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
almond37 [142]
3 years ago
10

Which of the followingis multiplicative of -a? (-1/a a 1 1/a)​

Mathematics
1 answer:
Elodia [21]3 years ago
4 0

Given:

The given value is -a.

To find:

The multiplicative inverse of -a.

Solution:

We know that y is the multiplicative interval of x if xy=1.

Let x be the multiplicative inverse of the given value -a. Then,

(-a)\times x=1

Divide both sides by -a.

x=\dfrac{1}{-a}

x=-\dfrac{1}{a}

Therefore, the multiplicative inverse of -a is -\dfrac{1}{a}. Hence the correct option is A.

You might be interested in
Clear x in the next ecuation 6x+2y=528
wel
The correct answer should be x=43
8 0
3 years ago
Can someone please help me with these problems. Thank you
grin007 [14]
P(3) = 1/6
P(odd) = 3/6 = 1/2 ........(odd = 1,3,5)
P(less than 5) = 4/6 = 2/3.....(less than 5: 1,2,3,4)
P(prime) = 3/6 = 1/2 ..........(prime: 2,3,5)
P(4 or 6) = 2/6 = 1/3
P(not 1) = 5/6 .....................(not 1: 2,3,4,5,6)

hope it helps
6 0
3 years ago
Read 2 more answers
Log(2)-log(8) check all that apply
Serggg [28]
Answer: -2log(2) or -0.60206

Explanation:

log(1/4)
= log(2^2)
= - 2log(2)

3 0
2 years ago
On Monday, Harold picked up three donuts and two large coffees for the office staff. He paid $3.94. On Tuesday, Melinda picked u
Pachacha [2.7K]
First things first, write the equations!
- Word problems can be intimidating because of all information given, so all you need to focus on, is the information about the variables you are solving, everything else, like the story line is irrelevant!
- Writing Equations from Word Problems:
pull the good stuff (information about the variables) so you can see the information needed, without having to mess your brain up with a bunch of irrelivance!

Equation 1:
3 donuts and 2 coffees is $3.94
Equation 2:
2 donuts and 6 coffees is $7.20

Now it is simply reading the equation...
Knowing these "terms" when writing Equations from a word problem is VERY IMPORTANT;
IS: =
and, more than, etc: +
less than, etc: -

Knowing the terms makes Writing the Equations THE EASIEST PART! Most of the time students get these problems wrong because of wrong equations!
So Equation 1 IS ( = ) ;)
3 Donut + 2 Coffee = 3.94
Equation 2:
2 donut + 6 coffee = 7.20

Now, to make things simple I personally find it easier to "let Donuts = d" and "let Coffee = c"

so...
3d + 2c = 3.94
2d + 6c = 7.20

in order to solve, we have to ELIMINATE one of the variables by making one of them equal 0.
I chose to eliminate c by multiplying the first equation by 3.
3 (3d + 2c = 3.94)
--> 9d + 6c = 3.94
and then the 2nd equation by -1
-1 (2d + 6c = 7.20)
---> -2d + -6c = -7.20
9d + 6c = 11.82
-2d + -6c = -7.20
--- Now we can add the 2 equations, doing so will cancel out c!
9d + 6c = 11.82
+
-2d + -6c = -7.20
= 7d + 0c = 4.62
= 7d = 4.62
now it is simple algebra to figure out d!
- you want to get d by itself so we need to get rid of the 7 and take it to the other side by division!
so-- 7d/7 = 4.62/7
= d = .66
Now that we know d, we just plug it into the original equations to find c!
- you can choose either one to plug it intl , but I chose equation 2:
2(.66) + 6c = 7.20
* MUST DO ORDER OF OPERATIONS- PEMDAS (parentheses, exponemts, multiplication, division, addition and then lastly subtraction)
so first we multiply 2 and .66
1.32 + 6c = 7.20
Now we want to get c by itself, so we subtract 1.32 by both sides-
6c = 5.88
now divide to get c
c = .98
ALWAYS CHECK
BOTH
EQUATIONS AFTER FINDING THE VARIABLES TO ENSURE YOU HAVE THE CORRECT ANSWER (:

I hope that helped (:
7 0
3 years ago
Math math help very urgent please Q5 and Q6
Maksim231197 [3]

Answer: 10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help ! thank you !
    11·1 answer
  • -1^{2008} + (-1)^{2007} = ?<br><br> (1 - (-1)^[11])^[2] = ?<br><br> Questions for fun~
    14·1 answer
  • On a map the Browns are using 2
    15·1 answer
  • Can someone make me a word problem for 9 x (13 + 6 - 7)? I'm bad at making word problems.
    11·2 answers
  • What is the interest you will pay if you borrowed $550 at 8% interest for 3 years?
    9·2 answers
  • Which of the following one is true
    11·1 answer
  • Graph the description of each line A line has a slope of -3 and a y-intercept of 3.
    7·2 answers
  • Kyle has saved $500 of the money he earned working
    15·1 answer
  • 1. What is the slope of a line that is parallel to the line represented by the equation 3x + 4y = 12?
    11·1 answer
  • Helppp, determine the indicated lengths
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!