Rewrite the function by completing the square r^2+18x+80=0
Answers
Answer:
x = -10, -8
Step-by-step explanation:
x^2+18x+80=0
Subtract 80 from each side
x^2+18x=-80
Take the coefficient of x
18
Divide by 2
18/2 = 9
Square it
9^2 =81
Add 81 to each side
x^2+18x +81=-80+81
(x+ 9) ^2 = 1
Take the square root of each side
sqrt((x+ 9) ^2 )=±sqrt( 1)
x+9 = ±1
Subtract 9 from each side
x+9-9= -9 ±1
x = -9+1 x = -9-1
x = -8 x = -10
Answer:
x+9^2=1
Step-by-step explanation:
khan academy
Related Questions
Write an equivalent expression? Explain your reasoning. (t+t+t) +7t-6/(t+t+t)+2t-3
Answers
Answer:
Step-by-step explanation:
Combine any like terms on each side of the equation: x-terms with x-terms and constants with constants. Arrange the terms in the same order, usually x-term before constants. If all of the terms in the two expressions are identical, then the two expressions are equivalent.
Answer:
10t-6/5t-3
Step-by-step explanation:
Combine any like terms on each side of the equation: x-terms with x-terms and constants with constants. Arrange the terms in the same order, usually x-term before constants. If all of the terms in the two expressions are identical, then the two expressions are equivalent.
An item is regularly priced at $65. It is now priced at a discount of 40% off the regular price. What is the price now?
Answers
Reason for is because our original price is 65 now take away 40% of that which is 26 , 65-26=39
Subtracting integers (PLEASE HELP PLEASE ALSO EXPLAIN ANSWERS PLEASE)
Answers
Answer:
n/a
Step-by-step explanation:
As there are multiple questions, I can explain the concept (lmk if you need a specific answer).
Example 1:
-5 - 2 = -7 (basically taking 2 away from -5)
Example 2:
3−(−6) = 3 + 6 -4 - (-2) = -4 + 2
- These are the main two rules I found and hopefully you found it useful.
A fruit juice recipe calls for 2 parts orange juice and 8 parts pineapple juice. Which proportion can be used to find the amount of orange juice, j, that is needed to add to 18 L of pineapple juice?
2 over 8 equals j over 18
8 over 2 equals j over 18
8 over j equals 2 over 18
16 over 18 equals j over 100
Answers
The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:
2/8 = j/18
This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:
2/8 = j/18
218 = 8j
36 = 8*j
j = 36/8
j = 4.5
Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.
Answer:
2 over 8 equals j over 18Step-by-step explanation
2 over 8 equals j over 18
This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.
So, the correct proportion is:
2 over 8 equals j over 18
What is the measurement of the longest line segment in a right rectangular prism that is 11.2 centimeters long, 6.6 centimeters wide, and 6 centimeters tall?
Answers
Answer:
Step-by-step explanation:
3.1313109
Answer: the answer should equal 3.131
Step-by-step explanation: as this is the measurement of the longest line in right rectangular prism.
Please got brainliest
a committee consisting of 4 faculty members and 5 students is to be formed. every committee position has the same duties and voting rights. there are 7 faculty members and 13 students eligible to serve on the committee. in how many ways can the committee be formed?
Answers
and
C(13, 5) = 13! / (5!(13-5)!) = (13 * 12 * 11 * 10 * 9) / (5 * 4 * 3 * 2 * 1) = 1287
Multiply these two combinations since the faculty members and students are selected independently:
Total number of ways to form the committee = C(7, 4) * C(13, 5) = 35 * 1287 = 45,045
Therefore, there are 45,045 ways to form the committee consisting of 4 faculty members and 5 students.
For faculty members:
There are 7 eligible faculty members, and we need to select 4 of them for the committee. This can be done using the combination formula:
C(7, 4) = 7! / (4!(7 - 4)!) = 35.
So, there are 35 ways to select 4 faculty members from the 7 eligible ones.
For students:
There are 13 eligible students, and we need to select 5 of them for the committee. Using the combination formula again:
C(13, 5) = 13! / (5!(13 - 5)!) = 1287.
Therefore, there are 1287 ways to select 5 students from the 13 eligible ones.
To form the committee, we multiply the number of ways to select faculty members by the number of ways to select students:
35 * 1287 = 44,895.
Hence, there are 44,895 ways to form the committee consisting of 4 faculty members and 5 students from the eligible candidates.
2(3x16)+25-96^2=?
A. -9095
B.-9055
C.-5789
D. 10236
Answers
Answer:
The answer will be A. -9095
Which measure of central tendency BEST represents the data shown in the distribution?
A.) median
B.) all three
C.) mean
D.) mode
Answers
Answer:
D.) Mode
Step-by-step explanation:
It best represents the data as it has the highest value in the distribution. All other measures of central tendency have lower values in the data.
Sorry if Im wrong
Like isn't it fun when your edge math teacher is teaching you math but doesn't explain how to do the math good so it looks like they are skipping steps.
Answers
A pickup truck carrying a thousand identical bricks weighs 6755 lb if the empty truck weighs 6240 lb what is the weight of each brick explain how to solve the problem.
Answers
Answer:
6755-6240=515
515÷1000=0.515lb
The sum of two numbers is 83. The difference of the 2 numbers is 13. What is the product of the two numbers?
A.) 1632
B.) 1650
C.) 1666
D.) 1680
Answers
Answer:
The product of 35 and 48 is 1680
Step-by-step explanation:
6x+y= -10x
what is the value of y
Answers
Answer:
y = -16x
Step-by-step explanation:
6x + y = -10x Subtract 6x from both sides
6x - 6x + y = -10x -6x
y = -16x
Helping in the name of Jesus.
explanation:
Move all terms not containing y to the right side of the equation
An ordered pair of the function d(t) = 35t is _____.
(35, 35)
(35, 1)
(1, 35)
(1, 1)
Which ordered pair is not a solution of f(x) = 2x + 9?
(7, 23)
(3, 14)
(2, 13)
(0, 9)
Answers
the answer to the second one is (3,14)
Find the solution set of the inequality.
10c + 5 ≤ 45
Answers
-
-4d -3 + 5d4 - 8d4 + 7
Answers
Answer:
-3d4 - 4d + 4
Step-by-step explanation:
5d4 - 8d4 and -3+7
-3d4 - 4d + 4
Evaluate
5d ⁴ −8d ⁴
Collect like terms
(5−8)×d ⁴
Then Add the coefficients −3d ⁴
Make an Essay about Using Sentence Patterns (PLEASE HELP)
Answers
Answer:
Step-by-step explanation:
you just like use a sentence pattern yo
There are four types of sentences: simple, compound, complex, and compound-complex. Each sentence is defined by the use of independent and dependent clauses, conjunctions, and subordinators.
A baseball coach order hats for his team. Each hat cost $10. The shipping charger is $6. The total cost of the order must be less than $125. Which inequality can be used to solve?
Answers
10h + 6 < 125
Answer:
10x + 6 < 125
Step-by-step explanation:
Hi,
10x is the cost per hat. 6 is the charging fee. 125 is the total cost of the order. We put x because we don't know how many hats they're going to buy. 6 is the amount they pay no matter what. And < is used because the total cost has to be less than 125, not less than or equal to, but LESS than.
Hope this helps
Can someone please help me with this
Answers
Answer:
C
Step-by-step explanation:
2 to the fourth power is 2 x 2 x 2 x 2
Answer:
It’s C = 16
Step-by-step explanation:
Cuz it’s asking u what’s the answer if u multiply 2 for 4 times?
The equation for the Denver to Chicago situation is:
d = t. 610
in your own words, describe the equation's meaning. What does each part of the equation represent?
Answers
It should be noted that the equation for the Denver to Chicago situation is d = t. 610. This implies that the distance is 610 miles multiplied by the time taken.
How to illustrate the information?It should be noted that an equation is used to show the relationship that can be found between the data or variable that are given.
Based on the information, should be noted that the equation for the Denver to Chicago situation is d = t. 610. This implies that the distance is 610 miles multiplied by the time taken.
It should be noted that d represent the distance and t represented the time.
Learn more about equations on:
brainly.com/question/13763238
#SPJ1
T = Time
And the 610 is how many miles it is.
So, Distance = Time
What is the relationship between the value of the 4 in 3,642 and the value of the 4 in 5,401?
Answers
Answer: The 4 in the number 5,401 is 10 times greater than the 4 in the number 3,642.
In the number 3,642 the number 4 is in the Tens Place.
In the number 5,401 the number 4 is in the Hundreds Place.
Tens < Hundreds
40 < 400
Q: How do we know it's 10 times greater?
A: Multiply!
You multiply 40×10 and get 400! To see if the answer is right divide 400÷40 and get 10. Or divide 400÷10 and get 40.
Basically, when you're multiplying something by 10 you just add a 0. When you divide by 10 you remove a 0.
That's how the number 4 in 5,401 is 10 times greater than the number 4 in 3,642.
PLEASE HELP! WILL MARK BRAINLIEST!
Answers
Answer:
1) x^2-x-12
2) 3x
3)x^2-4x-12
4)x=10
5) total area 30, dimensions 3 by 10
Step-by-step explanation:
work and explanation in image
Answer:
1) x^2-x-12
2) 3x
3)x^2-4x-12
4)x=10
5) total area 30, dimensions 3 by 10
Step-by-step explanation:
Brody calculated the area of a square to be 16/36
square foot.
Which shows the side length of the square?
Answers
Answer:
Step-by-step explanation:
Area of a square = length²
If the area of a square is given, in order to determine the length, find the square root of the area.
√16 / 36 = 4/6 foot
what are reflex angles? I don't know what they are so just tell me in the most simple way possible of what reflex angles are so I can understand plz. Also can you tell in the simplest way how to solve a reflex angle problem? Thank you, Have a good day :)
Answers
Answer:
A reflex angle is an angle that is always bigger than 180 but smaller than 360. So for example 270 is a reflex angle.
Step-by-step explanation:
the same thing as an obtuse angle!
Step-by-step explanation:
a angle that is more than 90 degrees but less than 180 degrees. not sure what a reflex problem is but if you give it to me I can try and help!
I need help i'm struggling. Number 4 and up I guess.
Answers
Answer:
1: 8/15
2: -4.2
3: 15.68
4: -1/24
Please answer quick
Solve the given inequality and graph the solution on a number line. - x/2 + 3/2 < 5/2
Answers
Answer:
x can be transformed into -1/2x
-1/2x / -1/2=x
1/-1/2=-2
x>-2
Step-by-step explanation:
Tell me if it’s too confusing or if you got it hope it help sorry if it didn’t
What is the volume of the box if it is scaled down by a factor of 1/10?
V= 308 35/64
Answers
Answer:
explanation will answer.
Step-by-step explanation:
To convert this fraction to a decimal, just divide the numerator (35) by the denominator (64). So, 35 / 64 = 35 ÷ 64 = 0.546875. Approximated Values: 35 / 64 = 0.5 rounded to 1 significant figure. 35 / 64 = 0.55 rounded to 2 significant figures. 35 / 64 = 0.547 rounded to 3 significant figures.
Answer:
To convert this fraction to a decimal, just divide the numerator (35) by the denominator (64). So, 35 / 64 = 35 ÷ 64 = 0.546875. Approximated Values: 35 / 64 = 0.5 rounded to 1 significant figure. 35 / 64 = 0.55 rounded to 2 significant figures. 35 / 64 = 0.547 rounded to 3 significant figures.
Step-by-step explanation:
1. Explain what the food chain is. Give an example of each level of the food chain.
2. Which trophic level receives the most energy captured by plants?
3. By eating higher up the trophic level, what are humans contributing to?
4. What happens to most of the energy that enters the tropic level?
5. What percent of energy from one tropic level gets passed to another? Explain.
Answers
SORRY my answer got deleted somehow, but. A food chain refers to a sequence of organisms arranged according to the food they consume. The second part of the first question is Producers, consumers, predators, prey, scavengers, and decomposers. i hope this helped i cant answer all of them for you :D
A salesperson's commission rate is 5%. What is the commission from the sale of $31,000 worth of furnaces? Use pencil and paper. Suppose sales would double. What would be true about the commission? Explain without using any calculations.
Answers
Answer:
31,000 divided by 5 = 6200
Step-by-step explanation:
Steel sheeting costs 2¢ per square inch. How much will David spend to build the model out of steel? Write your answer as a dollar amount.
Answers
i give brainllyist 6/15 + 3/10 + 3/5
Answers
The answer to this question is 39/30 or 1 3/10. Hope this helps!
Answer:
39/30 or 1.3
Step-by-step explanation:
make them have a common denominator which is 30
(6/15)*2 + (3/10)*3 + (3/5)*6 = 12/30 + 9/30 + 18/30
12/30 + 9/30 + 18/30 = 39/30 = 1.3