Answers
9514 1404 393
Answer:
B. 3x^2 +11x -20 = 0
Step-by-step explanation:
For solutions p and q, the quadratic will be
(x -p)(x -q) = 0
We notice that the leading coefficients of the offered answer choices are greater than 1, so it will be convenient to use a value that "clears fractions."
(x -4/3)(x -(-5)) = 0
3(x -4/3)(x +5) = 0 . . . . multiply by 3 to clear the fraction
(3x -4)(x +5) = 0 . . . . . . clear the fraction
3x(x +5) -4(x +5) = 0 . . use the distributive property
3x^2 +15x -4x -20 = 0 . . . . use the distributive property again
3x^2 +11x -20 = 0 . . . . collect terms
_____
The constant in the product of factors is the product of roots:
(x -p)(x -q) = x^2 -(p+q)x +pq
Here, that would mean the constant would be (4/3)(-5) = -20/3.
If we compare the above quadratic to the standard form:
ax^2 +bx +c = 0
we find that we can divide the standard form equation by 'a' to get ...
pq = c/a
That is, c/a = -20/3, so we might start looking for an answer choice that has a leading coefficient of a=3 and a constant of c=-20.
Related Questions
. Uno de los problemas ambientales es la escasez de agua para proveer de agua a una comunidad, se necesitan 3846 metros de
Tuberia, y cada tubo mide 6 metros de largo. ¿Cuantos tubos se necesitan?
Answers
Answer:
n = 641
Step-by-step explanation:
Pipe required to provide water is 3846 m
Length of each pipe is 6 m
We need to find the no of tubes required. Let there are n tubes. It can be calculated as follows :
[tex]n=\dfrac{3846 }{6}\\\\n=641[/tex]
Hence, 641 tubes will be needed.
The juice dispenser in the cafeteria holds 21 1/4 pints of juice. The glasses in the cafeteria only hold 1/4 of a pint of juice. How many full glasses can be served at breakfast?
Answers
Answer:
85 can
Step-by-step explanation:
21 x 4 = 84
Then you add one more because there is still 1/4 of a pint left and each cup can hold that much too.
Find the slope of each line.
Answers
Answer:
the slope of that line is 3/4
It cost $5000 to feed
100 guest at a wedding. It
cost $2750 to feed 45
guests. What is the cost
per plate?
Answers
Answer:
Okays so for 100 guests we can make the equation $5000 ÷ 100 = $50.00
For 100 guests at the wedding it would cost $50.00 per plate
For 45 guests we can make the equation $2750 ÷ 45 = $61.111111111111, it would be a repeating decimal
For 45 guests at the wedding, it would cost $61.111111111111
I hope that this can help you! ^‿^
Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?
Answers
Can i please get the equation so i can solve it
I will edit this after you put it
Ignore this \/
Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28
Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?Under a dilation with center P and scale factor k, A' is the image of A. What is the value of k if PA = 7, and PA' = 28?
HELP HELP HELP ASAP!
Solve the following system of equations using the substitution method.
y = x – 1
2x – 3y = –1
Question 19 options:
A)
(4,5)
B)
(3,4)
C)
(4,3)
D)
(5,4)
Answers
Answer:
b
Step-by-step explanation:
Answer: Its C (4,3)
Step-by-step explanation: I did the math.
i really need help please please
Answers
Answer:
I think the first answer is angle some property..
Identify if the given sequence is an arithmetic sequence or not. Explain your
answer.
a.) 2, 8, 14, 20, …
b.) 9, 13, 17, 20, 23, …
Answers
Answer:
a is arithmetic sequence.
Step-by-step explanation:
option a is an arithmetic sequence because we use d=t2-t1 formula
so like wise,
8-2=6
14-8=6
20-14=6
Which table represents a linear function?
Answers
start with the value of 25, double it, and then calculate the percent increase.
Answers
Answer: 100%
Step-by-step explanation:
If you start with 25 and double it you will get 50 and 25 is half of 50 so the percent increase will be 100%.
Make a list of professionals who routinely apply geometry in their work. Start by reading about these careers that use geometry
Answers
Answer:
Architect
Surveyor
Mechanical Engineer
Drafter
Step-by-step explanation:
Architects utilize geometric principles while designing layouts for their ongoing projects, which can include buildings, electrical systems, and plumbing architecture.
Surveyors use geometry to take exact measurements of boundaries for different types of property.
Mechanical engineers, some of the most diversified engineers, use a multitude of geometric concepts to design mechanical devices, or update existing structures
Drafters use the same geometric knowledge and applications as architects and engineers, drafters create design plans with the use of computer-aided design (CAD) software.
Answer:
architects
civil engineers
designers who use computer-aided design
astronomers
air traffic controllers
interior designers
jewelry designers
painters
photographers
sculptors
landscape designers
carpenters
plumbers
Step-by-step explanation:
plato/edmentum
What is the difference (2 x minus 3) minus (x minus 1)?
Answers
Answer:
2x - 3 - (x-1)
2x - 3 -x +1
x-2
Answer:
x-2 or B. if you're on edgWrite the equation of the line that passes through the points (1, 7) and (5, 15) using function notation.
Answers
Answer:
use the formula for a line through two points
[tex]y - y_{1} = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} \times (x - x_{1})[/tex]
plug in the given points:
[tex]y - 7 = \frac{15 - 7}{5 - 1} \times (x - 1)[/tex]
[tex]y = \frac{8}{4} \times (x - 1) + 7[/tex]
[tex]y = 2 \times (x - 1) + 7 \\ y = 2x - 2 + 7 \\ y = 2x + 5[/tex]
HELP HELP HELP HELP!!!
Answers
Answer:
If Kasey bought one drink, she will be able to buy 6 food items
Step-by-step explanation:
We know Kasey has $8 and if she bought one drink, she will have $7.5
We have to find how many food items she can buy (all of them are $1.25)
$7.5/1.25= 6 food items
If Kasey bought one drink, she will be able to buy 6 food items
Hope this helps!
Answer:
6 items
Step-by-step explanation:
8.00 - 0.50 = 7.50
She has $7.50 to spend on food after buying one drink
7.50 ÷ 1.25 = number of food items she can buy
7.50 ÷ 1.25 = 6
(-4x + 5)-( 6x +7)=0
Answers
Answer:
x = -1/5
Step-by-step explanation:
*Steps as a proof*
_________
(-4x + 5)-(6x + 7) = 0
[given]
_____________
1(-4x + 5)-1(6x + 7) = 0 [identity property of multiplication]
1(-4x + 5) + -1(6x + 7) = 0. [additive inverse property]
___________________________________
1(-4x + 5) + -1(6x) + -1(7) = 0 [distributive property]
___________________________________
(-4x + 5) + (-6x - 7) = 0 [multiplying anything by 1 is the same]
___________________________________
(-4x + -6x) + (5 + -7) = 0 [associative property of addition]
_____________________________________
-4x + -6x + (5 + -7) = 0 [subtraction property of equality] - (5 + -7). - (5 + -7)
_______________________
-4x + -6x = -(5 + -7) [simplification]
-4x + 6x = -1(5 + -7) [identity property of multiplication]
-4x + -6x = -1(5) + -1(-7) [distributive property]
-4x + -6x = -5 + 7 [simplification]
-4x + -6x = 2 [simplification]
-10x = 2 [division property of equality]
÷10 ÷10
______
-x = 2/10 [negative one property of multiplication]
×-1 ×-1
x = -2/10 [simplification]
x = -1/5 [simplification]
__________________________
image attached below
Answers
Answer:
1) Expression
2) Equation
3) Equation
4) Expression
Step-by-step explanation:
An equation always contains an equal sign, so in this case, if it doesn't contain an equal sign, it's an expression.
For 2 and 3, you can see that there is an equal sign, but for 1 and 4, there is not.
Therefore, 1 and 4 are expressions and 2 and 3 are equations.
I hope this helped.
5x+2(x+3) is an expression
5x=2(x+3) is an equation
8m-3m+5=16 is an equation
8m-3m+5-16 is an expression
An equation always and I mean ALWAYS uses a = sign.
An expression is a combination of numbers and variables and symbols.
Hope that's useful
Given ∠A and ∠B are vertical angles with m∠A=20x+10 and m∠B=30x−10 .
What is x?
Enter your answer in the box.
ILL GIVE BRAINLIEST THANK YOU
Answers
Answer:
since angle a and b are vertical angles
therefore we can say that,
i) <A=<B
or,20x+10=30x-10
or,10+10=30x-20x
or,20=10x
.°. x=10.
Answer:
9
Step-by-step explanation:
How i do this yall..?
Answers
Solve for nn by simplifying both sides of the equation, then isolating the variable.
n=4, −2
Answer:
We know that a modulus gives us the absolute value of a number
Hence, this modulus will give a positive value, regardless of the actual value in the modulus
| -1 + n | = 3
(-1 + n) or (1 - n) = 3 -------------------This tells us that either one of the values will give us the same answer
-1 + n = 3 or 1 - n = 3
n = 4 or n = -2
Tiva earns $48 for 6 hours of babysitting.
Complete each statement if Tiva keeps earning her babysitting money at this rate.
For 8.5 hours of babysitting, Tiva will earn $___
If Tiva babysits for___ hours, she will earn $32.
Answers
Answer:
a. 68$ b. 4 hrs
Step-by-step explanation:
-Find how much she earns in 1hr
48$/6h = 8$/h
a. 8.5 * 8 = 68$
b. 32$ : 8 = 4 hours
Answer:
A.)68
B.)32
Step-by-step explanation:
For 8.5 hours of babysitting, Tiva will earn $ 68
If Tiva babysits for 4 hours, she will earn $32.
8 points if answered!!
Answers
what is the slope of the line
Answers
Answer:
The slope is 1/2.
Step-by-step explanation:
To find the slope of a line, use the equation (y2-y1 / x2-x1)
Let's say (4,3) is x2 and y2. That means (0,-2) is x1 and y1.
(3 - 0) / (4 - -2)
(3 - 0) / (4 + 2)
3/6, which simplifys to 1/2
What is the product of (3 + 2i) and (-8 - 41)?
Answers
Answer:
-147 - 98i
Step-by-step explanation:
(3 × -8) + (2i × -8) + (3 × -41) + (2i × -41)
-24 - 16i - 123 - 82i
= -147 - 98i
Wait i got a question is that little star suppose to be this × or this ÷
Answers
Answer:
You're really gonna sit there and just focus on your life all day ... And the section was tiny—it covered the same amount of ...
Step-by-step explanation:
make me as brain liest
Identify the set of numbers that makes up the domain in the relation {(-2,-3),(0 ,2), (2, 4) ,(3, -6)}
A. -2, 0, 2, 3
B.-2, 0, 3, 4
C. -6,-2, 2, 4
D. -6, -2, 0, 2, 3, 4
Answers
find the area of the figure
Answers
Answer:
121π or ≈380.13
Step-by-step explanation:
Area of a circle = πr²
A = π(11)²
A = 121π or A ≈ 380.13
8 – 3(k + 2) = 2 – 3k
Answers
Answer:
the answer is 0
Step-by-step explanation:
you distribute the 3 which gives
8 - 3k - 6 = 2 - 3k
then you combine like terms and end up with
2 - 3k = 2 - 3k
then you subtract 2 on each side which gives
- 3k = - 3k
and then when you have to keep combining like terms so you add the 3k on both sides which gives u 0
Find the measure of angle b.
PLEAASE HELP!!
The answer is 123.
I need to show work
Answers
Answer:
b and 57 are adjacent and supplementary angles so
b+59=180
b=180-59=121
Answer:
123
Step-by-step explanation:
since a straight line is 180° you need to do this:
180°-57°
which is equal to 123
therefore the measure of angle of b is 123°
In order to know that a graph shows a proportional relationship WITHOUT finding any y/x ratios or doing division, two conditions must be met. Name ONE of the two ways you know a graph is proportional JUST BY LOOKING AT IT. (You will come across another question that asks you to name the other condition, if you haven't already.) (10 points) please help
Answers
Answer:
I wish I've known, but try using Symbo-Lab or Math-Way. They help a lot.
Step-by-step explanation:
One factor of the polynomial 2x3 -3x2 – 3x + 2 is (x - 2), which expression represents the other factor, or factors, of the polynomial?
A. (2x + 1)(x - 1)
B (2.x2 - x+ 1)
C (2x2 + 1)
D. (2x - 1)(x+1)
Answers
Answer:
It's actually D (2x - 1)(x+1)
Step-by-step explanation:
The required factor of the polynomial 2x³ - 3x² - 3x + 2 is (2x - 1)(x + 1).
Given that,
One factor of the polynomial 2x3 -3x2 – 3x + 2 is (x - 2), which expression represents the other factor, or factors, of the polynomial is to be determined.
What are the factors?
factors can be defined by splitting the value into multipliable values.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
x - 2 is one factor of 2x³ - 3x² - 3x + 2 than
( 2x³ - 3x² - 3x + 2 ) / x - 2 = 2x² + x -1 = (2x - 1)(x + 1)
Thus, the required factor of the polynomial 2x³ - 3x² - 3x + 2 is (2x - 1)(x + 1).
Learn more about Factors here:
https://brainly.com/question/24182713
#SPJ2
In the triangle above, a = 34 a=34a, equals, 34. What is the value of b + c b+cb, plus, c ?
Answers
Answer:
c6
Step-by-step explanation:
