1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitry [639]
4 years ago
7

PLEASE help me:( i'm desperate (and dumb): factor 2n^(3)+7n^(2)-2n-7

Mathematics
1 answer:
Diano4ka-milaya [45]4 years ago
4 0

x {}^{2} (2x + 7) - (2x + 7) \\ (2x + 7)(x { }^{2}  - 1) \\ (2x  + 7)(x - 1)(x + 1)
You might be interested in
HELPPP<br>3 1/5 ÷ 2/7=???​
kvasek [131]

Answer:

11 1/5

Step-by-step explanation:

3 1/5 ÷ 2/7 =

16/5 ÷ 2/7 =

KCF (Keep, Change, Flip)

Keep 16/5

Change ÷ to ×

Flip 2/7 to 7/2

16/5 × 7/2

16 x 7 = 112

5 x 2 = 10

112/10

11 2/10

11 1/5

Hope that helps :)

3 0
3 years ago
An archway is modeled by the equation y = -2x^2 + 8x. A rod is to be placed across the archway at an angle defined by the equati
DIA [1.3K]
To solve this problem you must apply the proccedure shown below: 

1. You have that the the <span>archway is modeled by the equation y=-2x^2+8x and the angle mentioned in the problem is defined by the equation x−2.23y+10.34=0.
</span>
 2. Therefore, you must susbtitute y=-2x^2+8x into x−2.23y+10.34=0, as below:

 x−2.23(-2x^2+8x)+10.34=0

 3. When you apply the distributive property, you obtain:

 x−2.23(-2x^2+8x)+10.34=0
 x+4.46x^2-17.84x+10.34=0
 4.46x^2-16.84x+10.34=0

 4. When you solve the quadratic equation, you obtain:

 x=3 units

 Therefore, the answer is the option D: D. 3 units.
3 0
4 years ago
Read 2 more answers
An album was purchased online for 12 dollars, but the company charged a 20% commission for providing it to its customers. How mu
eimsori [14]

Answer:

2.4 dollars

12 x .20 = 2.4

6 0
4 years ago
What are the vertices of triangle PQR?
Sergeeva-Olga [200]

Answer: <em>D. </em><em>P, Q and R.</em>

Step-by-step explanation:

<em>The vertices of the triangle PQR - it is P, Q and R.</em>

6 0
3 years ago
Help with 6? I really need all correct answers. Please help!
Lostsunrise [7]

Answer:

A

Step-by-step explanation:

(f - g)(x) = f(x) - g(x)

= \frac{2x+6}{3x} - \frac{\sqrt{x}-8 }{3x}

Since both fractions have a common denominator of 3x, then subtract the numerators leaving the denominator, that is the numerators simplified

2x + 6 - (\sqrt{x} - 8)

= 2x + 6 - \sqrt{x} + 8 = 2x - \sqrt{x} + 14

Hence

f(x) - g(x)

= \frac{2x-\sqrt{x}+14 }{3x} → A

3 0
4 years ago
Other questions:
  • Find the sum and product of each of these pairs of num- bers. express your answers as a base 3 expansion.
    8·1 answer
  • In a class of 6, there are 4 students who are secretly robots. If the teacher chooses 2 students, what is the probability that n
    13·1 answer
  • Evaluate the following expression.<br> 2-2<br> a0
    5·2 answers
  • Correlation corresponds to causation true or false ???
    8·1 answer
  • 1.995 x 10 to negative 23
    15·1 answer
  • What is the square root of 48? what is the square root of 1/49 ? what is the square root of 4/100 ?
    12·1 answer
  • A pair of pant and a t-shirt cost $34. If the pant cost $6.28 more than the shirt, how much did the pant cost?
    7·2 answers
  • Dan and Alan take turns mowing the grass of a yard that is 2400 square yards in area. Dan takes an hour to mow the whole lawn us
    8·1 answer
  • If one adult works 4 weeks per month at
    9·1 answer
  • In the town of Rockville, 35 of the students in middle school participate in organized sports after school. If 14 of them play b
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!