Answers
Answer:
[tex]x=\frac{2}{5}[/tex]
Step-by-step explanation:
[tex]5x^3-2x^2+5x-2=0\\x^2(5x-2)+(5x-2)=0\\(x^2+1)(5x-2)=0\\Hence,\\Either\ (x^2+1)\ should\ equal\ zero, or (5x-2)\ should\ be\ null.\\Lets\ try\ each\ on\ seperately:\\(x^2+1)=0\\x^2=-1\\x=\sqrt{-1}\\As\ \sqrt{-1}\ is\ not\ a\ real\ number,\ we\ can\ exclude\ it\ as\ a\ solution.\\Hence,\\(5x-2)=0\\5x=2\\x=\frac{2}{5} \\Thats\ your\ answer.[/tex]
Answer:
x = [tex]\frac{2}{5}[/tex] , x = ± i
Step-by-step explanation:
Given
5x³ - 2x² + 5x - 2 = 0 ( factor the first/second and third/fourth terms )
x²(5x - 2) + 1(5x - 2) = 0 ← factor out (x - 2) from each term
(5x - 2)(x² + 1) = 0
Equate each factor to zero and solve for x
5x - 2 = 0 ⇒ 5x = 2 ⇒ x = [tex]\frac{2}{5}[/tex]
x² + 1 = 0 ⇒ x² = - 1 ⇒ x = ± [tex]\sqrt{-1}[/tex] = ± i
The polynomial is of degree 3 and has 3 roots, 1 real and 2 complex, that is
x = [tex]\frac{2}{5}[/tex] ← real root
x = ± i ← complex roots
Related Questions
PLZ HELP ME I BEG YOU!!!!!!!!!!!!!!
Sam has $92 and spends $5 every day. William has $41 and spends $2 every day. On what day will they have the same amount of money? Show work.
Answers
$92 - ($5 • 17) = 7
$41 - ($2 • 17) = 7
Let 17 represent the amount of days they both spent money, AND the day they ended up with the same amount of money. No other day before 17, they would’ve had the same amount of money. You can figure this out by plugging a different number in for 17, and seeing the answer will not be the same for both equations
Hope this helps.
Greatest common factor of 25,50,75
Answers
Answer:
gcd (50; 75) = 25 = 5^2:
Step-by-step explanation:
hope it help
The greatest common factor of 25, 50 and 75 is 5*5, which is equal to 25.
We are given that;
The three numbers = 25, 50, 75
Now,
The greatest common factor (GCF) of two or more numbers is the largest positive integer that divides evenly into all the numbers with zero remainder.
To find the GCF of 25, 50 and 75, we can use the prime factorization method. This involves writing each number as a product of its prime factors and then finding the common factors among them.
The prime factorization of 25 is 5*5
The prime factorization of 50 is 2 x 5*5.
The prime factorization of 75 is 3 x 5*5.
The common factors of 25, 50 and 75 are 1 and 5*5.
Therefore, by factorization the answer will be 25.
Learn more about factorization here;
https://brainly.com/question/10454590
#SPJ4
*welp* Can i 'ave a bit of help, please?
Answers
Answer:
3^2
Step-by-step explanation:
You add the exponents when you multiply
Then you subtract them since you divided them.
Answer:
9
Step-by-step explanation:
3^8=6561
3^4=81
3^2=9
3^8=6561
so... 6561*81/9*6561 equals nine so your answer is 9.
Write a word description of the set.
{−6, −5, −4, −3, −2, −1}
Answers
Hope this helps!
The sum of two numbers is 52. The larger number is 10 more than the smaller number. What are the numbers?
Answers
Answer:
42?
Step-by-step explanation:
Just because 52-10 is 42..but thats to simple
Answer:
5.20000
Step-by-step explanation:
25
Simplify ——
5
please help me answer this i will give brainliest and 5 star rating!!
Answers
you can solve this by using proportions.
8/20 = x/35
280 = 20x
/20 /20
14 = x
Given constant temperature, P1 = 25 psia, P2 = 40 psia, and V1 = 30 cu in, what is V2 in cubic inches? Select one: a. 15 b. 17.5 c. 18.75 d. 33.33
Answers
Answer:
V2 = 18.75 cu in
Step-by-step explanation:
Given that:
Given constant temperature :
P1 = 25 psia, P2 = 40 psia, and V1 = 30 cu in,
Calculate v2
Using the relation :
Since Temperature T is constant ;
P1V1 = P2V2
25 * 30 = 40 * V2
750 = 40V2
V2 = 750 / 40
V2 = 18.75 cu in
can someone plz help i need to graph it and identify the x-intercept
Answers
Answer:
(-7/2,0) is the x intercept
Step-by-step explanation:
1. y+3 = -6/7x
2. -3 -3 ....subtract 3 from both sides to isolate the variable y
y= =-6/7x -3 ....is your new equation
You graph it by putting your point on negative three and then counting 6 units down and 7 units right.
For the x intercept you set y to 0 and solve for x
0= -6/7x -3
+3 +3 ...to both sides
3= -6/7x .....divide both sides by -6/7
-7/2=x
put it in as a coordinate
Question in picture solve
Answers
Answer: Choice B) 7/2 and choice D) 2
These two slope values are positive. Positive slopes correspond to lines that move uphill as you move from left to right.
A negative slope moves in the opposite direction. A slope of zero refers to a flat horizontal line. A slope of undefined means we have a vertical line.
The table shows some information about the lifetimes, t, in
hours, of some lightbulbs.
Lifetime
Frequency
25
51
50
47
100
34
150
47
200
0
250
50
300
43
Estimate the mean lifetime of a bulb.
Give your answer rounded to 2 DP.
PLZZ HELP !
Answers
2x - x -1 = -1 + x
I need help on this problem may you help please
Answers
Answer:
x=0
Step-by-step explanation:
30 points help!!!!!!!!!!!
The following function represents the production cost f(x), in dollars, for x number of units produced by company 1:
f(x) = 0.25x2 − 8x + 600
The following table represents the production cost g(x), in dollars, for x number of units produced by company 2:
x g(x)
6 862.2
8 856.8
10 855
12 856.8
14 862.2
Based on the given information, determine which company has a lower minimum and find the minimum value.
g(x) at (10, 855)
f(x) at (16, 536)
g(x) at (16, 536)
f(x) at (10, 855)
Answers
Answer:
the answer is f(x) at (16, 536)
how much weight did the kitten gain in that month?
Answers
Answer:
21 ounces
Step-by-step explanation:
https://brainly.com/question/15457567
Answer:
about 2 pounds
At two months the kittens weigh about 2 pounds and can be spayed or neutered.
hope this helps
I need the top 2 pls
Answers
Answer:
Step-by-step explanation:
7:8 is 7/8
9:5
G(n)=-11*4^n complete the recursive formula of g(n) g(1) g(n)=g(n-1)
Answers
1x-1=-1
11^4= 161,051
I’m not sure
Answer:
-44
4
Step-by-step explanation:
Find the value of 15/4 divided by 5/8
Answers
Answer:
6
Step-by-step explanation:
15/4÷5/8
15/4×8/5
=6
Answer:
15/4 is 0.0753 and 5/8 0.0097369
Step-by-step explanation:
Rob is saving money for a down payment on a house. He opens a savings account at his local bank and deposits $1000. He models his savings plan with the equation y=400x+1000
based on his current income and monthly savings rate. What is the meaning of the y-intercept in the equation?
Answers
Answer:
x=-5/2
Step-by-step explanation
y=0
0=400x=1000 divide both sides
x=-5/2
Answer:
The Answer is D: Starting amount in his savings account
Step-by-step explanation:
The y-intercept represents the starting amount in his savings account.
x = 0 for the y-intercept.
y = 400x + 1000
y = 400(0) + 1000
y = 1000
Write the equation of the line that is parallel to the graph of Y= 1/2x + 6 ,and whose y-intercept is -2.
Answers
Answer:
y= -2x-2
Step-by-step explanation:
What is the equation of the function:(-1,3),(0,4),(2,6)
A) f(x)= x^2 +x -4
Answers
hope this helped
Find the length of the altitude, not x.
Answers
Answer:
multiple choice?
Step-by-step explanation:
Tom fed the dog 3 times as many times as her sister last week. His sister walked the dog 9 times. Max said he could multiply 4 times 9 to find out how many more times he walked the Dog than his sister. Is Tom correct?
Answers
Answer:
No
Step-by-step explanation:
The calculation that Tom is trying to do would be to calculate how many times he walked the dog if he had walked the dog 4 times as many times as his sister, who in this scenario walked the dog a total of 9 times. Since, in this scenario there is no mention of how many times Tom walked the dog then this calculation cannot be made and I would say that Tom is not correct.
Answer: nope
Step-by-step explanation: it’s just obvious
Drag the correct word into the space provided in order to complete the sentence.
If an outlier is included in a data set the....... is least affected
mean , median, range or standard deviation
Answers
Answer:
mean for the the second median for the 1st one
Step-by-step explanation:
Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
Answers
Answer:
C {14,47,50}
Step-by-step explanation:
For it to be a right triangle it would have to be {14,48,50}
Hope this helps
You know x is a number less than 4. Select all the inequalities that must be true.
x 2
Answers
Answer:
X<4 (-infinty,3)
Step-by-step explanation:
It is this because it is all number that is less then 4 which mean it is 3 and below.
HELP PLEASEEEE!!!!!!!!!!!!!!!!!
Answers
Answer:
-2
Step-by-step explanation:
Y-int is the point that touches the y-axis (the verticle line)
look at the point where it touches the y-axis
it is negative and it is 2. so it would be (0,-2) or -2
Please please please help me with this !!!!!!
Answers
Answer:
Measure of angle T is 67.5 and measure of angle V is 22.5
Step-by-step explanation:
Solve for x
All the angles in a triangle equal 180
So,
3x + x +90 is 180.
Subtract 90 from both sides
3x+x = 90
Add like terms
4x = 90
Divide by 4 to solve for x
x = 22.5
Now substitute 22.5 in for 3x and x
Measure of angle T is 3(22.5) = 67.5 and measure of angle V is 22.5
The middle-school camera club sold 240 tulip bulbs and 360 daffodil bulbs. Students divided the bulbs into 100 bags to sell at the school fair. Write an expression to show how many bulbs went into each of the 100 bags if students put the same total number of bulbs in each bag.
Answers
There would be 600 bulbs in all, that makes. 6 in each of the 100 bags. An expression could be: 600 = 100x.
MOM PLSSSS COME ONLINE
Evaluate the expression 7[tex]x^{2}[/tex]y, when x = 5 and y = 3. (3 points)
Group of answer choices
210
728
525
315
Answers
7(5^2)(3) = 7(25)(3)
Pemdas
5 squared
Multiply 7(25) first to get 175 then times that by 3, it equals 525.
PLEASE HELP!!! 20 POINTS WILL MARK BRAINLIEST
Answers
Answer:
d
Step-by-step explanation:
Just the answer choices, not the box.
Answers
Answer:
the first one
Step-by-step explanation:
its the first one since you can be exactly 42 inches to ride the crazy carts