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
Alisiya [41]
3 years ago
12

What’s different about solving inequalities when you have to multiply or divide by a negative number? Can you explain why a spec

ial rule needs to be applied?
Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0
Alright, let's take an example. 1 is less than 2, so we can write it as 1<2. However, if we multiplied both sides by -1 without changing anything else, we get -1<-2, but -1 is greater than -2 because it is less negative, so the correct way of writing it would be -1>-2. Therefore, since a number that is less positive than another becomes less negative (and therefore higher) when both are multiplied by -1, we have to change the side of the inequality
You might be interested in
Solve the triangle. A = 54°, b = 11, c = 8
Delicious77 [7]
In this problem, you apply principles in trigonometry. Since it is not mentioned, you will not assume that the triangle is a special triangle such as the right triangle. Hence, you cannot use Pythagorean formulas. The only equations you can use is the Law of Sines and Law of Cosines.

For finding side a, you can answer this easily by the Law of Cosines. The equation is

a2=b2 +c2 -2bccosA
a2 = 11^2 + 8^2 -2(11)(8)(cos54)
a2 = 81.55
a = √81.55
a = 9 

Then, we use the Law of Sines to find angles B and C. The formula would be

a/sinA = b/sinB = c/sinC
9/sin54° =  11/sinB
B = 80.4°

9/sin54° = 8/sinC
C = 45.6°

The answer would be: a ≈ 9, C ≈ 45.6, B ≈ 80.4
5 0
3 years ago
The following 5 keys are for the following 5 locked padlocks. Each key opens one and only one padlock. Different keys open diffe
Scilla [17]

{5}^{5}

is the answer.

7 0
3 years ago
Find the 12th term of the geometric sequence 1, 2,4
irakobra [83]

Answer:

The 12th term in the sequence is 22

5 0
3 years ago
Read 2 more answers
Explain what each of the following sample correlation coefficients tells you about the relationship between the x and y values i
Alchen [17]

Answer: The description are as follows:

Step-by-step explanation:

Correlation coefficients is a statistical measure that measures the relationship between the two variables.

(a) r = 1, it means that there is a Perfect positive relationship between the two variables. If there is positive increase in one variable then other variable also increases with a fixed proportion.

(b) r = -1, it means that there is a perfect negative relationship between the two variables. If there is positive increase in one variable then other variable decreases with a fixed proportion.

(c) r = 0, this is a situation which shows that there is no relationship between the two variables.

(d) r = 0.86, this is a situation  which shows that there is a fairly strong positive relationship between the two variables.

(e) r = 0.06, it is nearly zero which represents that either there is a very minor positive relationship between the two variables or there is no relationship between them.

(f) r = -0.89,  this is a situation  which shows that there is a fairly strong negative relationship between the two variables.

6 0
3 years ago
Ed’s birthday is less than 16 days away.<br> (NEED HELP!!!! WILL GIVE BRAINLY)
schepotkina [342]

Answer:

it is less than and equal to

Step-by-step explanation:

its > with a line under it

3 0
3 years ago
Other questions:
  • What is the solution to the Inequality -6x&lt;-18
    5·1 answer
  • What are the leading coefficient and degree of the polynomial? 4X-2X^3+20X^4-9
    8·1 answer
  • The expression ''5 factorial" (5!) Equals
    15·1 answer
  • Identify the​ vertex, the axis of​ symmetry, the maximum or minimum​ value, and the range of the parabola.
    6·2 answers
  • For which number does the 9 have the least value 9.001, 0.9, 0.29, 7.079
    12·1 answer
  • I need help with this​
    6·1 answer
  • Need a quick answer please
    5·1 answer
  • 2x^3=128<br> work out the value of x
    13·1 answer
  • 3x^2+4x-5 find the coefficient
    6·2 answers
  • Which algebraic expressions are polynomials? Check all that apply.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!