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
mixas84 [53]
3 years ago
13

What product is positive ?​

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
5 0
<h3>Answer: Choice D</h3>

=======================================================

Explanation:

The long way to do this is to multiply all the fractions out by hand, or use a calculator to make shorter work of this.

The shortest way is to simply count how many negative signs each expression has.

The rule is: if there are an even number of negative signs, then the product will be positive. Otherwise, the product is negative.

For choice A, we have 3 negative signs. The result (whatever number it is) is negative. Choice B is a similar story. Choice C is also negative because we have 1 negative sign. Choices A through C have an odd number of negative signs.

Only choice D has an even number of negative signs. The two negatives multiply to cancel to a positive. The negative is like undoing the positive. So two negatives just undo each other. This is why the multiplied version of choice D will be some positive number.

Or you can think of it as opposites. If you are looking up (positive direction) and say "do the opposite" then you must look down (negative direction). Then if you say "do the opposite", then you must look back up in the positive direction.

You might be interested in
How would I find all real solutions in x^4/3 -10^2/3 +21= 0
Oxana [17]

Answer:

Step-by-step explanation:

This equation looks complicated.We have to make it easier

let's say x^2/3 = t  and  x^4/3 = t^2

     

      t^2-10t+21=0   [ we can factorize this equation as a (t-3)(t-7) ]

     

      (t-3)(t-7)=0  [ that means , t can be 3 or 7 ]

But don't forget we have to find x not t so,

   t=x^2/3=3     ∛ x^2 = 3       x^2 = 9    x=3 or x= -3

  t=x^2/3=7      ∛x^2 = 7        x^2 = 343    x ~18.5  or x ~ -18.5

7 0
2 years ago
What is the value of y?<br> 12<br> 13<br> х
krek1111 [17]

Answer:

y is 6.5 because it's kind of a ratio, you just need to find out what number to divide them by or multiply them by in this case, it was 13÷2 =6.5

3 0
3 years ago
Given: Lines, and I are parallel, with transversal line t.
VladimirAG [237]

Answer:

5 = e=h

3 = a=e

6 = b=d

4 = d=f

2 = a=h

1 = c=f

Step-by-step explanation:

8 0
3 years ago
It costs $3.75 for 5lbs of food for your puppy. How much is it for 1lb
alex41 [277]
75 cents is for 1lb


I got that answer because I divided 3.75 and 5 and the I got 75 cents
3 0
3 years ago
What is the result of converting 0.5 cups to fled ounces&gt; ( remember that 1 cup = 8 fluid ounces)
frez [133]
.5 cups is equal to 1/2 cup.
Half of 1 cup equals 4 fluid ounces.
8 0
3 years ago
Other questions:
  • Use the substitution method to solve the system of equations.
    9·1 answer
  • Find the volume of a right prism with height h=10 cm, if: a The base is equilateral triangle with side 4 cm, base altitude of ≈
    9·2 answers
  • Please help!!!!!! please please please!!!
    7·1 answer
  • 1- Tickets cost £18.50 to a music gig. The band sells 189 tickets and the
    8·1 answer
  • 100 points and brainliest if yall can get this<br><br>I don’t understand
    8·2 answers
  • Ooooooooooooooooooooooooooo
    10·2 answers
  • What is the pair of vertical angles.
    13·2 answers
  • The circle below is<br> centered at (2, 3) and has a radius of 4. What is its equation?
    13·1 answer
  • Help with this problem pls
    14·1 answer
  • The executive summary component of a business plan is to describe
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!