer:
C.
Step-by-step explanation:
For what values of the variable is the rational expression undefined?
5x +4/ x2-1
Answer:
When x = 1 or -1.
Step-by-step explanation:
When the denominator x^2-1 is zero the expression is undefined.
So the values of x cannot be 1 or -1.
I need help :( I don’t understand :(
Answer:
B. 2
Step-by-step explanation:
f(2) means the value of y when x = 2.
Look in the graph. Start at (0, 0), which is the point where the x-axis and the y-axis intersect. Now go 2 units to the right. That is where x = 2. Go up from there until you get to the red curve and stop. Now look to the left to see at what y-value you are. It is 2 on the y-axis. Since at x = 2, y = 2, then
f(2) = 2