Answers
Answer:
The first one
Step-by-step explanation:
x^(2) +7x -8
x^(2) +7x +7/2^(2) +-1*(7/2)^2+-8 Complete the square
x+7/2^(2) +-1 x 7/2^(2) +-8 Use the binomial formula
x+7/2^(2) +1 x -81/4 simplify
1(x+7/2)^2+1 x -81/4
Related Questions
A farmer sells 9.8 kilograms of pears and apples at the farmer's market. 3/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?
Answers
Answer:
2.45 kg of apples
Step-by-step explanation:
The farmer starts with 9.8 kg of fruit, and 3/4 of that is pears meaning the remaining 1/4 is apples. 9.8kg * 1/4 = 2.45 kg of apples
Suppose a farmer wants to estimate the true variance in daily milk yield from the dairy cows on her farm. The farmer randomly selects five dairy cows from those on her farm. She records the total amount of milk each cow yields in a single day. The farmer then computes the variance in daily milk yield from the dairy cows among these five cows.
Classify each description as one of a parameter, variable, population, sample, data, or statistic. Each classification has one description.
Parameter a quantity equivalent to the volume of milk produced by a randomly selected cow
Variable the variance in daily milk production among the farmer's cows
Data the variance in daily milk production among the cows in the farmer's sample
Statistics the five cows selected by the farmer measurements collected on cows selected by the farmer
Population all of the farmer's dairy cows
Sample the five cows selected by the farmers
Answers
Answer:
Sample = The 5 cows selected by the farmer.
Population = all of the farmer's dairy cows
Statistic = The five measurements collected on cows selected by the farmer.
Data = Variance in daily milk production among the cows in the farmer's sample
Parameter = a quantity equivalent to the volume of milk produced by a randomly selected cow
Step-by-step explanation:
Population refers to all members belonging to a particular group of interest ; all the farmer's dairy cows
Sample : A small subset of observation selected from the sample; 5 selected cows from the population.
Statistic: Numeric characteristic of the observations derived from the sample
Parameter : Numeric characteristic of observation derived from the population.
Data: gathered figures calculated from either sample or population ; the variance in Daily milk production.
Find an equation of the line that satisfies the given conditions.
Through
(−3, 2) and (−2, −5)
Answers
Answer:
Step-by-step explanation:
y=mx+b, where m=slope and b=y intercept
m=(y2-y1)/(x2-x1), we have points (-3,2) and (-2,-5) so
m=(-5-2)/(-2-(-3))
m=-7/1
m=-7, now our line is
y=-7x+b, using point (-3,2) we can solve for b
2=-7(-3)+b
2=21+b
b=-19, so the completed line is
y=-7x-19
Answer:
y=−7x−19
Step-by-step explanation:
Answer choices
1) 5°
2) 175°
3) 350°
4) 87.5°
PLEASE HELP ASAP
Answers
If I made 80 my phones and brought 2/5 of them to work how many muffins did I leave at home?
Answers
Answer:
Step-by-step explanation:
76
Plz tell me if I am correct
Answers
Answer:
You are correct!
Step-by-step explanation:
9x8.5x3.5=267.75 mm³
You are correct!
Answer:
Ur correct
Step-by-step explanation:
I just did it and got the same answer.....
Do well babe<3
Write down an equation of the line L
Answers
Answer:
x = 3
Step-by-step explanation:
Because it is a horizontal line and the x-value is always going to be 3 no matter what y-value we plug in, we can say that the equation of line L is x = 3.
Identify the response variable and whether the setting involves a single sample, a matched pairs, or two independent samples.
a. A chemist obtains a reference specimen of known concentration from the National Institute of Standards and Technology. She then makes 20 measurements of the concentration of this specimen with the new method and checks for bias by comparing the mean result with the known concentration.
b. Choose 40 romantically attached couples in their midtwenties. Interview the man and woman separately about a romantic attachment they had at age 15 or 16. Compare the attitudes of men and women.
c. Another chemist is checking the same new method. He has no reference specimen, but a familiar analytic method is available. He wants to know if the new and old methods agree. He takes a specimen of unknown concentration and measures the concentration 10 times with the new method and 10 times with the old method.
Answers
Answer:
1. single sample design
2. matched pairs
3. two independent samples.
Step-by-step explanation:
the response variable is known as the dependent variable, it is the variable that the researcher is interested i finding. the response variable is the x variable that responds to changes in the independent variable.
1.
In this question the researcher has only one sample that is the specimen. that is the reference specimen that she obtained. Therefore it is a single sample design.
the response variable here is the measurement of concentration.
2. In this question we have two pairs, men and women. The researcher is interested in comparing attitudes as she interviews them. so response variable is attitude or behavior
3. this is a 2 independent sample design. The researcher is using two different methods to test and their average is being compared.
PLEASE I NEED HELP CLICK ON THIS IMAGE
Answers
Answer:mean
Step-by-step explanation:
I would assume it’s the mean since that averages the 7 test scores it represents the data set well. Outlier and mode don’t describe a data set since they are quite unique within it.
The length of a rectangle is 10 cm, which is 1/3 of it's perimeter. Evaluate its perimeter
Answers
Answer:
Perimeter = 30 cm
Step-by-step explanation:
10 cm x 3 = 30 cm
the required perimeter of the given rectangle is 30 cm.
What is the perimeter?Perimeter is the measure of the figure on its circumference.
What is a rectangle?The rectangle is 4 sided geometric shape whose opposites are equal in length and all angles are about 90°.
Here,
The length of a rectangle is 10 cm, which is 1/3 of it's perimeter.
Length = 1/3 of perimeter
10 = 1/3 perimeter
perimeter = 3 × 10
perimeter = 30 cm
Thus, the required perimeter of the given rectangle is 30 cm.
Learn more about perimeter here:
brainly.com/question/6465134
#SPJ2
Very much need some help ASAP !!
Answers
Answer:
D
Step-by-step explanation:
It cannot be Option A because the values are halve and there is nothing to distribute to them to make the values equal.
It's not option C because if you distribute 2y to each term in the parenthesis
you get -4[tex]y^{5}[/tex] + 6y³ + 4y². But where is the 8y² and -2y?
While Option B is equivalent, you can factor it out more and find the common factor of -2 to distribute among them as shown in option D
It is option D because distributing the -2y to each term solves to
-4[tex]y^{5}[/tex] + 6y³ + 8y² -2y.
Can anyone help, I got really confused doing this problem, and I can’t find the answer for it.
Answers
Answer: The area is 45 square feet
Step-by-step explanation: Use the formula (base*height)/2. Base in this case is 15, while height is 6. (15*6)/(2) It should equal 45 square feet.
Answer:
45^ft
Step-by-step explanation:
1/2 B ×H
1/2(6)×15=45^ft
Mr. Green drove 100 miles in 2 hours. He continues to drive at this same speed,
If he does not stop, how long will it take Mr. Green to drive 400 more miles?
A.5 hours
B.4 hours
C.8 hours
D.9 hours
Answers
Anthony read 1/3 of a book every day for twelve days. How many books did he read altogether?
Answers
Answer:
Step-by-step explanation:
3/36
A package of 19 medicated cough drops costs$0.99. What is the unit cost?
A.$0.08 per cough drop
B. $0.50 per cough drop
C.$0.76 per cough drop
D. $0.05 per cough drop
Answers
Answer:
i think b
Step-by-step explanation:
Answer: D
Step-by-step explanation: .99/19= .05210
PLEASE HELP!!!!!!!!!!!!
Answers
Answer:
57
Step-by-step explanation:
Hello There!
complementary angles add up to equal 90
So to find the measure of angle 2 we subtract the given angle (33) from 90
90-33=57 so the measure of angle 2 = 57
Answer: 57°
Complementary Angles add up to 90°
Since we already have 33°, we need to find the other half.
90 - 33 = 57
It'll be 57°
What is the radius of a circle whose equation is (x – 7)2 + (-10)2 = 4?
2 units
4 units
8 units
16 units
Answers
Answer:
Its A) 2 units
Step-by-step explanation:
A dilation produces a smaller figure. Which is a possible scale factor?
Answers
Answer:
:the picture dosent load bro
Step-by-step explanation:
I can't see pictures, but any number under 1 shrinks and image.
Edit: I saw your comment. It's B, because it is the only one below 1
---
sorry if this doesn't help
Simplify ..............
Answers
Answer:
The third response
Step-by-step explanation:
Please help. This is due soon. Ty 
Answers
Answer:
3 dollars and 9 cents.
Step-by-step explanation:
From the question given above, the following data were obtained:
Total amount = 20 dollars
Amount for gift A = 9 7/10 dollars
Amount for gift B = 6 2/5 dollars
Amount for gift C =?
The amount of money she has left for gift C can be obtained as follow:
A + B + C = 20
9 7/10 + 6 2/5 + C = 20
Change to improper fraction
97/10 + 32/5 + C = 20
(97 + 64)/10 + C = 20
161/10 + C = 20
Collect like terms
C = 20 – 161/10
C = (200 – 161)/10
C = 39/10
Change to mixed fraction
C = 3 9/10 dollars
C = 3.9
C = 3 dollars and 9 cents
Therefore, Kathy had 3 dollars and 9 cent for gift C
Find the missing angle according to the Triangle Exterior Angle Theorem
Answers
Answer:
x=128°
Step-by-step explanation:
90+38=128
A pipeline is placed diagonally across a rectangular field that is 25yd wide and 30yd long. How long is the pipeline, to the nearest yard?
Answers
Answer:
the pipe is 39.1 yards long.
Step-by-step explanation:
you would use pythagorean theorem (a²+b²=c²). plug the 25 in to the a² and plug the 30 in to the b² and figure out c² (it would look something like this 25²+30²=c²). to do that you need to square the 25² and the 30². the 25² would turn out to be 625 and the 30² would be 900 you would add them and get 1525. then you would squareroot 1525(
[tex] \sqrt{1525} [/tex]
) and get 39.05 and round it up and get 39.1 yards. dont forget to put the mesurements down
Given the two expressions shown below:
A. square root of 4 plus square root of 25
B. square root of 4 plus square root of 2
Which statement best describes the two expressions? (5 points)
a. Both are rational.
b. Both are irrational.
c. A is rational, but B is irrational.
d. A is irrational, but B is rational.
Answers
Consider a sample with data values of 7, 19, 8, 15, and 11. Compute the variance and standard deviation.
Answers
Answer:
standard deviation=4.472
variance=8.94437
The variance and standard deviation of the sample with data values of 7, 19, 8, 15, and 11 are 25 and 5 respectively.
What is a variance?A variable's value change could be accompanied by changes in other, related variables in a variety of ways. Variation refers to the relationship between the change in a variable's value when the values of the linked variables change.
Given:
The sample data = 7, 19, 8, 15, 11,
Calculate the Variance by the following formula,
Variance = Σ(xⁿ -m)² / t -1
Here x is the value of observation, m is the mean, and t is the total no of data.
For mean = (7+19+8+15+11) / 5
m = 12
Now substitute the values in the variation formula,
Variance = (12-7)²+(12-19)² + (12-8)² + (12-15)² +(12-11)² / 5-1
Variance = (25 + 49 + 16 + 9 + 1) /4
Variance = 25
And for deviation = [tex]\sqrt{variance}[/tex]
Deviation = [tex]\sqrt{25}[/tex]
Deviation = 5
Therefore, the variance and standard deviation of the sample with data values of 7, 19, 8, 15, and 11 are 25 and 5 respectively.
To know more about variance:
https://brainly.com/question/15811075
#SPJ5
Simplify:
n+(n+1)+(n+2)+...+[n+(n-1)]+...+(n+2)+(n+1)+n
Answers
Answer:
n=-15
Step-by-step explanation:
Answer:
n=-15
Step-by-step explanation:
I hope this helped.
Answer to #15 a,b,c,d, and e with work!
Answers
Select all expressions that are equal
Answers
Answer:
A and D. C and E
Step-by-step explanation:
A and D = -6
C and E=-14
Answer:
B and E. Both equal -14 which equals 8-12-(6+4) :)
What rule describes the translation?
Write tule as an ordered pair
Answers
For B (x+6), (y-2)
For C (x+2), (y+2)
Good luck
John is paid at an hourly-rate of $15 an hour and overtime time rate of 1.5 times
his hourly-rate for his work. If John puts in w regular hours and y overtime hours
in a week, what is his total wage for the week?
Answers
Answer:
15*w+1.5(15)*y
15w+22.5y
Week=7 days.
7(15w+22.5y)
105y+157.5y hours
Step-by-step explanation:
Members of a baseball team raised $1479.25 to go to a tournament. They rented a bus
for $800.50 and budgeted $45.25 per player for meals. Write and solve an equation
which can be used to determine p, the number of players the team can bring to the
tournament.
PLEASE HELP FAST ITS FOR A TEST
Answers
Answer:
The equation is: [tex]800.5 + 45.25p \leq 1479.25[/tex]
The team can bring at most 15 players to the tournament.
Step-by-step explanation:
They rented a bus for $800.50 and budgeted $45.25 per player for meals.
This means that the cost for bringing p players is given by:
[tex]C(p) = 800.5 + 45.25p[/tex]
Members of a baseball team raised $1479.25 to go to a tournament.
This means that:
[tex]C(p) \leq 1479.25[/tex]
So
[tex]800.5 + 45.25p \leq 1479.25[/tex]
[tex]45.25p \leq 1479.25 - 800.5[/tex]
[tex]p \leq \frac{1479.25 - 800.5}{45.25}[/tex]
[tex]p \leq 15[/tex]
The team can bring at most 15 players to the tournament.