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
Ivenika [448]
3 years ago
13

="absmiddle" class="latex-formula">
Mathematics
1 answer:
Natalija [7]3 years ago
5 0

Answer:

Step-by-step explanation:

n² + 3n - 18 = 0

n = [-3 ±√(3²-4(1)(-18)]/[2(1)] = [-3 ±√81]/2 = 3, -6

You might be interested in
24/20 as a percentage
N76 [4]

Answer:120%

Step-by-step explanation:

5 0
3 years ago
Find intergral (e^xcos(3x)dx
ArbitrLikvidat [17]

Answer:

Hello,

Step-by-step explanation:

Here is an other method than classical:

I=\int {e^x*cos(3x)} \, dx =e^x*(k_1/cos(3x)+k_2*sin(3x) )\\\\Let's\ derivate:\\\\e^xcos(3x)=e^x(k1*cos(3x)+k_2*sin(3x))+e^x*(k_1*(-sin(3x))*3+k_2*cos(3x)*3)\\\\By\ identification:\\\\\left\{\begin{array}{ccc}k_1+3k_2&=&1\\-3k_1+k2&=&0\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}k_1&=&\dfrac{1}{10}\\k2&=&\dfrac{3}{10}\\\end{array}\right.\\\\\\\boxed{I=e^x(\dfrac{1}{10}*cos(3x)+\dfrac{3}{10}*sin(3x))}\\

8 0
1 year ago
HELP PLS ITS DUE TODAY :((
Andreas93 [3]

Answer:

C would be one space to the right of D

B would be two spaces below D

A would be three spaces to the left from the new location B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The area of a square is 72. what is the longest straight line that can be drawn between any two points of the square
goblinko [34]
The longest straight line that can be drawn between any two points of a square is the one that includes the points on the opposite corners of the squares. To determine the length of this straight line, we must first determine the length of the square's side. Since the area of the square can be calculated by taking the square of the side, then

s^2 = 72
s = 6 sqrt(2)

Then, using the Pythagorean theorem, we will find c (the longest side of straight line of the square) 

c^2 = a^2 + b^2

Upon substitution of the length of the square's side, we have
c^2 = (6 sqrt(2))^2 + (6 sqrt(2))^2
c^2 = 72+72
c = 72

The length of the longest line is 72.
 
6 0
3 years ago
Grace’s catering company receives an order for 118 Apple pies. Grace used 8 Apples to make one apple pie. How many apples does s
luda_lava [24]
Tha answer is 15 apple pies. Divide 118 pies by 8 apples. You will get 14 and a remainder. Add one more to the quotient.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Translate this sentence into an equation.
    14·2 answers
  • Find the area of the trapezoid by composing into rectangles or decomposing into triangles or other shapes as needed. Show your w
    9·1 answer
  • 7-3x2+4+3 rewrite the expression so that is has a value of 27 by using one or more sets of parentheses
    5·1 answer
  • Solve the system of linear equations by adding or subtracting. Show all work!
    14·1 answer
  • A 41-foot ladder is placed against a vertical wall of an apartment building. The base of the ladder is 9 feet from the base of t
    11·1 answer
  • F(2)=<br> Please please help me
    11·2 answers
  • There are 4 consecutive odd integers that have a sum of 248. What is the greatest of these integers?
    12·1 answer
  • Find the value of x for this shape
    8·1 answer
  • The store plans to purchase the uniforms and hand out 5 uniforms to every employee, one for each day of the week uniforms come i
    11·1 answer
  • If vector p = [5, –3] and vector q = [1,4], find<br> |p⃗−5q⃗|
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!