Solve the equation.
4y^3 – 7y^2 + 28 = 16y
Answers
Answer: -2, 2, 7/4
***If the pictures is sideways, use the rotate button. I hope the explanation made sense!
Answer:
The roots are y=2, y=-2 and y=7/4
Step-by-step explanation:
4y^3-7y^2+28=16y =0
subtract 16y from both sides
4y^3 -7y^2 - 16y +28 =0
Factor by Grouping
(4y^3 -7y^2) (-16y +28) =0
Greatest common factor
y^2(4y-7) -4(4y-7)
take y^2 and -4 as well as the repeated 4y-7
(4y-7) (-4+y^2)
change -4 to -2^2
(4y-7) (-2^2+y^2)
Similify
(4y-7). (y-2). (y+2)
y=7/4 y=2 y=-2
Credit to BlueGreen24
Related Questions
Which triangle(s) are congruent to triangle ABC?
Answers
Answer:
none of the above
Step-by-step explanation:
the all diferent in there own ways
Answer:
Which triangle(s) are congruent to triangle ABC? The triangle JGH
Step-by-step explanation:
Triangle ABC is congruent to triangle JGH
The monthly fees to swim at the community pool are below.
· $8 cleaning fee once a month
· $2 fee per visit to the pool
If Hector paid a total of$34 in pool fees for the month, how many times did he visit the pool?
HURRRY PLZ im doing a math problem
Answers
Answer: 13
Step-by-step explanation: subtract 8 from 34 which gives me 26. divide 26 by the $2 fee and He visited the pool 13 times.
What is the answer???
Answers
Answer:
6 units
Step-by-step explanation:
A'C' is the same length as AC
a reflection does not change the lengths
Answer:
C. 6 units
Step-by-step explanation:
The answer is C. 6 units
length of AC = length of A'C'
HELP ASAP ILL GIVE U BRAINLIEST AND A THANKS
Which graph describes the open sentence −5≤n−2≤2?
Answers
Answer:
you have to write it down on a piece of paper and go from there
Step-by-step explanation:
Carla's Plumbing charges $25 for a service call and $28 per hour, h, for labor for any repair. The total cost, t, for a repair can be calculated using the equation below. 28h+25=t Mr. Callahan paid a total of $165 for a repair. How many hours did it take to complete his repair?
Answers
Answer:
Step-by-step explanation:
expand the expression 4(x-5)
Answers
Answer:
4x-20
Step-by-step explanation:
What is the measure of?look at the picture
Answers
Answer:
C, 100 degrees
Step-by-step explanation:
180-80=100
What’s the solution for y=2x+7 y=3x-1
Answers
Answer:
x=8 and y=23
Step-by-step explanation:
Rewrite equations:
y=2x+7;y=3x−1
Step: Solve y=2x+7 for y:
y=2x+7
Step: Substitute 2x+7 for y in y=3x−1:
y=3x−1
2x+7=3x−1
2x+7+−3x=3x−1+−3x(Add -3x to both sides)
−x+7=−1
−x+7+−7=−1+−7(Add -7 to both sides)
−x=−8−x−1=−8−1
(Divide both sides by -1)
x=8
Step: Substitute 8 for x in y=2x+7:
y=2x+7
y=(2)(8)+7
y=23(Simplify both sides of the equation)
Which equation can be solved to find the measure in degrees of ZPQS?
o - 60 - 180
2- 60 - 180
20-60-90
-60-90
Answers
0-192 29-17
Equation can be solced to find t
Can somebody solve this: x^4+2x^3-25x^2-26x+120
Answers
Answer:
(x + 5) • (x + 3) • (x - 2) • (x - 4)
Step-by-step explanation:
Step-1 : Multiply the coefficient of the first term by the constant 1 • 15 = 15
Step-2 : Find two factors of 15 whose sum equals the coefficient of the middle term, which is 8 .
-15 + -1 = -16
-5 + -3 = -8
-3 + -5 = -8
-1 + -15 = -16
1 + 15 = 16
3 + 5 = 8 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 3 and 5
x2 + 3x + 5x + 15
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x+3)
Add up the last 2 terms, pulling out common factors :
5 • (x+3)
Step-5 : Add up the four terms of step 4 :
(x+5) • (x+3)
Which is the desired factorization
(x + 5) • (x + 3) • (x - 2) • (x - 4)
PLEASE HELP! thank you!
Answers
Answer:
C
Step-by-step explanation:
I believe it is c if I counted right
The admission ticket for Pat Pat Zoo is $1.50 for children and $4.00 for adults. On a certain day, 2200 people went to the zoo and $5050 was collected. How many children and how many adults went to the zoo that day?
Answers
Answer:
1380 children and 820 adults went to the zoo that day
Step-by-step explanation:
System of Equations
Define the following variables
x = number of children that went to the zoo
y = number of adults that went to the zoo
On a certain day, 2000 people went to the zoo, thus:
x + y = 2000
Solving for x:
x = 2000 - y [1]
The admission ticket is $1.50 for children and $4.00 for adults and that same day, $5050 was collected, then:
1.50x + 4y = 5050 [2]
Substituting x from [1]:
1.50(2000 - y) + 4y = 5050
Operating:
3000 - 1.50y + 4y = 5050
3000 + 2.5y = 5050
Subtracting 3000
2.5y = 5050 - 3000 = 2050
Dividing by 2.5
y = 820
From [1]
x = 2200 - 820 = 1380
1380 children and 820 adults went to the zoo that day
Find the greatest common factor of 26 and 14
Answers
Answer: its 2
Step-by-step explanation:
14 can only = 1 x 14
& 2 x 7
what is the answer to
1/2q= -24
Answers
Answer:
48
Step-by-step explanation:
just divide it by 0.5....
1/2q ÷ 1/2 = -24 ÷ 1/2
q = -24 x 2
q = -48
Hope it helps!
________ figures are the same shape but have
different sizes.
Answers
Answer:
Dilated or reduced
Step-by-step explanation:
When you dilate a figure or shrink and reduce it it's the same shape but different size
Top surface of an umbrella look like regular octagon as shown in the figure below find the area
Answers
Answer:
Area of figure = 5,095 cm²
Step-by-step explanation:
Given:
Two trapezium
One rectangle
Find:
Area of figure
Computation:
Area of figure = Area of rectangle + Area of 2 trapezium
Area of figure = [L x B] + 2[(1/2)(Sum of parallel side)(Height)]
Area of figure = [118 x 15] + 2[(1/2)(118+15)(25)]
Area of figure = 1,770 + 3,325
Area of figure = 5,095 cm²
I MARK BRAINLYYYYYYYYYYYYYYYYYYY
Read this stanza from "The Raven" by Edgar Allan Poe.
Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore—
While I nodded, nearly napping, suddenly there came a tapping,
As of some one gently rapping, rapping at my chamber door.
"'Tis some visitor," I muttered, "tapping at my chamber door—
Only this and nothing more."
How does what happens in this stanza propel the action in the poem?
It introduces the story and sets up the coming events.
It establishes why Lenore has left the speaker alone.
It resolves the main conflict of the story.
It gives the speaker a reason to speak to the raven.
Answers
first of all I HAVE READ THIS POEM ABUNCH OF TIMES, so ur lucky. the first is that there is a person that is weak and then there is a noise and so basically its like a he is doing his business and something bothers the dude
but like can u be more specific what's the question?
Step-by-step explanation:
Answer:
The answer is A, It introduces the story and sets up the coming events.
Step-by-step explanation:
I got a 100% on this quiz.
Question 12
230-
90°
a) 50
b) 20
c) 25
d) 45
Answers
Answer:
45 because it can't be great then 50 or less then 25 and 20
Answer:
d or c id try d first
Step-by-step explanation:
which system of linear inequalities is represented by the graph?
Answers
Answer:
C
Step-by-step explanation:
How do I find the value of x?
Answers
Step-by-step explanation:
[tex] \tan(32) = \frac{x}{10} \\ x = 10 \tan(32) \\ x = 6.248 = 6.25[/tex]
HELP I NEED HELP ASAP
The perimeter of a rectangle is 8x-6 units. of the width is x-4 units , what is the length, in units, of the rectangle
A. 9x-10
B. 3x-5
C. 3x+1
D. 7x-2
Answers
Answer:
Step-by-step explanation:
Marisol sells wedding cakes. She charges a flat fee of $245 to make the wedding cake, plus an additional $120 per tier of cake. What linear equation can be used to graph the price (y) of one of Marisol's wedding cakes?
Answers
Answer:
120x + 245 = y
x = number of additional tiers
(edited to be in the proper order)
Please someone help me
Answers
x is always +3 ahead (30-27=3)
and y is always trailing behind x by -3
Answer:
y = x - 3
Step-by-step explanation:
You are given an x and a y and need to find the difference.
Set up a formula using one of the given x and y pairs and solve.
y = x - u plug in an x and y and solve for the unknown(u)
27 = 30 - u
-3 = -u
u = 3
Now plug the unknown into the original equation
y = x - 3
plssssss help giving brainly
Answers
Answer:
option b.
....................
Answer:
I know A for sure, maybe the second one is E but, I can't see E.
Step-by-step explanation:
A for sure
Please help me asap please
Answers
d
Step-by-step explanation:
first do the x, you see x^2-8x so you first want to do (x-4)^2. But then you will see we have created an +16 so wee -16 and then we get (x-4)^2+y^2-9. There is no y to the first power term, therefore you choose d after moving 9 to the Right hand side.
1 3/4 + 7/8 =
what does this equal ?
Answers
Answer:
use a mixed numbers calculator .
Step-by-step explanation:
2 5/8 is yo answer tho
Answer:
1 3/4 + 7/8 = 21/8 or 2 5/8
(9+10+1/1+1(1)-21+20)/2
Answers
Answer:
10
Step-by-step explanation:
(9 + 10+ 1/1 + 1(1) - 21 + 20) / 2
(9 + 10 + 1 + 1 -21 +20) /2
(21 - 21 + 20) /2
(20) / 2
10
Hope this helps
PLZ MARK BRAINLIEST
20/2-21+20/2
20/-19+20/2
20/1/2
20/2
=10
Hope this helps!
sin 46° to the 4 decimal place
Answers
The teachers had to transport 165 students by bus on a field trip. Each bus holds 64 students. How many buses do they need to order?
Answers
Answer:
3 buses
Step-by-step explanation:
Divide 165 by 64 ≈ 2.6 which you would round up to 3
64 • 3 = 192 students so there is room left over
Answer:
3 buses
Step-by-step explanation:
Evaluate the expression
4 x (52 – 12) – 6
.
Answers
Answer:
154
Step-by-step explanation:
4 x (52 - 12) - 6
Subtract the numbers
4 x 40 - 6
Multiply the numbers
160 - 6
Subtract the numbers
154