a music teacher gathered data from several clarinet players about the time they spent practicing their instruments and the number of errors they made on a performance assessment. the data and the line of the best fit are shown in the scatter plot
Answer:
The answer is A. Yes, because the points in the plot are all very close to the line, which indicates a strong association.
Step-by-step explanation:
plouto answer
Answer:
Yes, because the points in the plot are all very close to the line, which indicates a strong association.
Step-by-step explanation:
When the points in a scatter plot are very close to the line of best fit, there is a strong association between the two variables and the line of best fit can be expected to make reliable predictions.
So, yes, the line of best fit could be used to make reasonable predictions, because the points in the plot are all very close to the line, which indicates a strong association.
−4p + 9 = −5
what is the answer
Answer:
p = -1
Step-by-step explanation:
-5 - -9 = 4
-4p/4 = -1
p = -1
4 Gears A and B turn together. Gear A turns 20 times when
Gear B turns 30 times. When Gear A turns 60 times,
how many times does Gear B turn? Show your work
Answer:
90 turnsStep-by-step explanation:
Ratio of turns
A/B = 20/30 = 2/3If A = 60 then the ratio is
60/B = 2/3 ⇒ B = 60*3/2 = 90
A factor divides evenly into another number without a ________ left over.
Answer: remainder
Step-by-step explanation:
Half of the difference of 3 and 1
Answer: 1
Step-by-step explanation:
If x is positive and x^2 = 729, what is the value of x? Please help
Answer:
X= 27
Step-by-step explanation:
Square root both sides
x = + or - 27
but since it’s positive x=27
If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(–2)? –196 –168 22 78
Answer: Hey buddy it's -168 or B. Hope that helps.
Step-by-step explanation:
edge 2020
The value of (fog)(-2) is -292
What is a composite function ?A composite function is a combination of two or more than two functions where the output of the previous function is the input to the next function.
Given
f(x) = 8 - 10x and g(x) = 5x + 4
To find
(fog)(x) where x = - 2
First we will find (fog)(x)
putting the value of g(x) in f(x)
(fog)(x) = 8 - 10(5x + 40)
= 8 - 50x - 400
= -50x - 392
(fog)(-2) = -50(-2) - 392
= 100 -392
= -292
Learn more about Composite functions here:
https://brainly.com/question/20379727
#SPJ6
hellllllp
awarding brainllest and +100 points
Answer: -45/4 = -11 1/4
I NEED HELP WITH THIS!!
A movie theater used y=1.83x to calculate how much money they made selling buckets of popcorn where y is the total and k is the price per bucket. How much would they make if they sold 8 buckets?
Group of answer choices
$10.98
$16.47
$12.81
$14.64
$14.64
Step-by-step explanation:
Am I right or wrong
The temperature was 4 degrees below zero at 9 AM, By 6 PM, the
temperature had risen 24 degrees. What was the temperature at 6 P.M.?
The length of the base of an isosceles triangle is x. The length of a leg is 2x-6 The perimeter of the triangle is 23. Find x.
Answer: 2.20
Step-by-step explanation:
An isosceles triangle has two of its side equal. Since the length of of a leg is 2x-6, it means that the other length is also 2x-6 while the base is x.
We the add the sides together. This will be:
x + 2x - 6 + 2x - 6 = 23
5x - 12 = 23
5x = 23 - 12
5x = 11
x = 11/5
x = 2.20
ehelp help help help help
Answer:
The ratio of red to green crayons is 18 to 24 which can be reduced to 3 to 4.
Step-by-step explanation:
Find JL using the perpendicular or angle bisector method.
Devaughn's age is three times Sydney's age. The sum of their ages is 68. What is Sydney's age?
Answer:
16
Step-by-step explanation:
Devaughn's age is three times Sydney's age. The sum of their ages is 68. What is Sydney's age?
Zainab runs her own business where she leads guided day-long tours for small groups of tourists in her city. Each tour has a maximum of 333 guests. Let XXX represent the number of customers Zainab gets on a randomly chosen day. Based on previous data, here is the probability distribution of XXX along with summary statistics: X=\text{\# of customers}X=# of customersX, equals, start text, \#, space, o, f, space, c, u, s, t, o, m, e, r, s, end text 000 111 222 333 P(X)P(X)P, left parenthesis, X, right parenthesis 0.200.200, point, 20 0.100.100, point, 10 0.400.400, point, 40 0.300.300, point, 30 Mean: \mu_X=1.8μ X =1.8mu, start subscript, X, end subscript, equals, 1, point, 8 Standard deviation: \sigma_X\approx1.08σ X ≈1.08sigma, start subscript, X, end subscript, approximately equals, 1, point, 08 It costs Zainab \$5$5dollar sign, 5 each day to pay for her own transportation to her business, and then each customer she gets pays her \$60$60dollar sign, 60. Let YYY represent Zainab's net gain on a randomly chosen day. What are the mean and standard deviation of YYY?
An
μ Y=103 dollars
σ Y≈64.8 dollars
Step-by-step explanation:
We can find her income by multiplying the number of customers by 606060, and then subtracting her fixed transportation cost to get her net gain:
Y=60X-5Y=60X−5Y, equals, 60, X, minus, 5
How will this transformation impact the mean and standard deviation?
Hint #22 / 4
Effect on mean
Multiplying by 606060 and subtracting 555 both impact the mean:
\begin{aligned} \mu_Y&=60\left(\mu_X\right)-5 \\\\ &=60\left(1.8\right)-5 \\\\ &=108-5 \\\\ &=103 \end{aligned}
μ
Y
=60(μ
X
)−5
=60(1.8)−5
=108−5
=103
Hint #33 / 4
Effect on standard deviation
Multiplying by 606060 impacts the standard deviation, but subtracting 555 does not — adding or subtracting a constant only shifts data, which doesn't affect the spread.
\begin{aligned} \sigma_Y&=60\left(\sigma_X\right) \\\\ &\approx60\left(1.08\right) \\\\ &\approx64.8 \end{aligned}
σ
Y
=60(σ
X
)
≈60(1.08)
≈64.8
The ansa
μ 103 dollars
σ 64.8 dollars
Pls help me ill give brainlyest to first correct answer! pls and thank u!
Answer:
1 1/6
Step-by-step explanation:
the answer is 1 1/6
Answer:
for the first one, it is c. the second one is b
Step-by-step explanation:
Devon records 4 hours of reality shows on her DVR. She records comedy shows for ⅜ of that amount of time. Devon watches all the reality and comedy shows in half-hour sittings.
Answer:
1 1/2 hours = 90 minutes
Step-by-step explanation:
Devon records 4 hours of reality shows on her dvr she records comedy shows 3/8 of that amount of time. Devon watches all the reality and comedy shows in half hour sittings. Find the number of hours of comedy shows that Devon records
Total hours of reality show = 4
Comedy shows = 3/8 of 4 hours
Number of hours of comedy shows that Devon records = 3/8 of 4 hours
= 3/8 × 4
= 12 / 8
= 1 4/8
= 1 1/2
Number of hours of comedy shows that Devon records = 1 1/2 hours
There are 60 minutes in an hour
1 1/2 hours = 1 1/2 × 60 minutes
= 3/2 × 60
= 180 / 2
= 90 minutes
Therefore,
1 1/2 hours = 90 minutes
-7(a - 3) = 11 - 7a
what’s the answer
Answer:
the statement is false there is no solution
Step-by-step explanation:
step 1 -7(a-3)=11-7a
step 2 -7a+21=11-7a
step 3 cancel out the -7a's
step 4 you are left with 21=11 which does not work so it is false
2 of 6
Given that a = 12 cm and b = 17 cm, work out the area of the triangle.
Give your answer rounded to 1 DP.
Answer:
102 cm²Step-by-step explanation:
area of a triangle = 1/2 * base * height
= 1/2 * 12 * 17
= 102 cm²
Given that 1 kilogram = 2.2 pounds, which statements are true?
Two kilograms is equal to 4 pounds.
Three kilograms is greater than 6 pounds.
Four kilograms is less than 8 pounds.
Five kilograms is equal to 11 pounds.
Answer:
the second and fourth statements
Step-by-step explanation:
Chanelle deposits $7,500 into the bank. She does not withdraw or deposit money for 6 years. She earns 6% interest during that time.
a. How much interest will she have earned at the end of 6 years?
Answer:
2700
Step-by-step explanation:
whats the answer ?
[tex]2(x^2 - 3) - 8 = - 6[/tex]
Step-by-step explanation:
Remove the parentheses
2x^2-6-8= -6
Cancel equal terms
2x^2-8=0
Move the constant to the right
2x^2=8
Divide both sides by 2
x^2=4
Simplify the equation
x=+2 or -2
When dividing 82 by 43, Linda estimated the quotient to be 2. Examine Linda’s work, and explain what
she needs to do next. On the right, show how you would solve the problem.
Answer:
82/43 = 1 and 39/43
Step-by-step explanation:
When dividing 82 by 43 , the operation follows;
82/43 = 1 and 39/43
This means the quotient is 1 and reminder is 39
However;
82/43 = 1.907 ------nearest whole number is 2.
so the quotient can be approximated to the nearest whole number as 2.
At the school store the cost of three markers and two pencils is exactly $2.20 while the cost of four markers and six pencils is exactly $3.40. How much would it cost to buy 1 marker and 2 pencils?
Answer:
[tex]\$0.92[/tex]
Step-by-step explanation:
Let cost of 1 marker be [tex]x[/tex] and 1 pencil be [tex]y[/tex]
From the question we get two equations
[tex]3x+2y=2.2\quad ...(i)[/tex]
[tex]4x+6y=3.4\quad ...(ii)[/tex]
Multiply the first equation by 3 [tex](i)\times3[/tex]
[tex]9x+6y=6.6\quad ...(iii)[/tex]
[tex]4x+6y=3.4\quad ...(iv)[/tex]
Subtracting the above equations [tex](iii)-(iv)[/tex] we get
[tex]5x=3.2\\\Rightarrow x=\dfrac{3.2}{5}\\\Rightarrow x=0.64[/tex]
[tex]4x+6y=3.4\\\Rightarrow y=\dfrac{3.4-4x}{6}=\dfrac{3.4-4\times 0.64}{6}\\\Rightarrow y=0.14[/tex]
One marker costs $0.64 and one pencil costs $0.14
Cost of 1 marker and 2 pencils is [tex]0.64+0.14\times 2=\$0.92[/tex].
What are the zeros of f(x) = x2 - x - 20?
Answer:
(-4,0) and (5,0)
Step-by-step explanation:
Factor.
f(x) = x^2 -x - 20
Factors of -20 that when are added they equal -1
-5 and 4
(x-5) (x+4)
x=5 and x=-4
Assume lines p and q intersect to form adjacent angles 1 and 2.
If m∠1=(7x+6)°
and m∠2=(8x−6)°,
find the value of x such that p is perpendicular to q.
Answer:
x=12
Step-by-step explanation:
To make these 2 lines perpendicular to each other, one of their angles must be equal to 90 degrees.
Therefore, we can set up an equation with one of the angles:
7x+6=90
7x=84
x=12
The information of the other angle is useless in this case, but we can use it to check by plugging in 12 for x, and seeing if it equals to 90:
8*12-6=96-6=90
Therefore, x=12.
the length of a rectangle is 5 less than twice the width. If the perimeter of the rectangle is 146 centimeters, find the dimensions of the rectangle
Answer:
26x47
Step-by-step explanation:
To calculate the length of the rectangle we would do 2(2x - 5) + 2(x) = 146
We simplify and get 6x - 10 = 146,
then divide both side by 6 and plus 10 both sides,
we will get
x = 26
Now we've found one of the length,
to find the other side we do 26 * 2 = 52, and subtract 52 from 146,
which would get 94, then we divide it by 2
94/2 = 47
The dimensions is 26x47
Sarthak wants to complete his design
project to be able to graduate. He works on
his project 20 minutes every three hours. If
his project requires 10 hours of work, how
long will he take to finish his project?
Answer:
Step-by-step explanation:
3 times 60 = 180 minutes
10 * 60 = 600 minutes
600/20 = 30 * 3 = 90 hours
evaluate composite functions f(x)=3*2^x-4 g(x)=1/1+x g(f(2))=
Answer:
Step-by-step explanation:
g(f(x))= 1/1+(3*2^x-4)
Therefore g(f(2))=1/1+(3*2^(2)-4)
7
Slope
6'
y-intercept (0, – 6)
What is the equation
Answer:
y = 7x - 6
Step-by-step explanation:
We are given the slope of 7 and the y-intercept of (0, -6).
We can easily write this in slope-intercept form.
[tex]y=mx+b[/tex]
m - slope
b - y-intercept
Replace 'm' with '7' and 'b' with '-6'.
[tex]y=mx+b\rightarrow \boxed {y=7x-6}[/tex]
Hope this helps.