Answer:
y=7
Step-by-step explanation:
When ever the slope is 0, the line is completely flat. This means that the equation has the same y for every point.
The y on the point given is 7, therefore the answer is y=7.
The pmf of the amount of memory X (GB) in a purchased flash drive is given as the following. x 1 2 4 8 16 p(x) 0.05 0.15 0.25 0.30 0.25 (a) Compute E(X) (in GB). (Enter your answer to two decimal places.) GB (b) Compute V(X) (in GB2) directly from the definition. (Enter your answer to four decimal places.) GB2 (c) Compute the standard deviation of X (in GB). (Round your answer to three decimal places.) GB (d) Compute V(X) (in GB2) using the shortcut formula. (Enter your answer to four decimal places.) GB2
Answer:
Kindly check explanation
Step-by-step explanation:
Given the data :
x: ____ 1____ 2____ 4____ 8____ 16
p(x): _0.05_ 0.15__ 0.25__0.30__ 0.25
E(X) : Σ[(X). P(X)]
Σ(1*0.05) + (2*0.15) + (4*0.25) + (8*0.30) + (16 * 0.25)
= 7.75
B)
E(x) = u = 7.75
Var(X) = E[(x - u)²*p(x)] = (1 - 7.75)^2 * 0.05 + (2 - 7.75)^2 * 0.15 + (4 - 7.75)^2 * 0.25 + (8 - 7.75)^2 * 0.30 + (16 - 7.75)^2 * 0.25 = 27.7875
C)
Standard deviation (s)
s = √Var(x)
s= √27.7875
s = 5.271
D)
VAR(X) = E(X²) - (E(X))²
E(X²) = Σx²*p(x)
E(X²) = Σ(1^2 * 0.05 + 2^2 * 0.15 + 4^2 * 0.25 + 8^2 * 0.30 + 16^2 * 0.25) = 87.85
V(X) = E(X^2) - (E(X))^2 = 87.85 - 7.75^2 = 27.7875
how many inches smaller is a 13.26 inch worm than a 14.13 inch worm
PLS HELP ASAP
Explain how to estimate the product of 12 x 6. Use complete sentences in your answer.
WRITER
I need a written response pls not just the answer
Answer:
10×6 with 20% added = 60+12 = 72
Step-by-step explanation:
There are several ways to estimate the product of these numbers. One way is to round 12 to 10, then multiply 10×6 to get 60 as an estimate. You know this estimate is low, because you rounded down from 12 to 10. You know that a better estimate will be about 20% higher, because 12 is 20% higher than 10.
The product can be computed mentally by recognizing that 12 is 6×2, so the product will be 6²×2. Most schools have you memorize your times tables at least through 10×10, so you already know that 6² is 36. Doubling that value (to 72) gives you the value of 6×12.
Another way to estimate the product is to round 12 to 10 and 6 to 5. Again, you know each of these "stand-in" values needs to be increased by 20% to match the real values. Then the product estimate is 10×5 = 50, and you judge that to be low by 20% +20% = 40%. 40% more than 50 gives you a refined estimate of 70, but you know that, too, is low by a small amount. (Percentage changes can only be added accurately when they are very small. The true error is 44%, which is 20%+20%+(20%)(20%).)
for a repair job an electrician charges an hourly rate of d dollars plus a flat fee of 50 the electricion charged a total if 114 for a 4-hour repair job. Part B. What is the value of D
Answer:
B. 4d + 50 = 114
Step-by-step explanation:
Given parameters:
Hourly rate = $d/hr
Flat fee = $50
Charge for the 4hrs = $114
Number of hours = 4hrs
To find d;
Total cost = $114;
$114 = Flat fee + (rate per hour x number of hours)
$114 = $50 + 4d
The value of d can be calculate using;
4d + 50 = 114
The value of d is 4d + 50 = 114
__,__,__,89,115,141 so
Answer:
11, 37, 63, 89, 115, 141
Step-by-step explanation:
Subtract 89 from 115 and you get 26.
Subtract 115 from 141 and you get 26.
Its a pattern, subtract 26 from 89 and you get 63, keep subtracting 26.
Answer:
11, 37, 63, 89, 115, 141
Step-by-step explanation:
Every time you proceed right you add 26 to the last number.
Every time you go left you take away 26 from the last number
Hope this helps:)
(just add until 89 is 115 and add the answer to 115 and see if the answer adds up)
Which equation is a function?
O A. X = -2
O B. Y= 2x – 9
O C. y² = x - 2
O D. x² + y² = 9
the answer is B -- no matter the x factor y should be single
Write the equation of the line that passes through (-1,2) and (4,-2)
Simplify the algebraic expression by combining like (or similar) terms.
x - 5x
Answer:
-4x
Step-by-step explanation:
Subtract 5x from x to get to -4x.
Answer:
-4x
Step-by-step explanation:
you only need to simplify the constants of the terms
(1) + (-5) = -4
a
b
124°
95°
42
53°
C
باوکی
39°
95°
If the slope of line c is given, the slope of
which other line is known?
Answer:
Line d
Step-by-step explanation:
Since, transversal b is forming equal degree of angles (95°) with lines c and d.
So, line c || line d
As we know that parallel lines have same slope.
So, If the slope of line c is given, the slope of line d is also known.
Which single transformation can be applied to the graph of y = 72 StartRoot x EndRoot to produce the graph of y = 9 StartRoot x EndRoot?
- vertical translation
- vertical compression
- horizontal translation
- horizontal compression
Answer:
vertical....
Step-by-step explanation:
NawfSide 38 Baby
Answer:
B vertical compression
Step-by-step explanation:
edge :)
You want to estimate the number of students in your middle school who play video
games. Which of the following would represent a random, valid sample?
O 10 students from your homeroom class
O Your 5 best friends at the lunch table
100 randomly selected people from your apartment complex
O 100 students selected randomly as their enter your middle school in the morning
Answer:
100 students selected randomly as their enter your middle school in the morning
Step-by-step explanation:
Answer:
C (100 students selected randomly from your middle school)
Step-by-step explanation:
The first one is wrong because its only 10 people from your homeroom.
The next one is also wrong sense its only 5 people who could also share the same interests as you.
The next one is wrong because its not from their middle school
That leaves us with the last one, its selected randomly with a lot of people involved from their middle school.
72 red roses, 60 pink roses, and 48 yellow roses. What is the greatest number of bouquets that the florist can make if no roses are left over?
Answer:
12 bouquets
Step-by-step explanation:
Determine what the greatest common factor is in this case...
72/12 = 6 red roses
60/12 = 5 pink roses
48/12 = 4 yellow roses
As you can see the greatest common factor is 12. Therefore the greatest number of bouquets that the florist can make if no roses are left over should be 12 bouquets.
Which angle is a vertical angle with Angle EFD?
Answer:
Angle AFB
Step-by-step explanation:
A line has a slope of -2/3 and passes through the point -3 and eight what is the equation of the line
Answer:
Y=-2/3x+10
Step-by-step explanation:
We have the slope -2/3, so we can find the y intercept by plugging in the given coordinate (-3,8). if y=mx+b, 8=-2/3(-3)+b. If you simplify the equation, you would get 8=-2+b, and then you would get 10=b. 10 would then be the y intercept.
There are 450 cars in the car lot about 28% of them are hybrid cars. About how many cars are hybrid cars? Explain your reasoning.
Answer:
there are 126 hybrid cars.
Step-by-step explanation:
28% of 450 is 126
ta-daaa
What is the slope of the line represented by the equation y = 4/5x - 3?
-3
-4/5
4/5
3
Answer:
4/5 is the slope of the line represented by the equation y = 4/5x - 3
Kimora drove with frankie to her mothers house which is 310 miles away. If it took them 6 hours, what was their average speed ?
Answer:
51.6 was the average speed
Step-by-step explanation:
speed= distance/time
There are 15 students on the debate team. Of these, 3 are boys. Give the ratio of boys to girls on the debate team in simplest form.
Answer:
1/5
Step-by-step explanation:
-4(7a + 5) = -160
What does A = to? :)
Answer:
a=5
Step-by-step explanation:
first, let's distribute on the left side.
-4(7a+5)=-160
-28a-20=-160 distribution
-28a=-140 adding 20 on both sides
a=5 dividing by -28 on both sides
there's your answer!
You earn $9.50 per hour at your summer job. Write and solve an inequality to find the number of hours you need to work to buy a camera that costs $247. define the variable. create an inequality. Solve.
A candy store makes 6 1/2 pounds of fudge in 1/4 hr how many pounds of fudge can the store make in 1 hr
Answer:
26 lbs
Step-by-step explanation:
there are four 1/4 hours in an hour 1/4 x4=1 hour
6 1/2 x4= 26 lbs in an hour
what is 5 minus 4???
ik its getting harder
but im very stuck
Answer:
5-4=1
Step-by-step explanation:
it would equal 1 since 4+1=5
Answer:
YoUr AnSwEr Is EqUaL tO oNe
Step-by-step explanation:
5 MiNuS 4 eQuALs 1
Which are correct representations of the inequality -3(2x - 5) < 5(2-x)? Select two options. A)x< 5
B)-6x - 5 < 10-X
C)-6x + 15 < 10 - 5x
D)6 -3 1 2 3 5 6 7
E)-7-6 --5 4 3 2 1 1 2 3
Answer:
C and D or 3 and 4 0-0
Step-by-step explanation:
Answer:
C and D
Step-by-step explanation:
EDG 2021
What is the solution to the following equation?
X-3(2x-8)= -25
A. X= 11
B. X= 14
C. X=10
D. x=5
Answer: X-3(2x-8)= -25
A. X= 11
B. X= 14
C. X=10
D. x=5
Step-by-step explanation:
if 300 apples cost 17600 how much does 1 apple cost
Answer:
58.67 17600/ 300 = 58.67
hi please help ): picture is included
Answer:
a
Step-by-step explanation:
the over all total equals 200 and you can not subtract the 2 variables to get the total you have to add them
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
how many centiliters are in 3 quarts?
Answer:
283-284
The real answer is like 283.906
Could anybody help with this question? My teacher didn’t give a review so I’m not sure what to do. Any help is appreciated!
Answer: 6
Step-by-step explanation: set the equations equal to each other then solve. plug that number into the equation for AB
Please first to answer will get brainliest
The water level of a tank every minute since it began filling is indicated by segments A,B,C on the graph below
Put the segments in the correct order from least to greatest rate of increase in water level
A then C then B
I hope this helps!