Answer:
a
Step-by-step explanation:
Double negatives make a positive. Hope this helps!
A manufacturer who is considering the implementation of a one-week training program for all new employees decides to test the program with the next 100 employees hired, and then compare their productivity rate to the productivity rate of new employees based on past records–a rate that is normally distributed with a mean of 60 and a standard deviation of 8. The new program needs to produce a minimum improvement of 4 to be considered worthwhile. What is the comparison distribution's standard deviation?
Answer:
0.8
Step-by-step explanation:
From the given information:
The population mean = 60
The standard deviation = 8
The sample size = 100
The sample distribution which follows a normal distribution is the set of values taken by this statistic on each sample from the same population.
The standard deviation of the comparison distribution's = [tex]\dfrac{\sigma}{\sqrt{n}}[/tex]
The standard deviation of the comparison distribution's = [tex]\dfrac{8}{\sqrt{100}}[/tex]
The standard deviation of the comparison distribution's = 8/10
The standard deviation of the comparison distribution's = 0.8
Which of the following equals 5.96?
A. 2.98 + 2.89
B. 0.6 + 5.9
C. 6.03 + 0.07
D. 1.061 + 4.899
Answer:
D. 1.061 + 4.899
Step-by-step explanation:
1061 + 4899 149 149
——————————— = ———
1000 25 25
149
——— = 5.96000
25
If this helps please mark brainliest. Have a great day!
an ablum recieve an award when it sells 10,000,000 copies. An ablum has sold 7,680,000 copies. How many more copies does it need to sell to recieve the award
Answer:
2,320,000
Step-by-step explanation:
10,000,000
-
7,680,000
__________
2,320,000
Answer:
2,320,000
Step-by-step explanation:
You have to subtract the 10,000,000 by the amount that has already been sold in order to find out the difference on how many copies are left in order to receive an award.
10,000,000 - 7,680,000 = 2,320,000
PLEASE HELP ME FAST
1. Given the diagram to the right and information below, determine which lines, if any are parallel. State the converse that justifies your answer
Answer:
Step-by-step explanation:
Given Parallel lines Converse
a). ∠13 ≅ ∠17 a║c Corresponding angles
b). ∠4 ≅ ∠9 b║e Exterior alternate angles
c). m∠19 + m∠22 = 180° a║b Same side exterior angles
d). ∠8 ≅ ∠19 Vertical angles.
e). ∠10 ≅ ∠23 b║c Alternate angles
f). m∠14 + m∠17 = 180° a║c Same side Interior angles
Find the value of x in each of the following A)2x=10 B)3x=27
Anna has 1 more than half the number of pets her friend does. Anna has 3 pets.
Answer:
Anna's friend has 4 pets.
Step-by-step explanation:
Anna has 3 pets.
3-1=2
2x2=4
How do I do this problem
what is the simplified term
(6^2)(-3^5)
Answer:
-8748
Step-by-step explanation:
(6^2)(-3^5)
(6 x 6)(-3 x-3 x-3 x -3 x -3)
(36)(-243)
36 x -243
-8748
Select each points that are colinear
A. H,C,B
B. Z,K,R
C. B,R,Z
D. H,B,K
E. C,H,J
Answer:
a
Step-by-step explanation:
its a
3x + 8
What is it please
Answer:
11x
Step-by-step explanation:
Add the 3 and 8 togeter, you will get 11 then the x at the and of you're solution.
PLEASE, I NEED HELP!!!!
MATHS!!!
Answer:
a
Step-by-step explanation:
A plane intersecting a double-napped cone is perpendicular to the central axis. Which conic section is formed?
Answer:
circle
Step-by-step explanation:
lol where teh f parabola come from
if it's perpendicular it makes a 90 degree angle to the central axis
that would make it a circle...
parabolas r when the plane forms the same angle w the central axis as the generator..............................
A conic section which is formed by a plane intersecting a double-napped cone that is perpendicular to the central axis is a: A. circle.
What is a circle?A circle can be defined as a closed, two-dimensional curved geometric shape with no edges or corners. Also, it refers to the set of all points in a plane that are located at a fixed distance (radius) from a fixed point (central axis).
In Geometry, a circle is a conic section which is formed by a plane intersecting a double-napped cone that is perpendicular to the central axis because it forms an angle of 90° with the central axis.
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are fractions with the same denominator?
Answer:
To solve fractions, you MUST HAVE THE SAME DENOMINATORS WHEN DEALING WITH ADDITION AND SUBTRACTION.
Step-by-step explanation:
For example, 2/3 + 3/6
The denominators in this case have a common denominator which is 6.
All you have to do is multiply the 2/3 by 2 in the numerator and the denominator. Once you do, you'll get 4/6 which you could then add to 3/6 to get 7/6 which would equal 1 1/6 or 7/6 either is fine.
Hope this helps! :)
Answer:
To solve fractions, you MUST HAVE THE SAME DENOMINATORS WHEN DEALING WITH ADDITION AND SUBTRACTION.
Step-by-step explanation:
what is 46.025 written in scientific notation?
Every day the Washington pet store uses 3/4 of a bag of dog food to feed the dogs his many days will 1 1/2 bags of dog food last
Answer:
2 days
Step-by-step explanation:
Can you help me please
Answer
3
Step-by-step explanation:
(4-1)^2+(8-8)^2=9
square root of 9 is 3
13
214
517
68
Which of the following angles are
congruent to 25? Select all that
apply.
А.
21
с
23
B
22
D 24
Answer:
D is answer
Step-by-step explanation:
please follow me
-7 w 2 + 2w (if w=-4)
Answer:
48
Step-by-step explanation:
plug in -4 for W
if you mean times 2 not plus after -7w
-7(-4) (2) + 2(-4) =
28(2) - 8 =
56-8=
48
According to Boyle's Law, if the temperature of a confined gas is held fixed, then the product of the pressure P and the volume V is a constant, suppose that, for a certain gas, PV=800 where P is measured in pounds per square inch and V is measured in cubic inches. Answer the following: (this is calculus)
A) Find the average rate of change of P as V increases from 200in^3 to 250in^3.
B) Express V as a function of P and show that the instantaneous rate of change of V with respect to P is inversely proportional to the square of P.
If PV = 800, then P can be written as a function of V,
P(V) = 800 / V
(a) The average rate of change of P as V increases from 200 to 250 in³ is then
(P (250) - P (200)) / (250 in³ - 200 in³) = (3.2 lb/in² - 4lb/in²) / (50 in³)
... = -0.016 (lb/in²)/in³
(Or -0.016 lb/in⁵, but I figure writing the rate as (units of pressure) per (unit volume) makes more sense.)
(b) We can also write V as a function of P :
V(P) = 800 / P
Take the derivative:
V'(P) = - 800 / P²
which immediately demonstrates that V'(P) ∝ 1 / P², as required. (The fish-looking symbol, ∝, means "is proportional to".)
If differentiating is supposed to be more involved, you can use the limit definition:
[tex]V'(P)=\displaystyle\lim_{h\to0}\frac{V(P+h)-V(P)}h[/tex]
[tex]V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800}{P+h}-\frac{800}P}h[/tex]
[tex]V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800P-800(P+h)}{P(P+h)}}h[/tex]
[tex]V'(P)=\displaystyle800\lim_{h\to0}\frac{-\frac h{P(P+h)}}h[/tex]
[tex]V'(P)=\displaystyle-800\lim_{h\to0}\frac1{P(P+h)}=-\dfrac{800}{P^2}[/tex]
Part(a): The average rate of change of [tex]\frac{dP}{dV}[/tex] is [tex]-0.0164 lb/in^{2}[/tex]
Part(b): The required answer is [tex]\frac{dV}{dP} \infty \frac{1}{P^{2}}[/tex]
Part(a):
Given,
[tex]PV=800[/tex]
Differentiating the above equation with respect to [tex]V[/tex].
[tex]\frac{dP}{dV}=-\frac{P}{V}[/tex]
Now, at [tex]V=200 in^{3}[/tex] and [tex]P=4 lb/in^2[/tex]
At [tex]V=250 in^3[/tex] and [tex]P=\frac{80}{25} lb/in^2[/tex]
Hence, we can write,
[tex]\frac{dP}{dV}[/tex] at [tex]V=200[/tex] we get,
[tex]\frac{-1}{200}=\frac{-1}{50}[/tex]
Again [tex]\frac{dP}{dV}[/tex] at [tex]V=250[/tex] we get,
[tex]\frac{-80}{25\times 250}[/tex]
So, the average rate of change of [tex]\frac{dP}{dV}[/tex] is,
[tex]\frac{-\frac{1}{50}- \frac{8}{25\times25} }2\\=-\frac{1}{100}-\frac{1}{625}\\=-0.0164 lb/in^2[/tex]
Part(b):
Given,[tex]PV=800[/tex] then,
[tex]V=\frac{800}{P}[/tex]
Now,[tex]\frac{dV}{dP} =-\frac{800}{P^2}[/tex]
Then the above implies,
[tex]\frac{dV}{dP} \infty \frac{1}{P^{2}}[/tex]
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a student claims 3.657 is a rational number. which statement is correct
Answer:
poope
Step-by-step explanation:
dhishd ok wbeiebeijfid djdiixe
Answer:
Step-by-step explanation:
The student is correct because the number has decimal expansion that repeats.
Find the value of x and y that satisfy both of the equalities x /y= 2/3 and y/12 = 3/4.
Answer:
x=6;y=9
Step-by-step explanation:
First you try to find y in the second equation --> y/12=3/4
You divide 12 by 4 to see how many times y/12's denominator and numerator is bigger. 12/4 is 3, so to find y you multiply 3*3. so 9/12=3/4. To check this, you multiply 3 on each side of the fraction -->
3*3=9 4*3=12.
Then, you can just put y into the first equation, which is x/y=2/3. Pluck that in, and you get x/9=2/3. Do the same thing you did in the first step, and you should get 6/9=2/3. Hope this helped :)
Answer:
x=6; y=9
Step-by-step explanation:
An elevator rises steadily up a skyscraper. After 4 s it is 33 m above the ground, 2 s later it is 47 m above the ground. Which equation models its position, y, with respect to time, x?
A. y-47= -7(x-2)
B. y+33=7(x+4)
C. y-33= -7(x-4)
D. y-33=7(x-4)
Answer:
C
Step-by-step explanation:
It would be c i took the test:)
The required equation model would be y - 33 = -7(x -4) which is the correct answer would be option (C).
What is the slope of the line?A line's slope is defined as its inclination. It is denoted by m
Slope m = (y₂ - y₁)/(x₂ -x₁ )
Consider Points 1 and 2 on a line. Point 1's coordinates are (x₁ , y₁), and Point 2's coordinates are (x₂, y₂).
Given that the continuously rising building is an elevator. It is 33 meters above the ground after 4 seconds, and 47 meters above the earth after 2 seconds.
Let the required equation model would be as:
y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x₂ -x]
x₁ = 4, y₁ = 33
x₂ = 2, y₂ = 47
⇒ y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x₂ -x]
Substitute values in the equation, we get
⇒ y - 33 = (47-33)/(2-4 )[x -4]
⇒ y - 33 = 14/(-2 )[x -4]
⇒ y - 33 = -7(x -4)
Therefore, the equation model is y - 33 = -7(x -4).
Learn more about Slope of the Line here:
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What are the slope and the Y intercept of the linear fractionThat is represented by the equation y= - 10x + 1
The slope is the number with the letter x
The slope would be -10
The y intercept is the number at the end of the equation.
The y intercept is 1
Walmart is selling 24 bars Gatorade for $8.44 what is the price per bottle
Answer:
About $0.35 per bottle.
Step-by-step explanation:
8.44 / 24 = .3516
Answer:
roughly 35 cents
Step-by-step explanation:
8.44/ 24= .3516
.3516x24= 8.44
Hope this helps. Plz give brainliest.
Which equation is true
Answer:
A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
a fraction is basically saying the numbers are being divided so if you do -20 divided by 2 then you would get negative 10 since a negative divided by a positive would be a negative.
These two graphs show the same data. What is
different about the two graphs?
the vertical scale
the horizontal scale
the width of intervals
the starting values of the intervals
Answer:
A. (the vertical scale)
2nd part is the Bottom graph
Step-by-step explanation:
Answer:
A. The Vertical Scale
Step-by-step explanation:
the other one has more value than the other....And i got it right from
---------------------------------------E D G E N U I T Y 2 0 2 0--------------------------------------
hope this helps. :P
will mark brainliest Evaluate the expression 7x2y, when x = 4 and y = 2.
Answer:
112 hope this helps you out
Answer:
7x2y = [tex]\boxed{112}[/tex]
Step-by-step explanation:
7x2y = 7x * 2y = 14xy = 14(4)(2) = 14*4*2 = 112
Which best describes the function represented by the table -2,-5 2,5 4,10 6,15
Answer:
Direct variation; k=5/2
Step-by-step explanation:
Edge quiz, got it right
The surface area for a right rectangular prism is given by the following expression:
2(3x)(4x + 2) + 2(2x)(4x + 2) + 2(3x)(2x)
Which might be the dimensions of the prism, considering the formula for the surface
area for a right rectangular prism, A = 2wl +211 + 2hw? Select a length, width, and
height from the following list of answer choices.
Select exactly three choices.
А
4x + 2
B 2
С
2x
D
3x
Answer:
A B and D
Step-by-step explanation:
How do you do this 10 8/9+ 2 5/8+ 16 2/9+ 5 7/8=
Answer:
first u find a common denominator for all of them and then add them all together
Step-by-step explanation:
I really do hope this helps!!!
Answer:
35.61
Step-by-step explanation:
Add 10 +2+16+5= 33
Then add 5/8+7/8= 1.5
Then add 8/9+2/9= 1.1
Then add 33+1.5+1.1= 35.61
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