All categories

3 years ago

The sum of two trinomials is 7x2 - 5x + 4. If one of the trinomials is 3x2 + 2x - 1, then what is the other trinomial?

Mathematics

1 answer:

Flura [38]3 years ago

7 0

Answer: 4x^{2} - 7x + 5

Step-by-step explanation:

Let y be the number

$3x^{2} +2x - 1 + y = 7x^{2} - 5x + 4$

$y = 7x^{2} - 5x + 4 - 3x^{2} - 2x + 1$

$y = 4x^{2} - 7x + 5$

You might be interested in

Solve for b. 3-2(b-2)=2-7b3−2(b−2)=2−7b

lyudmila [28]

Step-by-step explanation:

3 - 2(b - 2) = 2 - 7b

To solve this first distribute -2 to (b - 2)

3 + (-2b + (-2) x -2) = 2 - 7b

when we simplify this it becomes:

3 + (-2b + 4) = 2 - 7b

We take (-2b + 4) out of the parenthesis:

3 - 2b + 4 = 2 - 7b

Now simplify again.

7 - 2b = 2 - 7b

Now send all the b's to one side and constants on the other.

7 - 2 = -7b +2b

5 = 5b

b = 1

3 0

2 years ago

How does the job satisfaction score for weeks 5-8 compare to weeks 1-4?

MrRa [10]

The correct comparison for Weeks 5-8 is higher than Week 1-4, hence, the job satisfaction for Week 5-8 is 17% higher.

Job Satisfaction Score :

Week 1 = 3.50
Week 2 = 3.40
Week 3 = 3.30
Week 4 = 3.60
Week 5 = 4.20
Week 6 = 4.00
Week 7 = 4.10
Week 8 = 3.90

Job Satisfaction for week 1 - 4 :

Week 1 + Week 2 + Week 3 + Week 4
(3.50 + 3.40 + 3.30 + 3.60) = 13.80

Job Satisfaction for Week 5 - 8 :

Week 5 + Week 6 + Week 7 + Week 8
(4.20 + 4.00 + 4.10 + 3.90) = 16.20

Difference between the two categories :

[(Week 5 - 8) - (Week 1-4)] / Week 1-4] × 100%

(16.20 - 13.80) / 13.80 × 100%

(2.4 / 13.80) × 100%

0.1739 × 100%

= 17.39%

Therefore, the job satisfaction for Week 5 - 8 is about 17% higher than Week 1 - 4

Learn more :brainly.com/question/13218948

8 0

3 years ago

What is the perimeter of khgj?

kaheart [24]

Answer:

58 in

Step-by-step explanation:

The fact that the rectangles are congruent means both have a length of 18 in and a width of 11 in. The perimeter is ...

P = 2(L +W)

P = 2(18 in + 11 in) = 2(29 in)

P = 58 in

The perimeter of KHGJ is 58 inches.

3 0

3 years ago

What is the answer to this equation? 5/4 + 4m/9 = 65/36

____ [38]

M=1.25 should be your answer!

7 0

3 years ago

Tara is the editor of the school newspaper. She tries to devote about 1/2 of the paper to news, 1/3 to pictures, and the remaind

Klio2033 [76]

5/6 of the paper is devoted to news and pictures

first I made the fraction have equal denominators which was 6 by doing that I multiplyed the numerator and the denominator

1/2
1×3=3
2×3=6
therefore 1/2 being equivalent to 3/6

1/3
1×2=2
3×2=6
therefore 1/3 being equivalent to 2/6

now you would be able to add the numerators, so 2+3=5
therefore being 5/6 of the paper is devoted to news and pictures

4 0

3 years ago