Answer:
[tex]SD = 1.296[/tex]
Step-by-step explanation:
Given
[tex]n=8[/tex] --- batches
[tex]p =0.7[/tex] --- probability that a seed germinates
Required
Determine the standard deviation (SD)
This is calculated as:
[tex]SD = \sqrt{np(1-p)}[/tex]
Substitute values for n and p
[tex]SD = \sqrt{8 * 0.7 * (1-0.7)}[/tex]
[tex]SD = \sqrt{8 * 0.7 * 0.3}[/tex]
[tex]SD = \sqrt{1.68}[/tex]
[tex]SD = 1.296[/tex]
The standard deviation is approximately 1.296
Write the polynomial in standard form (-5x^3+6x^2-3x+7)+(7x^3+8x^2-10x-10)
Answer:
2x^3 +14x^2 -13x-3
Step-by-step explanation:
Question 1 (1 point)
The price P (in dollars) of a pound of flour was $0.27 in 1999. The price has increases by about 2% each year since then. Let t represent the number of years since 1999.
Use the Exponential Growth Model to calculate the price of flour, per pound, in 2002.
Fill in the blank
enter your answer in the format $5.55
round your answer to two decimal places
The price of flour per pound in 2002 was
Blank 1:
Question 2 (1 point)
Investments
You deposit $125 in a savings account that earns 5% annual interest compounded yearly. Find the balance of the account after 5 years.
Fill in the blank
enter your answer in the format $555.55
round to two decimal places
The balance after 5 years is
Blank 1:
Question 3 (1 point)
Computers
One compouter industry expert reposrted that there were about 600 million computers in use worldwide in 2001 and that the number was increasing at an annual rate of about 10%
Use the exponential growth model to predict the number of computers that will be in use worldwide in 2009
PLEASE ANSWER MATH QUESTIONS!!!!!!!!!! 9TH GRADE ALGEBRA
40 POINTS
Fill in the blank
round your answer down to the nearest whole computer
There will be computers in use worldwide in 2009
Blank 1:
What is the difference of
5
6
−
5
12
? Use the fraction strip to help.
Answer:
The difference is 5/12.
Step-by-step explanation:
Can someone help on how many dresses does Lucy sew in a hour?
A straight line has a slope of 2.08. Calculate the angle that the line makes with the x (horizontal) axis.
Answer:
The angle that the line makes with x-axis of of 64.3º.
Step-by-step explanation:
Equation of a line, and angle with the x axis:
The equation of a line has the following format:
[tex]y = mx + b[/tex]
In which m is the slope.
The angle that the line makes with the x axis is given by the angle which has tangent m, that is, [tex]a = \tan^{-1}{m}[/tex].
In this question:
We have that [tex]m = 2.08[/tex]. So
[tex]a = \tan^{-1}{2.08} = 64.3[/tex]
The angle that the line makes with x-axis of of 64.3º.
Diane had 0.9 grams of pepper. Then she used 0.6 grams of the pepper to make some scrambled eggs. How much pepper does Diane have left? 10min left!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Diane had 0.3 grams of pepper left
Step-by-step explanation:
If she had 0.9 grams of pepper, we can subtract the amount of pepper she used (0.6) to find out how much she has left.
0.9 - 0.6 = 0.3
(sorry if this is confusing but I hope it helped)
Answer:
She has 0.3 grams of pepper left.
Step-by-step explanation:
0.9 g - 0.6 g = 0.3 g
It's just like answering 9 - 6 (= 3) but moving he decimal forward 1 placement.
Find the missing length, if the triangles are similar.
Answer: I think its 19
Step-by-step explanation:
42- 28= 14
33- 14= 19
Which numbers form a Pythagorean triple?
Answer:
A. 9, 12, 15
Step-by-step explanation:
9, 12, 15 is a set of numbers that form pythagorean triple because it satisfies the equation, a² + b² = c².
Where, c is the longest side while a and c are the two other legs of the triangle.
Thus:
9² + 12² = 15²
225 = 225 (this is true).
Can someone please help me answer this ?
Answer:
113.6 feet
Step-by-step explanation:
set up a proportion of height of structure over height of shadow
let t = height of tree
t = 125
5 5.5
cross-multiply: 5.5t = 625
t = 625 / 5.5
What is the answer to this?
Answer:
A. Correct
B. Correct
C. Incorrect
D. Incorrect
E. Incorrect
Step-by-step explanation:
A and B. are correct because when divided down to decimals they equal 0.5
Answer:
A and B
Step-by-step explanation:
5 divided by 10 equals 0.5
50 divided by 100 equals 0.5
5/10 is also known as 5 divided by 10
If it takes 12 days to fill a tank using four taps, how long would it take to fill the same tank using 6 taps instead?
Answer:
8 days
Step-by-step explanation:
A red-hot sword was plunged into cold water. This caused the temperature difference between the sword and
the water to decrease rapidly.
The relationship between the elapsed time t, in seconds, since the sword was plunged into water, and the
temperature difference, D(t), is modeled by the following function:
t
9.7
D(t) = 256
4
Complete the following sentence about the decay rate of the temperature difference.
1
The temperature difference is reduced by a factor of
4
every
seconds.
Answer:
every 9.7 seconds
Answer:
9.7 seconds
Step-by-step explanation:
Got it correct on Khan Academy:
help help help help help ASAP help hellppp
Answer:
£280
Step-by-step explanation:
Select the correct answer.
Melinda conducted an experiment regarding the effectiveness of two graphic design training courses, Image-nation and Perfect Pics. She randomly selected 20 people from her marketing team and assigned 10 team members to each training course.
To determine the effectiveness of Image-nation and Perfect Pics, Melinda assigned the same task to all participants at the beginning and at the end of each program. She stated that a training course is effective if there is a decrease in time required to complete a graphics task. At the beginning of each course, Melinda found the average time to complete a task for Image-nation participants to be 60 minutes and the average time to complete a task for Perfect Pics participants to be 70 minutes. At the end of each training course, Melinda found the time taken to complete a task for Image-nation participants to be 50 minutes and the average time to complete a task for Perfect Pic participants to be 55 minutes.
Which statement should be included in Melinda’s report of the experiment's results?
A.
The Image-nation and Perfect Pics courses are both effective because the average time to complete a task decreased for each program; however, Image-nation is the more effective program because it yielded a greater decrease in the average time to complete a task.
B.
Perfect Pics is the only course that resulted in a decreased average time to complete a task; therefore, Perfect Pics is the more effective course.
C.
Image-nation is the only course that resulted in a decreased average time to complete a task; therefore, Image-nation is the more effective course.
D.
The Image-nation course and the Perfect Pics course are both effective because the average time to complete a task decreased for each course; however, Perfect Pics is the more effective course because it yielded a greater decrease in the average time to complete a task
Answer: c
Step-by-step explanation:....
The statement 'The Image-nation course and the Perfect Pics course are both effective because the average time to complete a task decreased for each course; however, Perfect Pics is the more effective course because it yielded a greater decrease in the average time to complete a task' should be included in Melinda’s report of the experiment's results.
The correct answer is option (D)
What is average?"It is calculated by adding all the numbers and then dividing by total count of those numbers."
For given example,
At the beginning of each course,
the average time to complete a task for Image-nation participants to be 60 minutes
⇒ t1 = 60
the average time to complete a task for Perfect Pics participants to be 70 minutes
⇒ x1 = 70
At the end of each training course,
the average time taken to complete a task for Image-nation participants to be 50 minutes
⇒ t2 = 50 minutes
the average time to complete a task for Perfect Pic participants to be 55 minutes.
⇒ x2 = 55 minutes
The decrease in average time to complete a task for Image-nation is,
t1 - t2
= 60 - 50
= 10
And the decrease in average time to complete a task for Perfect Pics is
x1 - x2
= 70 - 55
= 15
This means, Perfect Pics is the more effective course because it yielded a greater decrease in the average time to complete a task.
Therefore, the statement 'The Image-nation course and the Perfect Pics course are both effective because the average time to complete a task decreased for each course; however, Perfect Pics is the more effective course because it yielded a greater decrease in the average time to complete a task' should be included in Melinda’s report of the experiment's results.
The correct answer is option (D)
Learn more about decrease in values here:
https://brainly.com/question/13011862
#SPJ2
Find the median of the following numbers: 195, 230, 200, 226
Answer: 213
Step-by-step explanation: The median is the middle number
in the data set when the data set is written from least to greatest.
So let's start with writing ur data set from least to greatest.
So we have 195, 200, 226, 230.
Notice that there are two middle numbers.
If there are two middle numbers in the data set,
we find the median by taking their average.
In other words, we add the two middle numbers and divide by two.
So we have 200 + 226/2 or 426/2 which is 213.
What are the solutions to –2x+ 2 = (3) +1?
Answer:
x=1
Step-by-step explanation:
Let's solve your equation step-by-step.
2x+2=3+1
Step 1: Simplify both sides of the equation.
2x+2=3+1
2x+2=(3+1)(Combine Like Terms)
2x+2=4
2x+2=4
Step 2: Subtract 2 from both sides.
2x+2−2=4−2
2x=2
Step 3: Divide both sides by 2.
2x2=22
x=1
A merchant gains 20 %by selling an article for rs 480. what percent would he have gained or lost if he had sold it for rs 430
Answer: 7.5% gain
Step-by-step explanation:
First find the original price of the article.
Assume this price to be x.
x + (x * 20%) = 480
x + 0.2x = 480
1.2x = 480
x = 480/1.2
x = Rs. 400
Original price is Rs. 400.
If the merchant had sold the article for 430, the percent gain would have been:
= (Selling price - original price) / Original price
= (430 - 400) / 400
= 7.5%
pls help!
how would the expression x^3-8 be rewritten using difference of cubes?
A- (x+2)(x^2+2x-4)
B- (x-2)(x^2-2x+4)
C-(x+2)(x^2-2x+4)
D-(x-2)(x^2+2x+4)
Answer:
D
Step-by-step explanation:
Difference of cubes is as follows
x^3-y^3=(x-y)(x^2+y^2+xy)
*notice how the sign in the origonal equation is the same for the first part but then flipped for the second*****
8 can be rewritten as 2^3 so we have
x^3-2^3 which means that we can use the template from before
(x-2)(x^2+2^2+2x)
simplify the 2^2 into 4 and put the variables in front to get
(x-2)(x^2+2x+4)
This is the same as D
needs help* yes plz do help
If that is multiply
Answer:
94.2
Step-by-step explanation:
15.7(3.09+2.91)=15.7*6=94.2
HELP PLEASE ASAP
Will give brainliest
Answer:
haha i am an adult
Step-by-step explanation:
dont cheat in school
I’m a little confused so if you could really help me thank you (don’t just answer because of the points)
The term is a
The base would be b
Answer:
ok so the base is this 10³ so like 10 is the base and a term is a math expression
Step-by-step explanation:
A plane is at 8000 feet above the ground. It descends at a rate of 550 feet per minute. Write an equation to model this situation.
How long would it take the plane to reach the ground?
Write this ratio as a fraction in lowest terms 20 minutes to 90 minutes sources
20 : 90
lowest terms: 2 : 9
#5 10 pounds of Cat Food A costs $6.50.
20 pounds of Cat Food B costs $14.
Which cat food is a better deal?
Answer:
A
Step-by-step explanation:
6 is less than 14 obviously.
Today, everything at a store is on sale. The store offers a 20% discount.
0
0%
20%
40%
6096
80%
100%
120%
Xander walks 4 laps around a track in 16 minutes. (Use decimal numbers if appropriate)
A. How many minutes per lap is that?
B. How many laps per minute is that?
C. If Xander walks 9 laps at the same rate, how long does it take him?
Answer:
a. 4 minutes per lap
b. 0.25 laps per minute
c. 36 minutes
Step-by-step explanation:
a. divide 16 by 4 to get the answer
b. divide 4 by 16 to get the answer
c. divide 9 by 4 to get 2.25 then multiply 2.25 by 16 to get 36
Johnson Company just acquire a building for $200,000 through financing from Bank of America at a 5% annual interest rate, with 20 years to maturity of the loan. What would be Johnson Company's monthly mortgage payment?
Find the largest and smallest whole number when rounded to the nearest hundred to give 1600.
Answer:
Step-by-step explanation:
Smallest and largest whole number which gives 1600 when rounded to the nearest hundred.
The lowest whole number is 1550
The highest while number is 1649
Wheb rounding to the nearest hundred, the tens value which comes after the hundred value is carefully observed, of the tens value is less than 5, then it is rounded down to zero. However, if the tens value is greater than or equal to 5, it is rounded to 1 and added to the hundred value.
Numbers below 1550 will not round to 1600 (nearest 100) also numbers greater than 1649will not round to 1600(nearest 100).butvall numbers in between them will round to 1600 (nearest hundred)
Graph the given function.
f(x) = 7
Which key features apply to the graph?
A.
The graph has an asymptote at y
O and is decreasing as x approaches positive infinity.
OB
O C.
The graph has an asymptote aty 7 and is decreasing as x approaches positive infinity.
The graph has an asymptote at y = 7 and is increasing as x approaches positive Infinity.
The graph has an asymptote aty = 0 and is increasing as x approaches positive infinity.
OD.
The graph has an asymptote at y = 0 and is increasing as x approaches positive Infinity. Then the correct option is A.
What is asymptote?An asymptote is a line that constantly reaches a given curve, but does not touch at any infinite distance.
Graph the given function.
f(x) = (7)ˣ
The graph of the function is given below.
From the graph, the graph has an asymptote at y = 0 and is increasing as x approaches positive Infinity.
Then the correct option is A.
The complete question is given below.
More about the asymptote link is given below.
https://brainly.com/question/17767511
#SPJ2
y-2x=-1 in slope intercept form
Y=2x-1
Step-by-step explanation:
I am big brain
Answer:
y=2x-1
Step-by-step explanation:
You add 2x to the other side, then rearrange
