Answers
Answer:
(b) The result of adding two polynomials is always a polynomial.
Step-by-step explanation:
A set is "closed" under a particular operation if performing that operation on members of the set always results in a member of the set.
Adding two polynomials always results in a polynomial, so we can say "polynomials are closed under addition."
Related Questions
What is the value of the expression?
A++
1
A
mloo Loonloon
(B)
32
Answers
Step-by-step explanation:
1) Simplify the fractions....
\begin{gathered}2^{-3} = 1/8\\2^{-2} = 1/4\end{gathered}
2
−3
=1/8
2
−2
1/8 + 1/4 = 3/8
Hope its Helps youWhat is an equation of the line that passes through the points (3,6) and (-1,-6)
Answers
Answer:
the slope is 3
Step-by-step explanation:
use the equation
y2 -y 1 / x2 - x1
to find the slope
6 - (-6) / 3 - (-1)
6 + 6 / 3 + 1
12 / 4
3
jenny worked on an art project for 4 3/4 hours. She spent 2/3 of the time drawing and painting. How many hours did she spend drawing and painting
Answers
Answer:
3.16
Step-by-step explanation:
Because 4 3/4 divided by 2/3 is 3.16666666667 and 3.16666666667 simplified is 3.16. So 3.16 is the answer.
Hope this helps!
60 percent of $2million
Answers
Answer: $1,200,000
Step-by-step explanation:
50% would be 1 million, and 10% of 2 million would be 200,000, so if you add those two together, you get the total of $1,200,000
A hollow post is made out of a lightweight aluminum alloy that is 1.5 cm thick. The alloy is folded into the shape of a right rectangular prism measuring 9 cm by 9 cm by 28 cm. Find the total volume of alloy in the post. Round your answer to the nearest hundredth if necessary.
Answers
The total volume of alloy in the post is about 900 cm³
What is a volume?
Volume is the amount of space occupied by a three dimensional shape or object.
Volume = length * width * height
The right rectangular prism measuring 9 cm by 9 cm by 28 cm. The alloy is 1.5 cm thick.
Length = 9 - 1.5 - 1.5 = 6 cm, width = 9 - 1.5 - 1.5 = 6 cm, height = 28 - 1.5 - 1.5 = 25 cm. Hence:
Volume = 6 * 6 * 25 = 900 cm³
The total volume of alloy in the post is about 900 cm³
Find out more on volume at: https://brainly.com/question/12410983
Answer:
1837.5
Step-by-step explanation:
I jut did it
Question
A gift box in the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box?
The least amount of wrapping paper need is
square inches
Question
A gift box in the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box?
The least amount of wrapping paper need is
square inches
Question
A gift box in the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box?
The least amount of wrapping paper need is
square inches
Answers
Answer:
448
Step-by-step explanation:
[(8x8)4]+[(8x10)2]
448
This data set represents the number of cups of flour used in different recipes. What is the mean of this data set? {1/2, 1/3, 2/3, 1 1/2} Enter your answer as a fraction in simplest form in the box. Will give Brainiest to FIRST CORRECT answer!!
Answers
Answer:
what is the answer
Step-by-step explanation:
I'm doing the test right now
what’s 34 + 2x = 49??? I NEED HELP
Answers
34 + 2x = 49
minus 34 from both sides
2x = 15
divide both sides by 2
x = 7.5
(to confirm 2x = 15, 34 + 15 = 49)
Answer:
x = 7.5
Step-by-step explanation:
Use algebraic manipulation (and remember that anything you do to one side must be done to the other, in most cases):
34 + 2x = 49
-34 -34
2x = 49 - 34
2x = 15
x = 7.5
∠A and
∠
B
∠B are supplementary angles. If m
∠
A
=
(
7
x
+
7
)
∘
∠A=(7x+7)
∘
and m
∠
B
=
(
4
x
−
14
)
∘
∠B=(4x−14)
∘
, then find the measure of
∠
B
∠B.
Answers
angle A+ angle B = 180
(7x+7)+(4x-14)=180
Combine like terms
11x-7=180
11x=187
x=187/11
x=17
Insert x value.
4(17)-14
68-14
54.
Measure of A would be
7(17)+7
126
54+126 is 180 so they are supplementary.
Again, measure of angle B is 54
What is 300 x 2? Thank you!
Answers
Answer: 600!
Step-by-step explanation:
The cost of an afternoon movie ticket was $4.00.
This year an afternoon movie ticket costs $5.00.
What is the percent increase of the ticket from last
year to this year?
A. 10%
B. 20%
C. 25%
D. 40%
Answers
Answer:
c
Step-by-step explanation:
25% of 4 or 4 divided by 4 is 1. 1+4 is 5
Which quadratic equation is equivalent to (x – 4)2 – (x – 4) – 6 = 0?
(u – 4)2 – (u – 4) – 6 = 0 where u = (x – 4)
u2 – (u – 4) – 6 = 0 where u = (x – 4)
u2 – 16 – u – 6 = 0 where u = (x – 4)
u2 – u – 6 = 0 where u = (x – 4)
Answers
Answer:
see below.
Step-by-step explanation:
letting u = x - 4 means the equation can now be expressed as a quadratic
u² - u - 6 = 0 ← quadratic equation in u
Answer: (D)
Step-by-step explanation:
The population of Florida has increased, on average, at a rate of 8% per year since 1953. In 1993, the population of Florida was 13 million.
What was the population in 1953?
*show work & will give brainliest*
Answers
Answer:
598,402
Step-by-step explanation:
Let y = population at year x
x is the number of years since 1953, so for 1993, x = 40
a = population in 1953
y = a(1.08)^x
In 1993, the population is 13,000,000, so y = 13,000,0000 when x = 40.
13,000,000 = a(1.08)^40
13,000,000 = 21.7245a
a = 598,402
Answer: 598,402
C = 4+0. 10t what is the charge to rent a paddle boat for 20 minutes?
Answers
James had $400 in his bank account. After
paying bills for 4 months, his balance is now
$160. What is his rate of change in dollars per month?
A.40
B.-40
C.60
D.-60
Answers
Answer:
C
Step-by-step explanation:
400-160=240
240/4=60
Sammy starts with $50 in her saving account and adds $50 each week. Write an equation that Sammy can use to show how much money she has after a certain number of weeks
Answers
Known facts:
50 dollars is the initial amount in the saving account50 dollars is added every week into the savings account.Variables:
x: # of weeksy: total amount of money in savingsSet equation based on known facts and variables:
y = 50x + 50, 50x is the rate at which it grows depending on
the week and 50 is the initial amount there
Hope that helps!
I need help Solveing for X
Answers
Answer:
x = 57°
Step-by-step explanation:
23° + 100° + x = 180°
123° + x = 180°
-123 -123
x = 57°
Hope this helps!
ASAP!
Emma invested $750 in an account paying an interest rate of 1. 9% compounded
quarterly. Assuming no deposits or withdrawals are made, how long would it take, to
the nearest tenth of a year, for the value of the account to reach $910?
Answers
Answer:
the answer is 2.6 show in the workings below
.
Factor completely 4x3 8x2 − 25x − 50. (4x2 − 25)(x 2) (2x − 2)(2x 2)(x 5) (2x − 5)(2x 5)(x 2) (2x − 5)(2x 5)(x − 2).
Answers
Answer:
(2x − 5)(2x + 5)(x + 2)
Step-by-step explanation:
i hope this helps
Please Help 20 Points
Answers
Answer:
3x^2+4x+1Step-by-step explanation:Given the polynomial function 4x + 3x^2 - 1Rearranging in descending order means that we are to arrange the degree power from the highest to the lowest.The term with the highest degree is 3x^2Followed by 4xThen the constant 1Adding according to the descending powersThe polynomial in descending order will be 3x^2+4x+1D is the answer:)Question 9 of 25
Which parent function is represented by the graph?
104
10
10
-10
A. The absolute value parent function
B. The linear parent function
C. An exponential parent function
D. The quadratic parent function
Answers
C. An exponential parent function
The given function is an exponential parent function the correct option is C.
What is the exponential parent function?Algebraic expressions appear in the exponent of exponential functions. The formula for their parent function is y = bx², where b is any nonzero constant. The graph of the parent function, y = ex².
In the graph, we can see that the function is varying exponentially from -10 to 10.
Therefore, the given function is an exponential parent function the correct option is C.
To know more about an exponential parent function follow
https://brainly.com/question/2456547
#SPJ2
I need help with question 5 please help me
Answers
What is the solution of startroot negative 4 x endroot = 100? x = –2500 x = –50 x = –2.5 no solution
Answers
Hey there!
-√4x = 100
WELL….
-√4 = -2
NEW EQUATION:
-2x = 100
DIVIDE -2 to BOTH SIDES
-2x/-2 = 100/-2
CANCEL out: -2/-2 because it give you 1
KEEP: 100/-2 because it help solve for the x-value (mainly give you it)
NEW EQUATION: x = 100/-2
SIMPLIFY IT!
x = -50
Therefore, your answer is: x = -50
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Answer:
B-X=-50
Step-by-step explanation:
Need help ASAP (IMAGE ATTACHED)
Answers
Answer:
The answer is B
Step-by-step explanation:
It becomes 8y = -3x + 12.
Then divide by 8 on both sides.
y = -0.375+1.5
This you can turn it into a fraction which is y = -3/8 + 1.5
What is the factorization of 49b2 − 81? (7b – 9)(7b – 9) (7b – 9)(7b 9) (7b2 – 9)(7b2 – 9) (7b2 – 9)(7b2 9).
Answers
answer : (7b+9)(7b-9)
Can someone help with this math problem pleaseeee
Answers
Explanation:
The square root undoes the squaring operation.
Think of a square that is 1 ft by 1 ft. Its area would be 1*1 = 1 sq ft.
Now imagine you told your friend "the area is 1 sq ft" and you didn't relay the side lengths. Your friend would use the square root to find the side length is 1 ft.
I'm not sure why your teacher is using plus minus notation when that is not correct. Saying [tex]\sqrt{1} = \pm 1[/tex] is not true. The result of a square root is simply one value only. If your teacher meant [tex]\pm \sqrt{1} = \pm 1[/tex], then it would be a true statement; however, there's no need to involve negative numbers for this problem.
A restaurant uses 4⁄5 ounce of gravy for each serving of meat loaf. If 45 people ordered meat loaf, how much gravy will the restaurant need in ounces?
Answers
Step by step:
4/5 x 45 make 45 into a fraction
4/5 x 45/1 multiply
180/5 simplify
34 (ounces)
Answer:
The correct answer is 36 ounces
Step-by-step explanation:
An expression is shown below (x^4/3)(x^2/3). What is the product of the two factors?
Answers
Answer:
x^2
Step-by-step explanation:
(x^4/3)(x^2/3)
When we multiply the exponents with the same base, we add the exponents
x^(4/3+2/3)
x^(6/3)
x^2
Use the information below to answer 1–3.
Three students are playing a video game. Each player is randomly
assigned a character from a collection of characters that includes
5 blue, 6 green, and 3 red characters. After each character is picked,
it is not replaced in the collection.
1. What is the probability that the first player does not get a blue character?
Answers
Answer:
The probability the 1st player does not get a blue chracter is 9/14.
Step-by-step explanation:
So there is a total of 14 characters.
9 of them are not blue
9/14 = .642857 (~64%, not the answer since it's not asking for percents)
The probability the 1st player does not get a blue chracter is 9/14.
Enter your answer and show all the steps that you use to solve this problem in the space provided.
Find the values of x and y.
Answers
Step-by-step explanation:
The figure shows an isosceles triangle. The two sides of an isosceles triangle are equal and the two base angles are equal. Since line AD is the angular bisector of the top Angle of an isosceles triangle, AD is also the base midline and base perpendicular bisector of the triangle.
So x=90 degrees.
The angles of a triangle add up to 180 degrees. So ∠DAC=(180-90-47)=43 degrees
y=43 degrees.
Answer:
y = 43°
x = 90°
Step-by-step explanation:
x = 90°(right angle)
y + 47 + x = 180(base angles of isosceles are equal)(all angles of triangle are equal)
y + 47 + 90 = 180
y + 137 = 180
y = 180 - 137
y = 43°