Answer:
we can conclude that there is significant evidence that there is convincing evidence that the average attention span for teenage boys is more than 5 minutes
Step-by-step explanation:
H0 : μ ≤ 5
H1 : μ > 5
Sample mean, xbar = 6.2
Sample Standard deviation, s = 2.1
Sample size, n = 80
The test statistic :
(xbar - μ) ÷ (s/sqrt(n))
(6.2 - 5) ÷ (2.1 / sqrt(80))
1.2 ÷ 0.2347871
Test statistic = 5.1110133
Testing with α = 0.05
Using Pvalue from a test score calculator :
Pvalue = < 0.00001
0.00001 < 0.05
Since,
Pvalue < α ; We reject H0
Hence, we can conclude that there is significant evidence that there is convincing evidence that the average attention span for teenage boys is more than 5 minutes.
HELP PLS MIGHT GIVE BRAINLIST BUT ONLY IF 2 PEOPLE ANSWER!
30x+40 using the gcf
Find y to the nearest hundredths place
Answer:
I cant see the picture
Step-by-step explanation:
46.8/0.156
Show work
Answer:
300
Step-by-step explanation:
What is the square root of -1?
Answer:
i
Step-by-step explanation:
i stands of imaginary because no real numbers are negative
Yolanda created a scatter plot of the relationship between the number of times she visited different friends each month, y, and the distance in miles of the friends from her home, x. She calculated the equation of the trend line to be y = −3.5x + 20. Use this information to predict the number of times in one month Yolanda would visit a friend who is 4 miles from her home.
Answer:
6 times
Step-by-step explanation:
y = −3.5x + 20 ; x = 4
y = -3.5(4) + 20
y = -14 + 20
y = 6
Simplify: 2(x+6) show work please
Answer:
2x + 12
Step-by-step explanation:
2(x + 6) =
2(x) + 2(6) =
2x + 12
Hope that helps!
Answer:
2x+12 by distributing
2x=-12
x=-6
Triangle ABC is similar to triangle DEC. What is the length of DE?
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 5.25
Explanation:
first find total length of BC, which is 16
Then you do 7/16 which is the scaling proportion.
Then you do 12 x 7/16 = 5.25
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Can you help me on question 14?!
Answer:
the answer isssssssssssssss b
Answer:
A) 2³
Step-by-step explanation:
2³
2 x 2 x 2 = 8
Need Help (WILL GIVE BRAINLIEST)
Answer:
A
Step-by-step explanation:
(y-5) / (7-5) = (x-1) / (2-1)
(y-5) / 2 = x-1
y-5 = 2x -2
y = 2x +3
Suppose that a particular function f satisfies
f′′(x)=24x2+12x−4, f(0)=−4, f′(0)=1.
Then we must have
f(x)=
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
In two or more complete senteces compare the number of x-intercepts in the graph of f(x)=x^2 to the number of x-intercepts in the graph of g(x)=x^2-7. Be sure to include the transformation that occured between the parent function f(x) and its image g(x)
Answer:
Step-by-step explanation:
f(x) = x² is an up-opening parabola with vertex (0,0). There is one x-intercept, and that is the vertex.
g(x) = x²-7 is the equivalent to f(x) shifted down 7 units. Since the vertex is below the x-axis and the parabola opens upwards, it intercepts the x-axis at two points.
Find the value of x in the circle.
Answer:
34
Step-by-step explanation:
I REALLY NEED HELP PLEASE!!
Answer:
it's a
Step-by-step explanation:
What is the area of this figure?
Answer:
area = 400 in²
Step-by-step explanation:
parallelogram area = 20 x 16 = 320
triangle area = 1/2(20)(8) = 80
320 + 80 = 400 in²
helppppppppppppppppppppp
If each side of the prism is three times longer, what is the volume of that prism
Answer:
1620 m³
Step-by-step explanation:
To find the answer, we simply have to multiply the three values by three, and then multiply those new values together. 5 x 3 = 15, 4 x 3 = 12, 3 x 3 = 9, Multiply 15 x 12 x 9 and you get 1620.
(P.S. Make sure you put meters cubed [m³]! Some teachers are very picky about that.)
The two figures are similar. Solve for x/ plz I need help
Answer:
23
Step-by-step explanation:
Each model below is divided into sections of equal size Which model does Not have 75% of the total area shaded
Answer:
G
f is 6/8=3/4 = 75%
h is 9/12=3/4 = 75%
I is 3/4 = 75%
so the answer is G
classify the following based on sides and angles.
Answer:
D. right; scalene
Step-by-step explanation:
As you can see in the diagram you have a 90, 50, and 40 degrees angles. Because one of the angles is equal to 90 degrees (a right angle) this triangle can be classified as a right triangle.
No congruent sides are shown.... That means it's a scalene.
HELP ASAP I'm trying to go to the mall todayy
Answer:
[tex]\pi \: d[/tex]
Step-by-step explanation:
the circumference is equal to pi times diameter
Find the distance between the points A and B given below.
(That is, find the length of the segment connecting A and B.)
Round your answer to the nearest hundredth.
Step-by-step explanation:
Horizontal it is 4
Vertical it is 2
Use of Pythagoras theorem to find AB
AB= root of 4^2 + 2^2
= 4.47
The points= (3,2) and (7,5)
Distance =
[tex] \sqrt{ ({x}^{2} - x {}^{1} ) {}^{2} + ({ y}^{2} - y {}^{1} ) {}^{2} } [/tex]
=
[tex] \sqrt({4} - 9) {}^{2} + (5 - 7) {}^{2} [/tex]
=
[tex] \sqrt{25 + 4} [/tex]
=
[tex] \sqrt{29} [/tex]
[tex]5.39[/tex]
5.39 is the answer
what is the name of the shape??
Answer:
Step-by-step explanation:
It’s a parallelogram
Answer:
I believe that is a parallelogram
Step-by-step explanation:
Find the area of a triangle ABC when m is less than C = 14 degrees, a = 5.7 miles, and b = 9.3 miles.
Answer:
[tex]Area =6.41mi^2[/tex]
Step-by-step explanation:
Given
[tex]a = 5.7[/tex]
[tex]b = 9.3[/tex]
[tex]c = 14^\circ[/tex]
Required
The area of the triangle
This is calculated as:
[tex]Area =\frac{1}{2}* a * b * sin(c)[/tex]
So:
[tex]Area =\frac{1}{2}* 5.7 * 9.3 * sin(14)[/tex]
[tex]Area =\frac{1}{2}* 5.7 * 9.3 * 0.2419[/tex]
[tex]Area =6.41mi^2[/tex]
Answer:
The answer is 6.41!
Step-by-step explanation:
I took the test and this is correct
P.S 26 is not the answer I tried it I need help :(
Answer:
52.........................
Answer:
A
Step-by-step explanation:
(2x + 6)° = 32°.........(Alternate angles are equal)
2x° = 32°- 6°
2x° = 26°
x. = 26 ÷ 2
x. =. 13°
PLEASE GIVE BRAINLIEST....
which point is 8 units away from ( 7, 5 ) ?
Answer:
C ( 7, -3 )
Step-by-step explanation:
Question:
which point is 8 units away from ( 7, 5 ) ?
Choices:
A : (0,-3 )B (15,13) C ( 7, -3 ) D ( 1, 5 )
Solution:
(7, 5) and (7, 3) have the same x-coordinate, 7.
They are both on a vertical line that passes through point (7, 0).
(7, 5) is 5 units above the x-axis.
(7, -3) is 3 units below the x-axis.
5 + 3 = 8
(7, 5) and (7, 3) are 8 units apart.
Answer: C ( 7, -3 )
George worked on his science project for 5/12 hours on monday and 3/4 hour on tuesday. How much longer on tuesday did georege than on monday
Answer:
2/8 hours
Step-by-step explanation:
Plz give me brainlyist
What is the value of the expression 1/2x2/5 ÷2/6
Answer: 3/5 (0.6 decimal form)
Step-by-step explanation:
PLEASE HELP!!
Find the lateral area of this cone. Leave your answer in terms of pi.
25 cm
8 cm
Answer:
200
Step-by-step explanation:
pi · radius · height
3.14 · 8 · 25 = 200
extra : i used symbolab.com :)
Hillary is choosing a notebook. She can have a three-ring or two-ring binder in red, blue, green, or striped, with or without interior pockets. How many combinations of notebooks does she have? Solve step by step.
Answer:
Step-by-step explanation: