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victus00 [196]
3 years ago
15

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 7x − 1). If the final answer is written in the form Ax2 + Bx + C, wha

t is the value of B (the coefficient in front of x)?
Write only the numeric value (no variables should be typed in your response).
Mathematics
2 answers:
Andrews [41]3 years ago
8 0

Answer:

 

3x + 2x2 + 4 = 5

3x + 2x2 + 4 – 5 = 5 – 5

First be sure that the right side of the equation is 0. In this case, all you need to do is subtract 5 from both sides.

 

3x + 2x2 – 1 = 0

2x2 + 3x – 1 = 0

Simplify, and write the terms with the exponent on the variable in descending order.

 

2x2

+

3x

–

1

=

0

↓

 

↓

 

↓

 

 

ax2

 

bx

 

c

 

 

 

a = 2, b = 3, c = −1

 

Now that the equation is in standard form, you can read the values of a, b, and c from the coefficients and constant. Note that since the constant 1 is subtracted, c must be negative.

Answer

2x2 + 3x – 1 = 0; a = 2, b = 3, c = −1

Step-by-step explanation:

Mila [183]3 years ago
6 0

Answer:

;...

Step-by-step explanation:

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Leya [2.2K]

Answer:

$5.75

Step-by-step explanation:

I hope you get it right!

5 0
2 years ago
Yolanda made 21 hats. Yolanda made 3 times as many hats as Greg. Let n be the number of hats that Greg made.
castortr0y [4]

Answer:

63

Step-by-step explanation:

A) 21(3)=n

B) 63

3 0
3 years ago
Read 2 more answers
george is 2 years older than sam and sam is 3 years older than alex. the total of their ages is 35. write and solve the equation
Darina [25.2K]
This breaks down into a system of equations. George will equal G, Sam will equal S and Alex will equal A.      G=S+2     S=A+3      G+S+A=35      since S=A+3, we can substitute S for (A+3). If we plug that into the G=S+2, we get G=(A+3)+2. This simplifies to G=A+5. 

our ultimate goal is to be able to substitute for two of their ages so we can solve the last equation for one age or variable. It would be easiest to solve for A. 

so far we can substitute for two variables, S=A+3.  and G=A+5

Next, we can plug this into the last equation and get 35=(A+3)+(A+5)+A
if we add like terms we get 35=3A+8. Next, we solve the equation by first subtracting 8 from each side. we then get 27=3A, then we divide each side by 3 to solve for A and get A=9.

Now we have one age, we need to find the other two. We can solve this by plugging A to the other two equations. if we do that we get S=(9)+3, or S=12. If we do it to the other equation we get G=(9)+5, or G=14 

So your final answer would be George is 14, Sam is 12, and Alex is 9.
5 0
3 years ago
when solving the equation 5x-3=5, MaReeco rewrote the equation as 5x =2.Did MaReeco perform an acceptable move to this equation?
aliina [53]

Answer:

Please check the explanation.

Step-by-step explanation:

Given the equation

5x-3=5

MaReeco's rewrote equation is given by

5x = 2

As MaReeco subtracted 3 to the right side of the equation, which imbalanced the equation. Hence, it is not correct.

Correction:

For the next step, MaReeco should have added 3 to both sides

i.e.

5x-3+3=5+3

5x=8

Therefore, the acceptable move would have been:

  • 5x=8
6 0
2 years ago
Order the numbers from least to greatest. -7/2, -2.8, -5/4, 4/3, 1.3
bagirrra123 [75]
There u go =) If u have any questions then ask me

4 0
3 years ago
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