Answers
Answer:
(1) when x is 0 y=5/2 and when y is 0 x=5
(2)Graph the points : (0 , 5/2) and (5 , 0)
(3)the slope is -1/2
Step-by-step explanation:
Related Questions
Factor Completely
f(x)= x^4 - 2x^3 - 3x^2 + 2x + 2
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Select all polynomials that have (x – 3) as a factor.
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In other words, everything but choice B
==========================================================
Explanation:
You could use polynomial long division or synthetic division to check each answer. The shorter route of the two options is synthetic division
There's a much faster way that doesn't involve complicated division. Recall that if (x-k) is a factor of p(x), then p(k) = 0. This is a special case of the remainder theorem.
------------------------------------------------
Here's a fairly short proof:
Consider a polynomial q(x) such that
p(x) = (x-k)q(x)
which shows that (x-k) is a factor of p(x). We don't need to worry about what q(x) actually is since it will go away effectively.
If we plug x = k into the p(x) function, we get
p(x) = (x-k)q(x)
p(k) = (k-k)q(k)
p(k) = 0*q(k)
p(k) = 0
------------------------------------------------
How is this useful? Well we can note that the factor (x-3) is in the form (x-k) where k = 3.
So the idea is to plug x = 3 into each of the four functions and see which result in 0. If we get 0 as an output, then we have a factor. Otherwise, it's not a factor.
-------------------------------------------------
Plug x = 3 into the first function
A(x) = x^3 - 2x^2 - 4x + 3
A(3) = 3^3 - 2(3)^2 - 4(3) + 3
A(3) = 0
This shows (x-3) is a factor of the function A(x)
------------------------------------------------
Repeat for the second function
B(x) = x^3 + 3x^2 - 2x - 6
B(3) = 3^3 + 3(3)^2 - 2(3) - 6
B(3) = 42
We don't get an output of 0, so (x-3) cannot be a factor of B(x)
-----------------------------------------------
Now onto the third function
C(x) = x^4 - 2x^3 - 27
C(3) = 3^4 - 2(3)^3 - 27
C(3) = 0
So (x-3) is a factor of C(x)
----------------------------------------------
Finally the last function
D(x) = x^4 - 20x - 21
D(3) = 3^4 - 20(3) - 21
D(3) = 0
Therefore (x-3) is a factor of D(x) as well.
The remainder theorem will be used to identify the polynomial that has a remainder of zero when divided by (x - 3)
The polynomials that have 0 as a factor are;
(C) C(x) = x⁴ - 2·x³ - 27(D) D(x) = x⁴ - 20·x - 21Reason:
According to the remainder theorem, we have;
The remainder following the division of a polynomial, by (x - a) is P(a)
Therefore, (x - 3) is a factor of the polynomial P(x) where P(3) = 0
For option (A), we have; A(x) = x³ - 2·x² - 4·x + 3
The remainder when (x³ - 2·x² - 4·x + 3) is divided by (x - 3) is therefore;
A(3) = 3³ - 2 × 2² - 4 × 2 + 3 = 14
Therefore, (x - 3) is not a factor of A(x) = x³ - 2·x² - 4·x + 3
For option (B), we have;
B(x) = x³ + 3·x² - 2·x - 6
The remainder when B(x) is divided by (x - 3) is therefore;
B(3) = 3³ + 3×3² - 2×3 - 6 42
Therefore, (x - 3) is not a factor of B(x) = x³ + 3·x² - 2·x - 6
For option (C), we have;
C(x) = x⁴ - 2·x³ - 27
The remainder when C(x) is divided by (x - 3) is therefore;
C(3) = 3⁴ - 2×3³ - 27 = 0
Therefore;
(x - 3) is a factor of C(x) = x⁴ - 2·x³ - 27For option (D), we have;
D(x) = x⁴ - 20·x - 21
The remainder when D(x) is divided by (x - 3) is given as follows;
D(3) = 3⁴ - 20×3 - 21 = 0
Therefore;
(x - 3) is a factor of D(x) = x⁴ - 20·x - 21Learn more here:
https://brainly.com/question/11456067
Just answer correctly to get brainleist and 10 pts! :)
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Pls help this is already past due
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Answer:
Step-by-step explanation:
-5400/-450
12 minutes
Answer:
12 minutes
Step-by-step explanation:
If the rate of the plane is -450 meters per minute, then you have to use the "division" operation in order to know how much time it takes for the plane to reach an altitude of -5,400 meters.
-5,400 meters ÷ -450 meters/minute = 12 minutes
It will take 12 minutes for the plane to reach an altitude of -5,400 meters.
Let's check:
-450 meters x 12 minutes = -5,400 meters
The coach fare to a theme park costs $21 for 3 people, what would be the cost for 6 people?
A) $42 B) $63 C) $140
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Answer:
42
Step-by-step explanation:
You add 21 twice because 3 is half of 6
Answer:
A - 42
Step-by-step explanation:
21 x 2 = 42
3 x 2 = 6
Please show work in answer: 20/x^2-4x+7=x+2
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Answer:
x = 2
Step-by-step explanation:
What is the answer to this problem?
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The slope of a line is [tex]\frac{dy}{dx}[/tex]
where [tex]d[/tex] is the difference and [tex]y[/tex] and [tex]x[/tex] are the values.
In this case, the difference in [tex]y[/tex] is 10 and the difference in [tex]x[/tex] is 0
And division where the denominator being 0 leads to the answer being Undefined or Infinity as the line is directly on the [tex]y[/tex] axis.
suppose y varies directly as x and y=21 when x=3 find x when y=42
Answers
Answer:
6
Step-by-step explanation:
21/3=42/x
x=42*3/21
x=6
What is an equation of the line that passes through the points (-2,7) and (1, -8)?
Put your answer in fully reduced form.
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Plz help will make brainiest.
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The first two are correct for sure, the last one I’m pretty sure is also correct.
A student says that the graph of the equation y = 3(x + 8) is the same as the graph of y = 3x, only translated upwards by 8 units. Do you agree? Why or why not?
A.S.A.P. I HAVE TO TURN THIS IN AT 10:30 HURRY PLEASE :)
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Given:
A student says that the graph of the equation [tex]y = 3(x + 8)[/tex] is the same as the graph of [tex]y = 3x[/tex], only translated upwards by 8 units.
To find:
Whether the student is correct or not.
Solution:
Initial equation is
[tex]y=3x[/tex]
[tex]f(x)=3x[/tex]
Equation of after transformation is
[tex]y=3(x+8)[/tex]
[tex]g(x)=3(x+8)[/tex]
Now,
[tex]g(x)=f(x+8)[/tex] ...(i)
The translation is defined as
[tex]g(x)=f(x+a)+b[/tex] ...(ii)
Where, a is horizontal shift and b is vertical shift.
If a>0, then the graph shifts a units left and if a<0, then the graph shifts a units right.
If b>0, then the graph shifts b units up and if b<0, then the graph shifts b units down.
From (i) and (ii), we get
[tex]a=8\text{ and }b=0[/tex]
Therefore, the graph of [tex]y=3x[/tex] translated left by 8 units. Hence, the student is wrong.
Please answer correctly !!!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!
Answers
Answer: 105 degrees
Step-by-step explanation:
Both angles equal 180 so if we subtract 75 from 180 we get 105.
Answer:
105º
Step-by-step explanation:
<ONC and <BNJ are a linear pair, the angles are supplementary (eqauls 180º).
how do I get on the leaderboard
I have 1900 something points way more than these people. Is it about how many questions you ask?
Answers
Answer:
No its about how many you get PER DAY
Step-by-step explanation:
James is a journalist with an annual income of $85,350. James has to pay an income tax of 8%. What is the amount of income tax in dollars and cents that James has to pay? 7.13A
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Answer: $6828
Step-by-step explanation:
James annual income = $85350
Income tax = 8%
The amount of income tax in dollars and cents that James has to pay will be calculated by multiplying the income tax by his annual income. This will be:
= 8% × $85350
= 8/100 × $85350
= 0.08 × $85350
= $6828
Which answer choice shows 81.027 rounded to the nearest half?
A. 80
B. 80.5
C. 81
D. 81.5
Answers
Answer:
c
Step-by-step explanation:
ILL MAKE MOST BRAINLIEST PLZ HELP!!!
Graph the equation on the coordinate plane.
y = 4x
What does 4x look like on a cordinate plain?
Answers
Answer:
Step-by-step explanation:
Step-by-step explanation:
The slope would be 4 (because in y=mx+b form, m = slope)
The y-intercept would be zero (0,0) since b = y-intercept, and there is no b in this equation.
From (0,0) you would rise four to get (0,4) and go over to the right one (1,4)
To make another point, you could go down 4 from (0,0) to get (0,-4) and to the left one to get (-1,-4)
Hope this helps.
Decide if each statement about the expression 7f + 15 - 2g is true or false.
The expression contains 2 terms.
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Answer:
FALSEStep-by-step explanation:
The statement "The expression contains 2 terms." is false because the expression contains 3 terms: 7f, 15 and -2g
The given statement "expression contains 2 terms" is false, Because it contains three terms of which two are the variable and one is a constant.
What is the equation?An equation is a statement that two expressions, which include variables and/or numbers, are equal. In essence, equations are questions, and efforts to systematically find solutions to these questions have been the driving forces behind the creation of mathematics.
It is given that,
The expression is,
7f + 15 - 2g
The given expression contains 2 terms.
A term is a single expression, a single integer (positive or negative), and a single variable (a letter), or a number of variables that have been multiplied but never added or canceled are all acceptable.
The given statement is false because it reported only two terms but there are more than two terms.
Thus, the given statement "expression contains 2 terms" is false Because it contains three terms of which two are the variable and one is a constant.
Learn more about the equation here,
https://brainly.com/question/10413253
#SPJ2
Courtney walked from her house to the beach at a constant speed of 444 kilometers per hour, and then walked from the beach to the park at a constant speed of 555 kilometers per hour. The entire walk took 222 hours and the total distance Courtney walked was 888 kilometers.
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Answer:
I suppose that each number is repeated 3 times, the actual question is:
Courtney walked from her house to the beach at a constant speed of 4 kilometers per hour, and then walked from the beach to the park at a constant speed of 5 kilometers per hour. The entire walk took 2 hours and the total distance Courtney walked was 8 kilometers.
Now, remember the relation:
Distance = Speed*Time
Let's define:
D1 = distance between Courtney's house and the beach.
D2 = distance between the beach and the park.
T1 = time that it took the first walk.
T2 = time that it took the second walk.
We know that the total distance Courtney walked is 8km, then:
D1 + D2 = 8km.
And we also know that the entire walk took 2 hours, then:
T1 + T2 = 2h.
We also have the equations:
D1 = 4km/h*T1
D2 = 5km/h*T2.
Then we have a system of equations:
D1 + D2 = 8km
T1 + T2 = 2h
D1 = 4km/h*T1
D2 = 5km/h*T2.
To solve this, first let's replace equations 3 and 4 in the first equation:
4km/h*T1 + 5km/h*T2 = 8km
Now we have only two equations left:
4km/h*T1 + 5km/h*T2 = 8km
T1 + T2 = 2h
Now we can isolate one of the variables in the second equation and then replace it in the first equation, i will isolate T1:
T1 = 2h - T2.
Replacing this in the first equation gives:
4km/h*(2h - T2) + 5km/h*T2 = 8km
Now let's solve this for T2.
8km - 4km/h*T2 + 5km/h*T2 = 8km
8km + 1km/h*T2 = 8km
1km/h*T2 = 0
from this, we have T2 = 0
This would mean that T1 = 2h.
Then:
D1 = 4km/h*2h = 8km.
T2 = 0
D2 = 5km/h*0 = 0.
This happens because the numbers in the problem were not well thought.
You can see that when she spends the 2 hours walking at the smaller speed, she already reaches the total distance, then if she walked any amount of time at the larger speed, the total distance would be more than 8km.
It rained 6.14 inches on Saturday and 4.71 inches on Sunday. How much did it rain on
Saturday and Sunday combined?
ASAP
Answers
Answer:
10.65 inches
Step-by-step explanation:
You simply add Saturday's and Sunday's total together
6.14+4.71=10.85
Please Help I greatly appreciate any help. Thank You to those who help I will give a 5 star rating and a brainiest crown
Answers
Answer:
first pic, 2.5 pounds of peanuts cost $1, 17.5 pounds of peanuts cost $7, and the point (4,10) is also on the line. second pic, G.
Step-by-step explanation:
2.5 goes into 17.5, 7 times. then $7/7 means $1 for 2.5 pounds. that is true. second one they state the graph. the last one, if you calculate knowing 2.5 pounds is $1, then it is correct. for the second pic, i dont know but ill give you this im really sorry. draw a triangle from the two points getting a slope of 3. but this is negative so it's -3. the slope for the equation if it's perpendicular is 1/3 tho. wait i got it i think it's G since it's going to be perpendicular so if you draw it on, it would be positive.
Evaluate for a=3, b=2 and c=10.
(c - a)^b
Answers
Answer:
49
Step-by-step
step 1 subtract 10 -3
step 2 multiply 7 x 7
that's your answer
Answer:
49
Step-by-step explanation:
Step 1:
a = 3; b = 2; c = 10 Given
Step 2:
[tex](c-a)^{b}[/tex] Equation
Step 3:
[tex]( 10 - 3)^{2}[/tex] Input values
Step 4:
( 7 ) ² Parentheses
Answer:
49
Hope This Helps :)
A group of friends were working on a student film. They spent all their budget on props and costumes. They spent $693 on props, and 45% of the total budget on costumes. What was the total budget for their student film?
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Answer:
The total budget is $1260
Step-by-step explanation:
Given
[tex]Props = \$693[/tex]
[tex]Costumes = 45\%[/tex]
Required
Determine the total budget
Since all budgets was spent on Props and Costumes only.
We have that.
[tex]\%Props + \%Costumes = 100\%[/tex]
[tex]\%Props + 45\%= 100\%[/tex]
[tex]\%Props= 100\% -45\%[/tex]
[tex]\%Props= 55\%[/tex]
In other words, 55% was spent on Props
Let the total budget be x, we have:
[tex]55\% * x = \$693[/tex]
Make x the subject
[tex]x = \$693/55\%[/tex]
[tex]x = \$1260[/tex]
Hence, the total budget is $1260
what is 5 %9 (86 - 32) plss help
Answers
Answer:
270
Step-by-step explanation:
Write as an exponent with the base of b:
[tex]bb^{m}[/tex]
Answers
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[tex]b. {b}^{m} = {b}^{1 + m} [/tex]
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Given a term in a geometric sequence and the common ratio. Find the explicit formula . A) a 3 =-36 , r = 6 b) a 6 =64 , r = 2
Answers
Answer:
Step-by-step explanation:
The explicit formula for a GP is expressed as
Tn = ar^{n-1}
a is the first term
n is the number of terms
r is the common ratio
a) If a3 = 36 and r = 6
a3 = ar^3-1
a3 = ar^2 = 36
ar^2 = 36
a(6)^2 = 36
36a = 36
a = 1
Get the nth term
Tn = 1(6)^{n-1}
Tn = 6^{n-1}
b) If a6 = 64 and r = 2
a6 = ar^6-1
a6 = ar^5 = 64
ar^5 = 64
a(2)^2 = 64
4a = 64
a = 16
Get the nth term
Tn = 16(2)^{n-1}
Tn = 16*(2^n/2)
Tn = 8(2^n)
If you can guess my number from 1-20 in your first try ill give brainliest :)
Answers
Answer:
6 I think.
Step-by-step explanation:
6 I think. think
Why would the law of cosines be used to solve for b in the triangle below? SAS is given, and the unknown measure, b, is a side length. SSA is given, and the unknown measure, b, is a side length O 36° O 3.5 7 SSS is given, and the unknown measure, b, is an angle measure. ASA is given, and the unknown measure, b, is an angle measure. DONE b
Answers
Answer:
it's a
Step-by-step explanation:
its a on edge
Answer: A
Step-by-step explanation:
PLEASE HELP WITH THIS QUESTION ILL GIVE BRAINLIEST !!!
Answers
Answer: linear pair
Step-by-step explanation:
Because ce is shown to be bisected by line n, then the two expressions are added and will equal 180°. This is what is called a linear pair.
13 only (give brainliest) ASAP
Answers
Answer:
1/3 or 0.3
Step-by-step explanation:
5/8 x 4/5 x 2/3 =
1/3 or 0.3
Answer:
1/3 in^3
Step-by-step explanation:
In order to find the volume, you must multiply the length, by the width, by the height. This would mean you need to do 2/3x5/8x4/5=40/120
40/120 simplified will give you 1/3
A logo is drawn inside a rectangle.
It is made up of four congruent triangles,
16cm
21cm
What fraction of the rectangle is covered by
the triangles?
Answers
Answer:
14
Step-by-step explanation:
14
