12x^2 + ax -20
if 3x + 4 is a factor of the expression above, what is the value of a?

Answers

Answer 1

Answer:

1

Step-by-step explanation:

(3x + 4)(px + q) = 12x^2 + ax - 20

3px^2 + 3qx + 4px + 4q = 12x^2 + ax - 20

3px^2 = 12x^2

p = 4

4q = -20

q = -5

px + q = 4x - 5

(3x + 4)(4x - 5) =

= 12x^2 - 15x + 16x - 20

= 12x^2 + x - 20

= 12x^2 + ax - 20

ax = x

a = 1


Related Questions

Please help me with this question

Answers

Answer-angle DBC is 79, Angle ABD is 31 and angle ABC is 110

Explanation-

The difference between 13 and a number is 4 more than twice the number

Answers

Answer:   3

Step-by-step explanation:

Let the number be 'a'.

Since the difference between 13 and a number is 4 more than twice the number,  then    13 - a = 2a + 4

            ⇒    13 - a = 2a + 4

                       2a + a = 13 - 4

                            3 a = 9

                               a = 3

∴ the number is 3

find the missing number so that the equation has no solutions. 5x+1-3x=_x+13

Answers

Answer:

You may just add 2 in the spot. Moreover, you get no solution.

Step-by-step explanation:

Hope this helped!

who wants points answer this ;)

5 x 5

Answers

Answer:

25

Step-by-step explanation:

ez thanks for the fr3e points

Have a good day bro cya)

It’s 25 and thanks for the points I guess

6. Nathan buys packages of bacon. This chart shows the numbers of
packages and the total cost to ship.
Number of Packages Shipping Cost
()
1
$8
2
$16
3
$24
4
$32
Which statement is true?
A The data is proportional, and the unit rate is $8 per package.
B. The data is not proportional, and the unit rate is $8 per package.
C. The data is proportional, and the unit rate is 8 packages per dollar.
D. The data is not proportional, and the unit rate is 8 packages per
dollar.

Answers

Answer:

A  The data is proportional and the unit rate per package is $8   This is because y= 8x

Step-by-step explanation:

/y relationship is no of packages = 1                                                                          x/ = total cost to ship = 8    = 8/1  = 16/2 = 24/3 = 32/4 means they are all proportional to 8/1 = 8    y = 8x  see graph attached  

Solve the equation −4(x − 1) + 6x = 2(17 − x)
solve for x.

Answers

Answer:

x = 15/2

Step-by-step explanation:

-4x + 4 + 6x = 34 - 2x

2x + 2x = 34 - 4

4x = 30

x = 30/4

x = 15/2

what is the distance from "-15" to 15 ?

15 , 0, -0 , 30

Answers

Answer:

the distance would be 30.

Answer:

30

Step-by-step explanation:

-15 to 0 is 15

0 to 15 is another 15

15+15 = 30

absolute value*

solve for a,b 2^a × 2^b=144 value of a+3b+2 is...

please solve it...urgent...​

Answers

Answer:

its a simple for me

Step-by-step explanation:

2+144 i

Could I get help with 8-11 please :(

Answers

Answer:

8. m∠1 = 64, m∠2 = 26, m∠3 = 36

9. m∠1 = 73, m∠2 = 58, m∠3 = 107, m∠4 = 49, m∠5 = 131

10. m∠1 = 34, m∠2 = 52, m∠3 = 38, m∠4 = 94, m∠5 = 56, m∠6 = 38

11. m∠1 = 62, m∠2 = 71, m∠3 = 109, m∠4 = 35, m∠5 = 109, m∠6 = 29, m∠7 = 47, m∠8 = 62

Step-by-step explanation:

8. m∠1 = 180 - (75 + 41) = 180 - 116 = 64

m∠2 = 90 - 64 = 26

m∠3 = 90 - 54 = 36

9. m∠3 = 180 - 73 = 107

m∠1 = 73

m∠2 = 180 - (73 + 49) = 180 - 122 = 58

m∠4 = 49

m∠5 = 180 - m∠4 = 180 - 49 = 131

10. m∠6 = 90 - 52 = 38

m∠3 = m∠6 = 38, m∠2 = 52

m∠5 = 180 - (86 + 38) = 180 - 124 = 56

m∠1 = 90 - 56 = 34

m∠4 = 180 - (34 + 52) = 180 - 86 = 94

11. m∠2 = 71

m∠3 = m∠5 = 180 - 71 = 109

m∠1 = 180 - (47 + 71) = 180 - 118 = 62

m∠4 = m∠2 - 36 = 71 - 36 = 35

m∠6 = m∠2 - 42 = 71 - 42 = 29

m∠7 = 47

m∠8 = m∠1 = 62

what is 3.26% of 1298

Answers

Answer:

42.3148

Step-by-step explanation:

3.26% of 1298

3.26/100*1298

42.3148

Please help me as soon as you can.I will give you 30points and who answers the quickest will be the brainiliest

Answers

Answer: 4.5 cm^3

100 mm in a cm so divide by 100

4500 divided by 100 is 4.5 cause you move the decimal to the left two times

8 and 10 in independent practice please

Answers

Answer:

8.) Rational

10.) Irrational

Step-by-step explanation:

8.) This is rational because although it is a decimal, it is terminating, meaning it has an end.

10.) This is irrational because it is a repeating decimal with seemingly no pattern.

Range is how far a graph goes up and down.
How far with the graph f(x) = In x go to the go down?
Hint: (Zoom in and out and move graph to the down.)

a. 4
b. just above 0
c. infinity

explain your thinking

Answers

Answer:

c

Step-by-step explanation:

The following table shows how many pizzas Dave’s pizzeria has sold each hour.

Write the slope intercept equation, and find the constant rate of change and the vertical intercept of the line. Explain how they are related to this situation.

Answers

Answer:

x=3.3333333333333333333333333333333

What is 193 divided by 16

Answers

Answer:

12.0625

Step-by-step explanation:

(x-x)(x+1)-x ( x+2)
(x-1) (x^3+x^2+x+1)

Answers

Answer:

−x^6−2x^5+x^2+2x

Step-by-step explanation:

find the value of :[5x+y+z][5x+y+z][5x+y+z]

Answers

Answer:

Step-by-step explanation:

(a + b + c)³ = a³ + b³ + c³ + 3a²b + 3a²c + 3ab² + 3cb² +3 ac² + 3bc² + 6abc

a = 5a  ;  b =y   ; c = z

(5x + y + z)(5z + y + z )(5z + y +z) = (5x + y +z)³

= (5x)³ + y³ +z³ + 3(5x)²y + 3(5x)²z + 3(5x)*y² + 3*z*y² + 3*5x*z² + 3*y*z² + 6*5x*y*z

= 125x³ + y³ +z³ + 3*25x²y + 3*25x²*z + 15xy² + 3zy² + 15xz² + 3yz² + 35xyz

= 125x³ + y³ + z³ + 75x²y + 75x²z + 15xy² + 3zy² + 15xz² + 3yz² + 35xyz

2. Is this graph a function?


A. This is not a function

B. This cannot be determined from graph

C. This is function

Answers

C. This is a function
C. This is a function.
You know this because none of the points are on the same lines going down.

I have to do IXL and i don't know what to do please help me!

3^{-2} as a fraction

Answers

Answer:

1/9

Step-by-step explanation:

(fraction in simplest form)

WHAT ARE CONGRUENCE LINES

Answers

Answer:

Line segments are congruent if they have the same length. However, they need not be parallel. They can be at any angle or orientation on the plane. ... Rays and lines cannot be congruent because they do not have both end points defined, and so have no definite length.

Find the slope on the graph shown

Answers

Answer:

4/3

Step-by-step explanation:

Answer:

The answer is 4/3.

The sum of a number and seven more than the number is 43. What is the number?

Answers

Answer:

18 is the number good luck

Step-by-step explanation:

18+25=43

Answer:

18,25

Step-by-step explanation:


PLEASE HELP
Rewrite the equation in Ax+By=C form.
Use integers for A, B, and C.
y+ 6 = 5(x-3)

Answers

Answer:

5x - y = 21  

Step-by-step explanation:

Given the linear equation in point-slope form, y + 6 = 5(x - 3):

In order to transform the given equation into its standard form, Ax + By = C, start by distributing 5 into the parenthesis:

y + 6 = 5(x - 3)

y + 6 = 5x - 15

Subtract 5x from both sides:

- 5x + y + 6 = 5x - 5x - 15

- 5x + y + 6 = - 15

Subtract 6 from both sides:

- 5x + y + 6  - 6 = - 15 - 6

- 5x + y = - 21

Divide both sides by -1:

[tex]\frac{-5x + y}{-1} = \frac{-21}{-1}[/tex]

5x - y = 21    

Hansen thinks his pet goldfish, Finn, might be lonely. So, Hansen buys another goldfish to keep Finn company. He also buys a large 10-gallon tank so the two fish can swim together. If Finn currently lives in a 2-quart fish bowl, how many times bigger is his new tank than his old bowl?

Answers

Answer:

Well, 1 gallon is 4 quarts so if Finn lives in a ½ Gallon tank divide 10 by 0.5 and you get 20, so his new tank is 20 times bigger than his old bowl.

Step-by-step explanation:

Math rocks! Have fun!

An ice climber stands at the edge of a crevasse that is 115 Ft wide. The angle of the depression from the edge where she stands to the bottom of the opposite side is 52 degrees. How deep is the crevasse at this point? Round off to the nearest foot.

Answers

depression from the edge where she stands to the bottom of the opposite side is 52 degrees. How deep is the crevasse at this point? Round off to the nearest foot

What is the change from 3 to -2

Answers

-5 because 3 - 5 = -2
-5. 3 to 0 on a number line is 3 units, and 0 to -2 on a number line is 2 units. If you add these together it equals to 5, but the 3 is not being increased and instead decreased by 5 so this results in -5.

Reasoning There were 43 students on the playground. Some more students joined them. Now there are 63 students on the playground. How many students joined? EnVision Lesson 3-5

Answers

Answer:

20

Step-by-step explanation:

63 - 43 = 20

Answer:

20 students

Step-by-step explanation:

because 43+s=63

63-43=20

s=20

so it have 20 students on the playground

use factor trees to find the GCF of 15, 25 show your work

Answers

Answer:

The Greatest Common Factor of  

15

and

25

is  

5

.

The factors of  

15

are  

3

and

5

(the number itself and 1 do not count).

The factor(s) of  

25

is  

5

. After all, it is a square number.

The only factor that is in common is  

5

(again remember that 1 does not count here -although  

1

is common,  

5

is higher)

Hope I helped!

Step-by-step explanation:

broborborogjdgjdsfjshfha

Answers

Answer:

waja

Step-by-step explanation:

᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼

Answer:

Not answerable

Step-by-step explanation:

What is the question?

Mrs. Snow divided thirty-six books equally
and placed them on nine desks. How many
books did she place on each desk?

Answers

Mrs. Snow divided thirty-six books equallyMrs. Snow divided thirty-six books equallyand placed them on nine desks. How many books did she place on each desk?

every desk have a 4 books

if you're going to divide 36 into 9 then you'll have the answer

hope it helps

Each desk has 4 books
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