Answers
Answers
x= -3/2
x= 3i
x= -3i
Step-by-step explanation:
f (x) = 2x3 + 3x2 + 18x + 27
Set 2x^3 + 3x^2 + 18x + 27 equal to 0.
2x^3 + 3x^2 + 18x + 27 = 0
Solve for x.
Factor the left side of the equation.
Factor out the greatest common factor from each group.
x^2 (2x + 3) + 9 (2x + 3) = 0
Factor the polynomial by factoring out the greatest common factor, 2x + 3. (2x + 3) (x^2 + 9) = 0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
2x + 3 = 0
x^2 + 9 = 0
Set 2x + 3 equal to 0 and solve for x.
Set 2x + 3 equal to 0. 2x + 3 = 0
Solve 2x + 3 = 0 for x. Tap for more steps...
3 x = − 2
Set x2 + 9 equal to 0 and solve for x.
Set x2 + 9 equal to 0. x2 + 9 = 0
Solve x2 + 9 = 0 for x.
x = 3i, −3i
The final solution is all the values that make (2x + 3) (x2 + 9) = 0 true.
x = − 3/2 , 3i, −3i
Related Questions
how many pounds does a 77kg man weigh? (hint: there are 2.2pounds in 1 kg)
Answers
At the Burger Barn, 80% of the 20 menu items come with a side of fries. How
many menu items come with a side of fries? *
Answers
Answer:
16 this is the real answer
Step-by-step explanation:
Hope this help
A grocery store always displays a new brand of cereal on 6 shelves. The clerk places 18 boxes of cereal on each shelf. Which equation can be used to find the total number of boxes displayed.
A. 18÷6=
B. 18-6=
C. 6+18=
D. 6x18=
Answers
Answer:I think is 18 divided by 6
Step-by-step explanation:
Because they are saying each that is your clue word that means you need to divide.
I hope it helps :)
If an airplane in a 1 in. : 4 ft. scale drawing is 5 in. long, how long is the actual airplane? Use proportions to solve the problem and show all work. Provide a proper label with your answer.
Answers
Answer:
20ft
Step-by-step explanation:
20ft is the answer because you would do 4 x 5 = 20, since the scale factor is 1in : 4ft
Hope this helped :)
Find the missing angle m
Answers
Answer:
m∠BAC=135°
Step-by-step explanation:
360- 84=276
276-141=135
Hope this helps!
Please mark me brainliest if you can. :)
I will give brainiest to whoever answers correctly !!
Answers
Answer:
the material when you get a chance can you send me the material
Simplify the expression by combining like terms 2w+4w+8w? whats the answer
Answers
Explanation: In this expression, +2w, +4w, and +8w are called terms and the numbers in front of the variables, +2, +4, and +8 are called coefficients.
Because the variables are identical,
the three terms in this problem are called like terms.
They can be added together by adding their coefficients.
Since 2 + 4 + 8 is 14, 2w + 4w + 8w is 14w.
35 points! Will mark Brainliest! Real answers only!
Answers
Answer:
Ty for the free poiunts!
Step-by-step explanation:
You got the answer right LLO
Answer:
Yea the answer is right
Step-by-step explanation:
Question 3
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>
A friend has a 81% average before the final exam for a course. That score includes everything but
the final, which counts for 30% of the course grade.
What is the best course grade your friend cah earn?
%
What is the minimum score would your friend would need on the final to earn a 75% for the course?
%
Give answers accurate to at least one decimal place.
Question Help: D Video Message instructor
Submit Question
Answers
Answer:
The best course grade your friend can earn is 0.867 = 86.7%.
The minimum score would your friend would need on the final to earn a 75% for the course is of 0.61 = 61%.
Step-by-step explanation:
This is a weighed average problem, in which we multiply each grade by its weight.
We have that:
In 70% of the course, the friend has a grade of 81%.
In the other 30%, he will have x.
What is the best course grade your friend can earn?
This will happen if he earns 100% = 1 on the final test. So
[tex]G = 0.7*0.81 + 0.3*1 = 0.867[/tex]
The best course grade your friend can earn is 0.867 = 86.7%.
What is the minimum score would your friend would need on the final to earn a 75% for the course?
This is x, when the grade is 0.75. So
[tex]0.75 = 0.7*0.81 + 0.3x[/tex]
[tex]0.3x = 0.75 - 0.7*0.81[/tex]
[tex]x = \frac{(0.75 - 0.7*0.81)}{0.3}[/tex]
[tex]x = 0.61[/tex]
The minimum score would your friend would need on the final to earn a 75% for the course is of 0.61 = 61%.
3/7x + 1 ⅔ subtracted from 3 2/7x - 2 4/9
Answers
Answer:
1/63 x (27xexponent2 - 102x - 154)
Step-by-step explanation:
I hope this helped you, if not I'm sorry I tried my best. Best of luck
aight mate can someone help me lol
Answers
Answer:-61/20
Step-by-step explanation:
Answer:
-3 1/20
Step-by-step explanation:
The denominators share a common multiple of 20.
-5/4 = -25/20
-9/5 = -36/20
-25/20 + -36/20 = -61/20 = -3 1/20
need help asap please!!
Answers
Answer:
[tex]\displaystyle 23[/tex]
Step-by-step explanation:
[tex]\displaystyle 4p = p + 69 → -69 = -3p; 23 = p[/tex]
I am joyous to assist you at any time.
Solve this equation for a:
–5 + 4a = 27
Answers
Answer:
a=8
Step-by-step explanation:
solve for a by adding 5 on both sides
4a=32
Now divid 4 on both sides
a=8
MULTIPLE CHOICE HELP ASAP! Brainliest for correct answer.
Please only answer if you understand the question :)
Which equation goes with the circle?
Answers
Answer:
An equation of the circle with centre (-2,1) and radius 3 is [tex]\mathbf{(x+2)^2+(x-1)^2=9}[/tex]
Option D is correct.
Step-by-step explanation:
Looking at the figure we get centre of circle C (-2,1) and radius of circle r = 3
The equation of circle is of form: [tex](x-h)^2+(x-k)^2=r^2[/tex] where (h,k) is centre and r is radius.
We have centre C (-2,1) so, we have h = -2 and k = 1
We have radius = 3 so, r = 3
Putting values in the equation and finding the required equation:
[tex](x-h)^2+(x-k)^2=r^2\\(x-(-2))^2+(x-1)^2=(3)^2\\(x+2)^2+(x-1)^2=9[/tex]
So, an equation of the circle with centre (-2,1) and radius 3 is [tex]\mathbf{(x+2)^2+(x-1)^2=9}[/tex]
Option D is correct.
Which of these is an example of the Commutative property of addition? And Explain why? 3+5=4+4 or 3+5=5+3
Answers
44. There are 30 calculators numbered 1-30 in
a case. If 4 of the calculators are broken,
what is the probability that the numbers on
the broken calculators are at least 16?
Answers
The probability that the numbers on the broken calculators are at least 16 will be 0.9997.
What is probability?Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.
There are 30 calculators numbered 1-30 in a case. If 4 of the calculators are broken.
Then the probability that the numbers on the broken calculators are at least 16 will be
Number of ways to get a sum less than 16 = 1234, 1235, 1236, 1237, 1238, 1239, 2345, 2346 = 8
Probability = 1 – 8 / (³⁰C₄) = 1 – 8/27405 = 0.99970808246
More about the probability link is given below.
https://brainly.com/question/795909
#SPJ1
Who ever helps get branliest.
Answers
Answer:
c ?
Step-by-step explanation:
Answer:
[tex]\mathrm{A.} \: \frac{5}{14}\cdot \frac{4}{13}\\[/tex]
Step-by-step explanation:
There are 14 marbles in total, of which 5 of them are red. Therefore, the probability that the first marble she chooses is red is [tex]\frac{5}{14}[/tex].
Since she does not replace the marble, there are now 13 marbles in total, of which 4 are red (she drew one of the red marbles on her first draw). Therefore the probability of her drawing a red marble on her second draw is [tex]\frac{4}{13}[/tex], assuming she draws a red marble on the first draw.
Thus, the probability she draws a red marble on both draws is [tex]\fbox{$\mathrm{A.} \: \frac{5}{14}\cdot \frac{4}{13}$}[/tex].
A teacher is 5 feet 8 inches tall and she shrinks to 9 inches. How tall will her pencil be if it undergoes the same scale shrink and was originally 12 inches?
A) 1.59 inches
B) 1.86 inches
C) 2.68 inches
D) 6.8 inches
Answers
Answer:
c
Step-by-step explanation:
2.68
1. 3х – 4 y = 24 : (0, ) ( ,0)
Answers
Help plz:)))I’ll mark u Brainliest
Answers
Answer:
A.
Step-by-step explanation:
cause its congruent just flip and get
ZYX
brainliest appreciated
HELP PLSSSS I need help BEFORE MY MOM WHIp MEEE
Answers
Answer:
the answer is 8
Step-by-step explanation:
;)
2x^3-3x-5=O wat the answer
Answers
Find the greatest common factor of these two expressions :
20u^8 y^7 x^6 and 12u^3 y^4
Answers
Please help! Evaluate xyz if x= 2.
y=-5, and z=-9
Answers
Answer:
90
Step-by-step explanation:
Just multiply what the variables equal to
Step-by-step explanation:
[tex] \underline{ \underline{ \text{Given}} }: [/tex]
x = 2 , y = -5 & z = -9[tex] \underline{ \underline{ \text{To \: find}}} : [/tex]
Value of xyz[tex] \underline{ \underline{ \text{Solution}}} : [/tex]
Plug the values of x , y & z in the given expression and then multiply !
⇾ [tex] \tt{2 \times ( - 5) \times ( - 9)}[/tex]
⇾ [tex] \tt{( - 10) \times ( - 9)}[/tex]
⇾ [tex] \tt{90}[/tex]
[tex] \red{ \boxed{ \boxed{ \text{Our \: final \: answer : \boxed{ \underline{ \tt{ 90}}}}}}}[/tex]
Hope I helped ! ♡
Have a wonderful day / night ! ツ
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When you plugged in your phone you had 36% left on your battery. It took 25 minutes to rwach 100% charge. What is the constant rate of change of % charge per minute?
Answers
Answer:
0.390%
Step-by-step explanation:
100-36=64
25÷64=0.390625
Answer:
2.6
explanation:
100-36=64
64/25= 2.6
Pls
help lol thanks :)
Answers
que
Step-by-step explanation:
usye sane epañol...
Did I do this right?
(give me proof)
Answers
Answer:
yes
Step-by-step explanation:
y=5+5/1
5/1= rise/run
Answer:
Yes
Step-by-step explanation:
when you go over one (x), you go up five (y), on the chart. That's the definition of a slope - rise/run.
1. A plumber cut a pipe into 6 identical pieces. Each piece measures 17.4 feet long.
a) How long was the original pipe?
b) What is the cost of the original pipe if the store charges 2.18 dollars per foot?
PLEASE HURRYYYYY
Answers
Answer:
104.4 for A.
Step-by-step explanation:
Can someone help me with the work please I did it I want to make sure it great please someone look at it please
Answers
Answer:
whar that so easy
Step-by-step explanation:
yes is all correct I just check it but check it on a calculator too
HELP ASAP! Brainliest for correct answer!
Answers
Answer:
30
i hope it helps