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
Vsevolod [243]
3 years ago
5

. Twice a number decreased by eight. if the number N, the expression is

Mathematics
1 answer:
tester [92]3 years ago
5 0

Answer:

2n-8

Step-by-step explanation:

twice n is 2n. decreased by 8 is the -8

You might be interested in
Seller Andy require a 2.5% deposit on all offers. Buyer josh wants to offer $452,000 for the property. The property was appraise
arlik [135]

Answer: $11,300

Step-by-step explanation:

Given the following :

Buyer Josh's offering price = $452,000

Required deposit rate = 2.5%

Earnest money deposit is the product of :

Offering price × required deposit accepted

$452,000 × 2.5%

$452,000 × 0.025 = $11,300

7 0
3 years ago
Surface area is the sum of the areas of all the surfaces of a three-dimensional object.
Dmitry [639]

Answer: True

Think of a 3D box. It has 6 faces and the surface area is the total of all six individual rectangular faces. This idea applies to any polyhedron.

3 0
3 years ago
Find the partial fraction decomposition of the rational expression with prime quadratic factors in the denominator
SpyIntel [72]
\dfrac{5x^4-7x^3-12x^2+6x+21}{(x-3)(x^2-2)^2}=\dfrac{a_1}{x-3}+\dfrac{a_2x+a_3}{x^2-2}+\dfrac{a_4x+a_5}{(x^2-2)^2}
\implies 5x^4-7x^3-12x^2+6x+21=a_1(x^2-2)^2+(a_2x+a_3)(x-3)(x^2-2)+(a_4x+a_5)(x-3)

When x=3, you're left with

147=49a_1\implies a_1=\dfrac{147}{49}=3

When x=\sqrt2 or x=-\sqrt2, you're left with

\begin{cases}17-8\sqrt2=(\sqrt2a_4+a_5)(\sqrt2-3)&\text{for }x=\sqrt2\\17+8\sqrt2=(-\sqrt2a_4+a_5)(-\sqrt2-3)\end{cases}\implies\begin{cases}-5+\sqrt2=\sqrt2a_4+a_5\\-5-\sqrt2=-\sqrt2a_4+a_5\end{cases}

Adding the two equations together gives -10=2a_5, or a_5=-5. Subtracting them gives 2\sqrt2=2\sqrt2a_4, a_4=1.

Now, you have

5x^4-7x^3-12x^2+6x+21=3(x^2-2)^2+(a_2x+a_3)(x-3)(x^2-2)+(x-5)(x-3)
5x^4-7x^3-12x^2+6x+21=3x^4-11x^2-8x+27+(a_2x+a_3)(x-3)(x^2-2)
2x^4-7x^3-x^2+14x-6=(a_2x+a_3)(x-3)(x^2-2)

By just examining the leading and lagging (first and last) terms that would be obtained by expanding the right side, and matching these with the terms on the left side, you would see that a_2x^4=2x^4 and a_3(-3)(-2)=6a_3=-6. These alone tell you that you must have a_2=2 and a_3=-1.

So the partial fraction decomposition is

\dfrac3{x-3}+\dfrac{2x-1}{x^2-2}+\dfrac{x-5}{(x^2-2)^2}
7 0
3 years ago
Please help asap 25 pts
kolezko [41]

Hey look The answer is D

4 0
3 years ago
Determine whether each of the following pairs of angles have equal measures. Drag and drop each pair
never [62]

Answer:

MJK & PJR = Unequal

LJP & NJR = Equal

KJR & MJP = Equal ? (not too sure with this one)

MJP & PJR = Unequal

KJL & LJM = Unequal

8 0
4 years ago
Other questions:
  • If g(x) = 5x + 16; then g(-2) =
    12·1 answer
  • What is 2/7 divided by 4? <br> A. 2/14 <br> B. 1/14<br> C. 2/11<br> D. 1/28
    14·2 answers
  • Help!!!!!!!!!!!!!!!!!!!!!!!!!!!
    11·1 answer
  • Sketch one cycle of y = 2 sin q.
    11·1 answer
  • b)En una relacion de proporcionalidad directa ¿a qué es igual la constante de proporcionalidad y como se representa algebraicame
    13·1 answer
  • I Have A 58 in Math Please Help Who Ever Can Make A Real World Scenario With The Pythagorean Theorem And The Solution Step By St
    14·1 answer
  • Solve for x in -14x⁴ - 8x³ = 32​
    6·1 answer
  • The Apple Watch was on sale for $474.60. Find the original price of the Apple Watch if it had been reduced by 30%
    12·1 answer
  • Write two different expressions that<br> represent the quantity x decreased<br> by 30%.
    11·1 answer
  • A school has a pep band, a sports band, a marching
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!