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lozanna [386]
3 years ago
8

The expression below is the factorization of what trinomial?

Mathematics
1 answer:
Lapatulllka [165]3 years ago
6 0
The answer is:  [A]:   45x² + 81x + 36 .
_________________________

Explanation:  Use "FOIL" technique: (First, Outer, Inner, and Last Terms); 
                       then, combine the "like terms", to simplify. 
__________________________________________

(5x+4)(9x+9) = 45x² + 45x + 36x + 35 = 45x² + 81x + 36 .
                                                                       (which is answer choice: "A".).
________________________________________________
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Solve for x. Write the smaller solution first, and the larger solution second. (x -4)(-5x +1)=0
Vesnalui [34]

The product of the two is 0, so one of them have to equal 0 as any number multiplied by 0 is 0.

First solution: x - 4 = 0

If x - 4 = 0, then x = 4. So the first solution for <em>x </em>is 4.

Second Solution: -5x + 1 = 0

Solving...

-5x + 1 = 0

-5x = -1

x = -1/-5

x = 1/5 or 0.2


So x = 0.2 and 4

4 0
3 years ago
Read 2 more answers
What is 5 1/2% simplified as a fraction in simplistic form
zzz [600]

Answer:

11/200

Step-by-step explanation:

=5.5%

=5.5/100

=55/1000

=55/5

------------

1000/5

= 11/200

8 0
3 years ago
Solve this using substitution method. Many many thanks
In-s [12.5K]

Answer:

y=2 and x=1

Step-by-step explanation:

sub 2 into 1

3(15-7y) + 4y= 11

45 - 21y +4y =11

-21y+4y= 11-45

-17y= - 34

y=2

Therefore sub y into x equation

x=15-7(2)

x= 1

8 0
2 years ago
Read 2 more answers
Write an equation in slope - intercept form for the line that satisfies each set of conditions
ivanzaharov [21]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

(1)

Rearrange 3x + 2y = 1 into this form by subtracting 3x from both sides

2y = - 3x + 1 ( divide all terms by 2 )

y = - \frac{3}{2} x + \frac{1}{2} ← in slope- intercept form

with slope m = - \frac{3}{2}

Parallel lines have equal slopes, thus

y = - \frac{3}{2} x + c ← is the partial equation

To find c substitute (- 6, 15) into the partial equation

15 = 9 + c ⇒ c = 15 - 9 = 6

y = - \frac{3}{2} x + 6 ← equation of line

(2)

Rearrange x + 2y = 8 into slope- intercept form by subtracting x from both sides

2y = - x + 8 ( divide all terms by 2 )

y = - \frac{1}{2} x + 4 ← in slope- intercept form

with slope m = - \frac{1}{2}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{1}{2} } = 2, thus

y = 2x + c ← is the partial equation

To find c substitute (5, - 2) into the partial equation

- 2 = 10 + c ⇒ c = - 2 - 10 = - 12

y = 2x - 12 ← equation of line

3 0
3 years ago
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Am I right please tell me I really NEED IT
AlladinOne [14]

Answer:

it would 13

Step-by-step explanation:

19-6=13 there you go

5 0
3 years ago
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