Answers
hope this helps<3
Related Questions
WILL GIVE BRAINLIEST TO PERSON WHO ANSWERS CORRECTLY!!!!! PLEASE HELP ME!!!!!!
A specialty ice cream manufacturer collected data for the number of ice creams sold each day and the temperature on that day. The data was displayed in the following table.
Ice Creams Sold - 34, 39, 40, 36, 46, 47, 54, 27, 31, 56
Temperature (in °F) - 71.0, 73.8, 74.9, 71.4, 75.0, 76.9, 79.4, 68.6, 70.0, 81.4
What is the best interpretation of the correlation coefficient between the temperature and the number of ice creams sold?
* Because the correlation coefficient is close to -1, the ice cream sales decrease markedly with a rise in temperature.
* Because the correlation coefficient is close to 1, the ice cream sales increase markedly with a rise in temperature.
* Because the correlation coefficient is close to 1, the ice cream sales increase vaguely with a rise in temperature.
* Because the correlation coefficient is close to 0, the ice cream sales decrease vaguely with a rise in temperature.
Answers
S:[34, 39, 40, 36, 46, 47, 54, 27, 31, 56]
T:[71.0, 73.8, 74.9, 71.4, 75.0, 76.9, 79.4, 68.6, 70.0, 81.4]
n=10 = number of observations in each list.
We need the correlation coefficient ρ to select the right choice of answers.
We first calculate the mean μ and standard deviation σ of each list
[tex]\mu_s=\sum_{i=1}^{10}S_i=41.0[/tex]
[tex]\sigma^2_s=\sum_{i=1}^{10}(S_i-\mu_s)^2/n=83[/tex]
[tex]\sigma_s=\sqrt{\sigma^2_s}=\sqrt{83}=9.1104[/tex]
[tex]\mu_t=\sum_{i=1}^{10}T_i=74.24[/tex]
[tex]\sigma^2_t=\sum_{i=1}^{10}(T_i-\mu_t)^2/n=15.4524[/tex]
[tex]\sigma_t=\sqrt{\sigma^2_t}=\sqrt{15.4524}=3.9310[/tex]
We are now ready to calculate the correlation coefficient ρ :
[tex]\rho=\frac{E[(S-\mu_s)(T-\mu_t)]}{\sigma_s*\sigma_t}[/tex]
[tex]=\frac{\sum_{i=1}^{n}[(S_i-\mu_s)(T_i-\mu_t)]/n}{\sigma_s*\sigma_t}[/tex]
[tex]=\frac{\sum_{i=1}^{n}[(S_i-\mu_s)(T_i-\mu_t)]/n}{9.1104*3.9310}[/tex]
[tex]=\frac{35.27}{35.8127}[/tex]=0.9848
Because the correlation coefficient, ρ , is close to one, the ice cream sales increase markedly with a rise in temperature.
Note:
a correlation close to 1 means both increase (or decrease)
a correlation close to -1 means one increases while the other decreases
correlation close to 0 means one does not quite affect the other.
What is the definition of a circle?
A circle is a set of all points that are the same distance form a fixed point called the center.
A circle is the set of all points in a plane that are the same distance from a fixed point called the center.
A circle is the distance from a set of points to a fixed point called the center.
A circle is the set of all points in a plane that are a given distance from a given line.
Answers
Answer:
A circle is the set of all points in a plane that are the same distance from a fixed point called the center.
Step-by-step explanation:
see picture
Circle can be defined as a set of all points in a plane that are the same distance from a fixed point called the center.
What is a circle?A circle has defined the set of all points in a plane that are the same distance from a fixed point called the center. The circle is a 2D shape.
In geometry, the circle is defined as the closed 2-dimensional curved shape. The distance from between the center of the circle to any point on the circle is known as the radius of the circle.
As we have discussed the definition of a circle, therefore, the correct option is 'A circle is the set of all points in a plane that are the same distance from a fixed point called the center.'
Learn more about Circle:
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helppppppppppppppppppppppppppppppppp
Answers
The third choice is the correct one
Explanation:
Square root means that what is under the root has power of 1/2
8 = 4 * 2
Therefore:
√8 = √4 * √2 = 2√2
The given expression:
(8 * x^7 * y*8)^1/2 = (8)^1/2 * (x^7)^1/2 * (y^8)^1/2
= 2√2 * x^7/2 * y^4
= 2√2 * x^3 * y^4 * √x
= 2* x^3 * y^4 √2x
Hope this helps :)
If two figures are congruent, their perimeters are equal true or false?
Answers
The graph below shows the height of a kicked soccer ball f(x), in feet, depending on the distance from the kicker x, in feet: Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the distance and height? (6 points) Part B: What is an approximate average rate of change of the graph from x = 22 to x = 26, and what does this rate represent? (4 points
Answers
the complete question in the attached figure
part A
the x intercept 0 is the point where the ball was hit, the x intercept 20 is the point where the ball fell back to the ground, 20 feet away from the kicker.
the function is increasing in the interval x∈(0, 10) and decreasing in x∈(10, 20)
this means that the height is increasing in the interval (0, 10) and decreasing as x goes through the interval (10,20)
the distance from the kicker is increasing during the whole interval (0, 20)
part B
the rate of change represents the slope of the secant line from A to B. It approximates the rate at which f(x) decreases or increases in the interval
x =[A, B]
Jake carries a green and yellow and a black guitar pick in his pocket he randomly chooses a guitar pick from his pocket before every concert what is the probability will he select the same color pic for two concert in a row?
Answers
Answer:
[tex]\bf\textbf{The required probability = }\frac{4}{9}[/tex]
Step-by-step explanation:
The total number of ways that he can pick a pic are 3 × 3 × 3 = 27 ways
If Jake selects the black pic in the first concert, then number of ways of success are :
B B G
B B Y
B G G
B Y Y
Total number of success = 4
If Jake selects the green pic in the first concert, then number of ways of success are :
G G B
G G Y
G B B
G Y Y
Total number of success = 4
If Jake selects the yellow pic in the first concert, then number of ways of success are :
Y Y B
Y Y G
Y B B
Y G G
Total number of success = 4
Therefore, in all the three cases total number of successes are :
4 + 4 + 4 = 12
[tex]Probability = \frac{\text{Number of successful ways}}{\text{Total number of ways}}\\\\\implies Probability = \frac{12}{27}=\frac{4}{9}[/tex]
[tex]\bf\textbf{Hence, The required probability = }\frac{4}{9}[/tex]
Answer:
For the people coming for the iready question answer, the answer is 1/3 lol
Step-by-step explanation:
Carolyn has cut a piece of ribbon 29 centimeters long from a roll. which instrument would she use to measure the length of the piece of ribbon?
Answers
Final answer:
Carolyn would use a ruler to measure the length of the piece of ribbon.
Explanation:
To measure the length of a piece of ribbon, Carolyn would use a ruler as the instrument. A ruler is a tool used for measuring small items and distances. It is commonly used for measuring in inches, which is the appropriate unit for short lengths like a piece of ribbon. Carolyn can align one end of the ribbon with the zero mark on the ruler and then extend the ribbon along the ruler to measure its length accurately.
The ruler's precision in measuring small distances, typically in inches, allows Carolyn to obtain a detailed and accurate measurement for the ribbon's length. Aligning the ribbon's end with the ruler's zero mark ensures a standardized starting point for consistency in measurements. This straightforward method showcases the practicality and ease with which rulers facilitate precise length measurements, making them essential tools for tasks requiring accuracy in determining dimensions.
In the diagram a || b. Use the diagram to answer the question. (Diagram not to scale.) Name the interior angle to 7
A. 1
B. 2
C. 6
D. 4
Answers
Solve the following equation. Then place the correct number in the box provided. 9(x - 6) = 8(x + 6)
x=
Answers
9(x - 6) = 8(x + 6)
The first step to take here is to apply the Distributive Property, which is
a(b + c) = ab + ac.
9(x - 6) = 8(x + 6)
9x - 54 = 8x + 48
After this, you want to begin to eliminate terms to ultimately isolate x; you can subtract 8x from both sides first:
9x - 54 = 8x + 48
x - 54 = 48
Finally, add 54 to both sides to get x by itself:
x - 54 = 48
x = 102
Answer:
x = 102
9(x -6) = 8(x+6)
9x - 54= 8x +48
x- 54= 48
x= 102
which of the following choices describe the bases of a cylinder? check all that apply.
a. discs
b. parallel
c. similar
d. congruent
Answers
Answer:
all apply
Step-by-step explanation:
All of the given descriptors apply. The bases of a cylinder are congruent parallel discs. Congruent figures are also similar.
Answer:
a,b,d
Step-by-step explanation:
A photographer enlarges a photo by using a scale of 5. The length of the original photo is 7 in. What is the length of the enlarged photo? Enter your answer in the box.
Answers
Answer:
35
Step-by-step explanation:
35
Carly has 5 times as many markers as camden.Toegether they have 30 markers.How many markers does Carly have? How many markers does Camden have
Answers
5x6=30
Answer:
number of markers Camden has = [tex]5[/tex]
number of markers Carly has = [tex] 25[/tex]
Step-by-step explanation:
Let the number of markers Camden has = x
now it is given that Carly has 5 times as many markers as Camden has
Number of markers Carly has = 5 ( number of markers Camden has )
= [tex]5x[/tex]
now the total number of markers = 30
number of markers with Carly + number of markers with Camden = 30
so we have
[tex]5x+x = 30[/tex]
[tex]6x =30[/tex] ( adding like terms x and 5x)
[tex]x=\frac{30}{6}[/tex] ( dividing both sides by 6)
[tex]x= 5[/tex]
hence we have
number of markers Camden has = [tex]x=5[/tex]
number of markers Carly has = [tex]5x= 5(5) = 25[/tex]
A pillow that usually costs $20 is marked down 45%. Table Use the table to find the new price of the pillow. $9 $11 $29 $33
Answers
Answer:
$11
Step-by-step explanation:
20-9=11
(4 + y = 19) what is y
Answers
y = 19 - 4
y = 15
If s = 1 over 3 unit and A = 54s2, what is the value of A, in square units? ____ square units. (Input whole number only.)
Answers
Ellen is drawing two polygons. One of tue polygons has 3 more angles than the other. What shapes could she be drawing?
Answers
Polygon- A shape with at least three straight sides.
Triangle and a Hexagon is what I recommend
Hope this helps:D
Have a great rest of a brainly day!
"AB84"
Answer:
Pentagon and an OCTAGON
Step-by-step explanation:
Polygons are are plane figures with three or more sides. Since plane figures with 3sides are triangles and those with 4sides are quadrilaterals, I will take a plane figure of 5sides as one of the two polygons Ellen is drawing
A plane figure with 5sides and 5angles is a PENTAGON
If one of the polygons has 3 more angles than the other, then the other polygon she is drawing was a polygon with (5+3) i.e 8sides and 8angles. This polygon is known as an OCTAGON
Based on the conclusion, the shape Ellen could be drawing is a PENTAGON and an OCTAGON
Write an algebraic expression for the verbal description. the sum of two consecutive natural numbers, the first of which is n
Answers
n + (n + 1)
hope this helps
If the first number is n and the second number is n+1, then you are writing [tex]n+(n+1)=2n+1[/tex].
A toy rocket is launched from a platform 42 feet above the ground at a speed of 91 feet per second. The height of the rocket in feet is given by the polynomial −16t^2 + 91t + 42, where t is the time in seconds. How high will the rocket be after 3 seconds? HELP ASAP!!
A. 122 feetB. 218 feetC. 93 feetD. 2570 feet
Answers
height = -16t² + 91t + 42
After 3 sec means, t = 3, so we substitute t with 3
H = -16(3)² + 91(3) + 42
= -144 + 273 + 42
= 171 feet
The height of the rocket after 3 seconds is 171 feet.
What is a function?A function is defined as a relation between the set of inputs having exactly one output each.
The height = -16t² + 91t + 42
After 3 sec means, t = 3, so we substitute t with 3
In order to find the height of the rocket after t seconds we plugin t = 3 in the function.
height H = -16t² + 91t + 42
H = -16(3)² + 91(3) + 42
= -144 + 273 + 42
= 171 feet
Thus, the height of the rocket after 3 seconds = 171 feet.
Learn more about function here:
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How much will it cost to mail a first-class letter that weighs 3.7 oz? The rate is $.22 for the first ounce and $.17 for each additional ounce or fraction of an ounce. a. $.81 b. $.73 c. $.63 d. $.07
Answers
3.7 ounces minus the first ounce = 2.7 ounces
2.7 ounces x $.17/ounce = $0.459 = $0.46
$0.46 (the rate for 2.7 ounces + $0.22 (the rate for the first ounce) = $0.68
If p(q-r)x^2 +q(r-p)x + r(p-q) has equal roots,then, 2/q=??
a)p+ 1/r c)p+r
b) 1/p +r d) 1/p + 1/r
Answers
Solution to this is,
[r(p-q)/p(q-r)]=1
pr-qr=pq-pr
2pr=pq+qr
2pr/pqr=(pq+qr)/pqr
2/q=1/r+1/p
Convert 1/ 3 to a fraction with denominator of 9
Answers
1 x 3 = 3
3 x 3 = 9
3/9
[tex]\frac{1}{9}[/tex] is the new fraction after converting or expanding the given fraction [tex]\frac{1}{3}[/tex] with the denominator 9.
Expanding a fraction:Expanding a fraction means making it "bigger".
How we expand a fraction?We can expand a fraction by multiplying the numerator and denominator with the same number.
According to the given question we have a fraction [tex]\frac{1}{3}[/tex].
Since, we have to convert or expand the given fraction with the denominator 9.
We know that 3× 3 = 9.
So, multiply the numerator and the denominator of the given fraction by 3.
⇒ [tex]\frac{(1 )(3)}{(3)(3)} = \frac{1}{9}[/tex]
Hence, we have converted or expanded the fraction [tex]\frac{1}{3}[/tex] with the denominator of 9.
Learn more about expanding the fraction here:
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y+2=−2(x−3)
Slope from equation
Problem
What is the slope of the line?
Answers
y = -2x + 4
The slope of the line is -2.
Please find below the given equation-
y + 2 = -2 ( x - 3 )
y + 2 = -2 x - 2(- 3)
y + 2 = -2 x + 6
y = -2 x + 6 - 2
y = -2 x + 4
Let's compare this equation with the form y = mx +c
By comparing we get,
m = -2 and c = 4
We know, in y = mx + c , slope of the line is given by m
Here m = -2, as discussed above
Therefore the slope of the given line is -2
Hope it helps ..!!
Are the two triangles congruent?
Answers
First: The 7 must be opposite the same size angle in both triangles for conguency.
Second: It does not look like these triangles have any angles in common.
The age of a father is 2 less than 7 times the age of his son. In 3 years, the sum of their ages will be 52. If the son age is s years, which equation models this situation?
a. (s+3)+[(7s-2)+3}=52
b. 3s+3+3(7s-2)= 52
c. s+(7s-2)=52
d. (s-3)+(7s-2)-3=52
Answers
the age of the son: s
the age of the father is 2 less than 7 times the age of his son: 7s - 2
In 3 years, the sum of their ages will be 52,
In 3 years, the age of the sun will increase 3, so s+3. Also, the age of his father also increase 3, (7s - 2) + 3
(s+3) + [(7s-2) + 3] = 52 is the equation.
On a map, 1.5 centimeters represents a distance of 45 kilometers. If two points on the map are 0.8 centimeters apart, what is the actual distance between the two points?
Answers
centimeters / kilometers
1.5 / 45 = 0.8 / x
cross multiply
(1.5 * x ) = (45 * 0.8)
1.5x = 36
divide both sides by 1.5
x = 24
The actual distance between the two points is 24 kilometers.
Hope this helps
Jessica has $4 left in her pocket. She spent $7 on a ticket to a baseball game, $2 on a hot dog, and $11 on a hat. How much money did she have at the beginning of the day?
Answers
4 + 7 + 2 + 11 = 24
Jessica had $24 at the beginning of the day.
Answer:
Money Jessica had at the beginning of the day was:
$24
Step-by-step explanation:
Let Jessica had $x in the beginning of the day.
She spent $7 on a ticket to a baseball game, $2 on a hot dog, and $11 on a hat and left with $4
⇒ x=7+2+11+4
⇒ x=24
Hence, money Jessica had at the beginning of the day was:
$24
WILL GIVE A BRAINLEST
What is the solution of x+4/2x-1<0 ?
Answers
To solve the inequality x + 4/2x - 1 < 0, first find the critical value x = 1/2. Then, test the intervals to determine the solution set x < 1/2.
To find the solution of the inequality x + 4/2x - 1 < 0, we can follow these steps:
First, find the critical values by setting the denominator, 2x - 1, equal to zero and solve for x. The critical value is x = 1/2.
Next, test the intervals created by the critical value in the original inequality x + 4/2x - 1 < 0. This helps determine the solution set which is x < 1/2.
Part 1.] Identify the following series as arithmetic, geometric, both, or neither. Includes picture
Part 2.] Evaluate C(3, 3)
A.] 1
B.] 6
C.] 24
Part 3.] Evaluate C(6,3)
A.] 20
B.] 120
C.] 720
Part 4.] How many subsets of four elements each exist in a set of seven elements?
A.] 4!
B.] C(7, 4)
C.] P(7, 4)
Part 5.] What is the probability of having 3 children that are all boys?
A.] [tex] \frac{1}{2} [/tex]
B.] [tex] \frac{1}{8} [/tex]
C.] [tex] \frac{3}{8} [/tex]
Answers
Part 1.] Identify the following series as arithmetic, geometric, both, or neither. Includes picture
Answer: arithmetic
Justification:
The arithmetic series are those in which the distance (difference) between any consecutive terms is constant, so you can find the term An adding the difference to the previous term, A(n-1).
In this case the series is:
∞
∑ (3 + na) =>
n=1
Term1: 3 + a
Term2: 3 + 2a
Term3: 3 + 3a
Term3: 3 + 4a
As you see, the difference between two consecutive terms is a, which shows that it is an arithmetic series.
Part 2.] Evaluate C(3, 3)
A.] 1
B.] 6
C.] 24
Answer: option A) 1.
Explanation:
The formula for combinations is Cm,n = m! / [n! (m - n)! ]
So, for C3,3, C3,3 = 3! / [3! 0!] = 3! / 3! = 1.
From this you might learn that Cm,m for any m is always 1.
Part 3.] Evaluate C(6,3)
A.] 20
B.] 120
C.] 720
Answer: option A) 20
Explanation:
Use the same formula, Cm,n = m! / [n! (m - n)! ]
C6,3 = 6! / [3! 3! ] = 6*5*4 / (3*2*1) = 5*4 = 20
Part 4.] How many subsets of four elements each exist in a set of seven elements?
A.] 4!
B.] C(7, 4)
C.] P(7, 4)
Answer: option B) C(7,4)
Explanation
You have to select collections of 4 elements from a set of 7 elements, and must realize that the order is irrelevant, i.e. it is the same the set ABCD as the set ACBD or DCAB or any combination of those four elements. So, the answer is a combination and not a permutation.
The number of subsets of 4 elements that you can form with 7 elements is: C(7,4), which is the option B.
Part 5.] What is the probability of having 3 children that are all boys?
A.] 1/2
B.] 1/8
C.] 3/8
Answer: option B: 1/8
Explanation:
The number of possible outcomes is 2 * 2 * 2 = 8
Only one of those outcomes is for all boys = 1
Therefore the probability is 1/8
You can see that representing the possible outcomes using B for boys and G for girls:
1) BBB (three boys)
2) BBG
3) BGB
4) BGG
5) GBB
6) GBG
7) GGB
8) GGG
Those are the 8 possible outcomes and as seen only one is for 3 boys.
equation that passes through the points (-1,0)(0,2)
Answers
2. Plug the slope you found in step 1, one of the given points, and plug both into the point-slope formula.
The point-slope formula is:
y - y_1 = m(x - x_1)
3. Solve the point-slope formula for y.
Your final answer must be in the form
y = mx + b
if you pay $26.50 for an item, including 6% sales tax, what was the original price?
Answers
26.5/1.06 = 25.00 dollars. You can check this by figuring out the sales tax separately
25 * (6/100) = 1.50
If you add 1.50 to 25 dollars, you get 26.5 just as you should.