PLEASE HELP WILL GIVE 30 POINTS
Add or subtract. Show your work for each problem
a. (x^2-4x+5)+(7x^2+2x-3) b. (7x^2+4x-6)-(2x^2-3x+1)
To solve this problem you must apply the proccedure shown below:
a) You must sum terms with same exponents, therefore, you have that the sum of these two polynomials is:
[tex] (x^{2}-4x+5)+(7x^{2}+2x-3) [/tex]
[tex] 8x^{2} -2x+2 [/tex]
b) First, you must mulitply the signs of the second polynomial by the negative sign, and them, you apply an algebraic sum. Therefore, the result is:
[tex] (7x^{2}+4x-6-2x^{2}+3x-1) \\ 5x^{2} +7x-7 [/tex]
The answers are: a)[tex] 8x^{2} -2x+2 [/tex]; b) [tex] 5x^{2} +7x-7 [/tex]
a)
x² - 4x + 5 + 7x² + 2x - 3
8x² - 2x + 2
b)
7x² + 4x - 6 - (2x² - 3x + 1)
7x² + 4x - 6 - 2x² + 3x - 1
5x² + 7x - 7
Which of the following represents “the sum of the abscissa and the ordinate is negative four”?
A. x + y = -4
B. xy = 4
C. 4x + 4y = 0
What is the equation in point-slope form of the line passing through (2,2) and (4,8)
Is this right. If so what’s the correct answer
which questions are good examples of a statistical question? check all that apply
a. How many pets do you have
b. do you think a pet is a lot of work?
c. do you like having a pet?
d. how many times a day do you feed your pet?
e. do you feed your pet at night?
Answer:
A and d are pretty good questions
If the sles tax price je 162 and had a markdown of 1/4 what is the original price
Ari bought a DVD that originally cost $15 on sale for 20% off. The sales tax is 5%. How much did Ari pay for the DVD, including tax.
Can anyone PLEASE help me with this? Will mark brainliest
Simplify the expression.
2 1/4x+(4 1/3x-7 4/5) divided by 2 3/5
Describe two ways that an exterior angle of a triangle is related to one or more of the interior angles.
29 plus j is equal to the quotient of 77 and j
Write as an equation
If Mary deposits $275 in principal at an interest rate of 3.2 percent,how much interest will she earn in one year
Final answer:
Mary would earn $8.80 in interest after one year on her deposit of $275 at an annual interest rate of 3.2%, using the simple interest formula.
Explanation:
To calculate the amount of interest Mary would earn from her deposits of $275 at an annual interest rate of 3.2%, we can use the formula for simple interest, which is:
Interest = Principal × rate × time
In this case, Mary's principal is $275, the rate is 3.2% (or 0.032 when expressed as a decimal), and the time is 1 year. Plugging these values into the formula gives us:
Interest = $275 × 0.032 × 1
Interest = $8.80
Therefore, Mary would earn $8.80 in interest after one year.
PLEASE HELP ME I BEG YOU PLEASE PLEA PLEASE
Solve 2x + y + z = 5
4x – 2y – z = 0
3x – y + 2z = 6
(1, 1, 2)
(-1, -1, -2)
(5, 0, 6)
(1, 1, -2)
Solve 3x + 6y – 6z = 9
2x – 5y + 4z = 6
-x +16y + 14z = -3
(5, 0, 1)
(9, 6, -3)
(0, 3, 0)
(3, 0, 0)
Solve –x + y + 2z = 2
2x – y + z = 5
-4x – y + 3z = 3
(2, 5, 3)
(0, 4, -1)
(1, -1, 2)
(-1, 1, -2)
Solve –x + 3y + z = 9
2x + 5y = 27
3x + y – 2z = -18
(1, 3, -2)
(21, -3, 39)
(1, 2, -4)
(22, -1, 26)
Solve x – 2y – 3z = 3
3x + y + z = 12
3x – 2y – 4z = 15
(0, 0, -1)
(3, 12, 15)
(3, 9, -6)
(-3, -9, 6)
Solve x + 3y + z = 1
2x – y – z = 6
5x + y + z = 1
(1, 6, 1)
(1, 2, -6)
(2, 1, -4)
(-1, -2, 6)
Answer:
The first one is (1, 1, 2)
The second one is (3, 0, 0)
The third one is (1, -1, 2)
The fourth one is (21, -3, 39)
The fifth one is (3, 9, -6)
The sixth one is (1, 2, -6)
At a concession stand, three hot dogs and two hamburgers cost $7.75;two hot dogs and three hamburgers cost $8.50. Find the cost of one hot dog and the cost of one hamburger
if a + 8 = 11 what is the value of 8a
The probability that an event will occur is fraction 7 over 8. Which of these best describes the likelihood of the event occurring? a.Likely b.Certain c.Unlikely d.Impossible
Answer:
A
Step-by-step explanation:
A is the correct answer because, 7/8 is very likely. It isn't certain though. There is a 12.5 % chance that it can occur.
HEEEEEEEEEEEEEEEEELP
find f when 27f=81 f=
How can you estimate to find the percent of a number? Please give a full explanation.
(do not use an example to demonstrate)
Carl ran 27 miles last week. This is 3 times farther than Anna ran. Which equation can be used to find how many miles Anna ran?
how many square feet of outdoor carpet will we need for this hole
Answer: 36 sq
Step-by-step explanation: you add 24 to 12 and get 36
Answer:
[tex]36\text{ inch}^2[/tex]
Step-by-step explanation:
We have been given an image of outdoor carpet needed for a hole. We are asked to find the area of outdoor carpet needed for this hole.
We can see that there are two pieces needed to cover the given hole.
One pieces equal 24 square inches and another pieces equal 12 square inches.
[tex]\text{Area of carpet needed to cover the hole}=24\text{ inch}^2+12\text{ inch}^2[/tex]
[tex]\text{Area of carpet needed to cover the hole}=36\text{ inch}^2[/tex]
Therefore, [tex]36\text{ inch}^2[/tex] of carpet is needed to cover the given hole.
Tickets are priced as follows:
Adult Tickets -£12
Child Tickets -£6
Cheryl rings the booking office to buy 6 adult tickets and 3 child tickets
She is told that a 10% booking fee will be added to the ticket price
2% will then be added if she is paying by credit card
Work out the total charge that Cheryl will have to pay if she uses her credit card to pay for the tickets
Answer:
down there
Step-by-step explanation:
£72 + £18 = £90
90 x 12%= £9 + £1.80
£90 + £10.80 = £100.98
What is 3/4 of a year ? Write in months.
A popular brand of running shoes costs a local store $68 for each pair. If the store sells the shoes for $119, what is the percent of increase in the price?
Tennis balls are sold in tubes that hold 3 tennis balls each. A store stacks 2 rows of tennis ball tubes on its shelf. Each row has 7 tubes in it. How many tennis balls are there in all?
There are a total of 42 tennis balls on the shelf.
To determine the total number of tennis balls on the shelf, we first need to find out how many tennis ball tubes are there. Each row has 7 tubes and there are 2 rows:
Number of tubes per row = 7
Number of rows = 2
Total number of tubes = 7 tubes/row × 2 rows = 14 tubes
Since each tube contains 3 tennis balls, we multiply the total number of tubes by the number of tennis balls per tube:
Number of tennis balls per tube = 3
Total number of tennis balls = 14 tubes × 3 tennis balls/tube = 42 tennis balls
Therefore, the store has a total of 42 tennis balls on the shelf.
Use the formula V = s³, where V is the volume and s is the edge length of the cube, to solve this problem. A cube-shaped bin has an edge length of 34 yard. What is the volume of the container? Enter your answer, as a fraction in simplest form, in the box.
The arena intends to give a gift box to each company that hires a stand at the event. Select from the options below the nets which will fold up into a cube.
The sides of a right triangle have a relationship as depicted below, where x is the length of the longer leg in inches.
The area of this triangle, A, is equal to the perimeter of this triangle.
Create a system of equations to model this situation. Determine if there are any solutions, and, if possible, whether or not they are viable.
How many total possible solutions are there to this system?
Of any possible solutions, how many are viable solutions for this situation?
Answer:
two possible and one viable
Step-by-step explanation:
hope this helps!
Pedro was simplifying four over seven divided by five over eight. and his work is shown below. Identify where he made his error. Original problem: four over seven divided by five over eight. Step 1: four over seven multiplied by eight over five . Step 2: four times five over seven times eight. Step 3: twenty over fifty-six. Step 4: five over fourteen.
Answer: it's the 2nd step
Pedro made an error in step 2, he crossed multiplied instead of multiplying.
What is a fraction?Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
We have:
Pedro was simplifying four over seven divided by five over eight.
= (4/7)/(5/8)
= (4/7)x(8/5)
= 32/35
In Step 2 Pedro made mistake, he crossed multiplied instead of multiplying the numerators, and then the denominators.
Thus, Pedro made an error in step 2, he crossed multiplied instead of multiplying.
Learn more about the fraction here:
brainly.com/question/1301963
#SPJ2
If 5 lemons are used to make a gallon of lemonade,how many lemons are needed to make 3 gallons
A right circular cylinder has a volume of 1296 cubic inches. If you divide the radius of the cylinder by 12, what would be the volume of the smaller cylinder?