How do I factor an equation in the Ax^2+Bx+C form, if A= 2, B= 15, and C= -27. I tried using the x method but I don't think it's the right way.
Answers
Answer:
(2x - 3)(x + 9)
Step-by-step explanation:
A = 2
B = 15
C = -27
when we plug these numbers into the equation (Ax^2 + Bx + C) we get
2x^2 + 15x - 27
using the "X" method we have to multiply the A term and C term together
so -27 x 2 = -54
so we have to find factors of -54 that also add to the middle term, 15
- 3 and 18 add to 15 but also multiply to -54 so we can add these numbers into the X (refer to drawing)
Related Questions
Which is a related multiplication fact for 18 ÷ = 6
A. 18 ÷ 2 = 9
B. 6 x 3 = 18
C. 18 - 12 = 6
D. 6 x 4 = 24
Answers
Answer:
B. 6 × 3 = 18
Step-by-step explanation:
18 ÷ ? = 6
18 ÷ 6 = ?
3 = ?
So 18 ÷ 3 = 6 and 6 × 3 = 18
Approximately how much does it cost an average two-parent, two-child family to raise a child to age 17
Answers
Is the sky blue???????
No No the sky is not blue.
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
To understand why the sky is blue you need to remember how color works. Color is largely caused by how well an object absorbs the light spectrum. When you see a blue sky you only see blue because all the other colors were absorbed in the air. Any object with color works that way. For example a red ball is read because all the colors of light are absorbed by the ball except for red. This reflected light is what gives the object color.
This is what happens with the sky. The atmosphere is denser than we imagine and the different gases give the atmosphere unique properties in how it absorbs, diffuses, and reflects light. When sunlight passes through our atmosphere a portion of it is scattered and absorbed. The remainder either reaches the surface or is reflected back. The portion that makes it to us observers is 75 percent.
This process is called diffused sky radiation. So to review, we color because objects due to texture of dyes and surfaces absorb all light wavelengths and reflect back one or more. The reason we see the sky as blue is because the molecules in the air scatter the light absorbing most wavelengths of light except for blue.
In addition to this the sky is gray and overcast because of the water droplets in the atmosphere in the forms of clouds and humidity. water refracts light equally unlike air molecules in the atmosphere. This means we get the entirety of white light only it is dimmer just like when you shine a light through a white sheet.
The fact we see a blue sky is good thing because its shows that are atmosphere is at work shielding us from the full energy of the sun’s rays. While the sun is the largest source of energy to our planet, a lot of its high energy radiation that is deadly for living things. Our atmosphere plays it part by shielding us from that. So when you see a blue sky with your kid you can tell them it means the sky is acting like a huge shade blocking out the bad parts of the sun.
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Answer:
thats cool
Step-by-step explanation:
Simplify ∑=2 =n+1 ( + 4)
Answers
Step-by-step explanation:
Did you mean
[tex] = \sum \limits_{n = 2}^{4} (n + 1)[/tex]
[tex] = (2 + 1) + (3 + 1) + (4 + 1)[/tex]
[tex] = 3 + 4 + 5[/tex]
[tex] = 12[/tex]
What i can do: Solve each problem.
Answer this question on the photo
30 points
Answers
Answer:
1/3, 1 4/9, 9 8/15
Step-by-step explanation:
2. 1 4/9
3. 9 8/15
hope
it helps
A $22 item has been marked up 15%. What is the new price?
Answers
Answer:
The new price is $25.30.
22x0.15= 3.3.
22+3.3= 25.30
Step-by-step explanation:
hope this helps :)
Find the area and perimeter.
Answers
Answer: 1/7
Step-by-step explanation: 1/7 is the answer
Describe the rotational symmetry or symmetries of the figure.
Answers
Answer:
A) 180º
Step-by-step explanation:
i wont be symmetric at 90º or 270º or 120º or 240º. and it has rotational symmetry
The ratio of forks to spoons in the cafeteria is 15:6. If there are 45 forks, how many utensils are there altogether?
Answers
Answer:
15/6 = 45/x
18 = x,
45 + 18 = 63 utensils
Which is greater a bottle containing 64 fluid ounces or a bottle containing two liters of water?
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Answer:
sure the bottle of 2 liters is greater but just a little. the 64 oz are equal as 1.89 liters
Find the nth term of this quadratic sequence
3, 8, 15, 24, 35
Answers
Answer:
[tex]a_n= (n+2)^2-1 =(n+3)(n+1)[/tex]
Step-by-step explanation:
If you add 1 to each number, you get a perfect square: 4, 9, 16, 25, 36, which are the squares of 2, 3, 4, 5, 6...
[tex]a_n= (n+2)^2-1 =(n+3)(n+1)[/tex]
Note that the two expressions are the same, but one might be more convenient than the other if you are manually calculating terms.
Solve, if you please.
Answers
Answer:
1 does not represent a function, but 2 and 3 do
Step-by-step explanation:
1 is not a function because there are multiple points, with the same x value. 2 and 3 are functions because there are not multiple points with the same x value
How do you solve multi step equations (ik how to do) but with the variables and doing distributive property? I know to start you distribute parenthesis but after that I kinda get lost. Explain it by using an example equation and go deep into explanation and you will totally get brainiest!!
Answers
Answer:
Let's say we have this equation, for example⤵⤵⤵:
[tex]12 - 6(x + 10) = 60[/tex]
You obviously know that first you must distribute -6 amongst everything inside the parenthesis, and that will give you -6x - 60. Then you'd rewrite the equation with this in mind, to get
12 - 6x - 60 = 60
Next, you need to combine the like terms, in this case 12 and -60, to get -48. Now you have
-6x - 48 = 60
Afterwards, you'd do the opposite of -48 and add it on both sides of the equal sign. Now you'll have -6x = 108
Finally, you'd divide -6 on both sides, in order to get x by itself, to get x = -18
Hopefully, this example/explanation helps you understand the concept better :)
Simplify 3x^2y^4 x 2x^5y
Answers
help me pls its geometry
Answers
Answer:
The first answer is segment bisector
What is the answer to the equation 3=the square root of b-1
Answers
Answer:
B= 2
Step-by-step explanation:
Adrian had $848.25 in his account when he deposited m $20 bills and p dimes. Choose the
expression that represents the amount in his account after the deposit.
(ANSWER FAST PLEASE)
Answers
Answer:
Second option
Step-by-step explanation:
It's subtraction
Answer:
A
Step-by-step explanation:
All of the points in the graph are on the same line. Find the slope of the line.
Answers
Answer:
Step-by-step explanation:
take (1,3) and (9,7)
slope=(7-3)/(9-1)=4/8=1/2
An isosceles triangle has an angle that measures 80°. Which other angles could be in that isosceles triangle? 50° 20° 70° 80°
Answers
Answer: 80 and 20
Step-by-step explanation:
the sides of a triangle need to add up to 180 80+80+20=180
Triangle B is a scale image of Triangle A as shown. Find the base of Triangle A in centimeters. Show your work. (please help! ive been stuck on this for a while!)
Answers
Answer:
? = 13
Step-by-step explanation:
40.5/9 = 4.5
9 x 4.5 = 40.5
X x 4.5 = 58.5
4.5X = 58.5
4.5X/4.5 = 58.5/4.5
x = 13
Answer:
13
Step-by-step explanation:
We are given the sides of one of the triangles. If you take 9/40.5, you get .2222222. We can then use that to find the base. If you take 58.5, multiply it by .22222, you get 13!
The number of students in a school is between 500 and 600. If we group them into groups of 12, 20, or 36 each, 7 students are always left over. How many students are in this school?
Answers
There are 547 students in this school.
How did we arrive at the value?Let's solve this problem step by step.
1. We know that the number of students is between 500 and 600 and leaves a remainder of 7 when divided by 12, 20, or 36.
2. To find the number of students, we need to find a number that satisfies all these conditions.
3. Let's start by finding the least common multiple (LCM) of 12, 20, and 36, which is 180.
4. Now, we can represent the number of students as 180n + 7, where n is a positive integer.
5. To find a value of n that falls within the range of 500 to 600, we can try different values for n until we get a suitable number.
Let's calculate:
For n = 3: 180 * 3 + 7 = 547 (Within the range)
For n = 4: 180 * 4 + 7 = 727 (Exceeds the range)
So, there are 547 students in this school.
learn more about LCM: https://brainly.com/question/16054958
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What are the vertices of the image r(90,0) (BCD)
Answers
The percent change from 45 to 90 is
Answers
A change from 45 to 90 represents a positive change (increase) of 100%
Use the formula found below on this webpage to find the percent change by replacing the given values:
Percent change = New - Old|Old| × 100%
Percent change = 90 - 45|45| × 100% =
4545 × 100 = 100% (increase)
Where: 45 is the old value and 90 is the new value. In this case we have a positive change (increase) of 100 percent because the new value is greater than the old value.
SOMONE EXPLAIN CALCULUS TO MEEEE
Answers
Answer:
Calculus is when you make that amount of time tinier and tinier and tinier, and that makes the distance tinier and tinier and tinier too, so that, at that moment, the tiny distance divided by the tiny time is 31 miles per hour, but a second later it might be 30 mph or 32 mph or something else.
Step-by-step explanation:
Calculus is a branch of mathematics that involves the study of rates of change. ... Calculus helped to determine how particles, stars, and matter actually move and change in real time. Calculus is used in a multitude of fields that you wouldn't ordinarily think would make use of its concepts.
Categories
It has two major branches, differential calculus and integral calculus; the former concerns instantaneous rates of change, and the slopes of curves, while integral calculus concerns accumulation of quantities, and areas under or between curves.
Pls I need help!!!! Will mark Brainiest!!!
Answers
Answer:
The answer is 2,000,000,000
Step-by-step explanation:
I hope this helped
Find the value or expression for 0.
1. sin(55) = cos( )
2. sin ( ) = cos(28)
3. cos(y) = sin( )
Answers
Using complementary angles, it is found that the values for the expressions are given as follows:
1. sin(55) = cos(35).
2. sin (62) = cos(28).
3. cos(y) = sin(90 - y).
What are complementary angles?
Two angles are called complementary if the sum of their measures is of 90º; If two angles are complementary, the sine of one is the cosine of the other.
Hence, since 55 + 35 = 62 + 28 = 90, we have that the values are given as follows:
1. sin(55) = cos(35).
2. sin (62) = cos(28).
3. cos(y) = sin(90 - y).
More can be learned about complementary angles at https://brainly.com/question/21107319
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Round the following numbers to the nearest 100. 468 1350 6849
Answers
The solution is, rounding off the numbers to the nearest 100. 468 1350 6849, is: 500, 1300, 6800.
What is round off?Rounding off means a number is made simpler by keeping its value intact but closer to the next number. It is done for whole numbers, and for decimals at various places of hundreds, tens, tenths, etc.
here, we have,
given that,
the numbers are 468, 1350, 6849
now, we have to Round the following numbers to the nearest 100.
To round a number to the nearest 100, look at the tens digit. If the tens digit is 5 or more, round up. If the tens digit is 4 or less, round down.
so, we get,
468 => 6>5, so, 468 =>500
1350 => 35 < 50, so 1350 => 1300
6849 => 4<5 , so , 6849=> 6800
Hence, The solution is, rounding off the numbers to the nearest 100. 468 1350 6849, is: 500, 1300, 6800.
To learn more on round off click:
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Describe a rigid transformation that takes Polygon to Polygon .
Answers
Answer:
If you mean moving a shape like sliding, then it would be a translation.
Answer:
below
Step-by-step explanation:
Rigid transformation will keep the size and shape of the original object after transformation. It has 3 basic types : rotation, translation, reflection and any combination of 3 types.
help please and thank you, I'll mark u brainly
Answers
Please help me with this homework
Answers
Answer:
The third one
y+1=-2(x-3)
Step-by-step explanation:
Solve y+1=-2(x-3)
y+1=-2(x-3) becomes y=-2x+5
Then just graph it.
