PLEASE HELP WILL GIVE BRAINLIEST.
The line y=-3x - 8 is graphed below. What additional line would create a system of equations with a solution of (-4,4)?
Answer
A y = 2x + 10
By= 3x + 1
C y = 3x - 9
Dy - 3x + 6
Answers
Answer:
Choice D
Step-by-step explanation:
For this one I would find if the point lands on the line.
Choice A:
What we have to do is to plug in -4 for x and 4 for y.
[tex]y=2x+10\\(4)=2(-4)+10\\4=-8+10\\4\ne2[/tex]
The point is not on this line so this cannot be it.
Choice B:
We pug what we know again.
[tex]y=\frac{1}{3}x+1\\(4)=\frac{1}{3}(-4)+1\\(4)=-\frac{4}{3}+1\\4\ne-\frac{1}{3}[/tex]
The point is not on this line so it can't be it.
Choice C:
We pug in what we know again.
[tex]y=3x-9\\(4)=3(-4)-9\\(4)=-12-9\\4\ne-21[/tex]
The point is not on this line so it can't be it.
The next one has to be it, but we'll check it just in case.
Choice D:
We plug in what we know again.
[tex]y= \frac{1}{2}x+6\\(4)=\frac{1}{2}(-4)+6\\(4)=-2+6\\4=4[/tex]
The point is on this line so this is the line.
Related Questions
write in standard form if needed classify the polynomial 14y^2-x^2-3xy
Answers
Therefore, we can classify the polynomial as a quadratic polynomial.
What is polynomial?A polynomial is a mathematical expression that consists of variables and coefficients, and involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents. Polynomials can have one or more variables and may contain multiple terms. Each term consists of a coefficient and a variable raised to a power. The degree of a term is the power to which the variable is raised, and the degree of a polynomial is the highest degree of any of its terms. Polynomials are used in many areas of mathematics, science, and engineering, such as algebra, calculus, geometry, and physics. They are used to model real-world phenomena, to solve equations, and to approximate complex functions.
Here,
To write the polynomial 14y² - x² - 3xy in standard form, we need to arrange the terms in descending order of degree (highest degree term first) and combine like terms.
First, let's rearrange the terms:
x² - 3xy + 14y²
Now, the polynomial is in descending order of degree. We don't need to do anything else to put it in standard form.
To classify the polynomial, we count the number of terms and the highest degree of those terms. In this case, there are three terms and the highest degree term is 14y², which has degree 2.
To know more about polynomial,
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To manufacture scooters, the manufacturer has a fixed cost of 34,400$$ plus a variable cost of n $$ per scooter. Find 100$$, the number of scooters that need to be produced so that the average cost per scooter is 180$$.
Answers
Answer:
The number of scooters that need to be produced so that the average cost per scooter is $180 is 430 scooters.
Step-by-step explanation:
Note: This question is not properly structured/written. The question is therefore rewritten properly before answering the question as follows:
To manufacture scooters, the manufacturer has a fixed cost of $34,400 plus a variable cost of $100 per scooter. Find n, the number of scooters, that need to be produced so that the average cost per scooter is $180.
The explanation of the answer is now provided as follows:
The number of scooters can be calculated as follows:
Variable cost per scooter = $100
n = number of scooter = ?
Total variable cost = Variable cost per scooter * n = $100 * n = $100n
Total cost = Fixed cost + Total variable cost = $34,400 + $100n
Average cost per scooter = Total cost / n = $180 ................ (1)
Substituting the value for Total cost into equation (1) and solve for n, we have:
($34,400 + $100n) / n = $180
$34,400 + $100n = $180n
$34,400 = $180n - $100n
$34,400 = $80n
n = $34,400 / $80
n = 430
Therefore, the number of scooters that need to be produced so that the average cost per scooter is $180 is 430 scooters.
what is 4/5 times 4?
Answers
Answer:
3.2
Step-by-step explanation:
f(x)= 3x² +x-2, then f(-2)
Answers
Answer:
12
Step-by-step explanation:
just substitute the value in the equation
Please help somebody this is really hard.
Answers
7.5 mph
3/4=.75 miles per 1/10 hour
.75x10=7.5
24 * 5 is equal to 12 * ?
Answers
10
Step-by-step explanation:
24*5=12*10
120=120
what’s the mean (average) for the data 12 4 16 20
Answers
Answer:
13
Step-by-step explanation:
Add all of the numbers, and divide by the amount of numbers. In this instance, all four added together numbers is 52, and divided by 4 is 13. Hope this helps!
Answer:
The answer is 13.
Step-by-step explanation: In order to find the average in a set of numbers, you must add all numbers and divide them by the numbers of numbers which you have added.
For example for your problem, I added 12 + 4 +16 +20 and I got 52. Then count the numbers which u have added. There are 4 numbers I have added. Then divide that number by the total. So it would be 52/4 and once you divide, you have your answer!
Hope this helps!
Question 3
True or false. A discount will add to the total cost you
will pay for an item.
Answers
Answer:
False
Step-by-step explanation:
Solve the inequality below 3-1/2x ≤ 11
Answers
X is greater than or equal to -16.
3 (2 + q) + 15 simplified
Answers
Answer:
3q+21
Step-by-step explanation:
Answer:
well i think you distribute the 3 to the two and the q so you multiply 3 * 2 = 6
3 * q = 3q then you add 6 + 3q = 9q
Step-by-step explanation:
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answers
So subtract both values given from 180
180 - 111 = 69, 69 - 41 = 28
X = 28
4(0.5f−0.25)=6+f Solve for f
Answers
Answer:
F=4
Step-by-step explanation:
Answer:
4 (0.5f -0.25) = 6 + f (distribute to get rid of the parenthesis)
2f - 1 = 6 + f (subtract f from both sides)
f - 1 = 6 (add 1 to both sides)
f = 7
Loch ness is the largest lake in Scotland.
The lake has a volume of water of 7.45x10^9 m^3.
The volume of water in Lake Superior is k times the volume of water in Loch ness.
Lake Superior = 8.21x10^10
Work out the value of k.
Give your answer correct to 3 significant figures.
Answers
Answer:
11.020
Step-by-step explanation:
vol of l.supe = k(lochness)
88.21 * 10^10 = k( 7.45 * 10^9)
divide and k =11.020
in fraction = 1642/149
Three friends map their houses on a coordinate grid. Alex's house is located at point (7, 18). Jimmy's house is at point (-9, 7). Jimmy's house is located halfway between Alex's house and Kara's house. Which ordered pair represents Kara's house?
A (1, 12.5)
B. (24,-4)
C. (-25,-4)
D. (2,25)
Answers
if I have 19 red marble and 22 white marble. what is the ratio
Answers
Answer:
19:22
Step-by-step explanation:
you put red first since it came first
please help me write in exponential notation ASAP
Answers
Answer:
The answer is 3⁴ or 81 :)
Help I’m bad at math
Answers
Answer:
None of the answers are correct.
Step-by-step explanation:
Maria's answer is incorrect:
1. "-1" is the y-intercept. 3x/4 is your rise/run.
2. Start from -1 on the y-axis.
3. Go up 3 units above, then 4 units to the right.
4. This leads up to being not on the line.
Peter's answer is incorrect:
1. "-1" is the y-intercept. -4x/3 is your rise/run.
2. Start from -1 on the y-axis.
3. Go down 4 units below, then 3 units to the right.
4. This leads up to being not on the line.
I NEED HELP ASAP IT IS DUE AT MIDNIGHT PLEASEEEEEE!!!!
Answers
Answer:
A = -2.2
B = -1.7
C = 1.87
D = 19.97
Step-by-step explanation:
A = 7.4 - 9.6 = -2.2
B = -2.2 + 0.5 = -1.7
C = -1.1(-1.7) = 1.87
D = 18.1 + 1.87 = 19.97
Answer:
A = -2.2
B = -1.7
C = 1.87
D = 19.97
Step-by-step explanation:
Tammy made a recipe that called for 3/4 teaspoon of salt. If the recipe is cut in half, how much salt is needed?
Answers
Answer:
answer is A your welcome
Answer:
If the recipe is cut in half, 3/8 teaspoon of salt is needed.
Step-by-step explanation:
Since the recipe is cut in half, we need to find 1/2 of 3/4. This means we need to multiply 1/2 times 3/4. For the numerator, 1 times 3 equals 3. For the denominator, 2 times 4 equals 8. The fraction is 3/8.
What is the perimeter?
Answers
Answer:
26
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
6 +6=12
12+3=15
15+2=17
17+4=21
Please help! will mark brainliest if correct!
Answers
Answer:
points
Step-by-step explanation:
Which systems of equations intersect at point A in this graph?
Answers
Y = 4 x - 9
y = - 3 x - 5
I hope this will help you
i looked this up and this is what i got
A cyclist tide his a bike at a speed of 27 miles per hour. What is this speed in miles per minute? How many miles will the cyclist travel in 15 minutes? Do not round your answers
Answers
Answer:
0.45 miles per minute and 6.75
Step-by-step explanation:
27/60=0.45<-- Miles per minute
0.45x15=6.75<--Miles in 15 minutes
Hope this helps pls give brainliest
|14 | + l -3 l =
Pls help meereeeerrrrr
Answers
Answer:
What…
Step-by-step explanation:
Fabulous fitness charges a one time fee of $90 and an additional $25 per month wonder weights charges a one time fee of only $ 27 dollars but charges an additional $32 each month for how many months is fabulous fitness less expensive than wonder weights? Set up and solve an equality to determine your answer
Answers
Answer:
9 months
Step-by-step explanation:
Given
Fabulous fitness charges a one-time fee of $90 and an additional $25 per month
let the number of months be x
and the total charges be y
y= 25x+90---------1
Wonder weights charges a one-time fee of only $ 27 dollars but charge an additional $32 each month
let the number of months be x
and the total charges be y
y= 32x+27------------2
Required
The value of x, that is the number of months
Step two:
Equating both equations we have
25x+90=32x+27
collect like terms
25x-32x=27-90
-7x=-63
7x=63
divide both sides by 7
x= 63/7
x= 9 months
Rewrite using a single exponent. 4^3 X 4^6
Answers
find the area of shaded part
Answers
Answer:
461.81 cm²Step-by-step explanation:
Diameter of a big circle is 28 cmDiameter of smaller half-circles is 28/2 = 14 cmShaded area = Area of big circle - area of small circle as two half-circles add up to small circle
Area formula:
A = πd²/4Shaded area
π*28²/4 - π*14²/4 = 461.81 cm²What is the area of the circle shown below?
Answers
Answer:
201.06
Step-by-step explanation:
Answer:
804.2cm squared i know this alright
You must show your staterment and reason T-chart to get full credit
Given: KS bisects Pą at T, Fą bisects RS at T.
Prove A PTS = AQTR
Answers
Step-by-step explanation:
RS bisects PQ at T. PQ bisects RS at T.
prove: Triangle PTS congruent Triangle QTR
Statements..............................Reasons(1) RS bisects PQ at T.................(1) Given
(2) PQ bisects RS at T.................(2) Given
(3) angle PST ≅ angle QRT........(3) supplements of congruent angles
(4) TS ≅ TR......................(4) Converse of Base Angles Theorem
(5) angle PTS ≅ angle QTR.........(5) Subtraction Property of Equality
(6) Triangle PTS ≅ Triangle QTR...(6) Angle side angle
Hope it's help you..... ^_^❤️
What is 3x + 2 = 4x - 1
Answers
Answer:
3 = x
Step-by-step explanation:
To simplify this equation, combine like terms:
3 = x